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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 kit, 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.
→ 6.4 Parallel I/O Wiring Example
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
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
CN1controller and the CN5 I/O signal
power supply.
→ 4. External Wiring Diagram
→ 6.4 Parallel I/O Wiring Example
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
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
Voltage drop
Check if there has been any
temporary voltage drop in the
power supply.
(If there is a temporary voltage
drop in the power supply, the
EMG terminal of CN1 power
connector will turn OFF so the
electric actuator will stop.
However, this stop will be
released when the voltage
recovers.)
There is a possibility of a momentary
voltage drop because the capacity of the
power supply is insufficient, or the
power supply has inrush current
restraining specification.
→ 3. Product Specifications
