dml-802b digital moment limitter - minebea-mcd.com · ii marks and arrangement used in this manual...

DIGITALMOMENT LIMITTER DML-802B

Instruction Manual

EN294-1379-D

Ⅰ

FORWARD Thank you very much for your purchasing our Moment Limitter DML−802B. This manual explains installation procedures and connecting method and also operating method for Moment Limitter DML−802B. Make use of it properly after reading through the manual carefully. Be sure to deliver the manual to the end user. Moreover, the end user should keep the manual at hand after reading it over.

II

Marks and arrangement used in this manual

The following marks are attached to the explanation on the matters that indicate

“Don’t do this.”, “Take care.” and “For reference”.

Be sure to read these items where these marks are attached.

Warning ● Warning may cause injury or accident that may harm to the operator.

Don’t do these things described here.

● Caution during operation and working.

Be sure to read the item to prevent malfunction.

Mark during operation

● Press the switch.

III

For safe operation

Be sure to read this manual before use.

1. Installation place

● Use the instrument where the temperature/humidity specifies within

the range as follows:

Environmental temperature : －10℃ to 50℃

Environmental humidity : Less than 85 %R.H.(Non condensing.)

(1) Location where installation is not allowed.

Warning ● Don’t locate the instrument on the places such as follows:

It may cause an unexpected faulty in the instrument.

D Don’t locate the instrument in direct and/or high temperature area.

D Don’t use the instrument in a high humid area.

D Don’t install the instrument where there is high mechanical vibration.

D Don’t use the instrument where there is excess of dust and fine particles.

D Don’t install the instrument near the devices that become magnetized or

generate an electromagnetic field.

D Don’t install the instrument where there is rapid change of temperature

and humidity.

D Don’t install the instrument near the devices that are magnetized or

generate an electromagnetic field.

D Avoid the location where chemical reaction may take place such as in a

laboratory.

IV

1−1. Installation

● When installing the instrument, install as referring to the following

figures and secure the space around the instrument.

Each dimension of the instrument and required dimensions for the environmental spaces are as follows:

※Analog output (current) is not supported because it is discontinued production.

< Dimensions for installation >

100

50 160.62.3

200

210

4−φ4.5

91

186

187+0.3

0

200

4−M4

92+0.10

50

panel cut

front side

rear

Unit :mm

t

V

2. Power supply

● Before supplying the power, check that the indication of power

supply/specification for the instrument and the power going to supply

should be the same. If they are not equal, contact us.

If you use the instrument without checking them, it may cause a

damage in the instrument or electric shock to the operator.

Warning ● In order to prevent from a damage to the instrument and electric

shock to the operator, be sure to check that power supply is off when

installing each cable.

● Earth wire should be grounded securely. When earth wire is not

connected, it may cause a malfunction of the instrument or electric

shock to the operator.

3. Application Notes

Warning ● Before using a new instrument or exchanging the strain gage applied

transducer for a new one, be sure to make calibration.

If calibration shall not be made, correct measured results may not be

obtained nor which may cause malfunction in the instrument and

there may exist damage in peripheral equipments.

Besides, even though calibration has been made, there may occur the

similar case when the result is not correct, so make calibration again.

Warning ● In case of using the instrument, check that the connections are

executed properly. If not connected properly, correct measured result

will not be obtained, nor it may cause malfunctions of the instrument,

damage to the peripheral equipments or even more serious accident.

Warning ● When change of setting is made carelessly on the instrument during

measurement, it may cause malfunction in the instrument and also

possibilities of damage in peripheral instruments.

VI

Warning ● Do not shock the instrument such as throwing something on it.

It may cause the damage to the case and even have the possibility of

damage to the instrument in resisting to environment.

Warning ● Do not push the panel sheet on the instrument with unnecessary

strong force nor push it with sharp edge object such as driver

It may cause a damage to the case or panel sheet and even have the

possibility of damage to the instrument in resisting to environment or

operational performance.

Warning ● Do not remove the cover of the case and panel sheet, nor destroy the

instrument. They may cause possibilities of damage to the instrument

in resisting to environment or operational performance.

Ⅶ

History of revision

Date Instruction manual No Details of revised point

May, 2009 DRW. NO. EN294−1379 First version

Aug.2012 DRW. NO. EN294−1379A Due to FN10−02140D

MInebea logo is changed.

Jun. 2015 DRW. NO. EN294−1379B

Due to FN13−02110A

− Change −

・Change DML−802 to DML−802B

・P20 Caution message changed to “The function will not

be used for the Jib Luffing wire tension detective type.It’ll

give you an error display of [E04].”

・P60 F41 Start control on ZERO adjustment

Changed intial value default 2 to 0.

・P63 F77 Limit of teaching start

Changed initial value default 1 to 0.

Due to FN15−02082

− Change −

・P52 7−8−2. Specifications for interface

Baud rate value changed 9 600 bps to 38 400 bps.

Jan. 2018 DRW. NO. EN294−1379C

Due to FN18-02008

− Add −

・※Analog output (current) is not supported

Feb. 2018 DRW. NO. EN294−1379D Due to ECN FN17-02017 ・Delete the company name in the contents.

Contents

FORWARD I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Marks and arrangement used in this manual II. . . . . . . .For safe operation III. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 General 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1−1 Features 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Each name and its function 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .2−1 Front panel 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2−2 Rear panel 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Installation method 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3−1 As for the installation place 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3−2 Location where installation is not allowed. 6. . . . . . . . . . . . . . . . .3−3 Location 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3−4 Installation method of the angle detector 8. . . . . . . . . . . . . . . . . .

4 Connecting method 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−1 Layout of connector 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−1−1 L/C1～3 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−1−2 RADIUS 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−1−3 POWER 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−1−4 INPUT 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−1−5 OUTPUT 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−1−6 RS-232C 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−2 Warning related to connection 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .4−3 Connection 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4−3−1 LC 1 to 3 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−3−2 RADIUS 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−3−3 POWER 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−3−4 INPUT 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−3−5 OUTPUT 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4−3−6 RS-232C 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Calibration method 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5−1 Preparation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5−2 ZERO adjustment on Working radius 18. . . . . . . . . . . . . . . . . . . . . .5−3 ZERO adjustment on the lifting load 20. . . . . . . . . . . . . . . . . . . . . .5−4 ZERO adjustment on the lifting load 22. . . . . . . . . . . . . . . . . . . . . .5−5 Weight mass setting for SPAN teaching 24. . . . . . . . . . . . . . . . . . . .5−6 Teaching 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 Operation method 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6−1 key 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6−1−1 Operation in Measurement mode 37. . . . . . . . . . . . . . . . . . .6−1−2 Operation in Function mode 37. . . . . . . . . . . . . . . . . . . . . . .

6−2 key 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6−2−1 Operation in Measurement mode 38. . . . . . . . . . . . . . . . .6−2−2 Operation in Function mode 38. . . . . . . . . . . . . . . . . . . . . . .

6−3 key 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6−3−1 Operation in Measurement mode 38. . . . . . . . . . . . . . . . . . .6−3−2 Operation in Function mode 38. . . . . . . . . . . . . . . . . . . . . . .



7 Function and its operation 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−1 External control Input/Output signal 40. . . . . . . . . . . . . . . . . . . . . .

7−1−1 INPUT 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−1−2 OUTPUT 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−1−3 Equivqlent circuit 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7−2 Comparator 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−2−1 Change of operational particulars of 90% of Moment,

100 % of output 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−2−2 Setting of comparative target of control output 1 to 6

and operational particulars 44. . . . . . . . . . . . . . . . . . . . . . . . . .7−2−3 Change of set value of control output 1 to 6 45. . . . . . . . . . .7−2−4 Change of Hysteresis values for control output 1 to 6 47.

7−3 Automatic Zero 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−4 Digital filter 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−5 Change of display times 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−6 Process of minus (−) area of Lifting load 51. . . . . . . . . . . . . . . . . . .7−7 Check mode 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7−8 Setting particulars through the RS−232C communication 51. . .

7−8−1 Connector connections with the RS−232C 52. . . . . . . . . . .7−8−2 Specifications for interface 52. . . . . . . . . . . . . . . . . . . . . . . . .7−8−3 Examples of connections 53. . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Function mode 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8−1 Setting method of Function mode 54. . . . . . . . . . . . . . . . . . . . . . . . .8−2 Function of Function data 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8−3 Correction of Teaching data(F73, F74, F75, F76) 65. . . . . . . . . . .8−4 Memory clear(F−99) 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

709 Sold seperately (current output) . . . . . . . . . . . . . . . . . . . . . . .※Analog output (current) is not supportedbecause it is discontinued production.

9−1 Related Function 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9−2 Specifications 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9−3 Connecting method 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9−3−1 Note related to connection 70. . . . . . . . . . . . . . . . . . . . . . . . .9−3−2 Connection 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9−4 Setting of particulars for current output 71. . . . . . . . . . . . . . . . . . .9−4−1 Selection of taarget of output 71. . . . . . . . . . . . . . . . . . . . . .9−4−2 Range setting for current output 71. . . . . . . . . . . . . . . . . . .

9−5 Fine adjustment on current output 72. . . . . . . . . . . . . . . . . . . . . . . .

10 Troubleshooting 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10−1 Troubleshooting 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10−2 ERROR display 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10−3 Simple check method for a transducer (Load cell) 82. . . . . . . . .

1

1 General

･The instrument is a digital moment limitter for a Movable type of crane and a crane.

･Suspending load can be detected with the load cell and also jib angle (Working radius) can

be detected with the Angle detector attached, then these signals can be computed through

the micro computer.

･The processed data shall be output as alarm signals.

1−1 Features

Main features of the instrument are as follows:

(1) The following changes can be made for crane particulars.

・Load cell: 1～3

・Moment: 1～30

・Jib: 1～30

・Range : 1～30 (Jib Luffing method: Change of compensation data will be 1～12.)

(2) Themoment curve can be registeredwith 15 points of optional plots (Working radius/Load value)

other than with the COS curve. However, they are the following changes.

・Moment: 1～6

・Jib: 1～5

(3) The load calibration can be compensated with the non−linearity of tension of Jib Luffing by exe-

cuting teaching with the actual instrument.

(4) By changing the display times and digital filter, you can hold the ratio of load variation due to

vibration and so on.

Warning ● The sensor that can be connected with the instrument is limited

to the strain gage applied load cell and the angle detector attached

with the instrument.

Warning ●Depending on the final No. of P/N of instrument, the movable type

crane, or the crane which is applied shall have some limitation.

