Mitsubishi Electric MR-J2S-*B Series Instruction Manual page 136

9. TROUBLESHOOTING
Display Name
33 Overvoltage
34 CRC error
35 Command
frequency error
36 Transfer error
37 Parameter
error
45 Main circuit
device overheat
Definition
Converter bus 1. Regenerative brake option is not
voltage exceeded used.
400VDC.
2. Though the regenerative brake
option is used, the parameter No.
2 setting is "
3. Lead of built-in regenerative brake
resistor or regenerative brake
option is open or disconnected.
4. Regenerative transistor faulty.
5. Wire breakage of built-in
regenerative brake resistor or
regenerative brake option
6. Capacity of built-in regenerative
brake resistor or regenerative
brake option is insufficient.
7. Power supply voltage high.
8. Ground fault occurred in servo
amplifier output phases U, V and W.
Bus cable is faulty 1. Bus cable disconnected.
2. Bus cable fault
3. Noise entere bus cable.
4. Termination connector
disconnected.
5. The same No. exists in the servo
amplifier side axis setting.
Input frequency of 1. Command given is greater than
command pulse is the maximum speed of the servo
too high. motor.
2. Noise entered bus cable.
3. Servo system controller failure
Bus cable or printed 1. Bus cable is disconnected.
board is faulty
2. Bus cable fault.
3. Printed board is faulty.
4. Terimination connector
disconnected
Parameter setting is 1. Servo amplifier fault caused the
wrong. parameter setting to be rewritten.
2. There is a parameter whose value
was set to outside the setting
range by the controller.
3. The number of write times to EEP-
ROM exceeded 100,000 due to
parameter write, etc.
Main circuit device 1. Servo amplifier faulty.
overheat
2. The power supply was turned on
and off continuously by overloaded
status.
3. Air cooling fan of servo amplifier
stops.
Cause
Use the regenerative brake option.
Make correct setting.
00 (not used)".
1. Change lead.
2. Connect correctly.
Change servo amplifier
1. For wire breakage of built-in
2. For wire breakage of regenerative brake
Add regenerative brake option or increase
capacity.
Review the power supply.
Correct the wiring.
Connect correctly.
Change the cable.
Take measures against noise.
Connect termination connector.
Set correctly.
Review opration program.
Take action against noise.
Change the servo system controller.
Connect the connector of the bus cable.
Change the cable.
Change the servo amplifier
Connect termination connector.
Change the servo amplifier.
Change the parameter value to within the
setting range.
Change the servo amplifier.
Change the servo amplifier.
The drive method is reviewed.
1. Change the servo amplifier or cooling
2. Reduce ambient temperature.
9 - 5
Action
regenerative brake resistor, change
servo amplifier.
option, change regenerative brake
option.
fan.