GE SPM Series Instruction Manual

Also see for SPM: Instruction manual

Contents

GE SPM Series Instruction Manual Manual pdf 78 page image

7- 4SPM Synchronous Motor Protection & Control GE Power Management7.2 DISPLAY AND MESSAGES 7 TESTING AND TROUBLESHOOTING7• RUN-TIME FAULT: The CPU has calculated a series of values within a set time limit that are out of their validranges. Power must be cycled to the unit to correct this error.• ROM FAILURE: A PROM checksum error occurred during self-test. Consult GE Power Management to cor-rect this problem.• NOVRAM FAILURE: After the SPM writes data to its non-volatile memory (E2 PROM), the CPU immediatelyreads back the last value and compares it to what should have been written. If the two values are notequal, the SPM displays this message. This generally indicates a problem with the CPU Board. The SPMshould be replaced.• RAM FAILURE: A RAM checksum error occurred during self-test. This error is sometimes cleared by cyclingpower through the unit. Otherwise, consult GE Power Management.• FPGA FAILURE: The Field Programmable Gate Array has failed to configure during self-test. Power can becycled to the unit in an attempt to clear this error. Otherwise, consult the GE Power Management.• CHECK MX & TRP CIRCUIT: The motor is in a tripped state. Either the MX contacts are still open and the TRIPrelay is de-energized, or the TRIP relay is energized but the internal circuitry to sense this has failed.• MX or TRP FAILURE: The MX circuit or the TRIP relay circuit has failed.• COMM CARD FAILURE: The communications card has failed or was not present during power up or SYSTEMTEST. A periodic display of this error occurs only if a communication card test was passed during power-upand subsequently fails during normal operation. Only for units with the communications option.• WDT CKT FAILURE: The watchdog timer circuit has failed during self-test.• INCOMPLETE SETUP: The internal configuration information (not user selectable) has been lost and the unitwill not function. The SPM must be returned to GE Power Management for correction of this problem.• CALIBRATION REQD: The SPM has lost the calibration information stored in its non-volatile memory. The unitmust be returned to GE Power Management for correction of this problem.• FORCED WDT TRIP: The TRIP relay has been told to de-energize but is still showing as energized. In thiscondition, the CPU forces a watchdog timer trip in an attempt to de-energize the TRIP relay.• See Users Manual: Consult the user manual for correction.Press any key to clear a trip messages such as PWR FACTOR TRIP! or SQL CAGE TRIP!.DO NOT DEFEAT THE MOTOR RESTART PROTECTION PROVIDED BY THE SPM BY SWITCH-ING THE CONTROL POWER ON AND OFF. THE ABOVE ACTION RESETS THE STALL TIMECOUNTERS WHICH DEFEATS MOTOR PROTECTION FROM FREQUENT RESTARTS.NOTECAUTION