Mitsubishi Electric MELSERVO MR-J3 A Series, Инструкция по эксплуатации

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4. STARTUP
4.4.6 Trouble at start-up
CAUTION
Excessive adjustment or change of parameter setting must not be made as it will
make operation instable.
POINT
Using the optional servo configuration software, you can refer to unrotated servo
motor reasons, etc.
The following faults may occur at start-up. If any of such faults occurs, take the corresponding action.
No. Start-up sequence Fault Investigation Possible cause Reference
Not improved if connectors
CN1, CN2 and CN3 are
disconnected. 1. Power supply voltage fault
2. Servo amplifier is faulty.
Improved when connectors
CN1 is disconnected. Power supply of CN1 cabling is
shorted.
Improved when connector
CN2 is disconnected. 1. Power supply of encoder
cabling is shorted.
2. Encoder is faulty.
LED is not lit.
LED flickers.
Improved when connector
CN3 is disconnected. Power supply of CN3 cabling is
shorted.
1 Power on
Alarm occurs. Refer to chapter 9 and remove cause. Chapter 9
Alarm occurs. Refer to chapter 9 and remove cause. Chapter 9 2 Switch on servo-on
(SON).
Servo motor shaft is
free. Call the external I/O signal
display (section 6.7) and
check the ON/OFF status of
the input signal. 1. Servo-on (SON) is not input.
(Wiring mistake)
2. External 24VDC power is not
supplied to DICOM.
Section 6.7
Call the status display
(section 6.3) and check the
analog torque command (TC). Analog torque command is 0V. Section 6.3
Call the external I/O signal
display (section 6.7) and
check the ON/OFF status of
the input signal. RS1 or RS2 is off. Section 6.7
Check the internal speed
limits 1 to 7
(parameters No. PC05 to
PC11). Set value is 0. Section 5.3
Check the analog torque
command maximum output
(parameter No. 26) value. Torque command level is too
low as compared to the load
torque.
3 Switch on forward
rotation start (RS1) or
reverse rotation start
(RS2).
Servo motor does not
rotate.
Check the internal torque limit
1 (parameter No. PC13). Set value is 0. Section
5.1.11