Instruction manual

9. TROUBLESHOOTING
9.1.3
Torque control mode
Start-up Sequence
Power on
Switch on servo-on
signal.
Switch on forward
rotation
start (RS1)
or reverse rotation
start (RS2).
Fault
Possible Cause
Investigation
. LED is not lit. I Not improved if connectors I 1. Power supply voltage fault
. LED flickers. 2. Servo amplifier is faulty. CN1.4, CNlB and CNP2 are
disconnected.
Improved when connectors
Improved when connector
disconnected.
shorted. CNlA and CNlB are
Power supply
of CN1 cabling is
cabling is shorted. CNP2 is disconnected.
1. Power supply of encoder
2. Encoder is faulty.
Alarm occurs.
Refer
to Section 9.2 and remove cause.
Alarm occurs.
Refer
to Section 9.2 and remove cause.
Servo motor shaft is
to operate.
(is free).
the servo amplifier is ready not servo-locked
Check the display
to see if
Servo motor does
check the analog torque
not rotate.
Call the status display and
command.
Call the external
I/O signal
display and check the
ONlOFF status of the input
signal.
Check the internal speed
limits
1 to 3
(parameters No. 8 to 10).
Check the internal torque
limit
1 (parameter No. 28).
1. Servo on signal is not input.
(Wiring mistake)
2. 24\3C power is not
supplied
to COM.
Analog torque command is OV.
RS1 or RS2 is off
Set value is 0.
Set value is 0.
\
Refer To
Section 9.2
Section 9.2
Section
6.3
Section 6.2
Sectlon 6.6
(1)s
Section 5.1.2
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