Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

Page: 387 / 500

14. USING A DIRECT DRIVE MOTOR
14 - 54
Alarm No.: 50 Name: Overload 1 Stop system: Each axis
Alarm content Load exceeded overload protection characteristic of servo amplifier.
Display Detail name Cause Check method Check result Action
50.1 Thermal
overload error 1
during
operation
50.2 Thermal
overload error 2
during
operation
50.3 Thermal
overload error 4
during
operation
50.4 Thermal
overload error 1
during a stop
50.5 Thermal
overload error 2
during a stop
50.6 Thermal
overload error 4
during a stop
Same as for the rotary servo motors.
Refer to section 8.3.
Alarm No.: 51 Name: Overload 2 Stop system: Each axis
Alarm content Maximum output current flowed for several seconds continuously due to machine collision or the like.
Display Detail name Cause Check method Check result Action
51.1 Thermal
overload error 3
during
operation
51.2 Thermal
overload error 3
during a stop
Same as for the rotary servo motors.
Refer to section 8.3.
Alarm No.: 52 Name: Error excessive Stop system: Each axis
Alarm content
The droop pulses existing between the model position and the actual servo motor position reached the alarm
level.
Display Detail name Cause Check method Check result Action
52.3 Excess droop
pulses
52.4 Error excessive
during 0 torque
limit
Same as for the rotary servo motors.
Refer to section 8.3.
Alarm No.: 8A Name: USB communication time-out error Stop system: All axes
Alarm content
Communication between the servo amplifier and a communication device (PC, etc.) stopped for the specified
time or longer.
Display Detail name Cause Check method Check result Action
8A.1 USB
communication
time-out error
Same as for the rotary servo motors.
Refer to section 8.3.