Make use of it after checking its specification or like that fully.

P/N: DML−802B−***

Final№

2

2 Each name and its function

2−1 Front panel

● As for the operation of the instrument, refer to the Chapter 5, 6 and 7.

①②

③

④

⑤

⑥

⑦

⑧

⑨

⑩ ⑫

⑪

⑬

t

1 Monitor for load cell

Clarifies the No. of load cells applied.

2 Display section of moment ratio

Displays the moment ratio with the bar graph LED.

Display range： More than 60 % and less than 125 %

Resolution ： 2.5%

Display color：Less than 90 % green

More than 90 % and less than 100 % yellow

More than 100 % red

3 Display section of Lifting load

Measurement mode : Displays the present lifting load.

Function mode: Displays the function No.

3

4 Working radius display section

Measurement mode: Display the present working radius.

Function mode: Displays the function data.

5 Monitor display section

Measurement mode: Displays selected datawhichever among “Limit load, Limit radius, Jib

angle, Moment No., Jib No., and Range No.”.

Function mode: Displays function data.

6 Monitor display for control output

Displays the condition of control output. When the relay contact of LIMIT1～6 becomes ON, the

corresponding LED will light on and off.

7 Moment output monitor

Displays the condition of 90% of moment and 100 % of output. It lights on and off when the relay

contact of 90 % or 100 % is ON.

8 Up/Down display

Lights on and off during the external “Up” or “Down” signal is inputting.

9 key

Measurement mode : Ineffective

Function mode : Uses when carrying the set value.

10 key

Measurement mode : With the combinationuse ofkey, executes automatic zero for the lift-

ing load value.

(It is ineffective in the case of single operation and Jib luffing tension de-

tecting type.)

Function mode : Applied for the registration of set value.

11 key

Measurement mode: Display of load cell shown at① and change of input can be made.

Function mode: Uses for the increment of set value.

12 key

Measurement mode: Uses when shifting to the function mode.

Function mode : Uses when shifting to the measurement mode.

13 key

Measurement mode: Changes the target of display shown on the⑤.

Function mode : Uses for the decrement of set value.

4

2−2 Rare panel

① ② ③ ④ ⑤ ⑥

⑦ ⑧ ⑩ ⑨ ⑪

⑫

●Refer to chapter 4 for the connection with the instrument.

1 L/C1

Connects with a load cell (Load cell 1).

2 L/C2


3 L/C3


4 RADIUS

Connects with an angle detector.

5 POWER

Connects with DC power supply (24 V).

6 FUSE

This is a fuse hold (midget 3 A).

7 OUTPUT

A connector for output signal.

5

8 INPUT

A connector for input signal.

9 RS−232C

A connector for the RS−232C communication.

10A−OUT(Sold separately.) ※Analog output (current) is not supported because it is discontinued production.The terminal board for analog output (4 mA to 20 mA). There is no indication on the option,

a dummy panel shall be installed.

11A−OUT adjustment trimmer (Sold separately.) ※Analog output (current) is not supported because it is discontinued production.The trimmer for adjustment on analog output (4 mA to 20 mA).

Z：For zero adjustment S：For span adjustment

There is no indication on the option, a dummy panel shall be installed.

12Name plate for serial No.

6

3 Installation method

3−1 As for the installation place

● Use the instrument when temperature/humidity specifies within

the range as follows:

Environmental temperature : -10℃ to 50℃

Environmental humidity : Less than 85 %R.H.(No condensing.)

3−2 Location where installation is not allowed.

Warning ●Do not locate the instrument on the places such as follows:

It causes unexpected faulty of the instrument.

D Don’t locate the instrument in direct sunshine and/or in high temperature area.

D Don’t use the instrument in a high humid area.

D Don’t install the instrument where there are vibrations and shocks.

D Don’t use the instrument where there are excessive dusts and fine particles.

D Don’t use the instrument where there are corrosive gas and salts and like that.

D Don’t install the instrument where there is rapid change of temperature and/or

humidity.

D Don’t install the instrument near the devices that are magnetized or generate an

electromagnetic field.

D Don’t install the instrument where the instrument may be affected by

radioactivity or radial rays.

D Avoid the location where chemical reaction may take place such as in a

laboratory, or like that.

7

3−3 Location

●When installing the instrument, install as referring to the following

figures and secure the space around the instrument.

Each dimensions of the instrument and required dimensions for the environmental spaces are as follows:※Analog output (current) is not supported because it is discontinued production.

100

50 160.62.3

200

210

4−φ4.5

91

186

187+0.30

200

4−M4

92+0.10

50

panel cut

Dimension of the instrument

front side

rear

Unit :mm

t

8

3−4 Installation method of the angle detector

The angle detector attached with the instrument, shall be installed as follows.

With the jig fallen down parallel to the ground(horizontal), set it so that the “UPPER” indicatethe direction of vertically upward.

・

･Set it so that the “FRONT” indicate to the

extension direction of jib.

Jig angle

Jib

Angle detector

The earth

9

4 Connecting method

4−1 Layout of connector

4−1−1 L/C1～3

Pin No. Name Application

A +Bridge power supply

B −signal of load cell

C −bridge power supplyF th ti f

D + signal of load cell For the connection ofload cell

E shieldload cell

F No connection

G No connection

Suitable plug: PRC03-12A10-7M Made by Tajimi Electronics Co., Ltd.**Required number of plugs are attached according to the

specifications.

4−1−2 Radius

Pin№ Name Application

A +excitation voltage

B +angle signal For the connection ofC COM

For the connection ofangle detection

D shield

Suitable plug: PRC03-12A10-4M Made by Tajimi Electronics Co., Ltd.

The plug is attached.

4−1−3 Power


A +DC 24 VF th ti f

B +DC 0 VFor the connection of

power supplyC Shield

power supply

Suitable plug: PRC03-12A10-3F Made by Tajimi Electronics Co., Ltd.The plug is attached.

10

4−1−4 Input


1 Moment№1×100

2 Moment№2×100

I t f t l3 Moment№4×100 Input of externalchange of moment No

4 Moment№8×100change of moment No.

(Binary code *1)5 Moment№1×101

(Binary code *1)

6 Moment№2×101

7 Jib№1×100

8 Jib№2×100

I t f t l9 Jib№4×100 Input of externalchange of jib No

10 Jib№8×100change of jib No.

(Binary code *1)11 Jib№1×101

(Binary code *1)

12 Jib№2×101

13 Range№1×100

14 Range№2×100

I t f t l15 Range№4×100 Input of externalchange of range No

16 Range№8×100change of range No.

(Binary code *1)17 Range№1×101

(Binary code *1)

18 Range№2×101

19 Load cell 1Ch f t l i20 Load cell 2 Change of external in-

put of load cell21 Load cell 3

put of load cell

22 Lifting up External compensation in-put for lifting up/lifting

23 Lifting downput for lifting up/lifting

down

24 Key−rock Input of prohibited op-eration on front panel

key

25 COM (Effective only forkey.)

Suitable plug:MR−25LF Made by Honda tsushin kogyo co., ltd.The plug is attached.

・The external connecting works are out of our charge.・In the case of no external input (code 0, No connection), variouskinds of change shall be effective when function mode and/or key

SW(s) is/are used.

11

4−1−5 OUTPUT

Pin No. Name Application

1 Load cell 1 moment 90 %Moment alarm signal


for load cell 13 COM1 *3

for load cell 1




for load cell 2




for load cell 3

10 Control output 1V i ki d f11 Control output 2 Various kinds of con-

trol signal12 Control output 3

trol signal

Control signal can be13 Control output 4

Control signal can beassigned by Suspend-

14 Control output 5g y p

ing load, Working ra-dius Jib angle Mo

15 Control output 6dius, Jib angle, Mo-

ment ratio.16 COM4 *3

ment ratio.

17 Error Error: Error signal18 Busy

Error: Error signal

Busy: Signal during

19 COM5 *3

y g gmeasurement

20 Buzzer + Output for buzzer21 Buzzer −

Output for buzzersound

22 Load cell 1 ACK

23 Load cell 2 ACK Output of load cell se-24 Load cell 3 ACK

plecting.

25 COM6 *3

Suitable plug:MR−25LF Made by Honda tsushin kogyo co., ltd.The plug is attached.

・The external connecting works are out of our charge.

*3:All of the COM1～6 are isolated electrically.

12

4−1−6 RS−232C


1 FG

2 RXD

3 TXD

4 RTS

5 CTS

6 DSR

7 SG

8 CDRS-232C

9 Not connected.RS-232C

10 Not connected.

11 Not connected.

12 (TXD)current loop

13 FG

14 (TXD)current loop

15 Not connected.

Suitable plug：DB-15PN Made by Japan Aviation

Electronics Industry, Limited.

The plug is not attached.

13

4−2 Warning related to connection

Warning ●Be sure to connect with the instrument and the specified load

cell(s) and the angle detector.

Warning ● In the case of connecting with the instrument, strictly follow the fol-

lowing items. If neglected, they may cause unexpected faulty and damage

of the instrument.

･When connecting, be sure to make the power supply OFF.

･The connector plug should be fixed securely until it rocked, so that not to loosendue to vibra-

tion and so on.

･For the connection of power supply, take care not to mistake its polarity.

14

4−3 Connection

4−3−1 LC 1 to 3

Warning ●The load cell and the angle detector that can be connected with the in-

strument should be the one set with the instrument and also should be the

one certified by Japan Crane Association (JCA)

ABCDEFG

L/C1～3redbluwhtgrn

yel(shield)

Loadcell

4−3−2 RADIUS

ABCD

RADIUSredwhtblk

yel(shield)A n g l edetector

4−3−3 POWER

ABC

POWER

(18 V to 36 V)DC 24 V 3 A

D class grounding

+

Warning ●Connection with the power supply and the earth should be made se-

curely according to the figure s and also within the specified power supply

condition. If neglected, it may cause an unexpected cause of failure.

●Nevermake connectionwith the supply sourcewith the+and− ad-

versely. If you connect it adversely, the internal fuse will blow off.

●The instrument should be grounded with D class gounding.

If neglected, it may cause an unexpected malfunction due to the ef-

fects of noise from other equipment.

