LX3 Series User Manual V2.0
Part 3 Wiring Precautions
●Before installation and wiring, you must cut off the power.
●Before running, please make sure to attach the cover for terminal on PLC.
●That positive inversion contactor is worked on at the same time will be dangerous.
●PLC will be damaged, if the invalid terminal on the PLC being connected with other devices.
●Please follow the instruction to connect with power supply which provided in this manual. The
range of AC source must be from 100V to 240V.
●Please never directly connect terminal with external power supply which is over 24V.
●Separately grounding is recommended.
●The signal input cable and the signal output cable can’t go with the same cable.
●Never put the signal input/output cable and other power cable together.
●It would be safer if the cable within 20m.
Note: The PLC would stop working, if the power-off time is over 10ms. Long-term power failure
or low voltage will cause the PLC to stop working, and the all the output of this PLC will be
OFF. The PLC would continue work automatically with normal power supply.
Part 4 Maintenance Precautions
●Never touch the PLC when power is on.
●Never clean up PLC when power is on, that may cause the electric shock.
●The manual should be understood before attempting to install or program.
●Never modify structure of PLC.
●If there is something wrong with our products please contact Wecon technology company.
●Working with high frequency and large capacity load will shorten service life.
●Please check the following items:
Keep far away from directing sunshine or other heating element, because that would raise
the temperature of PLC.
Make sure there is no dust or electrical dust in the PLC.
Make sure there is no anomaly in the PLC.
Part 5 Maintenance and Overhaul
(1) Regularly check
● Whether there are short-lived consumables in the programmable controller.
● For the relay output type, if the output relay operates at abnormally high frequency or drives a lar
ge-capacity load, attention must be paid to its impact on the service life.
● Check with other equipment, please pay attention to the following points.
●Whether there any abnormal rise in temperature inside the machine due to other heating elemen
ts or direct sunlight?
●Whether there is dust or conductive dust intruding into the machine.
●Whether there are any loose wiring and terminals and other abnormalities.
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