YASKAWA SGLGW User Manual page 159

5 Trial Operation (Checking Linear Servomotor Operation)
5.5.3 Troubleshooting for Polarity Detection Errors
No. Problem
Polarity detection
3 uncompleted
(A.C52)
Out of range for
4 polarity detection
(A.C53)
Polarity detection
5
error 2 (A.C54)
5-22
Cause
<Analog Pulse
Model>
• Polarity
detection was not
yet complete.
• The /PDET
signal was not
input.
<M-II Model/M-III
Model/Command
Option Attachable
Type>
The servo has
been turned ON
under the
following
circumstances.
• An absolute
linear scale is
being used.
• The polarity
detection
selection for the
absolute linear
scale was set to
not execute.
(Pn587.0=0)
• Polarity was not
yet detected.
The movement
distance during
detection exceeds
the range set for
Pn48E.
An external force
was applied to the
linear servomotor.
www.dadehpardazan.ir 88594014-15
Countermeasure
Input the /PDET signal.
When using an absolute linear scale, set Pn587.0 to 1 to
execute polarity detection.
An alarm occurs when the motor movement distance
during detection becomes out of the range set for
Pn48E. If the command distance has not been changed
from the factory set value, the motor might have been
moved for some reason. Check for the cause and take a
proper measure.
Increase the value of the polarity detection confirmation
force reference (Pn495).
Increase the value of the polarity detection allowable
error range (Pn498). (Note that increasing the allowable
error will also increase the servomotor temperature.)
(cont'd)