14 - 71
MELSEC-A
14 TROUBLESHOOTING
Relevant buffer memory
address
Axis 1 Axis 2 Axis 3
Servo status at
warning occurrence
Checking method Remedy
Repair cable or change battery.
Servo ON continued
Change battery.
120 270 420 Servo ON continued
Remove the cause of droop pulse
occurrence.
Servo ON continued Change battery.
Servo ON continued
Call the status display and check
regenerative load ratio.
1. Reduce frequency of positioning.
2. Change regenerative brake option for
the one with larger capacity.
3. Reduce load.
Servo ON continued
Refer to overload 1 (error code: 2050)
or overload 2 (error code: 2051) in
section "14.2.2 Errors detected by MR-
H-B (MR-H-BN)".
Refer to overload 1 (error code: 2050) or
overload 2 (error code: 2051) in section
"14.2.2 Errors detected by MR-H-B (MR-H-
BN)".
Servo ON continued Set correctly.
Servo OFF
Ensure safety and deactivate emergency
stop.
SSCNET cable continuity check Repair or change the cable.
Change the servo amplifier.
Servo OFF
Change the AD75.
Servo OFF Switch ON main circuit power.