SMC Networks LECP2 D Series, Operation Manual, Page: 64 / 67

-
63
-
No.JXC
※
-OMU0030-A
Troubl
e No.
Trouble
Possible
cause
How to diagnose the trouble Solutions
1
LED is OFF
Power fault
Check if the LED (green) of the
controller is lit.
The power supply, voltage or current
should be modified to an appropriate one.
→ 4. External Wiring Diagram
→ 5. CN1: Power supply cable
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 CN4 I/O signal
power supply.
→ 4. External Wiring Diagram
→ 6.4 Parallel I/O Wiring Example
2
Flashing
ALM
Stroke
study is not
completed Just after the power supply is
supplied to the controller, is ALM
LED (red) flashing?
Flashing of the controller ALM LED (red)
immediately after power supply indicates
the stroke study has not been performed.
Please perform Stroke study.
→ 7.1(3) Stroke study
3
ALM is ON
Alarm
condition Check if the controller is in the
alarm condition.
Refer to the instruction manual of the
controller and confirm the type of alarm.
Take appropriate measures according to
the contents.
→ 11. Alarm Detection
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.
Make a confirmation of operation by a test
run only with the controller.
Take appropriate measures by referring to
the Operation Manual for the controller.
→ 6. CN4: Parallel l/O Connector
Servo OFF
Is servo OFF (controller green LED
flashes)?
Servo is OFF and the operation is not
available under the following conditions.
Eliminate the cause and follow the
operation instruction after the servo is
turned ON.
- STOP input is ON.
- Motor power supply is OFF.
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 CN1
controller and the CN4 I/O signal power
supply.
→ 4. External Wiring Diagram
→ 6.4 Parallel I/O Wiring Example
Counter-m
easures
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