Omron NY532-1500 User Manual page 379

Problem
Homing cannot be per-
formed.
The position of home
defined with homing
changes occasionally.
NY-series Industrial Panel PC / Industrial Box PC Motion Control User's Manual (W559)
Cause
Error
Incorrect wiring of the
home proximity input.
Incorrect wiring of the
home input.
The rotation direction and
limit input direction are
inconsistent.
Incorrect wiring of the limit
input
InPosWaiting does not
change to FALSE
Homing approach velocity
is too high.
Axis parameters are not
set correctly.
Industrial PC failure
Loose mechanical parts,
such as couplings
Insufficient leeway for Z
phase
Insufficient leeway for
home input signal
11 Troubleshooting
Item to check
Check the nature of the
error.
Check the axis input infor-
mation in the Axis Vari-
ables to see if the home
proximity input sensor
turns ON/OFF.
Check the wiring of the
home input.
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.
Check the wiring of the
limit inputs.
Check to see if the Servo
Drive gain is too low.
Check to see if the in-posi-
tion range is too narrow.
Check the homing
approach velocity.
Check the axis parame-
ters in the Sysmac Studio.
---
Use a marker pen to mark
the motor shafts, cou-
plings, and other mechani-
cal 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, the home may
be shifted by one motor
rotation due to slight
changes in the timing of
reading the sensor input.
Countermeasure
If there is an error, follow
troubleshooting proce-
dures for it.
Wire all connections cor-
rectly.
Wire all connections cor-
rectly.
Wire the limit inputs cor-
rectly.
Wire all connections cor-
rectly.
Increase the Servo Drive
gain.
Increase the in-position
range.
Lower the homing
approach velocity of the
MC Function Module.
After setting the axis
parameters correctly,
download them to the MC
Function Module.
Replace the Industrial PC.
Securely tighten the con-
nections that shifted.
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.
11-13
11