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15 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
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: The error check timing is shown below.
• When servo amplifier is power ON.
• When the QD75MH detects the rising edge (OFF
• When servo amplifier is reset.
• When the QD75MH is power ON.
Error
Error
check
process-
timing
ing
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Imme-
Always
date
stop
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ON) of the PLC READY signal [Y0].
Check point
15 - 45
MELSEC-Q
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.
Change servo amplifier.
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