Mitsubishi Electric MR-JE-C, Instruction Manual

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8. HOW TO USE INDEXER
8 - 3
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
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.
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 Fault Investigation Possible cause Reference
1 Power on The 7-segment LED
display does not turn
on.
The 7-segment LED
on display blinks.
Not solved even if CN2, CN3, and
CN5 connectors are
disconnected. 1. Power supply voltage fault
2. The servo amplifier is
malfunctioning.
Solved when CN2 connector is
disconnected. 1. Power supply of encoder
cabling is shorted.
2. Encoder is malfunctioning.
Solved when CN3 connector is
disconnected. Power supply of the CN3 cabling is
shorted.
Solved when CN5 connector is
disconnected. Power supply of CN5 cabling is
shorted.
Alarm occurs. (Note)
2 Issue Enable
Operation
command Alarm occurs. (Note)
Servo motor shaft is not
servo-locked. (Servo
motor shaft is free.) 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. 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.
3 Perform a home
position return. Servo motor does not
rotate. Check the status of LSP (Forward
rotation stroke end) and LSN
(Reverse rotation stroke end). LSP and LSN are off.
Check [Pr. PA11 Forward rotation
torque limit] and [Pr. PA12
Reverse rotation torque limit]. Torque limit level is too low for the
load torque. Section
4.2.1
When TLA (Analog torque limit) is
usable, check the input voltage on
the MR Configurator2. Torque limit level is too low for the
load torque.
The home position
return is not completed. Check the ON/OFF status of SIG
(External limit/Rotation direction
decision/Automatic speed
selection). The proximity dog is not set
properly.
4 Switch on
"Controlword bit 4
(New set-point)". Servo motor does not
rotate. Check the status of LSP (Forward
rotation stroke end) and LSN
(Reverse rotation stroke end). LSP and LSN are off.
Check [Pr. PA11 Forward rotation
torque limit] and [Pr. PA12
Reverse rotation torque limit]. Torque limit level is too low for the
load torque. Section
4.2.1
When TLA (Analog torque limit) is
usable, check the input voltage on
the MR Configurator2. Torque limit level is too low for the
load torque.