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MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
Check point Corrective action
Motor type
30102 30202 30302 30402
Motor capacity
30103 30203 30303 30403
Motor rotation speed
30104 30204 30304 30404
Set correctly ( "
Pr.103
" to "
Pr.105
" ).
— — — —
Change servomotor.
— — — —
Correct the U, V, W phase wiring of the servo
amplifier.
— — — —
Alarm (A.32) occurs if power is
switched on after disconnection
of the U, V, W phase power
cables.
Change the servo amplifier.
Correct the U, V, W phase wiring of the servo
amplifier.
— — — —
Take noise suppression measures.
— — — —
• Change lead.
• Connect correctly.
Regenerative brake option
30102 30202 30302 30402
Set correctly.
• Change lead.
• Connect correctly.
Change the servo amplifier.
• For wire breakage of built-in regenerative brake
resistor, change the servo amplifier.
• For wire breakage of regenerative brake option,
change regenerative brake option.
Add regenerative brake option or increase
capacity.
— — — —
Review the power supply.
Connect correctly.
Change the SSCNET cable.
Take measures against noise.
Connect terminal connector.
— — — —
Set correctly.