Mitsubishi A1SD75M1, User Manual

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14 - 28
MELSEC-A
14 TROUBLESHOOTING
Error
code
Servo
amplifier
LED display
Name Definition Occurrence factor
1. Wrong setting of " Pr.102 Regenerative brake resistor"
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.
Permissible regenerative
power of the built-in
regenerative brake
resistor or regenerative
brake option is
exceeded.
4. Power supply voltage is abnormal.
260V or more
5. Regenerative transistor faulty.
Regenerative transistor
fault
6. Built-in regenerative brake resistor or regenerative brake option
faulty.
2030 30
Regenerative
error
Cooling fan stop 7. Unusual overheat due to cooling fan stop.
1. Input command pulse frequency exceeded the permissible
instantaneous speed frequency.
2. Small acceleration/deceleration time constant caused overshoot
to be large.
3. Servo system is instable to cause overshoot.
4. " Pr.103 Motor type" or " Pr.105 Motor speed" setting error
2031 31 Overspeed
Speed has exceeded the
instantaneous
permissible speed.
5. Encoder faulty.
1. Short occurred in servo amplifier output phases U, V and W.
2. Transistor (IPM) of the servo amplifier faulty.
3. Ground fault occurred in servo amplifier output phases U, V and
W.
2032 32 Overcurrent
Current that flew is
higher than the
permissible current of
the servo amplifier.
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.
2033 33 Overvoltage
Servo amplifier bus
voltage exceeded 400V.
5. Power supply voltage high.