Panasonic MINAS S Series Operating Manual page 91

Troubleshooting
The rotation is not smooth.
Category
Adjustment The gains are not appropriate.
Position commands are not stable. Check the behavior of the motor on the waveform
Wiring CN I/F signals are chattering.
1) Servo-ON signal
2) Counter clear input signal
3) Zero speed clamp input
Internal
selection
1, 2
Positioning accuracy is bad.
Category
System Position commands (amount of
command pulses) are not correct.
Causes
Increase the value of Pr11 (1st velocity loop gain).
Set a torque filter (Pr14) and then further increase the
value of Pr11.
graphic screen of PANATERM
check pin. Check the wiring and its connections.
Check the controller.
1) Check the wiring and connections between CN I/F
2) Check the wiring and connections between CN I/F
3) Check the wiring and connections between CN I/F
command speed
Causes
Count the number of feedback pulses on the monitor
screen of PANATERM
and forth within a fixed distance. If the number of
feedback pulses varies, adjust the controller. Take
measures to reduce the noise on the command pulse.
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Countermeasures
pins 2 and 13 by monitoring the display of input and
output signals status. Modify the wiring so that Servo-
ON signals can be made active correctly. Check the
controller.
pins 4 and 13 by monitoring the display of input and
output signals status. Modify the wiring so that the
position error counter clear input can be made active
correctly. Check the controller.
pins 5 and 13, 4 and 13, and 6 and 13 by monitoring
the display of input and output signals status. Modify
the wiring so that Zero Speed Clamp input can be
made active correctly. Check the controller.
Countermeasures
"
while repeating travel to back
"
using the CN MON