CJ1W-NC234 Omron, CJ1W-NC234 Datasheet - Page 516

• Manufacturer Part Number: CJ1W-NC234
• Description: High Speed Pulse Train 2 Axes
• Manufacturer: Omron

Specifications of CJ1W-NC234

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

12
12-1 Troubleshooting
12-7
No.
46
47
48
49
50
51
52
53
54
55
56
57
58
59
Motor shaft
shakes.
Position shift
Problem
Insufficient adjustment
of the gain (low gain)
Gain cannot be
adjusted due to low
machine rigidity.
Mechanical
configuration prone to
stick slip (highly sticky
static friction)
Wrong motor selection
(adjustment not
possible)
Failure
Unstable shift amount
Malfunction due to
noise
The origin position
was already shifted
before positioning.
The shield is not
grounded at a single
point on the Servo
Drive side.
The output power
supply for the PCU is
not isolated from other
power supplies.
Cable between the
PCU and driver is
long.
Twisted-pair cable is
not used for pulse
output.
Cable between the
PCU and driver not
isolated from other
power lines.
Probable cause
CJ Position Control Units OPERATION MANUAL (CJ1W-NC214/234/414/434)
(In particular, this
condition occurs on
vertical axes, SCARA
robots, palletizers and
other systems whose
axis receives bending or
tensional loads.)
Select an appropriate
motor (check the torque
and inertia ratio).
Refer to No. 25 and 26.
Check the ground
wiring.
Check if the output
power supply for the
PCU is isolated from
other power supplies.
Check if a twisted-pair
cable is used for pulse
output.
Check if the cable
between the PCU and
driver is isolated from
other power lines.
Item to check
−
−
−
−
−
Perform auto-tuning.
Manually adjust (raise)
the gain.
Increase the machine
rigidity.
Readjust the gain.
Perform auto-tuning.
Manually adjust the
gain.
Change to an optimal
motor.
Replace the driver.
Replace the motor.
Use a shielded cable.
Refer to No. 25 and 26.
Wire correctly.
Isolate the output power
supply for the PCU from
other power supplies.
Provide a noise filter on
the primary side of the
output power supply for
the PCU.
Ground the output
power supply for the
PCU.
Keep the cable within 3
m for the open-collector
output type and within
10 m for the line-driver
output type.
Use a twisted-pair cable
for pulse output.
Isolate the cable
between the PCU and
driver from other power
lines.
Countermeasure
Confirm