RAW WATER PUMP GROUP 6L4754 - Caterpillar

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 OutputThe 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 state1 - active high stateThe 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).
Table 1
SP11 Spare Output Trigger Conditions    
1     For an active SP1 fault code that is an alarm fault.    
2     For an active SP2 fault code that is an alarm fault.    
3     For an active SP3 fault code that is an alarm fault.    
4     Any active SP1, SP2 or SP3 fault code that is an alarm fault.    
5     Any active AL fault code (AL1, AL2 or AL3) or diagnostic fault code (CID FMI) that is an alarm fault.    
6     Any active alarm fault (SP1, SP2, SP3, AL1, AL2, AL3 or CID FMI)    
7     Activate during cooldown time    
8     Activate during a coolant loss alarm or shutdown condition