Mitsubishi A1SD75M3 User Manual page 640

14 TROUBLESHOOTING
Servo
Error
amplifier
code
LED display
Regenerative
2030 30
error
2031 31 Overspeed
2032 32 Overcurrent
2033 33 Overvoltage
2034 34 CRC error
Command pulse
2035 35
frequency alarm
Name Definition
Permissible regenerative
power of the built-in
regenerative brake
resistor or regenerative
brake option is
exceeded.
Regenerative transistor
fault
Speed has exceeded the
instantaneous
permissible speed.
Current that flew is
higher than the
permissible current of
the servo amplifier.
Input value of converter
bus voltage exceeded
400V.
SSCNET cable
communication error
Input command
frequency is too high.
1. " Pr.102 Regenerative brake resistor" setting error
2. Built-in regenerative brake resistor or regenerative brake option is
not connected.
3. High-duty operation or continuous regenerative operation caused
the permissible regenerative power of the regenerative brake
option to be exceeded.
4. Power supply voltage is abnormal.
MR-J2S- B: 260V or more
MR-J2S- B1: 135V or more
5. Regenerative transistor faulty.
6. Built-in regenerative brake resistor or regenerative brake option
faulty.
1. Small acceleration/deceleration time constant caused overshoot
to be large.
2. Servo system is instable to cause overshoot.
3. Encoder faulty.
1. Short occurred in servo amplifier output phases U, V and W.
2. Servo amplifier transistor faulty.
3. Ground fault occurred in servo amplifier output phases U, V and
W.
4. External noise caused the overcurrent detection circuit to
misoperate.
1. Lead of built-in regenerative brake resistor or regenerative brake
option is open or disconnected.
2. Regenerative transistor faulty.
3. Wire breakage of built-in regenerative brake resistor or
regenerative brake option
4. Capacity of built-in regenerative brake resistor or regenerative
brake option is insufficient.
5. Power supply voltage high.
1. SSCNET cable is disconnected.
2. SSCNET cable fault.
3. Noise entered the SSCNET cable.
4. The terminal connector is disconnected.
5. The same No. exists in the servo amplifier side axis setting.
1. Command of higher than servomotor maximum speed was given.
2. Noise entered the SSCNET cable.
3. AD75 faulty
14 - 52
MELSEC-A
Occurrence factor