The Display Shows "Off; The Display Is Off; The Servo Motor Does Not Operate - Mitsubishi Electric MR-J5-G Series User Manual

The display shows "off"

Possible cause
1.
The operation mode for manufacturer setting
is enabled.

The display is off

Possible cause
1.
The external I/O terminal has shorted.
2.
The power has not been supplied to the
control circuit.
3.
The voltage of the control circuit power supply
has dropped.

The servo motor does not operate

Possible cause
1.
The connection of the servo motor is incorrect.
2.
A servo motor power cable or an encoder
cable is connected to an incorrect axis.
3.
An alarm or warning is occurring.
4.
The system is in the test operation mode.
[A]: The point in the lower right of the display is blinking.
[G] [WG]: Test operation select switch (SW3-1) has been turned
on (up) (The motor-less operation has been enabled).
5.
The torque is insufficient for the large load.
6.
An unintended torque limit has been enabled.
7.
The setting value for the torque limit is
incorrect.
8.
The machine is interfering with the servo
motor.
9.
For a servo motor with an electromagnetic
brake, the brake has not been released.
10.
LSP (Forward rotation stroke end) and LSN
(Reverse rotation stroke end) are not on.
11.
A software position limit is reached.
12.
The servo-on has not been turned on.
13.
The settings of the electronic gear are
incorrect.
Check/action method
Do not turn on all the DIP switches (SW3). Set SW3 correctly.
Refer to "Switch setting and display of the servo amplifier" in the User's
Manual (Introduction).
Cycle the power.
Check/action method
If disconnecting the following connectors solves the trouble, the cable wiring
may have shorted. Review the wiring.
[A]: CN1, CN2, CN2L, CN3
[G]: CN2, CN2L, CN3
[WG]: CN2A, CN2B, CN2C, CN3
Turn on the control circuit power supply.
Increase the voltage of the control circuit power supply.
Check/action method
Check the U/V/W wiring.
Refer to "Example power circuit connections" in the following manual.
MR-J5 User's Manual (Hardware)
Check if the encoder cable and the servo motor power cable are connected to
the same axis.
Check the contents of the alarm or warning, and remove its cause.
Cancel the test operation mode.
Disable the motor-less operation.
[A]: [Pr. PC60.0 Motor-less operation selection]
[G] [WG]: [Pr. PC05.0 Motor-less operation selection]
Check the instantaneous torque on the status display ([A]) or with MR
Configurator2. If the torque reaches the maximum torque or the torque limit
value, reduce the load or replace the servo motor with a larger-capacity servo
motor.
Cancel the torque limit.
Check if the torque limit value is "0".
Refer to "Torque limit" in the following manual.
MR-J5 User's Manual (Function)
Remove the interference.
Turn on the electromagnetic brake power.
Check if [AL. 099 Stroke limit warning] is occurring.
Turn on LSP and LSN.
Check if [AL. 098 Software position limit warning] has occurred.
Place the moving part in the range of the software position limit.
Turn on the servo-on.
Set appropriate values for the electronic gear.
1 SERVO AMPLIFIER TROUBLESHOOTING
1.4 Trouble which does not trigger an alarm/warning
1
Model
[G]
[WG]
[A]
Model
[A]
[G]
[WG]
Model
[A]
[G]
[WG]
201