15

4−3−4 INPUT

1234567

INPUT

Change of momenent(Binary 1～30)

№1×100

8910111213141516171819202122232425

Change of jib(Binary 1～30)

Change of range(Binary 1～30)

Change of LC

Lifting up/Lifting downcompensation

Key rock

LiftingLowering

Connection with the frameof the instrument

shield

№1

№2×100

№4×100

№8×100

№1×101

№2×101

№1×100

№2×100

№4×100

№8×100

№1×101

№2×101

№1×100

№2×100

№4×100

№8×100

№1×101

№2×101

№2№3

●For the connections with external control inputs, be sure to apply

shielded cable, and the shielded cable should be connected with the

frame of the instrument. If neglected, it may cause malfunction due

to the effects from external noises and so on.

Warning ●Connections with external control input should be made securely

according to the above figures. If neglected, it may cause an unex-

pected malfunction to the instrument.

16

4−3−5 OUTPUT

1234567

OUTPUT

Moment ofLC 1

8910111213141516171819202122232425

LoadLoad

LoadLoad

Load

Load

LoadLoadLoadLoadLoadLoad

LoadLoad

LoadLoad

Load

or or

or or

or or

or or

or or

or or

90 %100 %COM1

Moment ofLC 2

90 %100 %COM2

Moment ofLC 3

90 %100 %COM3

LIMIT1LIMIT2LIMIT3

LIMIT4LIMIT5LIMIT6COM4

C o n t r o loutput

Error, bussyoutput

ERRORBUSYCOM5

Buzzer+−

+

−Buzzer EB2112

ACK of LC

LC 1

LC 2LC 3COM6

Rated load of contact point AC125 V 1 ADC30 V 2 A

shield

Connect with the frame of the instrument.

LC=Load cell

(Matsushita Electric Works)

●For the connections with external control inputs, be sure to apply

shielded cable, and the shielded cable should be connected with the

frame of the instrument. If neglected, it may cause malfunction due

to the effects from external noises and so on.

Warning ●Connectionswith external control input shouldbemade securely ac-

cording to the above figures and also within the rated of contact

point. If neglected, it may cause an unexpected malfunction to the

instrument.

4−3−6 RS−232C

The explanation shall be made in the chapter 7ｰ7.

17

5 Calibration method

Warning ●When the instrument is under the following conditions, be sure to make

calibration.

･When newly purchased.

･Exchanging load cell(s) or angle detector(s)

･Periodical inspection

･When repair and exchange is required.

･After clearing the memory

If calibration is not made, correct measured results may not be ob-

tained, or it may cause malfunction to the instrument and it may

damage to the peripheral equipment.

●Be sure to check the wirings before making calibration.

●The calibration should be made according to the instruction of this

manual.

●The calibration should bemadewhen there is no load applied on the

load cell(s).

●Prepare theStandardweight for calibration that canvalidate the ev-

idence of its accuracy fully.

Execute the calibration on the instrument according to the procedures shown below:

Lifting up wire tension detectivetype(General type)

Jib Luffing wire tension detective type

Preparation↓

ZERO adjustment Working radius(Chapter 5−2)

↓ZERO adjustment of Lifting load

(Chapter 5−3)↓

ZERO adjustment of Lifting load(Chapter 5−4)

Preparation↓

ZERO adjustment of Working ra-dius(Refer to Chapter 5−2.)

↓Setting weight (bucket) of mass forteaching(Refer to Chapter 5-5.)

↓Teaching(Refer to Chapter 5-6.)

●Take care fully when you handle the standard weights for calibra-tion purpose. Beside we shall not take any responsibility ex-cept for the accident due to the direct operation of the instrument.

18

5−1 Preparation

According to the Chapter 4 “Connecting method”, connect the instrument, a load cell and an

angle detector properly and supply power.

5−2 ZERO adjustment on Working radius

Procedure

1

Operate the jib so that the working radius willstop the position where you can measure easilyand then fix it.Measure the distance from the slewing center tojust below the hook, then compare with the dis-play of working radius of the instrument.*When the comparative result is good, proceed

to the step 7.*When the comparative result is different,

proceed to the step 2.

Slewingcenter

Working radius

2

In the Function mode, execute the ZERO adjust-ment on the working radius.

Press on the key for 3 seconds or more.Lifting load display section will become “F**”(Function No.), and the 100 digit will flash on andoff.

(With re−operation of the key, the Measure-ment mode shall be returned.)

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3

Set the function No. to “F−08”.

(With re−operation of the key, the Measure-ment mode shall be returned.)

: Decrement key for flashing display: Increment key for flashing display

: Shift(carry) key for flashing section

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19

Procedures

4

Press the key.The flashing of Function No. will stop and “RZ”display will be shown on the Working radius sec-tion. Moreover, the working radius shall be dis-played on the Monitor section and all the digitswill flash on and off.With the keys in the right figure, make adjust-ment so that the the working radius display willbecome the same value as the measured value ac-tually.

By pressing the keys in the right figure, the dis-play will vary continuously.

(With re−operation of the key, returns tothe step 3.)

: Increment key for values

: Decrement key for values

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Error display“E15” In the Measurement mode, you are

going to execute the operation whenthe working radius is over condition.

By pressing the key, the Mea-surement mode shall be returned, soexecute the operation after cancel-ling the over condition.

5

Press on the key.The function No. on the Lifting load section willproceed to flashing display of “F09”, and ZEROadjustment on the working radius shall be com-pleted. t

6Press on the key.The working radius shall be displayed in the Mea-surement mode, so compare with the measuredvalue actually.

7

Operate the jib and check that the display ofworking radius and the measured value actuallyshall be the same by changing the radius for a fewcases.

20

5−3 ZERO adjustment on the lifting load

●The function will not be used for the Jib Luffing wire tension detective type.

It’ll give you an error display of [E04].

Procedures

1

In the Function mode, execute the ZERO adjust-ment of the Lifting load.Remove the initial load of hook, bucket and so on,and then tighten the jib with the angle that canlift the rated load.

Press the key for more than 3 seconds.The Lifting load display section will become “F**”(Function No.) and the digit of 100 will flash onand off.

(With re−operation of the key, the Measure-ment mode can be returned.)

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2

Set the Function No. to “F05” with the keys inright figure.



: Shift(Carry) key for flashing displaysection

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21

Procedures

3

Press on the key.The flashing display of Function№ will stop and“ZRO” shall be displayed on the working radiussection. Moreover, the lifting load shall be shownon the Monitor section and all the digits will flashon and off.Make ZERO adjustment on the lifting load by refer-ring to the keys in the right.When the right keys are pressed on continuously,the display will also change continuously.

(Returns to the step 2 by re−operation of the

key.)

When the load value varies by lifting up and lift-ing down, input the Lift up Signal and makeZERO adjustment, and afterwards make ZEROadjustment by inputting the Lift down Signal.



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Error display[E12]: You are going to execute the operation

when the lifting load is over condi-tion in the Measurement mode.

By pressing on the key, theMeasurement mode can be returnedso make the operation after cancel-ling the over condition.

4

Press on the key.The Function No. on the lifting load section willbecome the flashing display of “F06”, and theZERO adjustment of lifting load shall be com-pleted. t

5 Press on the key.Returns to the Measurement mode.

22

5−4 SPAN adjustment on lifting load

●The function will not be used for the Jib Luffing wire tension detective type.


Procedures

1

In the Function mode, execute the SPAN adjust-ment of lifting load .

Lift the rated load or the weight of vicinity ofmass of rated load (equivalent good) at the jib an-gel that can lift up, and then sustain it.

Press on the key for more than 3 secondscontinually.The Lifting load display section will become “F**”(Function No.) and the digit of 100 will flash onand off.

(By re−operation of the key, the Measure-ment mode shall be returned.)

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2

Set the Function No. to “F06” with the keys in theright figure.

(By re−operation of the key, the Measure-ment mode can be returned.)

: Increment key for flashing display: Decrement key for flashing display


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23

Procedures

3

Press the key.The flashing display of Function№ will stop and“SPN” shall be displayed on the working radiussection. Moreover, the lifting load shall be shownon the Monitor section and all the digits will flashon and off.Make ZERO adjustment on the lifting load by refer-ring to the keys in the right.When the right keys are pressed on continuously,the display will also change continuously.

(By re−operation of the key, return to thestep 2.)

When the load value varies by lifting up and lift-ing down, input the Lift up Signal and makeSPAN adjustment, and afterwards make SPANadjustment by inputting the Lift down Signal.



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Error display[E13]: When the lifting load is in the over con-

dition in Measurement mode, you’regoing to execute the operation.

When the key is pressed, theMeasurement mode shall be re-turned, so make the operation after

lli h di i, p

cancelling the over condition.

[E14]: You’re going to execute the operationwith no lifting load to be measured.

By pressing on the key, theMeasurement mode can be returned,so make the operation after liftingrequired weights or the like.

4

Press on the key.The Function No. on the Lifting load section willproceed to the flashing display of “F07”, and theSPAN adjustment on the Lifting load can be com-pleted. t

5 Press on the key.Returns to the Measurement mode.

24

5−5 Weight mass setting for SPAN Teaching

●The function shall not be used for the Lifting wire tension detective type.


●For setting of mass, you have to register for all the combinations (12 kinds

at Max.)within the range of Load cell(1 to 3) and ranges (1 to 4) that can be

applicable.

Procedures

1

In the Function mode, make registration for themass of weight (Equivalent good) used at the timeof teaching SPAN.

Keep on pressing the key for 3 seconds ormore.The Lifting load display section becomes”F**“

(Function№), and the digit of 100 will flashing onand off.(Returns to the Measurement mode with re−op-

eration of the key.)

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2

Set the Function No. to “F70” with the keys in theright.(Returns to the Measurement mode with re−op-


: Decrement key for flahsing display: Increment key for flashing display


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25

Procedures

3

Press on the key.The flashing of Function№ stops, and the data isseen on the Monitor section, and the digit of 100

flashes on and off.With the right keys, set the mass of weight (equiv-alent good) (＊＊＊.＊ t)When the right keys is pressed for more than 2seconds, the display will change continuously.(Returns to the Measurement mode with re−op-



: Shift(carry) key for flashing display

t

4Press on the key.The Function No. of Lifting load section proceedsto flashing display of “F71”, and registration forthe data can be completed.

5 Press on the key.Returns in the Measurement mode.

26

5−6 Teaching

●The function shall not be used for the Lifting wire tension detective

type. It’ll give you an error display of [E04].

●For setting of mass, you have to register for all the combinations

(12 kinds at Max.)within the range of Load cell(1 to 3) and ranges (1 to 4)

that can be applicable.

●The points of jib angles that acquire data in the Teaching shall be as

follows: 20°,25°,30°,35°,40°,45°,50°,55°,60°62.5°,65°,

67.5°70°,72.5°,75°,77.5°and 80° (17 points at max.)

