Yaskawa GPD 506/P5 Section Three - Manual (Page 29)

PP.P5G5.03.Troubleshoot
Page 29
Rev. 06/11/2003
Both the forward and the reverse run commands are
input simultaneously for 500 ms or more. EF
External Fault
ef
Possible Cause(s): An external forward and reverse command are input simultaneously.
Corrective Action: Check external sequence logic.
ef0 External fault from serial communication.
Possible Cause(s): An external fault condition exists.
Corrective Action: Check for an external condition, verify the program parameters.
EF0
External Fault
Fault Codes
Minor Fault
- Operation continues and the digital operator indication blinks
The fault relay does not activate.
505 506
√
515
√