esp-2000b

SPEED MEASURING UNIT USER MANUAL

(ESP-2000-B)

Unit Manual : ESP-2000B Page1(9)

Used for HIMSEN(H25/33, H21/32) and L27/38 Engine, this product,

SPEED MEASURING UNIT is designed to take frequency values

measured by SPS-02 Pick-Up Sensor(for Engine RPM) and TPS Pick-Up

Sensor(for T/C RPM), both of which are mounted onto Flywheel Cover,

and thereon calculate the two RPMs by applying the number of Teeths,

transmitting signals(0~6V) to indicate Engine RPM and T/C RPM on

display and providing Driver outputs to drive Engine-related Relay.

Over than 100MΩInsulation Resistance

SteelCase Material

0 ~ 60000 Rpm ( 0 ~ 2kHz )Rpm

Teeth&

Rpm

T/C Speed

Teeth: 1 EA ~ 500 EA(MAX. Rpm = 1200)

0 ~ 1200 Rpm

ENG. Rpm Display On FND. Display Method

Relay Output Status Display LED.

TPS Sensor

SPS-02 Sensor

6. Spare

5. Fuel Limit

4. Overspeed

3. Running

2. Safety-start

1. Tacho-fail

0 ~ 10Khz ( +12V, Square Wave ) ENGFrequency Output

0~6V

0~6V

T/C

0 ~ 2Khz

0 ~ 10Khz

12V MAX. ( 300mA )

+UB = 12V MAX. ( 300mA )

T/C

T/C

± 15V Sine Wave

+UB(10V~40V)-1.8VSquare Wave

720gWeight

0 ~ 9999Display Range

H25/33, H21/32,L27/38Applied Engines

-10 ~ +65℃Operating Temperature

ENG.Power Source for Sensor

ENG.Frequency Range

FET Driver MAX=100V,500mA

Relay Driver Output

ENG.Voltage Output

Output

Sensor Type

ENG.. Speed

113(W)ⅹ100(H)ⅹ60(D) (UNIT:mm)

Less than 95% RH. (Non Condensing)

- 25 ~ +70℃

Sensor Type

Digital setting

F.S ±0.2%

5.04W ( MAX. : 220mA , DC24V)

DC 24V ±20%

ESP-2000-B

Dimension

Accuracy

Storage Temperature

Operating Humidity

Input

Setting

Consumption Power

Power Supply

MODEL

ITEM


1. Specification


2. Product Composition

Figure1. Product Composition

① Status Display LED

Figure2. INDICATION LEDs

Safety Start LED: Indicate the complete stop of Engine.

ENGINE Run LED: Indicate the running of Engine.

Over Speed LED: Indicate Engine RPM equals or exceeds Overspeed

RPM.

Tacho Fail: Indicate Start Fail which means RMP sharply decreases from

200 to 0 at the time of Pick-up Sensor Open.

Fuel Limit: Indicate that Engine RPM equals or exceedsFuel Limit RPM

Spare: Used as Spare LED

② Setting Buttons

Used to set RPMs for Relay Driver Outputs, Timer, Teeth, Engine RPM, Engine

Output Voltage, Production Date and Software Group.

③ RELAY DRIVER OUTPUT

④ RPM OUTPUT: Output voltages of 0 to 6V for Engine and T/C RPMs.

⑤ RPM Display: Digitally display RPM of Engine under work.

①Status Display LED

②Setting Buttons

③ RELAY DRIVER OUTPUT

④RPM OUTPUT (0~6V)

⑤RPM Display

Taco Fail ENG. Over Fuel Limit Spare Safety


3. FUNTION DESCRIPTION

3-1 ENGINE RPM MEASURING

Speed Measuring Unit receives frequencies, measured by Pick-up Sensor(for

Engine RPM) mounted onto Flywheel Cover, and internally reduces RPM as

lllustrated below and thereon operates related outside Relay(MY4) by using its

built-in Driver.

(RPM Reduction and Output Range)

3-2. TURBO CHARGER RPM MEASURING

T/C Speed Pick-Up frequency is signaled from Pick-Up inside T/C. The

following shows calculations of RPM, frequency(Hz) and output(V) and their

correlations. This product has 2 T/C Pick-Up Signal Holes.

(RPM Reduction and Output Range)

0 ~ 6 V 0 ~ 6 V Output [V]

0 ~ 1200 RPM 0 ~ 1200 RPM RPM

1200(RPM)Ⅹ282 (Gear) /60Sec =5640 Hz

1200(RPM)Ⅹ286(Gear) /60Sec =5720 Hz

Calculated Frequency[Hz

H25/33 H21/32 Classification

0 ~ 6 V Output [V]

0 ~ 60000 RPM RPM

60000(Rpm)Ⅹ2(Hole) /60Sec =2000Hz Calculated Frequency[Hz]

T/C MAX. RPM: 60000 Classification


3-3. RELAY DRIVER OUTPUT RELATED TO RPM

Figure3. ESP2000B OUTLINE AND CONNECTION DIAGRAM

3-3-1. TACHO FAIL (Relay contact: Normal Close): Terminal 16

⑴ Normal Close works at the time of power supply.

