Electronic Modular Control Panel II (EMCP II) For PEEC Engines Caterpillar

Spare Inputs

The spare inputs are referred to as SP1, SP2, and SP3. The spare inputs are accessed on the auxiliary terminal strip (AUX) within the control panel on the left wall. The terminations at the auxiliary terminal strip for the spare inputs are marked.

SP1 is marked as "SW1".

SP2 is marked as "SW2".

SP3 is marked as "SW3".

The following tasks for each spare input are programmable: active input state, response taken and time delay. The GSC responds to the active state of an input, although the response can be delayed. Setpoints SP01 through SP06 and SP08 through SP10 are used for programming the spare inputs. Each of the setpoints is described in the following topics.

Illustration 1	g00308511
Typical Active High Input Configuration For Spare Input 1 (SP1)

Illustration 2	g00307940
Typical Active Low Input Configuration For Spare Input 1 (SP1)

The active input state must be programmed into the GSC. A high state is 5 DCV to B+. A low state is B-. When an input is programmed for an active high state a high state at the input is a spare fault. A low state at the input is a normal condition.

When an input is programmed for an active low state, a low state at the input is a spare fault. A high state at the input is a normal condition. Setpoints SP01, SP03 and SP05 are used for the programming of the active input state of the spare inputs.

Note: If an input is left floating, then the internal circuitry of the GSC pulls the input high. The GSC will respond accordingly.

The GSC response to an active spare fault must be programmed. One response option treats the condition as a shutdown fault. The other response option treats the condition as an alarm fault. Setpoints SP02, SP04, and SP06 are used for programming the response.

Note: Spare faults that are programmed to shutdown are ignored by the GSC when engine speed is less than crank termination speed.

The GSC must be programmed for the amount of time to delay the response to a spare fault (active input). After a spare fault occurs, the GSC does not respond until the time delay has elapsed. Indicators are not activated. Codes are not shown. The operation of the engine has not changed. Setpoints SP08, SP09, and SP10 are used for programming the time delay. The time delay is selectable from 0 to 250 seconds.

SP01 Spare Input 1 Active State - The value is 0 for an active low or the value is 1 for an active high. The default setting from the factory is 0.

SP02 Spare Input 1 Response - The value is 0 for a shutdown fault or the value is 1 for an alarm fault. The default setting from the factory is 0.

SP03 Spare Input 2 Active State - The value is 0 for an active low or the value is 1 for an active high. The default setting from the factory is 0.

SP04 Spare Input 2 Response - The value is 0 for a shutdown fault or the value is 1 for an alarm fault. The default setting from the factory is 0.

SP05 Spare Input 3 Active State. - The value is 0 for an active low or the value is 1 for an active high. The default setting from the factory is 0.

SP06 Spare Input 3 Response. - The value is 0 for a shutdown fault or the value is 1 for an alarm fault. The default setting from the factory is 0.

SP08 Spare Input 1 Delay Time - The value is selectable from 0 to 250 seconds in increments of 1 second. The default setting from the factory is 0 seconds.

SP09 Spare Input 2 Delay Time - The value is selectable from 0 to 250 seconds in increments of 1 second. The default setting from the factory is 0 seconds.

SP10 Spare Input 3 Delay Time - The value is selectable from 0 to 250 seconds in increments of one second. The default setting from the factory is 0 seconds.

Alarm Mode Sequence Of Operation - When a fault occurs in a spare input and the fault is programmed as an alarm fault, the GSC will respond in the following manner:

1. The GSC waits for the programmed time delay.

2. The fault alarm indicator FLASHES.

3. When the alarm codes key is pressed, the corresponding SP fault code is shown on the upper display of the GSC.

4. The engine continues to run or the engine is able to start.

Shutdown Mode Sequence Of Operation - When a fault occurs in a spare input and the fault is programmed as a shutdown fault, the GSC will respond in the following manner:

1. The GSC waits for the programmed time delay.

2. The fault shutdown indicator FLASHES.

3. The corresponding SP fault code of SP1, SP2, or SP3 is immediately shown on the upper display of the GSC.

4. The engine is shut down or the engine is disabled from starting.

The fault shutdown indicator remains FLASHING and the SP fault code remains shown until the ECS is turned to OFF/RESET. After you turn the ECS to OFF/RESET and after you correct the cause of the spare fault, the engine is able to start and the engine is able to run.

