Mitsubishi MELSEC-A series - Page 149

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