15 - 89
MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
Check point Corrective action
Input signal logic selection
31 181 331 481
• Review operation pattern.
• Install limit switches.
Change the servomotor.
— — — —
Connect correctly.
— — — —
• Change the slot of the drive unit whose load is
large.
• Reduce the load.
• Reexamine the operation pattern.
• Use a servomotor whose output is large.
Auto tuning
30108 30208 30308 30408
Servo response
30109 30209 30309 30409
• Repeat acceleration/deceleration to execute
"
Pr.108
Auto tuning".
• Change "
Pr.109
Servo response" setting.
• Set "
Pr.108
Auto tuning" to OFF and make gain
adjustment manually.
— — — —
Connect correctly.
— — — —
Remove the alarm causes of all drive units where
alarm has occurred.
Repair or change the cable.
Set the IFU parameter value correctly.
IFU parameter "
Pr.1
".
— — — —
Correct the protocol.
Repair or change the cable.
— — — —
Change the communication device (e.g. personal
computer).
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