⑵ In case that any one of the 3 lines for Pick-up Sensor is opened, it causes

the status of Fail, and OPEn (Sensor Open) is displayed on FND.

(The status is removed when Sensor is properly connected.)

⑶ In case that RPM does not reach 50(fixed) within 5 sec after Start Signal

becomes on, it caused the status of Fail, and S. FAL(Start Fail) is

displayed on FND.

(Tacho Fail is removed when Engine RPM is 200 or over or at the time of

Power resetting)

⑷ In case that RPM sharply decreases 200(fixed) to 0, it causes the status of

Fail in 1 second(fixed), and T. FAL(Tacho Fail) is displayed on FND.

(Tacho Fail is removed when Engine RPM is 200 or over or at the time of

Power resetting)


3-3-2. SAFETY START (Relay contact: Normal Open): Terminal 17

① This output indicates the stoppage of Engine. It works 5 seconds(fixed)

after RPM becomes 0 duing Power supply

② The output works 5 seconds(fixed) after RPM becomes 0 when Start Signal

and Safety Start are all off.

③ The output is removed when Tacho Fail is caused, Safety Start Off RPM is

exceeded(140 RPM = Setting Available), or Engine Start Signal becomes

on.

3-3-3. ENGINE RUNNING (Relay contact: Normal Open): Terminal 18

① This output indicates the status of Engine running. It works when Engine

speed is more than Engine Running On RPM or 200, or Engine Running

Delay Timer (10 sec = Setting Available) completes its counting.

② The output is removed when Engine Speed decreases again from Engine

Running On RPM or over to Engine Running Off RPM or below(640 RPM =

Setting Available)

③ The output is removed when Engine RPM becomes 200 or below after

Engine running provided Engine Running Delay Timer (10 sec = Setting

Available) completes its counting.

3-3-4. OVERSPEED (Relay contact: Normal Open): Terminal 19

① This output works when Engine speed is Enginer Over Speed On RPM or

over.

② The output is removed when Engine speed becomes 10% of Engine Over

(i.e. : 828 -(828´0.1) = 745)

3-3-5. FUEL LIMIT (Relay contact: Normal Open): Terminal 20

① This output works at the time of Fuel Limit On RPM (25 RPM = Setting

Available) or over and is removed at the time of Fuel Limit Off RPM (0 RPM

= Setting Available) or below.

② A relevant LED in front side lights off when Engine completely runs.


4. RPM & TIMER SETTING

RMP and Timer are set with relevant Push Buttons in front side which have the

following functions.

Figure4. SETTING PUSH BUTTONS

① Mode Push Button: Convert to next Setting Mode.

② INC. (Increase) Push Button: Increase set value at a high rate when kept

pressed for more than 5 sec.

③ DEC. (Decrease) Push Button: Decrease set value at a high rate when kept

pressed for more than 5 sec

④ Save Push Button: Save the present value

(Press down on Save Push Button, and its LED lights up simultaneously and

then lights off)

(NOTE: Keep Mode Push Button pressed for more than 5 sec under Safety Start to

enter Setting Mode when Engine Rpm is 0. If the button is kept pressed for

another 5 sec or over or if the button is not manipulated any longer, Setting Mode

is removed.)

SET

Inc. Dec. Save MODE CHANGE

MODE

Over Speed On RPM Setting

Running On RPM Setting

ENG. Running Off RPM Setting

Safety Start Off RPM Setting

0

1

2

3

4

5

MODE

ENG. Running On Delay Timer Setting

Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start





Spare On RPM Setting

Spare Off RPM Setting

8

9

Fuel Limit Off RPM Setting7

Fuel Limit On RPM Setting6






4-1. Mode for Inputting RPMs for Relay Outputs and Time Counts

① Keep Mode Push Button pressed for 5 seconds or over to enter Setting

Mode(RPM Display flickers.)

② For each setting, its relevant LED, illustrated below, lights up and the set

value is displayed.

③ Press down on INC/DEC Push Button to input a newly set value and then

ENT. Push Button to save the value.

Teeth Setting

0

1

MODE

2 ENG. MAX. RPM Setting



ENG. Span Output Voltage Setting

Product Date Setting

3

4

5

ENG. Zero Output Voltage Setting

Software Group Setting6






4-2. Mode for Inputting Teeth, Engine RPM, Engine Output Voltage, Zero,

Span, Production Date, Software Group

① Teeth Input : Input the number of Engine Wheel Teeths.

② ENGINE RPM Input : Input Max. Engine RPM to output max. voltage of

Engine.

③ ENGINE Zero Setting: Set with INC/DEC Key until 0V becomes the output.

④ ENGINE Span Setting: Set with INC/DEC Key until 6V becomes the output.

esp-2000b

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