8. TROUBLESHOOTING
8 - 5
Alarm No.10
Name: Undervoltage
Stop method: All axes stop
Alarm description
Voltage of the control circuit power has dropped.
Voltage of the main circuit power has dropped.
Display Name
Cause
Checkpoint
Finding
Action
10.1
(1)
Check the connector of
the control circuit power.
Disconnected or
poorly connected.
Connect properly.
Voltage drop in
the control circuit
power
Connector for the control
circuit power is
disconnected or poorly
connected.
No problem found.
Check (2).
(2) Voltage of control circuit
power is low.
160VAC or less.
Increase the voltage in
the control circuit
power.
Check if the control circuit
power voltage is 160VAC
or less.
Over 160VAC.
Check (3).
(3)
Instantaneous
control
circuit power failure of
60ms or longer.
Check the power supply
for a problem.
Problem found.
Check the power
supply.
10.2 (1)
Disconnected.
Connect
properly.
Voltage drop in
the main circuit
power
Connector for the main
circuit power is
disconnected.
Check the connector of
the main circuit power.
No problem found.
Check (2).
(2) Voltage of main circuit
power is low.
160VAC or less.
Increase the voltage in
the main circuit power.
Check if the main circuit
power voltage is 160VAC
or less.
Over 160VAC.
Check (3) and (4).
(3) Voltage drops during
acceleration.
Check if the bus voltage
is 200VDC or more
during acceleration.
Below 200VDC.
Set acceleration time
longer or increase the
power supply
capacity.
(4) Servo amplifier is faulty.
Check the bus voltage
using MR Configurator.
The main circuit power
supply voltage is
160VAC, but the bus
voltage measured
using MR Configurator
is less than 200VDC.
Replace the servo
amplifier.
Summary of Contents for MELSERVO-J3W Series
Page 17: ...8 MEMO ...
Page 27: ...1 FUNCTIONS AND CONFIGURATION 1 10 MEMO ...
Page 87: ...4 STARTUP 4 14 MEMO ...
Page 117: ...5 PARAMETERS 5 30 MEMO ...
Page 129: ...6 GENERAL GAIN ADJUSTMENT 6 12 MEMO ...
Page 185: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 241: ...11 OPTIONS AND AUXILIARY EQUIPMENT 11 56 MEMO ...
Page 274: ...13 USING A LINEAR SERVO MOTOR 13 25 1 2 3 4 ...