Trouble Which Does Not Trigger An Alarm/Warning; The Display Shows "A" (Unconnected To The Controller); The Display Shows "R; The Display Shows "Tst - Mitsubishi Electric MR-J5-G Series User Manual

1.4

Trouble which does not trigger an alarm/warning

This section shows examples of trouble which will not trigger an alarm or warning as well as the possible causes of such
trouble. Refer to this section and remove each cause of trouble.
Precautions
• When the servo amplifier, servo motor, controller, or encoder malfunctions, the cases shown in this section may occur.
• If the servo motor does not rotate, also check the "No Motor Rotation" area in MR Configurator2.

The display shows "A" (unconnected to the controller)

• The status of each axis is indicated in each digit.
1-axis servo amplifier: "A _ _"
2-axis servo amplifier: "AA _"
3-axis servo amplifier: "AAA"
Possible cause
1.
The power supply of the controller has been
turned off.
2.
The power supply of the device between the
controller and servo amplifier has been turned
off.
3.
The amplifier-less operation function of the
controller is enabled.
4.
An Ethernet cable was disconnected.
5.
An incompatible controller is connected.
6.
The settings of the rotary switch are incorrect.
7.
The communication cycle does not match.
8.
The axis has been disabled.

The display shows "r##"

Possible cause
1.
The system is in servo-off or ready-off state.
(## in the display indicates network
addresses.)

The display shows "TST"

Possible cause
1.
The test operation mode is enabled.
1 SERVO AMPLIFIER TROUBLESHOOTING
200
1.4 Trouble which does not trigger an alarm/warning
Check/action method
Switch on the power of the controller.
Turn on the power of the device between the controller and servo amplifier.
Cancel the amplifier-less operation function of the controller.
Replace the Ethernet cable.
Check if the connector (CN1A/CN1B) is disconnected.
Connect with a compatible controller.
Check if there is another servo amplifier assigned to the same axis No.
Refer to the controller instruction manual and check the communication cycle.
Turn off the disabling control axis switch.
Check/action method
Turn on the servo-on for all the axes.
Check/action method
Turn off the test operation select switch (SW3-1).
Refer to "Switch setting and display of the servo amplifier" in the User's
Manual (Introduction).
Model
[G]
[WG]
[WG]
Model
[G]
[WG]
Model
[G]
[WG]