The data will become effective for the first time when the the jib

passed through the adjacent 2 points.

(EX.1)When the minimum angle of jib is 27°and teaching will be

started from 27°,then the passing points will become 30°and 35°

and the data above 30°will become effective. When you want the

data below 30°,you have to make teaching by lowering the jib below

25°forcedly.

(EX.2)For teaching on the special local area, if you want to acquire

the laying data of 50°to 45°, start from vicinity of 51°and finish in

the vicinity of 44°, since the jig has to pass through 50°and 45°.

●Teaching can aquire the data of “Raising Jib (Lifting up)” and “Lay-

ing down (Lifting down)”. The data available during driving are 3

kinds, that are “Average”, “Raising Jib (Liftingup)” and “LayingJib

down “Lifting down)” depending to the input of external signals.

●When the teaching is made, the contents of ZERO adjustment on

Lifting load shall not be effective. If youwant tomake ZERO adjust-

ment on the lifting load, make it after teaching has completed.

27

Procedures

1

Execute Teaching in the Function mode.

Press on the key for more than 3 seconds.The Lifting load display section will become “F**”(Function No.), and the digit of 100 will flash onand off.(The Measurement mode shall be returned with

re−operation of the key.)

Set the Function No. to “F71” with the right keys.

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2

(The Measurement mode shall be returned with

re−operation of the key.)

: Decrement key for flashing display

: Increment key for flashing display

: Shift(carry) key for flashing display

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28

3

Press on the key.Flashing display of Function No. stops and theworking radius becomes flashing display of “ZUP”The Monitor section shows Jib angle.Prepare for “Raising Jib up ZERO teaching”.

①Remove the initial load applied on thehook, bucket and so on, to make no load applied.②Lie down the jib to the maximum limit that canbe used.(When the local data is required again, fixthe position at the lowest required limit of theangle.)When you won’t execute “Raising Jib ZERO

teaching”, press on the key twice, then pro-ceeds to the step 5.

(Return to the step 2 with the key operation of

.)

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29

Procedures

Press on the key.Stops the flashing [ZUP], the bar meter of mo-ment ratio will light up from 60 % in order, anddisplays that “Raising Jib ZERO teaching” can beavailable.Make operation of “Raising Jib ZERO teaching”.①Raise the jib up slowly. The raising speed shouldbe the degree that can be read the variety of dis-play of jib angle per 0.1°.②The jib should arise up securely within therange of requisition.③After operation is completed, proceed to step 5.

(With the operation of key, the data will re-turn to step 2 without registration.)

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4

・With the key operation, the display ofMonitor section can be changed from Jib angleand Load mV/V and vice versa.

Jib angledisplay

Lifting loadmV/V display

Jib angle LEDlights.

All the decimal pointsflash in minus polarity.

・It gives Error message when inconvenience isoccurred in the operation of Jib.

[E23] You are going to lay down the Jib.

When the key is pressed during the ER-ROR display, the step 3 can be returned, andyou can try it again.

Or when the jib is raised in some degree, theerror will be cancelled and you can make teach-ing continuously.

[E25] Some load is lifted.


Or, when the lifting load is lowered and makethe condition that no load applied, the errorwill be cancelled and you can make teachingcontinuously.

30

Procedures

5

Press on the key. The acquired datathrough“Raising the Jib ZERO teaching” can beregistered internally.

The Bar meter display will light off and the work-ing radius section becomes flashing display of“ZDN”. On the Monitor section, Jib angle will bedisplayed.Prepare for “laying Jib low ZERO teaching”.

①Remove the initial load applied on the hook,bucket, and so on to make no load applied.②Raise up the jib to the maximum limit that canbe used. (When the special local data is requiredagain, fix the position at the upper limit of theangle required.)When you won’t execute “Raising Jib up ZEROteaching”, you can proceed to the step 7 by press-

ing the key twice.

(With the key operation of, returns to thestep 2.)

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31

Procedures

Press the key.The flashing display of [ZDN] stops and the Barmeter of moment ratio will light off from 125 % inorder, and displays that “Laying Jib low ZEROteaching” can be executed.Make the operation of “Laying Jib low ZEROteaching”.

①Slowly lay the jib low.The laying speed should be the degree that can beread the variation of display of jib angle per 0.1°.②The jib should lay low securely within the rangeof requisition.③After operation is completed, proceed to step 7.

(With the key operation of, the data will notbe registered, and return to the step 2.)

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6

・You can change the display of Monitor sectionfrom Jib angle and Load in mV/V display and vice

versa with the key.

Jib angledisplay


Lifting loadmV/V display

All the decimal points flashin minus(−) polarity.

・It gives ERROR message when inconvenience isoccurred in the operation of Jib.

[E24] You are going to raise the jib up.

When the key is pressed during the ER-ROR display, the step 5 can be returned, andyou can try it again.Or when you lie low the jibin some degree, the ERROR will be cancelled

and you can make teaching continuously.

[E25] Some load is lifted.

When the key is pressed during the ER-ROR display, the step 5 can be returned, andyou can try it again. Or, when the lifting load islowered and make the condition that no load

applied, the error will be cancelled and you canmake teaching continuously.

32

Procedures

7

Press the key. The acquired data throughthe “Laying the Jib low ZERO teaching” shall beregistered internally.

The bar meter display will light off and the work-ing radius flashes as “SUP”.The jib angle shall be displayed on the Monitorsection.Prepare for the “Raising the jib up SPAN teach-ing”.

①Install the weight of mass (equivalent good) setor the bucket in the Chapter 5-5 so that all theload can be applied on the jib.②Lay the jib low as possible within the applicablerange.(When the local data is required again, fix theposition at the lowest limit of the angle required.)When you don’t make “Laying the Jib low ZERO

teaching”, proceed to step 9 by pressing on the

key twice.

(Returns to the step 2 by the key operation of

.)

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33

Procedures

Press on the key.Stops the flashing display [SUP], and the bar me-ter of moment ratio will light on from 60 % in or-der, so that it displays you to execute “Raise thejib up SPAN teaching”.Make operation of “Raise the jib up SPAN teach-ing”.

①Slowly raise the jib up.The raising speed should be the degree that can beread the variation of display of jib angle per 0.1°.②The jib should raise up securely within therange of requisition.③After operation is completed, proceed to step 9.

(With the key operation of, the data won’tbe registered and returns to the step 2.)

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8

・You can change the display of Monitor sectionwith Jib angle and Load in mV/V display and vice

versa with the key.

Jib angledisplay


Lifting load

mV/V displayAll the decimal points flashin minus(−) polarity.

It gives ERROR message when inconvenience isoccurred in the operation of Jib.

[E23] You’re going to lay down the Jib.

During the ERROR display, pressing on

the key makes it returned to the step 7,and you can try it again.。

Or During the ERROR display, raise the jib upto some extent, then the ERROR will be can-celled and you can continue to make Teaching.

[E26] No load is applied.

By pressing the key during the display ofERROR, the step 7 will be returned and youcan try it again.

Or during the ERROR display, by lifting thespecified load, the ERROR will be cancelled andyou can continue Teaching again.

34

Procedures

9

Press the key. The acquired data throughthe “Raising the Jib up SPAN teaching” shall beregistered internally. The bar meter display willlight off and the working radius flashes as “SDN”.The jib angle shall be displayed on the Monitorsection.Prepare for the “Laying the jib low SPAN teach-ing”.

①Install the weight of mass (equivalent good) setin the Chapter 5-5 or the bucket so that all theload can be applied on the jib.②Raise the jib up as possible within the applica-ble range.(When the local data is required again, fix theposition at the upper limit of the angle required.)When you don’t make “Laying the Jib low SPAN

teaching”, proceed to step 11 by pressing on the

key twice.

(Returns to the step 2 by the key operation of

.)

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35

Procedures

Press the key.The flashing display of [SDN] stops and the Barmeter of moment ratio will light off from 125 % inorder, and displays that “Laying Jib low SPANteaching” can be executed.Make the operation of “Laying Jib low SPANteaching”.

①Slowly lay the jib low.The laying speed should be the degree that can beread the variation of display of jib angle per 0.1°.②The jib should lie low securely within the rangeof requisition.③After operation is completed, proceed to step 11.

(With the key operation of, the data will notbe registered, and return to the step 2.)

(With the key operation of, the data won’tbe registered and returns to the step 2.)

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10

・You can change the display of Monitor sectionfrom Jib angle and Load in mV/V display and vice

versa with the key.

Jib angledisplay


All the decimal points flashin minus (−) display.

Lifting load

mV/V display

・It gives ERROR message when inconvenience isoccurred in the operation of Jib.

[E24] You are going to raise the jib up. When

the key is pressed during the ERROR dis-play, the step 9 can be returned, and you can tryit again. Or when you lie the jib low in some

degree, the ERROR will be cancelled and youcan make teaching continuously.

[E26] No load is lifted.


Or, when the specified load is lifted up, it makesthe ERROR cancelled and you can make teach-ing continuously.

36

Procedures

11

Press the key.

The acquired data through the “Laying the Jiblow SPAN teaching” shall be registered internally.

The bar meter display will light off and the work-ing radius flashes as “ZUP”.The jib angle shall be displayed on the Monitorsection.

When finishing the teaching work, you can return

to the Measurement mode by the key operation of

.

When you want to start all over again, you canmake it from the step 3 as it is.

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37

6 Operation method

Now, we’ll explain the operation method with each key on the front panel.

●Various kinds of key operation should be made after interrupting the

operations of a mobile crane or a crane.

If you made key operation during driving the crane, there may have the

cause of possibility of unexpected maloperation.

6−1 key

6−1−1 Operation in Measurement mode

Changes the target of display on Monitor display section.

Limit loaddisplay

Limit radiusdisplay

Jib angledisplay

Moment No.display

Jib No.display

Range No.display

6−1−2 Operation in Function mode

The flashing values can be decremented.

38

6−2 key


By pressing on the key for 3 seconds ormore, the Functionmode can be shifted and the flash-

ing display of “F**” can be shown on the Lifting load display section.


S By the operation during flashing display of “F**”, the Measurement mode can be entered.

S By the operation during setting data, the setting shall be can be cancelled and flashing

display of “F**” will be appeared.

6−3Key


Change the connection of load cell(s).

Selection ofLoad cell 1

Selection ofLoad cell 2

Selectioin ofLoad cell 3


The flashing values can be incremented.

6−4 key


It’s ineffective.


The flashing section can be shifted (carried).

