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MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory
address
Axis 1 Axis 2 Axis 3 Axis 4
Servo
amplifier
status of
the warning
occurrence.
Check point Corrective action
Repair cable or battery changed.
— — — —
Change battery.
In-position range
30110 30310 30510 30710
Remove the cause of droop pulse occurrence.
Creep speed
76, 77
226,
227
376,
377
526,
527
Reduce creep speed.
— — — —
Change battery.
— — — —
Call the status display
and check regenerative
load ratio.
• Reduce frequency of positioning.
• Change regenerative brake option for the one with
larger capacity.
• Reduce load.
— — — —
Servo ON
continued
Refer to error code
(2050, 2051) (Refer to
Section 15.2.3)
Refer to error code (2050, 2051) (Refer to Section
15.2.3)
— — — —
Take noise suppression measures.
— — — —
• Servo ON
continued
• Home
position
request On
Change servomotor.
Refer to Section
5.2.7 to 5.2.10
Servo ON
continued
Set the parameter properly.
Forced stop input selection
30104 30304 30504 30704
Check for safety and release the forced stop.
Forced stop valid/invalid
selection
Check continuity status
of the external device
connection cable.
• Check for safety and release the forced stop.
• Repair cable or battery changed.
35 — — —
Servo OFF
Change QD75MH.
Change the cooling fan of the servo amplifier.
— — — —
Servo ON
continued
Change servo amplifier.