Actual Operation; Trouble At Start-Up - Mitsubishi MR-JE-10A Instruction Manual

4. STARTUP

4.3.5 Actual operation

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

4.3.6 Trouble at start-up

CAUTION
The following faults may occur at start-up. If any of such faults occurs, take the corresponding action.
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 Switch on ST1 Servo motor does not
(Forward rotation rotate.
start) or ST2
(Reverse rotation
start).
Never make a drastic adjustment or change to the parameter values as doing so
will make the operation unstable.
POINT
Using the optional MR Configurator2, you can refer to reason for rotation failure,
etc.
Fault
7-segment LED is Not improved even if CN1 and
not lit. CN2 connectors are
disconnected.
7-segment LED
flickers.
Improved when CN1 connector is
disconnected.
Improved when CN2 connector is
disconnected.
Refer to chapter 8 and remove cause.
Refer to chapter 8 and remove cause.
1. Check the display to see if the
servo amplifier is ready to
operate.
2. Check the external I/O signal
indication (section 4.5.7) to
see if SON (Servo-on) is on.
Call the status display (section
4.5.3) and check the input
voltage of VC (Analog speed
command).
Call the external I/O signal
display (section 4.5.7) and check
the on/off status of the input
signal.
Check the internal speed
commands 1 to 7 ([Pr. PC05] to
[Pr. PC11]).
Check the forward rotation
torque limit ([Pr. PA11]) and the
reverse rotation torque limit ([Pr.
PA12]).
When TLA (Analog torque limit)
is usable, check the input voltage
on the status display.
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.
1. SON (Servo-on) is not input.
(wiring mistake)
2. 24 V DC power is not supplied
to DICOM.
Analog speed command is 0 V.
LSP, LSN, ST1, and ST2 are off.
Set value is 0.
Torque limit level is too low as
compared to the load torque.
Torque limit level is too low as
compared to the load torque.
4 - 12
Possible cause Reference
Chapter 8
Chapter 8
Section
Section
Section
Section
Section
Section
4.5.7
4.5.3
4.5.7
5.2.3
5.2.1
4.5.3