CJ1W-NC414 Omron, CJ1W-NC414 Datasheet - Page 513

• Manufacturer Part Number: CJ1W-NC414
• Description: High Speed Pulse Train 4 Axes
• Manufacturer: Omron

Specifications of CJ1W-NC414

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

CJ Position Control Units OPERATION MANUAL (CJ1W-NC214/234/414/434)
No.
23
24
25
26
27
28
29
30
Origin-
searched
origin shifts
occasionally.
Origin-
searched
origin shifts
occasionally.
(Continued)
Unstable
motor
rotation
Problem
Loose mechanical
parts such as
couplings
No allowance for
phase Z
No allowance for
origin input signal
Wrong wiring of
Servomotor power line
and encoder line,
missing phase, etc.
Misalignment of the
coupling that connects
the motor shaft and
mechanical system
Untightened screw
Fluctuation of load
torque due to pulley
and gear meshing
Insufficient gain
adjustment
Wrong Servomotor
selection (adjustment
not possible)
Damaged Servomotor
bearing
Broken Servomotor
winding
Probable cause
Use a marker pen to
mark the motor shafts,
couplings and other
mechanical
connections, to check
for shifting.
If the value is close to
the setting per
Servomotor rotation
(number of pulses per
encoder rotation) or
near zero, a position
shift that corresponds to
1 motor rotation occurs
during Origin Search
due to slight change in
the sensor load timing.
Check the wiring of the
motor power line and
encoder line.
Check the machine.
Turn the coupling under
no-load (with the
mechanical parts after
the coupling removed).
Select a motor again
(check the torque and
inertia ratio).
Turn OFF the Servo
Drive power supply, and
also turn ON the brake
power supply and
release the brake if the
motor comes with a
brake, and then
manually turn the motor
output shaft with the
motor power line
disconnected (because
the dynamic brake may
be applied).
Use a tester to check the
resistance among U, V
and W of the motor
power line.
If the balance is off,
there is a problem.
Item to check
−
Securely tighten the
connections that shifted.
Remove the motor
coupling and shift the
position by around one-
quarter of a turn so that
the pulses of phase Z
allowance become
around one half of a
Servomotor rotation
(number of pulses per
encoder rotation), and
then perform Origin
Search again.
Wire correctly.
Review and adjust the
machine.
Perform auto-tuning of
the Servomotor.
Manually adjust the
Servomotor gain.
Change to an optimal
motor.
Replace the
Servomotor.
Replace the
Servomotor.
Countermeasure
12-1 Troubleshooting
Confirm
12-4
12