- 74 –
No.JXC
※
-OMY0002
Trouble
No.
Trouble
Possible
cause
How to diagnose the trouble
Solutions
4
The electric
actuator does
not move at all.
Lock release
error
Check if you can hear the sound
of lock release when the manual
lock switch is turned on and off.
If there is no sound of lock release from
the electric actuator with lock, the lock
may be broken. If the trouble continues,
please contact SMC.
External
device fault
Check that the PLC connected
to the controller operates
correctly.
Check the operation by test run using the
controller setting software, etc.
If the
electric actuator is operated, a
signal output from the PLC is suspected.
Take appropriate measures by referring
to the Operation Manual for the
controller.
→
6.3 The parallel I/O signal is
detailed P.29
Inappropriate
specifications
Check that the combination of
the electric actuator and
controller is correct?
Check if the product number of the used
the electric actuator matches with the
electric actuator which is applicable to
the controller.
→
3. Product Specifications P.16
If the 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 the 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.
Stop
command
If it is not energized, the servo
will be OFF and does not
operate. Check if a voltage of 24
VDC is applied to the EMG
terminal.
Apply 24 VDC to the EMG terminal.
Move
occasionally.
Wiring fault
Is the wiring connected
correctly?
Check if the wiring is connected correctly
or if there is broken wire or short-circuit
by referring to this Operation Manual.
Correct the wiring and check that the
input/output of each signal is correct.
Separate the power supply for the
controller and the I/O signal power supply.
→
4. External Wiring Diagram P.21
→
6.4 Parallel I/O Wiring Example P.36
Counter-
measures
against noise
Check that the Grounding is
connected correctly?
Are power cables for other
equipment and controller cables
bundled together?
Connect to Ground correctly.
Avoid bundling the cables with power
cables of other equipment.
Take appropriate measures by referring
to the Operation Manual for the
controller.
→
3.4 How to install P.19
Inappropriate
parameter
Check that the parameter values
are correct.
Check the combination of the electric
actuator and controller. Modify the
parameters accordingly and check the
operation.
→
7. Setting Data Entry P.37
