Mitsubishi Electric MELSEC-Q QD75M User Manual page 711

15 TROUBLESHOOTING
LED
Classifi-
Error indicator
cation of
code of servo
errors
amplifier
2030 30
Servo
amplifier
errors
2031 31
2032 32
Error name
Permissible regenerative power of the
built-in regenerative brake resistor or
regenerative brake option is
exceeded.
Regenerative
error
Regenerative transistor fault
Speed has exceeded the
Overspeed
instantaneous permissible speed.
Current that flew is higher than the
Overcurrent permissible current of the servo
amplifier.
Description
15 - 48
MELSEC-Q
Cause
Parameter " Pr.102 Regenerative
brake resistor" setting value error.
Built-in regenerative brake resistor
or regenerative brake option is not
connected.
High-duty operation or continuous
regenerative operation caused the
permissible regenerative power of
the regenerative brake option to be
exceeded.
Power supply voltage is abnormal.
MR-J2-B: 260VAC or more
MR-J2-B1: 135VAC or more
Regenerative brake option faulty.
Regenerative transistor faulty.
Built-in regenerative brake resistor
or regenerative brake option faulty.
Small acceleration/deceleration
time constant caused overshoot to
be large.
Servo system is instable to cause
overshoot.
Fault in the encoder.
Output phases U, V, W phase of the
servo amplifier were connected with
each other.
Transistor of the servo amplifier
damaged.
Short circuit in the servo amplifier
out put phase U, V, W phase.
Noise entered the overcurrent
detection circuit.