Omron CS1W-NC113 Manual page 288

Troubleshooting Tables
No. Problem
The motor is not
9
turning. i
10
11
12
13
14
15
16 Origin search
cannot be
executed.
17
18
19
20
21
22
23
24
278
Probable causes
The servo is not locked.
The wiring is incorrect
between the PCU and the
Servo Drive.
A run prohibit input, such as
POT or NOT, is ON for a
U-series Servo Drive (when
Cn-01 bits 2 and 3 are 0).
The Servo Drive is in the
internally set speed control
mode (and is not receiving
PCU speed referenced).
A Servo Drive alarm has
been generated.
The mechanical axis is
locked.
The PCU is defective.
An error or warning has been
generated.
The PCU's origin proximity
input is wired incorrectly.
The origin input signal is
incorrectly wired to the PCU.
The direction of rotation does
not match the direction of the
limit input.
The limit input is wired
incorrectly.
The positioning completed
signal does not turn ON.
The origin search proximity
speed is too fast.
The parameters are set
incorrectly.
The PCU is defective.
Items to check
Refer to 7 and 8.
Check the wiring with a tester.
Change the connecting cables.
Check the run prohibit inputs.
Check the Servo Drive setting.
Check the contents of the Servo
Drive alarm.
Check whether there is a
mechanical limit or lock in
effect.
---
Check the contents of the error
or warning.
Use the Teaching Box's input
signal monitor function to check
whether the sensors are turning
ON and OFF normally.
Check the wiring for the origin
input signal.
If axis rotation is reaching the
mechanical limit without
reversing direction, check
whether the limit inputs in the
operating memory area are
turning ON and OFF normally.
Check the limit input wiring.
Check that the Servo Drive's gain
is not set too low.
Check that the in-position width
of the Servo Drive is not too
small.
Check the origin search
proximity speed.
Check the CX-Position or DM
Area parameters.
If the single-direction mode is
specified for a system in which
limits are set for both sides, for
example, an error will occur and
operation will stop when a limit
is detected.
---
Section 11-1
Remedy
Refer to 7 and 8.
Correct the wiring.
Turn OFF the Servo
Drive run prohibit input.
Make the setting so that
the Servo Drive run
prohibit inputs will not be
used.
Correct the Servo Drive
setting.
If there is an alarm, then
follow the instructions.
Manually release the
mechanical lock.
Replace the PCU.
If there is an error or
warning, then follow the
instructions.
Correct the wiring.
Correct the wiring.
Correct the limit input
wiring.
Correct the limit input
wiring.
Increase the Servo
Drive's gain.
Increase the Servo
Drive's in-position width.
Decrease the origin
search proximity speed.
Set the parameters
correctly, transfer them
to the PCU, and write
them to flash memory.
Replace the PCU.