Actual Operation; Troubleshooting At Start-Up - Mitsubishi MR-JE-200A Instruction Manual

5. HOW TO USE THE PROGRAM

5.1.5 Actual operation

Start actual operation after confirmation of normal operation by test operation and completion of the
corresponding parameter settings.

5.1.6 Troubleshooting at start-up

CAUTION
The following faults may occur at start-up. If any of such faults occurs, take the corresponding action.
"MR-JE-_A" means "MR-JE-_A Servo Amplifier Instruction Manual".
No. Start-up sequence
1 Power on
Alarm occurs.
2 Switch on SON Alarm occurs.
(Servo-on).
Servo motor shaft is
not servo-locked.
(Servo motor shaft is
free.)
3 Perform a home Servo motor does not
position return. rotate.
The home position
return is not
completed.
Never adjust or change the parameter values extremely as it will make operation
unstable.
POINT
Using MR Configurator2, you can refer to the reason for rotation failure, etc.
Fault
The 7-segment LED Not solved even if CN1, CN2,
display does not turn and CN3 connectors are
on. disconnected.
The 7-segment LED
display blinks.
Solved when CN1 connector is
disconnected.
Solved when CN2 connector is
disconnected.
Solved when CN3 connector is
disconnected.
Refer to chapter 8 and remove the cause.
Refer to chapter 8 and remove the cause.
1. Check the display to see if
the servo amplifier is ready to
operate.
2. Check the external I/O signal
indication (section 3.1.7) to
see if SON (Servo-on) is on.
Check the on/off status of the
input signal with the external I/O
signal display. (Refer to section
3.1.7.)
Check [Pr. PA11 Forward rotation
torque limit] and [Pr. PA12
Reverse rotation torque limit].
When TLA (Analog torque limit) is
usable, check the input voltage
on the status display.
Check the on/off status of input
signal DOG with the external I/O
signal display. (Refer to section
3.1.7.)
Investigation
1. Power supply voltage fault
2. The servo amplifier is
malfunctioning.
Power supply of CN1 cabling is
shorted.
1. Power supply of encoder
cabling is shorted.
2. Encoder is malfunctioning.
Power supply of CN3 cabling is
shorted.
1. SON (Servo-on) is not input.
(wiring mistake)
2. 24 V DC power is not supplied
to DICOM.
LSP, LSN, and ST1 are off.
Torque limit level is too low for the
load torque.
Torque limit level is too low for the
load torque.
The proximity dog is set
incorrectly.
5 - 5
Possible cause Reference
Chapter 8
Chapter 8
Section
Section
Section
Section
Section
(Note)
(Note)
3.1.7
3.1.7
7.2.1
3.1.2
3.1.7