Actual Operation; Troubleshooting At Start-Up - Mitsubishi Electric MR-JE-*C Instruction Manual

8. HOW TO USE INDEXER

8.1.2 Actual operation

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

8.1.3 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-_C" means "MR-JE-_C Servo Amplifier Instruction Manual".
No. Start-up sequence
1 Power on
Alarm occurs.
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)".
Never make a drastic adjustment or change to the parameter values as doing so
will make the 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 CN2, CN3, and
display does not turn CN5 connectors are
on. disconnected.
The 7-segment LED
Solved when CN2 connector is
on display blinks.
disconnected.
Solved when CN3 connector is
disconnected.
Solved when CN5 connector is
disconnected.
(Note)
(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
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
the MR Configurator2.
Check the ON/OFF status of SIG
(External limit/Rotation direction
decision/Automatic speed
selection).
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
the MR Configurator2.
Investigation
1. Power supply voltage fault
2. The servo amplifier is
malfunctioning.
1. Power supply of encoder
cabling is shorted.
2. Encoder is malfunctioning.
Power supply of the CN3 cabling is
shorted.
Power supply of CN5 cabling is
shorted.
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 not set
properly.
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.
8 - 3
Possible cause Reference
Section
Section
4.2.1
4.2.1