Plantas Electricas

ECU-02

Ver2.0

AUTOMATIC ENGINE CONTROL UNIT
OPERATOR’S MANUAL
MCPHERSON CONTROLS

McPherson Controls
4501 NW 27 Ave
Miami, Florida 33142
Ph 305-634-1511
Fax 305-634-1461
www.mtspowerproducts.com

Warning
The ECU-02 can be easily damaged if "Battery Negative" B- is introduced to terminal 9,10,11,12,
13 and 14 of the CT Current Transformer input terminals on theECU-11/22 Relay board.
When modernizing and installing the ECU-11/22 Relay board in older machines, be aware that
it was the custom years back to wire one or all of one of the legs of the CT to ground. If you do this
with the New ECU-11/22 Relay Board you introduce B- and 120Vac into the computer terminal
relay board burning the input diodes and the fuses of the ECU, making the ECU-02useless.
Remember that most generators have the Neutral of the generator connected together to the
Battery Negative on the chassis. This setup feed 120 volts AC to the ECU-02 through the grounded
Terminals of the CT. SO MAKE SURE THE CT's ARE NOT GROUNDED and individualy wired to
the terminals 9 thought 14.
Therefore look for grounded CT terminal and rewire the old CT's properlyinto the new ECU system
on terminal 9 though 14 on the ECU-11/22 relay board.
Also if you like to monitor the CT's with a older style Analog meter you have to use 2 CT's one
independent CT for the ECU and another for the Analog Meter.

To Engine Pre-Heat 30A Output

J2

To Engine Starter Solenoid 30A Output
Fuel Energize to STOP/START 30A Output
Programmable

Battery +Connection Use AWG10 wire
Battery - Connection Use AWG10 wire

MPU Magnetic Pic-Up
MPU Magnetic Pic-Up
Programmable Alarm 4
Programmable Alarm 3
Programmable Alarm 2
Programmable Alarm 1
Low Fuel Switch Input
Generator Overload NO Input
High EngineTemp Switch NC Input
Low Engine Oil Pressure NO Input
Program to NO if
Emergency STOP NC Input
not used
Programmable Output 7AEnergize to START Auxiliary 7A Output
6
5

Remote Start wires from ATS

4

CT1

3
2

WARNING
DO NOT WIRE THE
OLD VOLT AND AMP
METERS & IN PARALLEL
WITH THE INPUT OF
THE ECU-02

CT2

1
10

CT3

9
8

R
S
J1

T

L3

Single
Phase
operation

This are the minimum connection
needed in order to run the
ECU-01 properly in 3 Phase

L2
L1

Warm upLoad Contact 7A Output

This are the minimum connection
needed in order to run the
ECU-01 properly in 1 Phase

TB-3
TB-2

30A MAX

Engine PreHeat

CT1

CT2

5
4
3
2

30A MAX
30A MAX

GEN

Mag PicUp

Fuel
Remote
Start

The Fuel Solenoid
can be programed
for use in:
Energize to STOP
Energize to START
Systems

Made in the USA by
MTS PowerProducts
4501 NW 27 Ave
Miami Florida 33161
phone 305-634-1511

www.mtspowerproducts.com

Programmable output 7A
Energize to start auxiliary 7A output

Warm Up Contactor

LOAD

Starter
Programmable Inputs

CT3

-+
432 1

Battery

Low Fuel Sender
Overload Sensor
INPUTS
Water Temperature sender
Oil Pressure sender
Emergency STOP

L1
L2
L3

J2
J1

1
29
3023
25
27
22
24
26
20
18

21
19
17
15
13

16
14
12
10

8

11

9
7
5
3
1

J2 Harness to ECU-02
J1 Harness to ECU-02

Wiring Diagram for Oil pressure and Water Temperature
Meter using the Susuki meters and senders
Oil Pressure
Meter

For 24 volts use wire red to
24v Terminal and use 24 volt light
24V L

S

12V

Red
Black

Battery +Battery -

Gray
Blue
Green

Red

High Temp.
Meter

24V L

Temp.
Sender

Black

12V
S

Water Temp. Switch Sender
Normally Open on Engine block

Terminal 20 on ECU-22/11

Oil Pressure
Sender

Oil Pressure Switch Sender
Normally Close on engine Block

Terminal 21 on ECU-22/11

S

ECU-CON RELAY MODULE

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