Note: SP fault codes are not logged into the GSC fault log.

Note: If the operator does not desire the use of the spare inputs, then program the spare inputs for a LOW active state and connect nothing to the spare input wiring.

Spare Output

Note: The spare output is usually used to give a high logic signal to a device for a customer or the spare output is used to give a low logic signal to a device for a customer. However, the spare output can be programmed to be a spare data output on the latest generator set controls. As a spare data output, the necessary serial data is available for operating the optional relay driver module (RDM). Earlier generator set controls such as the 103-6177113-4500117-6200120-6880123-6004136-3870 EMCP Electronic Controls do not have the serial data capability which is necessary for the RDM.

The spare output responds to a selected trigger condition. The response and the trigger condition are programmable. The spare output is accessed on the auxiliary terminal strip (AUX) within the control panel on the left wall. The spare output is marked as "SPARE" on the auxiliary terminal strip.

Illustration 3	g00307942
Typical Active Low Configuration For Spare Output

Illustration 4	g00308023
Typical Active High Configuration For Spare Output

The GSC must be programmed to make the active state of the spare output high or low. An active low state means that the output is pulled to the battery negative terminal when the output is active. The output draws approximately 100 mA when the output is in the low state. The output is floating at a high state when the GSC is programmed for an active high state. The voltage will measure approximately 5.0 DCV when no devices are connected to the spare output. When the spare output is in the high state, the spare output is floating. The spare output is also capable of driving the high impedance logic circuits only. When the spare output is in the high state, the spare output will not drive the low impedance loads such as relays. Setpoint SP07 is used for programming the active state of the spare output.

SP07 - Spare Output Active State. The default setting from the factory is 0.

0 - active low state

1 - active high state

The condition that activates the spare output must be programmed in the GSC. A large selection of trigger conditions are available to activate the spare output. Setpoint SP11 is used for programming the trigger condition.

SP11 -. The default setting from the factory is 7 (cooldown).

Note: The spare output activates the shunt trip coil of the AC circuit breaker during the engine cooldown.

Note: The GSC diagnoses a fault in the spare output circuit. See Testing and Adjusting, "Diagnostic Fault Codes".

Procedure For Spare Input/Output Programming

Note: Service mode cannot be entered when the ECS is in the AUTO position.

Note: Any active shutdown fault must be made inactive in order to access service mode. A FLASHING shutdown indicator means that a shutdown fault exists. To temporarily change a shutdown fault from an active shutdown fault to an inactive shutdown fault, turn the ECS to the OFF/RESET position. To permanently change a shutdown fault from an active shutdown fault to an inactive shutdown fault, the fault must not be occurring. Also, the ECS must be turned to the OFF/RESET position. If the jumper from terminal 6 to terminal 9 is not installed on the ECS, then the GSC will not power up in OFF/RESET and any active shutdown fault must be corrected before entering service mode.

1. Turn the ECS to the STOP position. This shuts down the engine. Enter service mode and enter the password. "OP 1" is showing on lower display. For more information, see the Procedure To Enter The Password in the System Operation, "Password Entry OP3".

2. Press "SCROLL UP" key five times. "OP 6" is showing on the lower display.

3. Press "SELECT" key. "SP01" is showing and "SP01" is followed with the value of the setpoint.

4. Press "SCROLL UP" or "SCROLL DOWN" key. The next setpoint with a corresponding value is showing. Repeat this step until the desired setpoint is showing.

5. Press "SELECT" key. The value of the setpoint is flashing.

6. Press the "SCROLL UP" or "SCROLL DOWN" key in order to adjust the value of the setpoint.

7. Press "ENTER" key. The value of the setpoint stops flashing. Repeat steps 4, 5, 6 and 7 until all the desired setpoints are adjusted.

8. Press "EXIT" key. "OP 1" is showing on the lower display.

9. Press "EXIT "key. The display returns to the normal mode.