39

6−5 key


Single operation is ineffective.

By pressing on the key for more than 3 seconds with this key pressed on together, it be-

comes automatic zero function for lifting load value.

However, this operation is ineffective for the Jib luffing wire tension detective type.


Registers the data and proceeds to the next step.

40

7 Function and its operation

7−1 External control Input/Output signal

7−1−1 INPUT

PinNo.

Name Operation

1 Moment No.1×100 ・Change of Moment No.C fi th i l ith th h t f COM (Th diti h ld2 Moment No.2×100 ・Confirm the signal with the short of COM.(The condition shouldbe kept continuously.)

3 Moment No.4×100be kept continuously.)

・Setting with the binary code (1～30).

4 Moment No.8×100g y

・In the case of no connection(code 0), setting becomes effective inthe Function mode (F02)

5 Moment No.1×101the Function mode (F02).・ERROR display “E07” at the selection of non registered particular

6 Moment No.2×101ERROR display E07 at the selection of non registered particular

No.

7 Jib No.1×100 ・Change of Jib No.C fi th i l ith th h t f COM (Th diti h ld8 Jib No.2×100 ・Confirm the signal with the short of COM. (The condition shouldbe kept continuously.)

9 Jib No.4×100be kept continuously.)


10 Jib No.8×100g y

・In the case of no connection (code 0), setting becomes effective inthe Function mode (F03)

11 Jib No.1×101the Function mode (F03).・ERROR display “E07” at the selection of non registered particular

12 Jib No.2×101ERROR display E07 at the selection of non registered particularNo.

13 Jib No.1×100 ・Change of Range No.C fi th i l ith th h t f COM (Th diti h ld14 Range No.2×100 ・Confirm the signal with the short of COM. (The condition shouldbe kept continuously.)

15 Range No.4×100be kept continuously.)


16 Range No.8×100g y

・In the case of no connection (code 0), setting becomes effective inthe Function mode (F04)

17 Range No.1×101the Function mode (F04).・ERROR display “E09” at the selection of non registered particular

18 Range No.2×101ERROR display E09 at the selection of non registered particularNo.

19 Load cell No.1・Change of Load cell No.・Confirm the signal with the short of COM. (The condition shouldbe kept continuously.)

20 Load cell No.2

be kept continuously.)・Parallel setting on 1～3.・In the case of non connection (all are open),the key settingbecomes effective.

21 Load cell No.3

becomes effective.・ERROR “E06” display with plural Nos. of selection.・ERROR display “E07” at the selection of non registered particularNo.

22 Lifting up・Compensation input for Lifting up and Lifting down.・Confirm the signal with the short of COM. (The condition shouldbe kept continuously.)

23 Lifting down

p y )・Effective only for Jib luffing tension detective type.・The average data becomes effective when the both signals are ON orboth signals are OFF.

24 Key lock・Input for operation control input for key switch.

・Confirm the signal with the short of COM. (The condition shouldbe kept continuously )

25 COM

be kept continuously.)

・Other than the key of will become impossible to operate.

41

7−1−2 OUTPUT

Pin No. Name Operation

1 90 % moment of Loadcell 1

・Moment alarm signal for the Load cell 1・The status of signal output should be set with the Function modeF23 d F242 100 % moment of

Load cell 1

g pF23 and F24.

3 COM 1


･Moment alarm signal for the Load cell 2･The status of signal output is set with the Function mode F25 andF265 100 % moment of

Load cell 2

g pF26.

6 COM 2


･Moment alarm signal for the Load cell 3･The status of signal output is set with the Function mode F27 andF288 100 % moment of

Load cell 3

g pF28.

9 COM 3

10 Control output 1 ・Various kinds of control signalsC ith th t t f d t l t d f Lifti l d W k

11 Control output 2 ・Compares with the target of data selected from Lifting load, Work-ing radius, Jib angle and Moment ratio.

12 Control output 3ing radius, Jib angle and Moment ratio.・The output condition is set with the RS−232C communication or

13 Control output 4

pFunction mode from F11 to F22.

14 Control output 5

15 Control output 6

16 COM 4

17 Error output ・ERROR output : Outputs synchronous with ERROR display.B t t O t t diti i t ith th F ti d

18 Busy output ・Busy output : Output condition is set with the Function modeF45.

19 COM 5F45.

20 Buzzer output + ・Terminals for the connection with the buzzer exclusive use.B EB2112(M t hit El t i W k )

21 Buzzer output - ・Buzzer :EB2112(Matsushita Electric Works)

22 Load cell 1ACK ・The signal to indicate the Load cell being selected.

23 Load cell 2 ACK

24 Load cell 3 ACK

25 COM 6

*From COM 1 to COM 6 are isolated electrically.

42

7−1−3 Equivalent circuit

(1)INPUT

signal

COM

+12 V2.2 kΩ

470 Ω0.1 μF

photocoupler

Input signal response time :200 ms or more

(2)OUTPUT(Excludes output of buzzer)

signal

COM

Rated contact：DC30 V, 2A AC125V, 1A

7−2 Comparator

The instrument can selects 90% ofMoment ratio, 100% of Alarm output andmoreover selects the

optional target fromLifting load, Moment, Working radius, Jib angle as Control outputs 1 to 6,

and the more prepares comparator due to the optional set value.

And the more, all of the outputs can change the operational particulars in the Function mode.

Warning ●If you set the setting value for comparator by mistake, or set in the wrong

procedures, correct comparative results may not be obtained.

In due cause, there may have the possibility of output of damage signal in

peripherial rquipments.

●During the change of set vallue, the measurement is suspended.

In due course, even if the input of sensormay change, various kinds

of output will not change. There may have the case of maloperation

of the peripherial equipements, and even the possibilities of damage

in them.

●The comparative timing is synchronous with the renewal of display.

7−2−1 Change of operational particulars of 90% of Moment, 100 % of output

The 90 % of moment ratio and 100 % of output are prepared for each Load cell, and particulars

can be changeable such as Effective/Ineffective, Upper limit/Lower limit and a contact/b con-

tact with the Function mode. (Related Function F23 to F28)

[Data of F23 to F28]=＊＊＊ 100 digit101 digit102 digit

0:effective 1:ineffective0:Upper limit 1:Lower limit0:a contact 1: b contact

43

(1) Effective/Ineffective

Set the permission for executing comparator operation.

Effective：Executes operations of comparator.

Ineffective：The comparator operation won’t be made.

(The setting content of 101 digit and 102 digit will become ineffective.)

(2) Upper limit/Lower limit

It’s a selectionwhether the contact shouldbe operated fromthe set valueormoreor less than

the set value.

Upper limit :Contact operation in more than the set value

(Moment ratio≧Operates when 90 % or 100%)

Moment ratio (small) M o m e n tratio (large)90 % or 100% of contact

output90 % or 100 %

Contact operation area

Lower limit:Contact operation in less then the set value

(Moment ratio≦Operate when 90 % or 100 %)

Moment ratio (small) M o m e n tratio (large)

90 % or 100 % ofcontact output

90 % or 100 %


(3) a contact/ b contact

This is the selectionwhether the operation of above (2) should be contactONor contactOFF.

a contact : Becomes contact ON in the operation area of contact.

b contact : Becomes contact OFF in the operation area of contact.

44

7−2−2 Setting of comparative target of control output 1 to 6 and operational particulars

●The control output 1～6 are not interlocked with each change of Load

cell, Moment, Jib and Range, in due course, effective to all the

changeover

●The contents of this item can be set with RS−232C communication.

The comparative target of control output 1 to 6 can be selected from Ineffective, Lifting load,

Working radius, Moment ratio and Jib angle, and moreover change of particulars can be made

for Upper/Lower and a contact/b contact can be made in the Function mode.

(Related Function , F11, F13, F15, F17, F19 and F21.)

[Data of F11,F13,F15,F17,F19 and F21]=＊＊＊100 digit

101 digit

102 digit

0 :Ineffective 1:Lifting load, 2: Working radius3. Moment ratio, 4: Moment ratio0:Upper limit, 1: Lower limit0:s contact, 1: b contact

(1) Target of selection

Set the target of comparator operation.

Ineffective : The comparator won’t operate. (The setting contents for 101 digit and 102 digit will

become ineffective.)

Lifting load:Makes comparator operation corresponding to the Lifting load display value.

Working radius:Makes comparator operation corresponding to theWorking radius display value.

Moment ratio:Makes comparator operation corresponding to the Moment ratio display value.

Jib angle:Makes comparator operation corresponding to the Jib angle display value.

(2) Upper limit/Lower limit

It’s a selectionwhether the contact shouldbe operated fromthe set valueormoreor less than

the set value.

Upper limit :Contact operation inmore than the set value (Display of target data)≧ Set val-

ue (Operation is made.)

Target of data(small)

Target ofdata (large)

Contact output90 % or 100 %


Lower limit:Contact operation in less than the set value(display of target data)≦ Set value

(Operation is made.)

Target of data(small)

Target ofdata (large)

Contact output90 % or 100 %


(3) a contact/b contact

This is the selectionwhether the operation of above (2) should be contactONor contactOFF.

a contact:Becomes contact ON in the operation area of contact.

b contact:Becomes contact OFF in the operation area of contact.

45

7−2−3 Change of set value of control output 1 to 6

●The control output 1～6 are not interlocked with each change of Load

cell,Moment, Jib andRange, in due course, effective to all the target

of changes.


Setting the comparative data for the control output 1 to 6 can be set in Function mode.

(Related Functions are F12, F14, F16, F18, F20 and F22.)

Procedures

1

Register the set value for control output 1 to 6 inFunction mode.

Keep on pressing on the key for more than 3seconds.The Lifting load display section becomes “F**”(Function No.”) and the digits of 100 flashes onand off.

(With re−operation of the key, you can re-turn to the Measurement mode.)

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2

Set the Function No. to required No. by referringto the below table with the key in the right figure.

(With re−operation of the key, you can re-turn to the Measurement mode.

Function No.

F12F14F16F18F20F22

Target of set valueSet value for the control output 1

Set value for the control output 2Set value for the control output 3Set value for the control output 4Set value for the control output 5Set value for the control output 6



: Shift(carry) key at flashing section

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46

Procedures

3

Press on the key.Stops flashing display of Function No. and thedata is displayed on the Monitor section, and thedigit of 100 flashes on and off.Set the set value with the keys in the right figure.

(With re−operation of the key, you can re-turn to the Measurement mode.)



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4

Press on the key.The Function No. on the Lifting load section willproceed to the next No. of flashing display, andcompletes registration for data.

