Omron CS1W-NC113 Manual page 292

Troubleshooting Tables
No. Problem
There is slippage in
53
positioning.
54
55
56
57
58
59
60
61
62
63
64
65 Speeds drops (or
operation stops)
during continuous
operation
66 When memory
operation is
temporarily
stopped and then
restarted, it starts
from the beginning
again (not from
where operation
was temporarily
stopped)
282
Probable causes
The slippage is not constant.
Malfunction due to noise.
There was already slippage
in the position of the origin
before positioning was
performed.
The shield is not properly
grounded at the Servo Drive.
The PCU's output power
supply is not separated from
other power supplies.
The cable between the PCU
and the Servo Drive is too
long.
Twisted-pair cable is not
being used for the pulse
outputs.
The cable between the PCU
and the Servo Drive is not
separated from other power
lines.
There is malfunctioning due
to noise from a welding
machine, inverter, etc.
Output for operating
commands turns OFF during
operation.
There is slippage in the
mechanical system.
The minimum operating time
(10 ms min.) is not achieved.
When operation is restarted,
the Sequence Number
Enable Bit is ON at the point
when the START Bit is turned
ON.
Items to check
Is shielded cable being used?
Refer to 25 and 26.
Check the ground wiring.
Check whether the PCU's
output power supply is
separated from other power
supplies. pp
----
Check whether twisted-pair
cable is being used for the
pulse outputs.
Check whether the cable is
separated from other power
lines.
Check whether there is a device
such as a welding machine or
inverter nearby.
Check whether the Servo
Drive's operating command
output signals are turning OFF
during operation.
Check for slippage by marking
the mechanical connections.
Calculate the movement time by
dividing the amount of
movement by the speed to
check whether operation is
longer than the minimum
operating time.
Check the ladder program and
data trace.
Section 11-1
Remedy
Use shielded cable.
Refer to 25 and 26.
Correct the wiring.
Separate the PCU's
output power supply
from other power
supplies.
Install a noise filter at the
primary side of the
PCU's output power
supply.
Ground the PCU's
output power supply.
The maximum cable
length is two meters for
open collector output
models and five meters
for line driver output
models.
Use twisted-pair cable
for pulse outputs.
Separate the cable from
other power lines.
Separate the Unit from
the noise source.
Turn ON the operating
command output signals
with the correct timing.
Tighten the connections.
Add the minimum
operating time and other
factors, and adjust the
target distance and
speed so that the
movement time will be
greater than this total.
Change the ladder
program so that the
Sequence Number
Enable Bit is turned OFF
when the START Bit is
turned on to resume
operation.