Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 449

15. MR-J3W-0303BN6 SERVO AMPLIFIER
15.6 Troubleshooting
Alarm No.: 10 Name: Undervoltage
Alarm content
Display Detail name
10.1 Voltage drop in 1) The control circuit power
the control
circuit power
2) The voltage of the control
3) An instantaneous power
10.2 Voltage drop in 1) The main circuit power
the main circuit
power
2) The voltage of the main
3) The alarm has occurred
POINT
This section explains troubleshooting only for MR-J3W-0303BN6. For the
troubleshooting other than MR-J3W-0303BN6, refer to chapter 8.
The voltage of the control circuit power supply has dropped.
The voltage of the main circuit power supply has dropped.
Cause
supply connector was
disconnected. Loose
connection
circuit power supply is low.
failure has occurred for
longer than 15ms.
supply connector was
disconnected.
circuit power supply is low.
during acceleration.
Stop system: All axes
Check method
Check the control circuit The connector was
power supply connector. disconnected or
connected loosely.
It has no problem.
Check if the voltage of It is lower than
the control circuit power 17VDC.
supply is lower than
17VDC.
The voltage is over
17VDC.
Check if the power has It has a problem.
a problem.
Check the main circuit It is disconnected.
power supply connector. It has no problem.
Check if the voltage of The voltage of the
the main circuit power main circuit power
supply is 35VDC or supply is 35VDC or
lower when 48VDC is lower when 48VDC
set for the main circuit is set for the main
power supply, or 15VDC circuit power supply,
or lower when 24VDC is or 15VDC or lower
set for the main circuit when 24VDC is set
power supply. for the main circuit
power supply.
It is over 35VDC
when 48VDC is set
or over 15VDC when
24VDC is set.
The bus voltage is The voltage is
35VDC or higher when 35VDC or lower
48VDC is set for the when 48VDC is set
main circuit power for the main circuit
supply, or 15VDC or power supply, or
higher when 24VDC is 15VDC or lower
set for the main circuit when 24VDC is set
power supply. for the main circuit
power supply.
15 - 44
Check result
Connect it correctly.
Check 2).
Increase the voltage of the
control circuit power
supply.
Check 3).
Review the power.
Connect it correctly.
Check 2).
Increase the voltage of the
main circuit power supply.
Check 3) and 4).
Increase the acceleration
time constant. Or increase
the power supply capacity.
Action