Mitsubishi Electric QD75MH1 User Manual page 737

15 TROUBLESHOOTING
LED
Classifica
Error indicator
tion of
code
of servo
errors
amplifier
2052 52
Servo
amplifier
errors
2060 1A
2088 888
Error name
The deviation between the model
position and the actual servomotor
Error excessive
position exceeds "
value (initial value: 3 revolutions).
Motor
Wrong combination of the servo
combination
amplifier and servomotor.
error
Watchdog CPU, parts faulty
Description
"setting
Pr.164
15 - 48
MELSEC-Q
Cause
Acceleration/deceleration time
constant too small.
Torque limit value too small.
Start disabled due to insufficient
torque caused drop in power supply
voltage.
The setting value for " Pr.125
Model loop gain" too small.
Servomotor shaft was rotated by
external force.
Collision with the machine.
The motor encoder fault.
Servomotor miswiring servo
amplifier terminals U, V, W phase
don't mach motor terminals U, V, W
phase.
SSCNET cable fault.
Wrong combination of the servo
amplifier and servomotor
connected.
Fault of parts in servo amplifier.