Yaskawa GPD503 Drive - Manual (Page 123)

TROUBLESHOOTING CHART 7.9
CONTROL FUNCTION ERROR ( CPF ) FAULT INDICATION
1. CHECK THAT ALL GPD 503
HARNESS CONNECTORS
ARE FIRMLY SEATED.
2. CHECK THAT CPU AND
EPROM ARE INSERTED
SECURELY.
3. CHECK THAT NO NOISE
SOURCE IS PRESENT.
4. REPROGRAM Sn-03 USING
FACTORY RESET CODES.
OBSERVE CAUTION
ON PAGE iv.
5. CHECK Sn-01 AND Sn-02
FOR PROPER VALUES.
TURN OFF POWER. AFTER
"CHARGE" LAMP ON MAIN
PCB GOES OUT,
TURN POWER BACK ON.
IS CPF STILL
INDICATED?
IS CPF STILL
INDICATED?
YES
YES
NO
NO
SELF-DIAGNOSIS FUNCTION
HAS DETECTED FAILURE IN
THE CPU OR PERIPHERAL
COMPONENTS.
REPLACE THE CONTROL PCB
AND/OR OPTION BOARD.
GPD 503 IS OK.
RETURN TO NORMAL
OPERATION.
7-11