[Al. 139_Open-Phase Error] - Mitsubishi Electric MR-J5-G Series User Manual

[AL. 139_Open-phase error]

• An open phase occurred in the main circuit power supply of the servo amplifier.
• An open phase occurred in the servo motor power line.
[AL. 139.1_Input open-phase error]
Cause
1.
An open phase occurred in the main circuit
power line of the servo amplifier.
2.
The main circuit power supply is distorted.
[AL. 139.2_Output open-phase error]
Cause
1.
An open phase occurred in the servo motor
power line.
2.
The winding inside the servo motor is
disconnected.
[AL. 139.3_Motor wiring error]
Cause
1.
The servo motor that has been connected with
the servo motor power line is not the servo
motor to be connected. The servo motor that
has been connected with the encoder cable is
not the servo motor to be connected.
2.
The winding inside the servo motor is
disconnected.
Check/action method
Check that the main circuit power line is connected with the servo amplifier.
Make sure that 1-phase AC power supply is not inputted to the servo amplifier
that cannot use 1-phase AC power supply.
Check if the main circuit power line of the servo amplifier is closed. If the main
circuit power line of the servo amplifier is open, replace the main circuit power
line.
Review the power-supply environment of the main circuit.
Check/action method
Check that the servo motor power line is connected with the servo amplifier.
Check that the servo motor power supply is connected with the servo amplifier.
Check if the servo motor power line is closed. If the servo motor power line is
open, replace the servo motor power line.
Replace the servo motor, then check the repeatability.
Check/action method
Check the servo motor to which the servo motor power line and encoder cable
are connected.
Check if the servo motor power line is closed. If the servo motor power line is
open, replace the servo motor power line.
Replace the servo motor, then check the repeatability.
1 SERVO AMPLIFIER TROUBLESHOOTING
1.3 Handling methods for alarms/warnings
1
Model
[A]
[G]
[WG]
Model
[A]
[G]
[WG]
Model
[WG]
125