DISC-THRUST 7T3145 - Caterpillar

Illustration 1 g00631565
System Schematic For kW Level OutputThe kW level output will be activated whenever the total power output of the generator exceed the setpoint P139. The kW level output is the connector contact "34" of the GSC+. This setpoint can be programmed from 0 to 110 percent of the nameplate power (setpoint P030). This setpoint can be programmed with a time delay from 0 to 120 seconds (setpoint P140). See System Operation, "Engine/Generator Programming OP5-0". Also, see System Operation, "Service Mode". Once the output is activated, the kW level output will be deactivated when the total power output of the generator drops below a programmed setpoint (setpoint P141). This setpoint is different from the activation setpoint. This setpoint can be programmed from 0 to 110 percent of the nameplate power rating of the generator. This setpoint can be programmed with a time delay from 0 to 120 seconds.When kW relay is disconnected from the GSC+, the voltage on the kW level output is approximately 5.0 DCV. When kW relay is connected to the GSC+, the voltage on the kW level output is approximately 0 volts. The kW level output is capable of drawing (sinking) approximately 100 mA. Documenting and troubleshooting any connections to this output is the responsibility of the customers and the dealers. The possible cause of a CID 859 FMI 3 is a short to battery positive ("B+"). The source of battery positiveis the kW level output signal.The GSC+ treats a CID 859 FMI 3 fault as an alarm fault.The troubleshooting of a kW level output fault is straight forward. The FMI 3 defines the fault as a short to "B+". Use the following information in order to find the exact cause of the fault.
FMI information
kW level output system schematic
customer's documentation
dealer's documentation