Zero Return Fault - Mitsubishi MELSEC-A A1SD71-S2 User Manual

8. TROUBLESHOOTING
. _
.
-
W S E G A
8.2.7
Zero return
fault
( 1 )
Partial zero return
Monitor zero return process with
peripheral device or AD71TU.
I
NO
Check zero return switch wiring
'
etc.
YES
I
Check the zero return method
selected in the parameters.
I
I
No
I
1
Check that zero return signal
switches on then off.
YES
4
c
c
System is OK timer times out.
1
1
Check pulse chain from AlSD71.
I
I
Check motor drive unit.
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