Yaskawa VCD 723 - Manual (Page 77)

4 Troubleshooting/Maintenance
71 Troubleshooting Flowcharts
9/15/93
Chart 12. External Fault ( EF ) Indication
IS AN EXTERNAL FAULT SIGNAL
PRESENT (CLOSED CIRCUIT
BETWEEN TERMINAL 3 AND
11; OR OPEN CIRCUIT
BETWEEN TERMINAL 11
AND WHICHEVER TERMINAL
(5-8) HAS BEEN PROGRAMMED
FOR EXT. FAULT INPUT)?
YES
FAULT HAS OCCURRED
IN CIRCUITS OUTSIDE
THE DRIVE.
TROUBLESHOOT AND
CORRECT.
NO
CONTROL PCB IS
FAULTY. REPLACE.