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5 Press on the key.The Measurement mode can be returned.

47

7−2−4 Change of Hysteresis values for control output 1 to 6

●The control output 1～6 are not interlockedwith each change of Load cell,

Moment, Jib and Range, in due course, effective to all the target of

changes..


Setting the hysteresis data for the control output 1 to 6 can be set in Function mode.

(Related Functions are F61, F62, F63, F64, F65 and F66.)

The difference of set values between the control output operates once and then returns to the

cancellation condition is called as “Hysteresis”, and the data can be set in this item here.

(1) When the control output is Upper setting

The contact operates in the following condition.

･Data≧Set value Contact operation

･Data＜Set value ｰ Hysteresis value Cancel of contact (Only during operation of contact.)

Time

DataHy s t e r e s i s

data widthSet value

ContactOperation

Cancellation

(2) When the control output is Lower setting

The contact will operate in the following condition.

･Data≦ Set value Contact operation.

･Data＞ Set value+Hysteresis value Cancellation of contact (Only during operation of con-

tact)

Time

Data

Hy s t e r e s i s

data width

Set value

ContactOperation

Cancellation

48

Procedures

1

Resistor the Hysteresis value for the contact out-put 1 to 6 in Function mode.

Press on the key for more than 3 seconds.The Lifting load display section will become“F**”(Function No.) and the digit of 100 will flashon and off.

(With re−operation of the key, you can re-turn the Measurement mode.)

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2

Set the Function No. to required No. by referringto the below table with the key in the right figure.

(With re−operation of the key, you can re-turn to the Measurement mode.(HYS=Hysteresis)

Function No.

F61F62F63F64F65F66

Target of set valueHYS value for control output 1

HYS value for control output 2HYS value for control output 3HYS value for control output 4HYS value for control output 5HYS value for control output 6


: Shift(carry)key for flashing section

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49

Procedures

3

Press on the key.Stops flashing the Function No., and the data willbe shown on the Monitor section and then the dig-it of 100 flashes on and off.Set the set value with the right keys.

(With re−operation of the key, you canreturn to the Measurement mode.)



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4

Press the key.The Function No. on the Lifting load section pro-ceeds to the flashing display of nest No., and thenregistration for the data will be completed.

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50

7−3 Automatic zero

In the Measurement mode, by pressing the key with the key pressed together for

3 seconds or more, you can make the Lifting load value to be zero (0).

However, this function shall not be used for the application of Jib Luffing crane.

7−4 Digital filter

The instrument prepares digital filter that can stabilize the data transformed into digital in the

calculation process.

Warning ●When the setting filter is wrong, there may have the possibility that cor-

rectmeasurement shall not bemade and also causes of occurrence of unex-

pected accident, in due course, take care fully.

The digital filter of the instrument can set from 0 to 9. Depending to the set value, the averaged

times for the digital filter shall be decided. (Related Function F−10)

As for the default, “3” has set.

The relation between the setting and the averaged times shall be as follows:

(Averaged times)=2n n : Set value

For example, when the setting is “6”, the averaged time becomes as follows:

(Averaged times)=26

=64 (times)

The characteristics of tendency due to the averaged times shall be as follows:

Averaged times few many

Resist to noise quick stable

Response speed fast slow

7−5 Change of display times

The instrument can change the renewal times of display in 3 steps such as, 2 times/s, once/s and

0.5 time/s. (Related Function : F−09)

As for the default, 2 times/s had set.

●Thecomparative timing for the comparator is synchronizedwith the

renewal of display.

51

7−6 Process of minus(−) area of Lifting load

You can select a display method from 3 kinds when the Lifting load becomes in the minus area.

(Related Function F−01)

As for the default, it’s set as “Normal” display.

1 Lights the minus sign (−). (Normal display)

2 Fixed display of 0 (zero). (The minus sign will not light.)

3 The absolute value display (The minus sign will not light.)

7−7 Check mode

The following check can be made in the Check mode.

1 mV/V display of Lifting load

2 V display of jib angle

3 A/D data display of internal reference

4 Check on INPUT

5 Check on OUTPUT

6 ROM version display

As for the details, refer to the Function mode “F50,F51,F52,F53,F54 and F55”.

7−8 Setting particulars through the RS-232C communication

In order to correspond the limit of overload to various kinds of instruments, the instrument de-

pends on the external Personal computer (Hereinafter, PC) for its setting of particulars of crane

and some part of calculation. And their results of controlled data shall be loaded to the instru-

ment through RS−232C communication and then make the instrument operated.

Moreover, the particulars that can be loaded to the instrument shall be limited to one (1) ma-

chine only. (In the case of new load, it’ll become overwriting mode.)

52

7−8−1 Connector connections with the RS−232C

PinNo.

Name Access point

1 F.G. Connect with “F.G.” terminal in the serial port of connecting instrument (PC).

2 RXD Connect with “TXD” terminal in the serial port of connecting instrument (PC).

3 TXD Connect with “RXD” terminal in the serial port of connecting instrument (PC).

4 RTS Connect with “RTS” terminal in the serial port of connecting instrument (PC).

5 CTS Connect with “CTS” terminal in the serial port of connecting instrument (PC).

6 DSR Connect with “DSR” terminal in the serial port of connecting instrument (PC).

7 S.G. Connect with “S.G.” terminal in the serial port of connecting instrument (PC).

8 CD Connect with “DCD” terminal in the serial port of connecting instrument (PC).

9 Not used.

10 Not used.

11 Not used.

12 (TXD)cur-rent loop

Refer the the output circuit.

13 F.G. Connect with “F.G.” terminal in the serial port of connecting instrument (PC).

14 (TXD)cur-rent loop

Refer to the output circuit.

15 Not used.

Suitable plug : DB−15PN(JAE) This plug is not attached.

7−8−2 Specifications for interface

･Baud rate :38400 bps ･Communication method :Half duplex

･Data bit length :8 bits ･Synchronous method : Start−stop synchronous

method

･Parity pit :Non ･Communication data :ASCII code

･Stop bit :1 bit ･Mode :Command mode

･Terminator :CR+LF

53

7−8−3 Example of connections

(1) 25 pins of Host

F.G.DML−802B Host (25 pins)

RXD

TXD

RTS

CTS

S.G.

CD

1

2

3

4

5

6

7

8

〜9

15

1

2

3

4

5

6

7

8

〜

19

20

21

22

〜

25

23

F.G.

TXD

RXD

RTS

CTS

DSR

S.G.

DCD

DTR

RI

Internalshort

Internalshort

9

DSR

(2) 9 pins of host

F.G.DML−802B Host (9 pins)

RXD

TXD

RTS

CTS

DSR

S.G.

CD

1

2

3

4

5

6

7

8

〜9

15

1

2

3

4

5

6

7

8

9

DCD

RXD

TXD

DTR

S.G.

DSR

RTS

CTS

Internalshort

Internalshort

RI

(3) Output circuit of current loop

12pin

14pin

Internal ofDML−802B Power source should be

connected externally.(DC 15V at max.)

54

8 Function mode

Warning ●During the procedures in Function mode, the instrument suspends mea-

surement. In due course, even when the condition of Load cell(s) is/are

changed, various outputs will not change. In this way, there may have the

case of damage due to maloperation in peripheral equipments.

Never change the mode during operation.

8−1 Setting method of Function mode

Procedures

1

Keep pressing on the key for more than 3seconds.The Lifting load display section will become “F**”(Function No.) and the digit of 100 flashes on andoff.


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2

Set the Function No. to the required value withthe keys in the right figure.




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55

Procedures

3

Press on the key.Flashing display of Function No. stops and thedata shall be displayed on the Monitor section,and the digit of 100 flashes on and off.Set the set value with the right keys.

By keeping pressing the keys in the right for 2seconds or more, the display will change continu-ously.

(With re−operation of key, the Measure-ment mode can be returned.)



t

If you set the values other than the FunctionNo. occupied, “E04” shall be displayed.Execute it starting from the step 2 again.

4

Press on the key.

The Function No. on the Lifting load section pro-ceeds to the flashing display of the next No., andthen registration for the data shall be completed.

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56

8−2 Functions of Function data

Now,we’ll show theFunctions that canbe setwith the registrationmethoddescribed in the item

8−1, as follows:

Except for these Functions, the registrationmethodmight have some difference, so please refer

to the item 8−3 and after.

･F01 Selection of display for minus (−) load

Initial value =0 0=Lights up the minus sign. (Normal display)

1=Fixed display of 0 (zero)

(The minus sign will not light.)

2=Fixed absolute value display

(The minus sign will not light.

･F02 Changeover of Moment No.

Initial value =1 1 to 15

・When the external input is existed already (except for code 0), it’s not possible

to display the selectedvaluewith the external input nor to change the valuewith

the Function mode.

・If you select theNo. that are not registered for the particulars, then theERROR

display shall be shown.

･F03 Changeover of Jib No.




the Function shown.



･F04 Changeover of range No.

Initial value=1 1 to 15



the Function shown.



･F05 ZERO adjustment on Lifting load

As for the details, rafter to item 5−3.

･F06 SPAN adjustment on Lifting load

As for the details, rafter to chapter 5−4.

・This Function shall not be executed for the Jib Luffing tension detection type.

When the No. is selected, the “E04” shall be displayed.

57

･F08 ZERO adjustment on Working radius

As for the details, rafter to chapter 5−2.

･F09 Selection of display times

Initial value =0 0=2 times/s

1=Once/s

2=0.5 time/s

･F10 Setting digital filter

Initial value=3 2n n= 0 to 9

・Selects the average times of digital filter. When the figures become larger, the

filter becomes stronger, so there may have less vibrations on the display, but

the response becomes worse.

・Where some vibrations might be occurred, using a digital filter is effective to re

move the fluctuations of display.

