12. WHEN USING WITH A GENERAL-PURPOSE INTERFACE
12 - 75
(4) 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
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 CN3 cabling is
shorted.
Solved when CN5 connector is
disconnected.
Power supply of CN5 cabling is
shorted.
Alarm occurs.
(Note)
2
SON (Servo-on) on Alarm occurs.
(Note)
Servo motor shaft is not
servo-locked. (Servo
motor shaft is free.)
Check SON (Servo-on) status.
1. SON (Servo-on) is not input.
(wiring mistake)
2. 24 V DC power is not supplied
to DICOM.
3
Perform a home
position return.
Servo motor does not
rotate.
Check the status of LSP (Forward
rotation stroke end), LSN (Reverse
rotation stroke end), and ST1
(Forward rotation start).
LSP, LSN, and ST1 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
MR Configurator2.
Torque limit level is too low for
the load torque.
The home position
return does not get
completed.
Check the ON/OFF status of SIG
(External limit/Rotation direction
decision/Automatic speed
selection).
The proximity dog is set
incorrectly.
4
Switch on ST1
(Forward rotation
start).
Servo motor does not
rotate.
Check the status of LSP (Forward
rotation stroke end), LSN (Reverse
rotation stroke end), and ST1
(Forward rotation start).
LSP, LSN, and ST1 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
MR Configurator2.
Torque limit level is too low for
the load torque.
Summary of Contents for MR-JE-C
Page 33: ...2 SIGNALS AND WIRING 2 16 MEMO ...
Page 37: ...3 STARTUP 3 4 MEMO ...
Page 129: ...6 HOMING MODE 6 36 MEMO ...
Page 169: ...7 HOW TO USE THE POINT TABLE 7 40 MEMO ...
Page 203: ...9 HOW TO USE JOG MODE 9 12 MEMO ...
Page 215: ...11 APPLICATION OF FUNCTIONS 11 8 MEMO ...
Page 307: ...12 WHEN USING WITH A GENERAL PURPOSE INTERFACE 12 92 MEMO ...
Page 309: ...MEMO ...