Omron NY532-1500 User Manual page 380
Ny-series ipc machine controller
industrial panel pc / industrial box pc
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Also See for NY532-1500:
- Reference manual (702 pages) ,
- Setup and user's manual (118 pages) ,
- Troubleshooting manual (778 pages)
Table of Contents
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11 Troubleshooting
Problem
Unstable motor rotation
Rotation direction is
reversed.
11-14
Cause
Incorrect wiring of Servo-
motor power line/encoder
line, missing phase, etc.
Load torque variation due
to gear meshing or not
tightening the coupling
eccentric screw connect-
ing the motor axis with the
mechanical system
Insufficient gain adjust-
ment
Incorrect Servomotor
selection (adjustment not
possible)
Damaged Servomotor
bearings
Broken Servomotor wind-
ing
The Servo Drive is set to
the opposite rotation direc-
tion.
(During homing)
The axis parameters that
set the polarity of the
home proximity sensor
and the polarity of the
home proximity input do
not match.
(During homing)
Incorrect wiring of the
home proximity input
NY-series Industrial Panel PC / Industrial Box PC Motion Control User's Manual (W559)
Item to check
Check the wiring of the
motor power line and
encoder line.
Check the machine. Turn
the coupling under a no-
load condition (with the
mechanical part after the
coupling removed).
---
Select another motor
(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. Then manu-
ally 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 between
phases U, V, and W of the
motor power line. If the
balance is off, there is a
problem.
Jog the machine. If the
rotation direction of the
Servo Drive is opposite
the jogging direction, the
rotation direction of the
Servo Drive is reversed.
Also check for reversed
feedback signals (phases
A and B) and reverse rota-
tion setting of the parame-
ter.
Check the axis parame-
ters and sensor polarity
again.
Check the axis input infor-
mation in the Axis Vari-
ables to see if the home
proximity input sensor
turns ON/OFF.
Countermeasure
Wire all connections cor-
rectly.
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.
Set the rotation direction
of the Servo Drive cor-
rectly.
Set the correct axis
parameters.
Wire the home proximity
input correctly.
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