Mitsubishi A1SD75M3 User Manual page 628

14 TROUBLESHOOTING
Servo
Error
amplifier
code
LED display
Error excessive
2052 52 Droop pulse value of the deviation counter
exceeded 80kpulses.
Name and definition
1. Acceleration/deceleration time constant is too small.
2. Start disabled due to torque shortage.
3. Servo gain (PG1) setting too low.
4. Bus voltage in the unit low.
5. Servomotor rotated one turn by external force.
6. Machine struck something.
7. Encoder faulty.
14 - 40
MELSEC-A
Occurrence factor