Mitsubishi Electric MELSEC-Q QD75M User Manual page 747

15 TROUBLESHOOTING
LED indicator
Classifica
of servo
Error
tion of
amplifier
code
errors
IFU
2037 —
2038
FA.38
2045
—
2046 —
Servo
amplifier
errors
2050 —
Error name
DRU
DRU
@A.37# parameter DRU parameter setting is wrong.
error
In some drive unit, the
DRU parameter which requires all
adjustment
— axes to be set for the same
error
value differs from those of the
other axes.
Main circuit
device Main circuit device overheat.
@A.45#
overheat
Servomotor Servo motor temperature rise
@A.46#
heated actuated the thermal protector.
Load exceeded overload
protection characteristic of drive
unit.
@A.50# Overload 1
Load ratio 300%: 1s or more
Load ratio 200%: 10s or more
Description
15 - 84
MELSEC-Q
Cause
Drive unit fault caused the DRU
parameter setting to be rewritten.
There is a DRU parameter whose
value was set to outside the setting
range by QD75M.
The number of write times to EEP-
ROM exceeded 100,000 due to
parameter write, etc.
There is a drive unit whose DRU
parameter Pr.102 or Pr.123
setting is different from others.
Air cooling fan of the drive unit
stops
The power supply was turned on
and off continuously by overloaded
status.
Drive unit faulty.
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
drive unit.
The servo system is unstable,
causing hunting.
Collision with the machine.
Servomotor miswiring drive unit
terminals U, V, W phase do not
mach motor terminals U, V, W
phase.
The motor encoder fault.