Mitsubishi Electric MELSEC-Q QD75M User Manual page 725

15 TROUBLESHOOTING
LED
Classifica
Error indicator
tion of
code of servo
errors
amplifier
2045 45
2046 46
2050 50
Servo
amplifier
errors
2051 51
Error name
Main circuit
device over Main circuit device overheat
heated
Servomotor Servo motor temperature rise
heated actuated the thermal protector.
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
successively for several seconds.
Servomotor locked:
Overload 2
During rotation:
Description
1s or more
2.5s or more
15 - 62
MELSEC-Q
Cause
Air cooling fan of servo amplifier
stops.
Power on/off repeated in overload
state.
Servo amplifier abnormal
Servo motor ambient temperature
exceeded the operating value of
40°C.
Servomotor overloaded.
Thermal protector in encoder is
faulty.
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.