･F11 Setting particulars for control output (LIMIT) 1

Initial value=000

Set value 102digit：contactcondition

101digit：Upper/Lowerlimit condition

100 digit：Target of con-trol

0 a contact Upper limit setting ineffective(No output)

1 b contact Lower limit setting Lifting load

2 Working radius

3 Moment ratio

4 Jib angle

･F12 Setting the set value for control output (LIMIT) 1



Initial value=000

Set value 102 digit：Con-tact condition

101 digit：Upper/Lowerlimit condition

100：Target of control

0 a contact Upper limit setting ineffective(No output)


2 Working radius

3 Moment ratio

4 Jib angle



58


Initial value=000

Set value 102 digit：contactcondition



0 a contact Upper limit setting Ineffective (No output)


2 Working radius

3 Moment ratio

4 Jib angle




Initial value=000






2 Working radius

3 Moment ratio

4 Jib angle




Initial value=000

Set value102 digit：Upper/Lower limit con-dition of contact





2 Working radius

3 Moment ratio

4 Jib angle



59


Initial value=000






2 Working radius

3 Moment ratio

4 Jib angle



･F23 Setting particulars for 90 % of moment output of load cell 1

Initial value =001





1 b contact Lower limit setting Effective


Initial value =001







Initial value =001







Initial value =001






60


Initial value =001







Initial value =001






･F40 Start control on SPAN adjustment

Initial value =0 0=5 % of KP load

1=No limit

・It’s for the purpose of not to execute SPAN adjustment without Lifting load.

The required Lifting load at the time of SPAN adjustment is 5 % of KP load at

least.(At the initial value =0)

・This function can’t be used on the Jib Luffingwire tension detective type crane.


･F41 Start control on ZERO adjustment

Initial value=0 0=10% of KP load

1=50% of KP load

2=No limit

・It’s for the purpose of not to execute ZERO adjustmentwith the condition of lift

ing the weight.

・This function can’t be applied on the Jib Luffing wire tension detective type.


･F42 Setting target of current output (Effective when the option is installed.)※Analog output (current) is not supported because it is discontinued production.

Initial value=0 0=Lifting load

1=Working radius

2=Jib angle

･F43 Setting Off set data for current output (Effective when the option is installed.)※Analog output (current) is not supported because it is discontinued production. Initial value =0000 0000～1999

・Set the display value at the time of output of 4 mA is made.

61

･F44 Setting Off set data for current output (Effective when the option is installed.)※Analog output (current) is not supported because it is discontinued production. Initial value =0000 0000～1999

・Set the display value in the case of output of 20 mA.

･F45 Setting output condition of “BUSY” signal within the OUTPUT connector

Initial value=0 0=Relay ON in Measurement mode

1=Relay ON during normal operation of the instrument

after feeding power.

･F50 mV/V data display for load cell

Initial value=0 0=Display in normal condition

1=Display in the condition of short of input

・Working radius display section: First 11/2 digit (Sign applied.)

・Monitor display section:Last 3 digits

･F51 V data display for the Angle detector

Initial value=0 0=Display in normal condition

1=Display in the condition of short of input



･F52 A/D display for internal reference



･F53 Display of input condition

・The bar graph LED on the Moment ratio display section will light on corre−

sponding to the input signal of INPUT connector.

Key lockLifting downLifting upLoad cell 3Load cell 2Load cell 1

Momnet№1×100Moment№2×100Moment№4×100Moment№8×100

Moment№1×101Moment№2×101Jib№1×100Jib№2×100Jib№4×100Jib№8×100Jib№1×101Jib№2×101

Range№2×101Range№1×101Range№8×100Range№4×100Range№2×100Range№1×100

Moment ratio

62

･F54 Check on output

Initial value=0 0=Load cell 1 90 % of moment

1=Load cell 1 100 % of moment





6=Control output 1(LIMIT1)






12=Error

13=Busy

14=Buzzer

15=Load cell 1 ACK

16=Load cell 2 ACK

17=Load cell 3 ACK

・Increaseanddecreaseof the data canbemadewith thekey operation of and

.

・While the key is pressed on, corresponding output of OUTPUT connector

becomes ON and the LED lights on.

･F55 ROM version display

・Working radius display section: First 11/2 digit (A decimal point is applied.)


･F56 Check on the current output※Analog output (current) is not supported because it is discontinued production.

Initial value =4 4=Outputs 4 mA.

12=Outputs 12 mA.

20=Outputs 20 mA.

・Increase/decrease of the data can be made with the key operation of and

.

・While the key is pressed on, current value of set portion shall be output.

･F57 Display of crane type (name)

・The instrument displays P/N of crane.

3 Roman characters (Lifting load display section), 3 numeric characters (Working

radius display section)

63

･F58 Check on setting content

・Displays “Jib length” and on the working radius and “KP load” on theMonitor.

･F59 Check on setting content

Displays “Load cell load ratio” on the Monitor.

･F61 Hysteresis setting of control output (LIMIT)1

Initial value=000 000～999


Initial value =000 000～999


Initial value =000 000～999







･F70 Setting the weight for SPAN teaching, mass of bucket

As for the details, refer to Chapter 5-5.

・This function can’t be applied on the Jib Luffing wire tension detective type

crane.


･F71 Execution of teaching



crane. When the No. is selected, the “E04” shall be displayed.

･F72 ZERO adjustment on lifting load

･F73～76 Correction of teaching dataAs for the details, refer to Chapter 8−3.



･F77 Limit of teaching start

Initial value=0 The data difference of A/D between the 0=ZERO

teacing and SPAN teaching is more than±1000 counts.

1=No limit

・It’s for the purpose of not to execute SPAN teaching without Lifting load.



64

･F99 Memory clear

The registered data except for teaching can be initialized.


65

8−3 Correction of Teaching data(F73、F74、F75、F76)

You can check on the contents of acquired mV/V through teaching and also add some correc-

tions.

Warning ●The correction of data shall become the overwritingdata acquired

through teaching. In due course, as for the recovery the data, write

the same data again after correcting the data..

Procedures

1

Make the data correction acquired through teach-ing in the Function mode.

Press on the key for more than 3 seconds.The Lifting load display section becomes “F**”(Function No.) and the digit of 100 will flash onand off.


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2

Set the corresponding Function No. to the teach-ing data to correct by using the right keys accord-ing to the below table.

(With re−operation of key, the Measure-ment mode can be returned.)

Function No.

F73

F74

F75

F76

Concerned teaching data

Raising ZERO data

Laying ZERO dataRaising SPAN dataLaying SPAN data

: Decrement key for flashing display: Increment key for flshaing display


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66

Procedures

3

Press on the key.Stops flashing Function No. and flashing displayof Point angle is shown on the Working radiussection.Decide the Point angle to make correction on thedata shown in the right figure.The right keys will change continuously by press-ing on the key for more than 2 seconds.

・Point angle20.0° 25.0°30.0° 35.0°40.0° 45.0°50.0° 55.0°60.0° 62.5°65.0° 67.5°70.0° 72.5°75.0° 77.5°80.0°

(By the key operation of, the corrected datawill not be registered, and returns to the step 1.)



: Ineffective

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4

Press on the key.Stops flashing Point angle, and then the teachingdata corresponded to the Point angle shall be dis-played, and the digit of 100 flashes on and off.The data can be changed with the right keys.

・Teaching data*Range±0.000～1.999 mV/V*Minus(−) data All of the decimal pointsflash on and off.

EX. -1234=「12.3.4.」

(By the key operation of, the corrected datawill not be registered, and returns to the step 1.)




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67

Procedures

5

Press on the key.The Point angle on the Working radius sectionreturns to flashing display and the data correctionshall be completed.In the case of correction on another Point angle,re−start it from the step 3.

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6

Press on the key.The Function No. on the Lifting load section willreturn to flashing display.In the case of correction on another teachingdata, re−start it from the step 2.


68

8−4 Memory clear (F-99)

The data memorized in the internal (memory) of the instrument can be initialized.

However, the followings are not initialized.

・Crane’s particulars data registered through the RS-232C communication.

・Teaching data (Only for Jib Luffing tension detective type)

Warning ●By executing themode, all of the data except for Crane’s particulars

data and teaching data, are initialized.

In due course, it may cause maloperation, so care should be taken

fully when operation is made.

Procedures

1

Execute the Memory clear in the Function mode.

Press on the key for 3 seconds or more.The Lifting load display section becomes“F**”(Function No.) and the digit of 100 flasheson and off.


t

2

Set the Function No. to “F99” with the right keys.




t

69

Procedures

3

Press on the key.The Monitor section of “CLR” flashes on and off.

t

4

The Memory clear shall be suspended with all the

keys other than the key, and returns to thestep 2.

5

By pressing on the key for 3 seconds ormore, the flashing display of “CLR” will stop, andMemory clear is executed.After about 2 seconds later, the display will be re-turned to step 1 automatically.

3 s

t

333 sce

70

9 Sold separately (current output)　　※Analog output (current) is not supported because it is discontinued production.

Warning ●Current output will not interlock with each changing function of

theLoad cell,Moment, Jib andRange, and it becomes a fixed setting.

In order to correspond to each changeover, you have to re−set them.

As for the options, we prepare current output (4 mA to 20 mA)(P/N : DML−802B−P07).

9−1 Related Function

F42 Selection of target of currentoutput

Lifting load, Working radius, Jibangle

F43 Setting off−set data for currentoutput

Setting display value of 4 mAoutput

F44 Setting scaling data of currentoutput

Setting display value of 20 mAoutput

F56 Check on current output Forced output of 4,12, 20mA

9−2 Specifications

・P/N :DML802B−P07

・Output :DC 4mA to 20 mA

・Load resistance Less than 60Ω (ohms)

・Non linearity :Within 0.1 % F.S.

・Output renewal times :Synchronous with display times (Set with the Function

mode F09.)

9−3 Connecting method

9−3−1 Note on related to connection

Warning ●For the connection of the instrument, strict to follow the following

items. If there are neglected, there may cause unexpected failure

and/or damage.

●Be sure tomake the connection after the power supply is set to OFF.

・The terminal board on the rear side of the instrument is made of resin, so never fall it down nor

give strong shock on it.

・The clamping torque for terminal screw on the terminal board is about 120・Ncmatmaximum.

・The solderless terminal that suits the terminal board of the instrument is as shown in the

table as below.

71

Width of solderless terminal Suitable solderless terminal

Less than 8.0 mm 1.25−4 or Y type 1.25−4

・The cable connected with the main body should be separated from the noise source such asI/O for control, power supply line as possible.

・The Conduit wiring should be the type for exclusive use. Avoid sharing it with other lines.

9−3−2 Connection

The terminal board (A−OUT) for the current output can be installed more on the rear panel.

(When there’s no indication of option, the dummy shall be installed)

+

−4 mA to 20 mA

9−4 Setting of particulars for current output

9−4−1 Selection of target of output

Selection of targeteddata to compare the current output canbemadewith theFunctionmode

(F42). The target can be selected from Lifting load, Working radius and Jib angle.

9−4−2 Range setting for the current output

Set the display value (Off set) at 4 mA of current output with the Function mode (F43).

Set the display value (scaling) at 20 mA current output with the Function mode (F44).

