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MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
Error
check
timing
Error
process-
ing
Check point Corrective action
Review operation program.
Take measures against noise.
— — — —
Change QD75MH.
Connect the connector of the
SSCNET
cable.
Wipe dirt at the surface away.
Change the SSCNET
cable.
— — — —
Take noise suppression measures
Change the servo amplifier.
Change the parameter value to
within the setting range.
— — — —
Change the servo amplifier.
Change the servo amplifier.
The drive method is reviewed.
Review environment so that ambient
temperature is 0 to 55°C.
— — — —
Change the servo amplifier.
Review environment so that ambient
temperature is 0 to 40°C.
• Reduce load.
• Review operation pattern.
• Use servomotor that provides
larger output.
— — — —
Change the servomotor.
Change the cooling fan of the servo
amplifier.
Remove the foreign matter.
— — — —
Always
Imme-
date
stop
Change servo amplifier.
:
The error check timing is shown below.
• When servo amplifier is power ON.
• When the QD75MH detects the rising edge (OFF
ON) of the PLC READY signal [Y0].
• When servo amplifier is reset.
• When the QD75MH is power ON.