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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
— — — —
Use the regenerative brake option.
— — — —
Set correctly.
— — — —
• Change lead.
• Connect correctly.
Change servo amplifier.
— — — —
• For wire breakage of built-in
regenerative brake resistor,
change servo amplifier.
• For wire breakage of regenerative
brake option, change regenerative
brake option.
Regenerative brake option
30102 30302 30502 30702
Add regenerative brake option or
increase capacity.
Review the power supply.
— — — —
Correct the wiring.
Connect the connector of the
SSCNET cable.
Wipe dirt at the surface away.
Change the cable.
Take noise suppression measures.
— — — —
Always
Imme-
date stop
Set correctly.
:
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.