11 - 7
11. TROUBLESHOOTING
Display Name
Definition
Cause
Action
1. Regenerative option is not used.
Use the regenerative option.
2. Though the regenerative option is
used, the parameter No.PA02
setting is " 00 (not used)".
Set correctly.
3. Lead of built-in regenerative resistor
or regenerative option is open or
disconnected.
1. Change lead.
2. Connect correctly.
4. Regenerative transistor faulty.
Change servo amplifier
5. Wire breakage of built-in
regenerative resistor or regenerative
option.
1. For wire breakage of built-in regenerative
resistor, change servo amplifier.
2. For wire breakage of regenerative option,
change regenerative option.
6. Capacity of built-in regenerative
resistor or regenerative option is
insufficient.
Add regenerative option or increase
capacity.
7. Power supply voltage high.
Review the power supply.
A33
Overvoltage
The following shows
the input value of
converter bus
voltage.
MR-J3- T(1)
8. Ground fault occurred in servo
motor power (U, V, W).
Correct the wiring.
1. Pulse frequency of the manual pulse
generator is too high.
Change the pulse frequency to a proper
value.
2. Noise entered the pulses of the
manual pulse generator.
Take action against noise.
A35 Command
pulse
frequency error
Input pulse frequency
of the command
pulse is too high.
3. Manual pulse generator failure.
Change the manual pulse generator.
1. Servo amplifier fault caused the
parameter setting to be rewritten.
Change the servo amplifier.
2. Regenerative option not used with
servo amplifier was selected in
parameter No.PA02.
Set parameter No.PA02 correctly.
A37
Parameter error Parameter setting is
wrong.
3. The number of write times to EEP-
ROM exceeded 100,000 due to
parameter write, etc.
Change the servo amplifier.
1. Servo amplifier faulty.
Change the servo amplifier.
2. The power supply was turned on
and off continuously by overloaded
status.
The drive method is reviewed.
3. Ambient temperature of servo motor
is over 55 .
Review environment so that ambient
temperature is 0 to 55 .
A45 Main
circuit
device overheat
Main circuit device
overheat.
4. Used beyond the specifications of
close mounting.
Use within the range of specifications.
1. Ambient temperature of servo motor
is over 40 .
Review environment so that ambient
temperature is 0 to 40 .
2. Servo motor is overloaded.
1. Reduce load.
2. Review operation pattern.
3. Use servo motor that provides larger
output.
A46 Servo
motor
overheat
Servo motor
temperature rise
actuated the thermal
sensor.
3. Thermal sensor in encoder is faulty. Change servo motor.
Cooling fan life expiration (Refer to
section 2.5.)
Change the cooling fan of the servo
amplifier.
Foreign matter caught in the fan
stopped rotation.
Remove the foreign matter.
A47 Cooling
fan
alarm
The cooling fan of
the servo amplifier
stopped, or its speed
decreased to or
below the alarm
level.
The power supply of the cooling fan
failed.
Change servo amplifier.
Summary of Contents for MELSERVO MR-J3-xT
Page 22: ...8 MEMO ...
Page 156: ...4 46 4 SIGNALS AND WIRING MEMO ...
Page 276: ...7 26 7 MR Configurator MEMO ...
Page 324: ...10 16 10 SPECIAL ADJUSTMENT FUNCTIONS MEMO ...
Page 418: ...14 66 14 OPTIONS AND AUXILIARY EQUIPMENT MEMO ...