Mitsubishi Electric MELSEC-Q QD75M User Manual page 701

15 TROUBLESHOOTING
LED
Classifi-
Error indicator
cation of
code of servo
errors
amplifier
2031 31
2032 32
Servo
amplifier
errors
2033 33
2034 34
Error name
Overspeed Speed has exceeded the
instantaneous permissible speed.
Current that flew is higher than the
Overcurrent permissible current of the servo
amplifier.
Converter bus voltage exceeded
Overvoltage
400VDC.
CRC error SSCNET cable communication fault
Description
15 - 38
MELSEC-Q
Cause
Parameter Pr.103 to Pr.105
setting error.
Fault in the encoder.
Output U, V, W phases of the servo
amplifier were connected with each
other.
Transistor of the servo amplifier
damaged.
Short circuit in the servo amplifier
output U, V, W phases.
Noise entered the overcurrent
detection circuit.
Lead of built-in regenerative brake
resistor or regenerative brake option
is open or disconnected.
Though the regenerative brake
option is used, the DRU parameter
" Pr.102 Regenerative brake
resistor" setting value is "0 00 (not
used)".
Regenerative brake option is open
or disconnected.
Regenerative transistor faulty.
Wire breakage of built-in
regenerative brake resistor or
regenerative brake option.
Capacity of built-in regenerative
brake resistor or regenerative brake
option is insufficient.
Power supply voltage high.
The SSCNET cable is
disconnected.
Bus cable fault.
Noise has entered the bus cable.
The terminal connector is
disconnected.
The same No. exists in the servo
amplifier side axis setting.