Mitsubishi Electric MELSERVO-J4 Instruction Manual page 26

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Alarm No.: 10 Name: Undervoltage
Alarm content
Detail
Detail name
No.
10.2 Voltage drop in (7) The servo amplifier is
the main circuit
power
(8) For the drive unit, the
The voltage of the control circuit power supply has dropped.
The voltage of the main circuit power supply has dropped.
Cause
Check the bus
malfunctioning. voltage value.
Replace the converter
converter unit is unit, and then check
malfunctioning. the repeatability.
Check method Check result
The bus voltage is
less than the
prescribed value
although the voltage
of the main circuit
power supply is
within specifications.
200 V class: 200 V
DC
400 V class: 380 V
DC
100 V class: 158 V
DC
48 V DC setting:
24 V DC setting:
It is not repeatable.
1 - 19
Action
Replace the servo
amplifier.
35 V DC
15 V DC
Replace the
converter unit.
Target
[A]
[B]
[WB]
[RJ010]