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-35-
JXC
※
-OMX0018
17.2 Position / Speed problems
Problem
Possible
cause
Investigation method and location of
possible cause
Countermeasure
The
actuator
does not
move to
the
correct
position.
Incorrect
Origin
position
If it is a pushing operation, repeat a return to
origin operation several times to check if the
actuator returns to the origin correctly.
Perform the return to origin position
operation several times to check the origin
position.
Take measures to make the actuator operate
normally (remove foreign matter that
interferes with the actuator movement, etc.)
Incorrect
parameters
Check that the parameter values are
appropriate and the program is correct.
Review the maximum speed, the maximum
acceleration and the maximum deceleration
of the actuator.
Modify the values of the parameters and test
the operation.
Unsuitable
specification
Check if the controller specifications are
appropriate, the power supply is suitable
and the controller is compatible with the
actuator.
If a blank controller is used, check that the
written data is identical with the actuator
used.
Check that the product number of the
actuator used matches with the actuator
which is applicable to the controller before
use.
If a blank controller is used, write the data,
which is identical with the product number of
the actuator used.
Insufficient
speed
Incorrect
wiring
Is the wiring connected correctly?
Check if the controller is wired correctly, if
there are no broken wires or short circuits
with reference to the controller operation
manual.
Correct the wiring and confirm that the
input/output of each signal is correct.
Separate the power supply for the CN1
controller and the CN5 I/O signal power
supply.
Unsuitable
specification
Check if the controller specifications are
appropriate, the power supply is suitable
and the controller is compatible with the
actuator.
If a blank controller is used, check that the
written data is identical with the actuator
used.
Check that the product number of the
actuator used matches with the actuator
which is applicable to the controller before
use.
If a blank controller is used, write the data,
which is identical with the product number of
the actuator used.
Influence of
a magnetic
force
Check if there is equipment which
generates a magnetic force, such as a
magnet or electro-magnetic coil around the
actuator.
The equipment, which generates the
magnetic force, should be kept away from the
motor.
For example, keep 40 mm minimum distance
from the cylinder with auto switch.
Signal
timing
Check the timing of the signal from the PLC
to the controller.
PLC processing delay and controller scan
delay are generated. Please ensure an
interval of 15ms (30 ms if possible) or more
between input signals, and maintain the
signal state.
Data not
stored
correctly
Check whether data (step data, parameter)
is written correctly.
Do not turn off the controller input power or
remove the cable while data is being written
(green light flashing).
Input correct data (step data, parameter)
again and confirm operation.