Mitsubishi A1SD75M3 User Manual page 650

14 TROUBLESHOOTING
Servo
Error
amplifier
code
LED display
2052 52 Error excessive
2086 8E RS-232 alarm
Name Definition
Droop pulse value of the
deviation counter
exceeded the
" Pr.131 Error excessive
alarm level" value (initial
value: 80kpulses).
Serial communication
error occurred between
servo amplifier and
telecommunication
equipment (personal
computer or similar
device).
1. Acceleration/deceleration time constant is small.
2. Torque limit value is small.
3. Motor cannot be started due to torque shortage caused by power
supply voltage drop.
4. " Pr.113 Position loop gain 1" value is small.
5. Servomotor shaft was rotated by external force.
6. Machine struck something.
7. Encoder faulty.
8. Wrong connection of servomotor.
Servo amplifier's output terminals U, V, W do not match
servomotor's input terminals U, V, W.
1. Communication cable faulty (open cable or short circuit).
2. Telecommunication equipment (personal computer or similar
device) faulty.
14 - 62
MELSEC-A
Occurrence factor