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15. MR-E- AG-QW003 SERVO AMPLIFIER COMPATIBLE WITH ANALOG INPUT
(2) Torque control mode
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 (Note)
Alarm occurs. Refer to section 10.2 and remove cause. Section 10.2
Alarm occurs. Refer to section 10.2 and remove cause. Section 10.2 2 Switch on servo-on
(SON).
Servo motor shaft is
free.
Call the external I/O signal
display and check the ON/OFF
status of the input signal.
1. Servo-on (SON) is not input.
(Wiring mistake)
2. 24VDC power is not supplied
to COM.
Section 6.6
Call the status display and
check the analog torque
command (TC).
Analog torque command is 0V. Section 6.2
Call the external I/O signal
display and check the ON/OFF
status of the input signal.
RS1 or RS2 is off. Section 6.6
Check the internal speed limits
1 to 7
(parameters No.8 to 10
72 to
75).
Set value is 0.
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.28).
Set value is 0.
Section
5.1.2 (1)
Note. Switch power on again after making sure that the change lamp has turned off completely.
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