Mitsubishi Electric MR-J2-03B5, Instruction Manual

Page: 77 / 113

8 - 4
8. TROUBLESHOOTING
Display Name Definition Cause Action
1. Short occurred in servo amplifier
output phases U, V and W.
Correct the wiring.
2. Transistor of the servo amplifier
faulty.
Checking method
Alarm (32) occurs if power is
switched on after CNP2
connector are disconnected.
Change the servo amplifier.
3. Ground fault occurred in servo
amplifier output phases U, V and
W.
Correct the wiring.
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.
Take noise suppression measures.
33 Overvoltage Input value of
converter bus
voltage 35VDC or
more. Power supply voltage is outside the
permissible voltage range. Change battery.
1. Bus cable disconnected. Connect correctly.
2. Bus cable fault Change the cable.
3. Noise entere bus cable. Take measures against noise.
4. Termination connector
disconnected.
Connect termination connector.
34 CRC error Bus cable is faulty
5. The same No. exists in the servo
amplifier side axis setting.
Set correctly.
1. Command given is greater than
the maximum speed of the servo
motor.
Review operation program.
2. Noise entered bus cable. Take action against noise.
35 Command
frequency error Input frequency of
command pulse is
too high.
3. Servo system controller failure Change the servo system controller.
1. Bus cable is disconnected. Connect the connector of the bus cable.
2. Bus cable fault. Change the cable.
3. Printed board is faulty. Change the servo amplifier
36 Transfer error Bus cable or printed
board is faulty
4. Terimination connector
disconnected
Connect termination connector.
1. Servo amplifier fault caused the
parameter setting to be rewritten.
Change the servo amplifier.
2. There is a parameter whose value
was set to outside the setting
range by the controller.
Change the parameter value to within the
setting range.
37 Parameter
error Parameter setting is
wrong.
3. The number of write times to EEP-
ROM exceeded 100,000 due to
parameter write, program write,
etc.
Change the servo amplifier.