ROLLER GP-CARR 4492274 - Caterpillar

The load sharing circuitry in the EMCP 4 allow for automatic sharing of the load between multiple generator sets.There are fault messages that will be displayed if a problem exists with load sharing input circuit faults. Fault messages are generated when the wiring has a fault. The fault messages are also generated when the load is unsuccessfully transferred between the generator and the rest of the output side of the breaker.Table 1 is a list of the load sharing input circuit fault messages.
Table 1
Load Sharing Input Circuit Fault Messages
"REAL LOAD SHARING LINE SHORT TO HIGH SOURCE"
"REAL LOAD SHARING LINE SHORT TO LOW REF"
"REACTIVE LOAD SHARING LINE SHORT TO HIGH SOURCE"
"REACTIVE LOAD SHARING LINE SHORT TO LOW REF"
"UTILITY TO GEN TRANSFER FAILURE SHUTDOWN"
"UTILITY TO GEN TRANSFER FAILURE "
"GEN TO UTILITY TRANSFER FAILURE " Test Step 1. CHECK THE LOAD SHARING WIRINGVerify that the load sharing wiring is according to the proper wiring diagram.Expected Result:The load sharing wiring is according to the proper wiring diagram.Results:
OK - The load sharing wiring is according to the proper wiring diagram. Proceed to Test Step 2.
NOT OK - The load sharing wiring is not wired according to the proper wiring diagram.Repair: Repair the wiring. Try to load share again.STOPTest Step 2. CHECK THE LOAD SHARING SETPOINTSVerify that the load sharing set points for the generator set are correct for that specific application.Expected Result:The load sharing set points are correct for the generator set for the specific application.Results:
OK - The load sharing set points are correct for the generator set for the specific application. Proceed to Test Step 3.
NOT OK - The load sharing set points are not correct for the generator set for the specific application.Repair: Reprogram the set points. Try to load share again.STOPTest Step 3. CHECK THE LOAD SHARING GAINSVerify that the load sharing gains are correct for the generator set for the specific application.Expected Result:The load sharing gains are correct for the generator set for the specific application.Results:
OK - The load sharing gains are correct for the generator set for the specific application.STOP
NOT OK - The load sharing gains are not correct for the generator set for the specific application.Repair: Reprogram the gains. Try to load share again.STOP