Omron CS1W-MCH71 -, Operation Manual

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630
Troubleshooting
Section 11-1
18 Origin search
cannot be exe-
cuted. An error or warning has
been generated. Check the contents of the error
or warning. If there is an error or warning,
follow the instructions.
19 The Servo Driver’s origin
proximity input is wired
incorrectly. Use the Support Tool’s input sig-
nal monitor function to check
whether the sensors are turning
ON and OFF normally. Correct the wiring.
20 The communications cable
to the Servo Driver is not
correctly connected. Check the communications
cable. Correct the wiring.
21 The direction of rotation
does not match the direc-
tion of the limit input. If axis rotation is reaching the
mechanical limit without revers-
ing direction, use the Support
Tool to check whether the limit
inputs are turning ON and OFF
normally. Correct the limit input wiring.
22 The limit input is wired
incorrectly. Check the limit input wiring. Correct the limit input wiring.
23 Origin search cannot be
executed because the Unit
is in Automatic Mode.
(Excluding DATUM com-
mand)
• Monitor the bit [Automatic
Mode].
• Set the mode to Program
Mode and forcibly set only the
bit [Origin Search].
Set the mode to Manual Mode
and then execute Origin Search.
(Change the ladder program.)
24 Commands cannot be
received from the ladder
program because the oper-
ating mode of the MC Unit
is Tool Mode. Check the operating mode with
the Support Tool. Set the mode to RUN Mode or
CPU Mode.
25 Origin search
cannot be exe-
cuted. Another axis control bit is
ON at the same time. • Check whether another axis
control bit is ON at the same
time.
• Try executing Origin search
using the Support Tool.
Turn OFF the other axis control
bit and then turn ON the bit [Ori-
gin Search].
(Change the ladder program.)
26 Not entering the in-position
range. • Is the MC Unit parameter’s in-
position range too narrow?
• Is the Servo Driver gain too
low?
• Increase the MC Unit parame-
ter’s in-position range.
• Increase the Servo Driver or
MC Unit gain.
27 The origin search creep
speed is too fast. Check the origin search creep
speed. Decrease the origin search
creep speed.
28 The parameters are set
incorrectly. Upload and check the MC Unit
parameters with the Support
Tool. Set the parameters correctly,
transfer them to the MC Unit,
and write them to flash memory.
29 The MC Unit is defective. Replace the MC Unit.
30 The origin estab-
lished by the ori-
gin search
sometimes
changes. There is some looseness in
couplings or other mechan-
ical connections. Check whether there is any
deviation from the markings at
the couplings between the
motor and axes, or at any other
connections. Tighten up the connections.
31 There is no origin margin. Monitor the origin margin using
the Support Tool. If the value is
near the Servomotor’s Encoder
resolution x the ratio (1, 2, or 4),
or near zero, a deviation of one
motor revolution may occur at
the time of the origin search due
to even a minute change in the
timing of sensor inputs. Remove the motor coupling and
adjust it by about a 1/4 turn, so
that the origin margin pulses will
be about 1/2 of the Servomo-
tor’s encoder resolution x the
ratio (1, 2, or 4), and then try
executing the origin search
again.
No. Problem Probable causes Item to check Remedy