Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 387

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