8.
TROUBLESHOOTING
/MELSEC-A
8.2.6
Unrequested
stop
Check for a
stop
command from the
sequence program.
YES
c
Check PC software.
Disconnect stop signal cable.
r
D
Stop signal circuit fault.
Check for sources of noise
lea vrrelder. power supply).
c
AL
Potential noise interference?
AD71
cables etc.
Eliminate source of noise or screen
CYES
Positioning stops?
NO
Take appropriate measures to prevent
noise interference.
I
I
e
Check motor drive unit.
8-1 3
I0
iNAi €6101-A