6_PANEL

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E P G I

-VI- PANELS

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DESCRIPTION

In the previous Cat generator control panels, relay are used in conjunction with

switches, to make a logic panel to protect the engine & the generator .

The typical logic, uses a signal to start the engine and a magnetic pick up that

feeds an ESS .

The EMCP uses a similar type of logic but a microprocessor performs the

functions of all the relays and timers used before.

Engine Control Module (ECM)

Alarm Module (AML)

Standard Panel features

AC Metering Module (ACM)

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EMCP VERSUS CONVENTIONAL

SR 4 Generator

Engine

MPU

OPS 1

OPS 2

ESS

TDR

WTSU

WTAS

OPSU

WTS

LWTAS

LOPAS 1

LOPAS 2

Junction box

EMCP I

SR 4 Generator

Engine

CTP

DSU

Water temperature

pick up

Oil pressure transducer &

data sending unit

Magnetic pick up

MPU

WTS

WTSU

WTAS

LWTAS

OPSU

Water temperature switch.

Water temp. sending unit.

Water temp. alarm switch.

Low water temp. alarm switch.

Oil pressure sending unit.

OPS 1

OPS 2

LOPAS 1

LOPAS 2

MPU

Oil pressure switch 1

Oil pressure switch 2

Low oil pressure alarm switch 1

Low oil pressure alarm switch 2

Magnetic pick up

EMCP

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dIAG CODES

01 dIAG

When the ECM detects a diagnostic failure, one of the following codes will be

displayed:

01 dIAG

No magnetic speed pickup (speed sensor signal)

02 dIAG

No oil pressure / temperature sensor (transducer) signal

03 dIAG

Problem with inputs from engine control switch (ECS)

04 dIAG

Loss of setpoints programmed into the ECM memory

05 dIAG

Engine shutdown with no shutdown command from the ECM

06 dIAG

Internal failure of the ECM or unstable voltage supply

07 dIAG

Internal ECM programming switch does not match the value

programmed into setpoint #2

08 dIAG

Temperature probe problem

09 dIAG

High oil pressure when the engine is not running and has cooled

down

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PROGRAMMING PARAMETERS

The set points programmed into the ECM are factory set. They can be changed to conform to the

appropriate specifications when the ECM IS moved from one engine type to another or when a

special setting (usually overcrank or cycle crank) IS needed.Install a security seal on the access

cover to prevent unauthorized tampering Do not open the cover in a humid environment and

replace cover as soon as possible. A continuous bead of 6V6640 Sealant must be used to reseal

this cover against humidity.

Setpoint information is stored then used in the control strategy of the ECM. To program, shutdown

the engine, remove access cover (1) on the backside of the ECM. A potentiometer (2) rotary switch

(3) and momentary switch (4) will be visible. Note the position of rotary switch (3).

Turn rotary switch (3) to the position that corresponds to the setpoint to be adjusted. The LCD

display will now read the position of the rotary switch and the data stored at that location. Press

momentary switch (4). The data information corresponding to the position of the potentiometer will

flash. Adjust potentiometer (2) to change the flashing data as desired. Once the data is correct,

press momentary switch (4). The data information should stop flashing, Reprogramming of the

setpoint is now complete. Return the rotary switch to position 0 if the system has an energize to run

fuel solenoid or position 1 if the system has an energize to stop or latching fuel solenoid, The

engine will not run when in the program mode or if the position of the rotary switch does not

correspond to the operating mode programmed into setpoint 02 .

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SETPOINTS

02 ETR/ETS And Latching:This setpoint value will describe the operating mode of the ECM.

0 or 2 programs the ECM to operate with an energize to run (ETR) fuel solenoid.

1 or 3 programs the ECM to operate with an energize to shutdown (ETS) or latching fuel

solenoid.

2 or 3 programs the ECM to ignore faults that could be caused by the transducer

(sensor) module, i.e., high coolant temperature, low oil pressure and sensor module

malfunction will not shut down the engine.

03 Metric/English: A setpoint value of 0 will command the ECM to display engine parameters

in English. A setpoint value of 1 will display metric:

04 Ring Gear Teeth: This setpoint value must be same as the number of teeth on the ring gear.

Range 95 to 3.50.

05 & 06 Overspeed: Program one of these positions to the desired engine speed at which an

overspeed shutdown should occur. Position 05 has a range of 400 to 2950 rpm. Position

06 has a range of 2450 to 5000 rpm in increments of 10 rpm.

07 Crank Termination Speed: Once the engine speed passes this setpoint, the starter will no

longer be energized. Range is 100 to 1000 rpm in increments of 10 rpm.

08 Oil Step Speed: Once the engine speed increases past this setpoint, the ECM will consider

the engine to be above the low idle condition in regard to low oil pressure shutdown and

alarm. Range is 400 to 1800 rpm in increments of 10 rpm.

09 Rated Oil Pressure Shutdown: If the engine lube pressure drops below the setpoint and

the engine speed has been above the oil step speed for 9 seconds, the ECM will enter a

low oil pressure shutdown condition. Range is 35 to 420 kPa (5 to 60 psi). Alarm signal

sent to annunciator module occurs at 35 kPa (5 psi) above the shutdown.

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SETPOINTS

10 Idle Oil Pressure Shutdown: If the engine lube pressure drops below this setpoint and the

engine has been running for more than 9 seconds, the ECM will enter a low oil pressure

shutdown condition. Range is 20 to 345 kPa (3 to 50 psi). The alarm signal sent to

annunciator module occurs at 35 kPa (5 psi) above the shutdown.

11 High Coolant Temperature Shutdown: If the engine coolant temperature has been past

the setpoint for 10 seconds. The ECM will enter a high coolant temperature shutdown

condition. Range is 95 to 12O“C (203 to 248’F). Alarm signal sent to annunciator

module occurs at 6% (11 OF) below the shutdown temperature.

12 Low Coolant Temperature Alarm: If the engine coolant temperature has been below this

setpoint for two seconds, the ECM will send an alarm signal to the annunciator module. Range

is 10 to 30°C (50 to 86’F). Factory set at 21°C (7O’°F).

13 Overcrank Time: Total time to start the engine (from when first asked to start until

overcrank is indicated). Range is 5 to 120 seconds. Factory setting is 90 seconds.

14 Cycle Crank: The amount of time the engine starter will crank. Also, the amount of time the

starter will rest during a cycle crank. Range is 1 to 60 seconds. Factory setting is 10 seconds.

15 Cooldown: The amount of time the engine will run after it has been told to stop during a

normal shutdown. Range is 0 to 30 minutes. Factory set at 15 minutes.

Figure

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