SMC Networks LECP6 Series - Troubleshooting: Wiring, Data, and Voltage Issues

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4
The electric
actuator does
not move
correctly.
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
Inappropriate
specifications
Check that the combination of
the electric actuator and
controller is correct?
Check if the product number of the used
electric actuator matches with the
electric actuator which is applicable to
the controller.
→ 3. Product Specifications
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.
→ 8.4 Controller input signal response
time
Data writing
failure
Is the data (step data or
parameters) written correctly?
One of the following actions occurred
during data writing (while the power
supply LED (green) was on).
󳜪 Turn off the controller input power
supply
󳜪Disconnected/ connected cables.
Input correct data (step data,
parameter) again and confirm operation.
→ 3.2 Parts description
→ 7. Setting Data Entry
Insufficient
speed
Inappropriate
basic
parameters
Check that the parameter values
are correct.
Check the max. speed and acceleration
speed of the electric actuator and be sure
to input the correct parameters.
→ 7. Setting Data Entry
Inappropriate
step data
Is the operation pattern
trapezoidal?
In case of such operation, the electric
actuator may start slowing down before
it reaches the maximum speed. Modify
the setting to make the moving distance
longer or the acceleration larger.
→ 7. Setting Data Entry
Inappropriate
specifications
Check that the combination of
the electric actuator and
controller is correct?
Check if the electric actuator is
operating within the specification
range.
Check if the product number of the used
electric actuator matches with the
electric actuator which is applicable to
the controller.
Check if the operating condition of the
electric actuator is within the
specification range.
→ 3. Product Specifications
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