Omron NJ501-1300, Руководство пользователя

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11-55
11 Troubleshooting
NJ-series CPU Unit Motion Control User’s Manual (W507)
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11-2
-3 Error Ca
uses and R
emedies
Homing cannot be per-
formed. Error Check the nature of the
error. If there is an error, follow
troubleshooting proce-
dures for it.
Incorrect wiring of the
home proximity input. Check the axis input infor-
mation in the Axis Vari-
ables to see if the home
proximity input sensor
turns ON/OFF. Wire all connections cor-
rectly.
Incorrect wiring of the
home input. Check the wiring of the
home input. Wire all connections cor-
rectly.
The rotation direction and
limit input direction are
inconsistent. If the axis moves to the
mechanical limit without
reversing at the limit,
check the axis input infor-
mation in the Axis Vari-
ables to see if the limit
input turns ON and OFF. Wire the limit inputs cor-
rectly.
Incorrect wiring of the limit
input Check the wiring of the
limit inputs. Wire all connections cor-
rectly.
InPosWaiting does not
change to FALSE
Check to see if the Servo
Drive gain is too low.
Check to see if the in-posi-
tion range is too narrow. Increase the Servo Drive
gain.
Increase the in-position
range.
Homing approach velocity
is too high. Check the homing
approach velocity. Lower the homing
approach velocity of the
MC Function Module.
Axis parameters are not
set correctly. Check the axis parame-
ters in the Sysmac Studio. After setting the axis
parameters correctly,
download them to the MC
Function Module.
CPU Unit failure --- Replace the CPU Unit.
The position of home
defined with homing
changes occasionally. Loose mechanical parts,
such as couplings Use a marker pen to mark
the motor shafts, cou-
plings, and other mechani-
cal connections to check
for shifting. Securely tighten the con-
nections that shifted.
Insufficient leeway for Z
phase
Insufficient leeway for
home input signal
If the value is close to the
setting per Servomotor
rotation (number of pulses
per encoder rotation) or
near zero, the home may
be shifted by one motor
rotation due to slight
changes in the timing of
reading the sensor input.
Remove the motor cou-
pling and shift the position
by around one-quarter of a
turn so that the Z phase
pulse occurs at around
one half of a Servomotor
rotation (number of pulses
per encoder rotation), and
then perform homing
again.
Problem Cause Item to check Countermeasure