Omron CS1W-MCH71 Operation Manual page 677

Troubleshooting
No. Problem
42 The positioning The in-position range set in
completed sig- the MC Unit parameters is
nal is not output too narrow, and the axis is
or is delayed. not in the in-position range.
(The next opera- (If it is not in the in-position
tion cannot be range, the next operation
started.) cannot be started because
the preceding operation is
not completed.)
43 The Servo Driver gain is
too low.
44 The axis is not in the in-
position range due to exter-
nal pressure applied when
positioning is stopped.
45 There are The machinery is vibrating. Check for foreign objects in the
unusual noises.
46 The speed loop gain is
insufficient. (The gain is too
high.)
47 The wrong Servomotor is
selected (so it cannot be
adjusted).
48 There is eccentricity in the
couplings connecting the
Servomotor axis and the
mechanical system.
49 Vibration is Inductive noise is being
occurring at the generated.
same frequency
as the applica-
tion frequency.
50 The control signals are not
properly grounded.
632
Probable causes
With the Support Tool, monitor
the error counter and check
whether the axis is in the in-
position range.
machinery's moving parts, and
inspect for damage, deforma-
tion, and looseness.
Check the torque and inertia
ratio and select another Servo-
motor.
• Check whether the Servo
Driver control signal lines are
too long.
• Check whether the control sig-
nal lines and power lines are
bundled together.
• Check whether the control sig-
nal shield is properly grounded
at the Servo Driver.
• Check whether the control sig-
nal lines are in contact with the
ground.
Item to check
Increase the in-position range
set in the MC Unit parameters.
Adjust the Servo Driver gain
and increase the MC Unit posi-
tion loop gain.
If positioning is stopped outside
of the in-position range due to
external pressure (occurs in
pressing application, etc.),
Increase the in-position range in
the Motion program.
Make any necessary repairs.
Perform auto-tuning.
Manually adjust (decrease) the
gain.
Change to a suitable Servomo-
tor.
Adjust the mounting of the Ser-
vomotor and machinery.
• Shorten the control signal
lines.
• Separate the control signal
lines and the power lines.
• Use a low-impedance power
supply for the control signal
lines.
Correct the wiring.
Section 11-1
Remedy