Mitsubishi Electric MR-JE-*C Instruction Manual page 134

7. HOW TO USE THE POINT TABLE
No. Start-up sequence
2 Issue Enable Alarm occurs.
Operation
Servo motor shaft is not
command
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.
4 Switch on Servo motor does not
"Controlword bit 4 rotate.
(New set-point)".
5 Gain adjustment Rotation ripples (speed
fluctuations) are large
at low speed.
Large load inertia
moment causes the
servo motor shaft to
oscillate side to side.
Note. Refer to "MELSERVO-JE Servo Amplifier Instruction Manual (Troubleshooting)" for details of alarms and warnings.
Fault Investigation
(Note)
When on CC-Link IE Field
Network Basic, check the status
of RX (n + 3) F (Cyclic
communication ready).
When on the other
communication, check the data in
which the servo amplifier
responds.
Check the status of LSP (Forward
rotation stroke end) and LSN
(Reverse rotation stroke end).
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
MR Configurator2.
Check the on/off status of DOG
(Proximity dog).
Check the status of LSP (Forward
rotation stroke end) and LSN
(Reverse rotation stroke end).
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
MR Configurator2.
Make gain adjustment in the
following procedure.
1. Increase the auto tuning
response level.
2. Repeat acceleration and
deceleration several times to
complete auto tuning.
If the servo motor can be run
safely, repeat acceleration and
deceleration three times or more
to complete auto tuning.
7 - 5
Possible cause
When on CC-Link IE Field Network
Basic, RX (n + 3) F is not turned
on.
When on the other communication,
the data sent to the servo amplifier
has an error.
LSP and LSN 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.
LSP and LSN are off.
Torque limit level is too low for the
load torque.
Torque limit level is too low for the
load torque.
Gain adjustment fault
Gain adjustment fault
Reference
Section
4.2.1
Section
4.2.1
MR-JE-_C
Chapter 6
MR-JE-_C
Chapter 6