Omron CS1W-MC221 - 02-2008 Operation Manual page 557

Troubleshooting Tables
No. Problem
75 The MC Unit cannot
receive absolute
data (when an
absolute encoder is
used).
76 The absolute values
taken when the
servo is locked are
77
different from those
when the power is
turned OFF (when
an absolute
encoder is used).
78 The speed drops
(comes to a
temporary stop)
during pass
operations.
79 When the
G-language
program is paused
and then restarted,
it starts over from
the beginning
instead of
continuing from the
pause.
530
Probable causes
The Servo Driver's setup
parameters are not correct.
There is mechanical slippage. Check whether the motor turns
The MC Unit and Servo Driver
parameter settings are not
correct.
The minimum pass time is not
assured.
When the Cycle Start Bit is
turned ON at the restart, the
Program Number Read Bit is
being turned ON as well.
Items to check
---
while the power is OFF.
Check the MC Unit and Servo
Driver parameters.
Calculate the travel time by divid-
ing the travel distance by the
speed, and check whether the
minimum pass time is being sat-
isfied.
Check the ladder program or
perform a data trace.
Section 12-1
Remedy
Make the following
parameter settings.
With U-series Servo Driv-
ers, turn OFF Cn-01 bit 1,
turn ON Cn-01 bit E, and
turn OFF Cn-02 bit 1.
With W-series Servo
Drivers, set Pn002 digit
number 2 to 0.
With G-series Servo Driv-
ers, set Pn0B to 0 or 2.
---
With U-series Servo Driv-
ers, set Cn-02 bit 0 to 0.
With W-series Servo
Drivers, set Pn000 digit
number 0 to 0.
With G-series Servo Driv-
ers, set Pn46 and Pn51
to 0.
Set the MC Unit's
machine parameters to
forward with plus voltage
and forward with encoder
increase, or to reverse
with plus voltage and
reverse with encoder
increase.
Calculate the minimum
pass time plus the
operations in progress,
and adjust the target
distance and speed so
that the travel time will be
at least that much.
To resume program
execution from the point
where it was paused,
make sure the Program
Number Read Bit is OFF
when restarting the
program executing by
turning ON the Cycle
Start Bit.