Omron SYSMAC CS1G Operation Manual page 608

Troubleshooting
No. Problem
32 Motor rotation is The parameters are set
unstable. incorrectly.
33 The Servo Motor power
lines and encoder lines are
wired incorrectly.
34 There is eccentricity in the
couplings connecting the
Servomotor axis and the
mechanical system. There
may be loose screws or
load torque fluctuation due
to the meshing of pulley
gears.
35 The gain adjustment is
insufficient.
36 Motor rotation is The wrong Servomotor is
unstable. selected (so it cannot be
adjusted).
37 The Servomotor bearings
are damaged.
38 The Servomotor windings
are disconnected.
39 Rotation is The Servo Driver is set for
reversed. reverse rotation.
40 During an origin search:
The origin proximity sensor
polarity does not match the
parameter setting (in the
MC Unit) for the origin prox-
imity input polarity.
41 During an origin search:
The origin proximity input
wiring is faulty.
Probable causes
Check the MC Unit parameters
with the Support Tool.
Check the Servo Motor power
lines and encoder lines.
Check the machinery.
Try turning the motor with no
load (i.e., with the machinery
removed from the coupling).
Check the torque and inertia
ratio and select another Servo-
motor.
Turn OFF the Servo Driver
power. If the Servomotor has a
brake, turn ON the brake power
supply and release the brake,
and then manually turn the
motor's output shaft with the
motor's power line disconnected
(because the dynamic brake
may be applied).
With a tester, check resistance
between the Servomotor's U, V,
and W power lines. There
should be a proper balance
between the line resistances.
Check the System Parameter
setting using the Support Tool.
Check the parameter setting
and the sensor polarity.
With the Support Tool, check
whether the origin proximity
input status is correct.
Item to check
Set the parameters correctly,
transfer them to the MC Unit,
and write them to flash memory.
Correct the wiring.
Adjust the machinery.
• Execute Servomotor auto-tun-
ing.
• Manually adjust the Servomo-
tor gain.
• Adjust the servo parameters
with the Support Tool.
Change to a suitable Servomo-
tor.
Replace the Servomotor.
Replace the Servomotor.
Correct the setting for the direc-
tion of Servo Driver rotation.
Correct the parameter setting.
Correct the origin proximity
input wiring.
Section 11-1
Remedy
585