Current output

Off setvalue

Di sp layvalue

4 mA

20 mA

S c a l i n gvalue

72

9−5 Fine adjustment on current output

Make fine adjustment with the “Z” and “S” trimmer on the rear panel.

SPAN adjustment trimmer

ZERO adjustment trimmer

73

10 Troubleshooting

When abnormal point(s) is/are found during the operation of the instrument, check by the fol-

lowing procedures. Moreover, when you can’t find applicable item nor solve the symptom of

trouble even after you have taken some measures, contact us.

Feed power

OperationN.G.

OKOperation error

Executing troubleshooting

Normal operation

Start of measurement

74

10−1 Troubleshooting

Execute troubleshooting.

1

Does supply voltage satisfythe specifications?

NO

YES

Supply power source suitable for thespecifications.DC 24 V (18 V to 36V)

The display is wrong.

NO

YES

2

The output is wrong.

NO

YES

3

The external control inputis wrong.

NO

YES

4

Impossible to inputkeys.

NO

YES

5

Output of 4 mA to 20 mAis wrong.

NO

YES

Inform us about the contents of failure and situation in details at site. ※Analog output (current) is not supported

because it is discontinued production.

75

(1) Wrong display

Some display can be seen.NO

YES

Exchange the fuse by referring to theChapter 13−1.

1

The fuse has blown.NO

YES

The ERROR displays.

NO

YESExecute ERROR treatment by referringto the Chapter 10−2.

The display is constantand doesn’t change.

NO

YES The following causes are considered.①The connection is wrong.Check the connection by referring to theitem 4. Remove the plug of LC (loadcell)1 to LC 3 and plug of RADIUS oneby one in order, and when removed andat the time the display returns to thenormal, then the cable connected withthe plug or the load cell may have somedefects. And especially, check the condi-tion of soldering inside of the plug care-fully.Refer to the Chapter 10−3, for the singlecheck method of load cell.②Excitation voltage to the transducer iswrong. Remove each plug of LC 1 to LC3, and measure the voltage between theeach terminal in below, located to themain body of connector.

ABCDEF

LC 1 to 3 RADIUS

V V

++

− −digitaltester digital

tester

GCheck that the voltage is about 12 VDC. When the Error is found, it may consider that some defects in the instrument, so contact us.

1-1

ABCD

Inform us about the contents of failure and situation in details at site.

76

The display isunstable.

NO

YES

1-1

Doesn’t meet with themeasured value.

NO

YES

The following causes are considered.①The connection is wrong.Check the connection by referring to theChapter 4. Remove the plug of LC (loadcell)1 to LC 3 and plug of RADIUS one byone in order, and when removed and atthe time the display returns to the nor-mal, then the cable connected with theplug or the load cell may have some de-fects. And especially, check the conditionof soldering inside of the plug carefully.Refer to the Chapter 10−3, for thesingle check method of load cell.②Excitation voltage to the Load cell iswrong.Execute the Function mode (F50) withthe data=1.

F50→−19000 to −17000If the value stabilize within the above display range, then defect in the load cell side might be considered.Check the connection of ① again and also make a single check on the load cell. If the display range is over, or un-stable, there may be some defects in the instrument, so contact us.

Make re−calibration according to theChapter 5.


77

(2) Output is wrong.

The set value is correct.NO

YES

Check the comparator according to theChapter 7−2.

2

Intended operation is notmade.

NO

YES

The contact outputdoesn’t become ON.

NO

YES The following causes are considered.①Wrong contact due to the use of otherthan the rated contact.The capacity of contact will be AC 125 V,1 A, DC 30 V 2A.

Check the voltage and applied load andso on.②Wrong input circuit by the customer.Check to operate the output with theFunction mode (F54) optionally.

The connecting methodis right.

NO

YES

Check the condition of connection byreferring to the Chapter 4.


Check the comparator according to theChapter 7−2.

78

(3) External control input is wrong.

3

Doesn’t respond to theinput signal.

NO

YES

The following causes are considered.①Some defect of the instrumentCheck the response condition of inputsignal with the Function mode (F53).

The connecting methodis right.

NO

YES

Check the condition of connection byreferring to the Chapter 4.


(4) Key operation isn’t made.

4

Key lock is made with theexternal control signal.

NO

YESCancel the key lock.


79

(5) External control input is wrong.※Analog output (current) is not supported because it is discontinued production.

5

The load resistance is 26Ω(ohms) or less.

NO

YES

①Disconnect the connection with cur-rent output terminal (A−OUT), andmeasure the current value directly.(DCmA range)②Execute the Function (F56) and mea-sure the current value.

Connecting method isright.

NO

YES

Check the connection according to theChapter 4.

Set the load resistance less than 260Ω(ohms).

The range is right.NO

YES

Set properly according to the Chapter 9.

4mA, 12mA and 20mAare output.

NO

YES

Contact us.


80

10−2 ERROR display

Display ERROR content Measures

or

The output of load cell or theangle detector exceeds normal

range.

・Check that whether abnormal load isapplied on the load cell or not.

・Check that the jib angle is abnormal ornot.

・Check the installation direction of angledetector.(Refer to Chapter 9−3.)

・Execute the Function mode (F50) withthe data=1. When the display result issuitable to the following range, there mayhave few possibility in defect of the in-

strument. But, the defect might be causedfrom the load cell with connections in-

cluded.

F50→ −19000 to −17000

・Check the connection with the load cellby referring to the Chapter 4.

・Check the single load cell by referringto the Chapter 10−3.

Flashing ofmeasuredvalue

The measured value exceedsthe display range.

・Check that whether abnormal load is

applied on the load cell or not.・Check that the jib angle is abnormal or

not.・Check the installation direction of angle

detector.(Refer to Chapter 9−3.)・Make calibration by referring to the

Chapter 5.

These are internal errors.

E01:RAME02:EEPROME03:A/D reference

Contact us.

The Function No. is out of thespecified value.

Check the Chapter 8, and set a correctvalue.

Plural sections have made forthe external input of change-over of Moment No. or Jib No.

or Range No.

Check the selection No. and then selectonly one (1).

Plural load cells are selected atthe input of changeover of load

cells.

Check the load cell to use, and then selectonly one (1).

81

The No. that has not registeredas the particular has specified.

E07→Load cell,Moment, Jib

E09→Range

Check the selection No. and set a properNo.

You’re going to make adjust-ment with the load display of

[OF]and[-OF].E12→ZERO adjustmentE13→SPAN adjustment

Cancel the display of [OF]and [-OF], thenmake adjustment one by one.

You’re going to make SPAN ad-justment with the condition of

no lifting load applied.

Make SPAN adjustment after Lifting load.

You’re going to make adjust-ment with the condition of [OF]or [-OF]display of Working ra-

dius.

Cancel the display of [OF]and [-OF], thenmake ZERO adjustment.

On the Jib Luffing tensiondetection type of crane, you’regoing to make the jib movedduring ZERO adjustment.

Make re−adjustment after suspendingZERO adjustment or returning the Jibcondition as it was before. During the ad-justment is made, never make the opera-

tion of the Jib.

During Raising the Jib upteaching, you’re Laying the Jib

down.

Make the jib raised up.

During Laying the Jib downteaching, you’re Raising the Jib

up.

Make the jib laid down.

You’re going to make ZEROteaching with the condition of

load lifted up.

Make ZERO teaching with no load ap-plied.

You’re going to make SPANteaching with no Lifting load

applied.

Make SPAN teaching with the weights(Bucket, etc.) lifted up.

82

10−3 Single check method for a transducer (load cell)

10−3−1 Measurement on resistance value of load cell

redwhtgrnblushield (yel)

Measure the resistancevalue with the digitaltester or the like.

When the measured resistance value is not suited for the value in the below specified table, some

defects might be considered. In due course, ask us for the exchange/ repair of load cell.

P/N of loadResistance value

P/N of loadcell Between red$white Between

green$blue

CCR1(B) Approx. 350 Ω Approx. 350 Ω

CL−B Approx. 600 Ω Approx. 600 Ω

CLS Approx. 400～500 Ω Approx. 350 Ω

10−3−2 Measurement on absolute resistance value of load cell

redwhtgrnblu

shield(yel)

RRR

R

Measure the resistance value with the digital tester between the shield wires and signal wires

individually. It’s normal when the condition of over−ranged might be appeared, but if there

may have displayed some measured values (some M Ω), it’s judged as shortage of insulation.

In due course, consider the exchange of load cell, and so on.

Warning ●For the measurement of insulation, never use a megger.

Because, the load cell will be destroyed.

10−3−3 Measurement of output voltage of load cell

redwht

grnblu

shield(yel)

+− V

Connects with the instrument.

Connect the red, white and shield cables with the instrument, and measure the voltage between

the green $blue, with the condition of only the blue and green cables have removed.

When the measured value exceeds the value shown in the below table, there may have the possi-

bility that the load cell has destroyed due to overload or like that.

Ask us for the exchange/ repair of load cell.

83

P/N of load cell Voltage

CCR1(B) Less than 24 mV

CL−B Less than 6 mV

CLS Less than 12 mV

10−3−4 Measurement on output voltage of angle detector

angle detector

red

blk

wht

V

−

+

Connects with the instrument.

Measure the voltagewith digital tester.

Connect the red and black cables with the instrument, and measure the voltage between the

white$black, with the condition of only the white cable has removed.

Now, the relation with the angle and output voltage shall be shown.

1.925 V 3.5 V 5.075 V

0° 45° 90°

If there may have some abnormality in measurement of voltage, ask us for the exchange/repair

of load cell.

●The contents of this manual may subject to change without notice.

HEAD QUARTER: MinebeaMitsumi Inc.

4106-73 Miyota, Miyota-machi, Kitasaku gun, Nagano-ken 389-0293 Japan Tel: +81-267-32-2200 Fax: +81-267-31-1350

Sensing Device Product Sales Management: 1-1-1, Katase, Fujisawa-shi, Kanagawa-ken, 251-8531 Japan Tel: +81-466-23-2681 Fax: +81-466-22-7191

Sensing Device Business Unit FUJISAWA PLANT 1-1-1, Katase, Fujisawa-shi, Kanagawa-ken, 251-8531 Japan Tel: +81-466-22-7151 Fax: +81-466-22-1701

KARUIZAWA PLANT 4106-73 Miyota, Miyota-machi, Kitasaku gun, Nagano-ken 389-0293 Japan Tel: +81-267-31-1309 Fax: +81-267-31-1353

HOMEPAGE ADDRESS http://www.minebea-mcd.com

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