Troubleshooting - Mitsubishi Electric MELSERVO-J5 User Manual

Troubleshooting

If the power does not turn on or if the FAULT LED is on, take corrective actions according to the following table.
Event
The power does not
turn on.
The FAULT LED is on.
6 OPTIONS AND PERIPHERAL EQUIPMENT
272
6.17 MR-J3-D05 safety logic unit
Description
Even when the power is turned on,
the power supply 3-digit, 7-segment
LED does not light up.
The FAULT 3-digit, 7-segment LED
for A-axis or B-axis remains on and
does not turn off.
Cause
1. The 24 V DC power supply has
malfunctioned.
2. The wiring between the MR-J3-D05 and
the 24 V DC power supply is
disconnected or is in contact with other
wiring.
3. The MR-J3-D05 has malfunctioned.
1. Delay time setting mismatch
2. Switch input error
3. TOF signal error
4. The MR-J3-D05 has malfunctioned.
Action
Replace the 24 V DC power supply.
Check the wiring.
Replace the MR-J3-D05.
Check the settings of the rotary switches.
Check the input signal wiring or input signal
sequence.
Check the connection with the servo
amplifier.
Replace the MR-J3-D05.