Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 51

3. SIGNALS AND WIRING
(2) Occurrence of each axis stop alarm
Main circuit
power
Control circuit
Base circuit
Dynamic brake
Servo-on command
A-axis
(from controller)
Alarm
Reset command
Base circuit
Dynamic brake
Servo-on command
B-axis
(from controller)
Alarm
Reset command
3.6.2 Supplementary information
(1) Overcurrent, overload 1 or overload 2
If operation is repeated by switching control circuit power off, then on to reset the overcurrent (32. ),
overload 1 (50. ) or overload 2 (51. ) alarm after its occurrence, without removing its cause, the servo
amplifier and servo motor may become faulty due to temperature rise. Securely remove the cause of the
alarm and also allow about 30 minutes for cooling before resuming operation.
(2) Regenerative alarm
If operation is repeated by switching control circuit power off, then on to reset the regenerative (30. ) alarm
after its occurrence, the regenerative resistor will generate heat, resulting in an accident.
(3) Instantaneous power failure
Undervoltage (10. ) occurs when the input power is in either of the following statuses.
Power failure of the control circuit power supply has continued for 60ms or longer, then the power
restores.
Bus voltage drops to 200VDC or less during the servo-on status.
ON
OFF
ON
Base circuit ON
OFF
ON
Brake operation
OFF
ON
Servo-on command
OFF
ON
No alarm Each axis stop alarm
OFF
ON
OFF
ON
Base circuit ON
OFF
ON
OFF
ON
Servo-on command
OFF
ON
No alarm
OFF
ON
OFF
1.5s
Fault cause
removed
Power on A-axis stop alarm
Power ON
Base circuit ON
No alarm
Reset operation
Brake operation
Each axis stop alarm
50ms or
Fault cause
more
removed
Alarm reset Alarm reset
B-axis stop alarm
3 - 18
Brake operation
Servo-on command
Occurrence of all axis stop alarm
Base circuit ON
Brake operation
Servo-on command
No alarm
Occurrence of all axis stop alarm
Reset operation
50ms or 60ms or
more more
Power shutoff Power on
Power ON
Base circuit ON
No alarm No alarm
Base circuit ON
No alarm