Download - 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
Unit Manual : ESP-2000B Page2(9)
1. Specification
Unit Manual : ESP-2000B Page3(9)
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
Unit Manual : ESP-2000B Page4(9)
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
Unit Manual : ESP-2000B Page5(9)
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)
Unit Manual : ESP-2000B Page6(9)
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.
Unit Manual : ESP-2000B Page7(9)
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
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
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
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Unit Manual : ESP-2000B Page8(9)
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
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
ENG. Span Output Voltage Setting
Product Date Setting
3
4
5
ENG. Zero Output Voltage Setting
Software Group Setting6
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Taco Fail ENG. Run Over Speed Fuel Limit SpareSafe Start
Unit Manual : ESP-2000B Page9(9)
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.