Mitsubishi Electric MELSERVO-J2-Super Series Instruction Manual page 279

12. TROUBLESHOOTING
Display Name
AL.33 Overvoltage Converter bus
voltage exceeded
400VDC.
AL.37 Parameter Parameter setting is
error wrong.
AL.45 Main circuit Main circuit device
device overheat overheat
AL.46 Servo motor Servo motor
overheat temperature rise
actuated the
thermal protector.
Definition
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. Servo amplifier fault caused the
parameter setting to be rewritten.
2. Regenerative brake option not used
with servo amplifier was selected in
parameter No.0.
3. Value outside setting range has
been set in some parameter.
4. Value outside setting range has
been set in electronic gear.
5. Opposite sign has been set in
software limit increasing side
(parameters No. 46, 47). Similarly,
opposite sign has been set in
software limit decreasing side
(parameters No. 48, 49).
6. Opposite sign has been set in
position range output address
increasing side (parameters No. 50,
51). Similarly, opposite sign has
been set in position range output
address decreasing side
(parameters No. 52, 53).
7. The number of write times to EEP-
ROM exceeded 100,000 due to
parameter write, etc.
1. Servo amplifier faulty.
2. The power supply was turned on
and off continuously by overloaded
status.
3. Air cooling fan of servo amplifier
stops.
1. Ambient temperature of servo
motor is over 40 .
2. Servo motor is overloaded.
3. Thermal protector in encoder is
faulty.
Cause
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.
Change the servo amplifier.
Set parameter No.0 correctly.
Set the parameter correctly.
Set parameters No. 4, 5 correctly.
Set parameters No. 46 to 49 correctly.
Set parameters No. 50 to 53 correctly.
Change the servo amplifier.
Change the servo amplifier.
The drive method is reviewed.
1. Exchange the cooling fan or the servo
2. Reduce ambient temperature.
Review environment so that ambient
temperature is 0 to 40 .
1. Reduce load.
2. Review operation pattern.
3. Use servo motor that provides larger
Change servo motor.
12 - 8
Action
regenerative brake resistor, change
servo amplifier.
option, change regenerative brake
option.
amplifier.
output.