Mitsubishi Electric MELSEC-Q QD75M User Manual page 715

15 TROUBLESHOOTING
LED
Classifica
Error indicator
tion of
code of servo
errors
amplifier
2050 50
Servo
amplifier
errors
2051 51
2052 52
Error name
Load exceeded overload protection
characteristic of servo amplifier.
Overload 1
Load ratio 300%: 2.5s or more
Load ratio 200%: 100s or more
Machine collision or the like caused
max. output current to flow
Overload 2
successively for several seconds.
Servomotor locked: 1s or more
Droop pulse of the deviation counter
reached or exceeded setting value
Error excessive
(Initial value: 80kPLS) of the
parameter Pr.131 .
Description
15 - 52
MELSEC-Q
Cause
The current exceeded the
continuous output current of the
servo amplifier.
The servo system is unstable,
causing hunting.
Collision with the machine.
Servo motor miswiring servo
amplifier terminals U, V, W phase
do not mach motor terminals U, V,
W phase.
The motor encoder fault.
Collision with the machine.
Servo motor miswiring servo
amplifier terminals U, V, W phase
don't mach motor terminals U, V, W
phase.
The servo system is unstable,
causing hunting.
The motor encoder fault.
Acceleration/deceleration time
constant too small.