z Do not wire, inset or pull out the cable plug with power applied. Otherwise there is a danger of electric
shock or circuit damage.
z Installation and wiring must be fastening and reliable. Bad contact may result in faulty operation of
equipment.
z The input/output cable of high frequency signal should use the shielding cable to improve the interference
rejection of the system.
Notes for wiring
z Installation and wiring can be done only after the external power supplies are all disconnected. Otherwise
there is a danger of electric shock or equipment damage.
z Once the installation and wiring of the PLC is complete, cleanup the spot at once. To prevent the electric
shock, replace the port cover of the product before power is on.
z When wiring AC supplies, the ‘Live’ cable should be connected to the ‘L’ terminal and the ‘Neutral’ cable
should be connected to the ‘N’ terminal. Otherwise the PLC will be damaged.
z Don’t power +24V port of the main module by the external power supply. Otherwise the PLC will be
damaged.
z Do not lay I/O signal cables of the PLC next to other power cables or strong interference circuits.
z Do not make the earth port (PG) of the main module and the heavy current power system share the same
earthing.
Notes for operation and maintenance
z Do not touch the ports when the power is applied, otherwise there is a danger of an electric shock or faulty
operation of equipment.
z The cleaning and the fastening work can be done only after the power supply has been disconnected;
otherwise there is a danger of electric shock.
z Only after the power supply has been disconnected, can the communication signal cables and the cables
of the expansion module or control unit be connected or removed. Otherwise there is a danger of
equipment damage or faulty operation of equipment.
z Do not disassemble the PLC. Otherwise it may destroy the inner electrical components.
z Read through this manual carefully before operating the PLC. Safe and efficient operation of the product,
such as program alternation, trial operation, start and stop, is only based on correct operation and
maintenance.
z Do not replace the button cell battery with power applied. If the battery replacement is indeed to be done
with power applied, it shall always be carried out by adequately trained electric technical personnel
wearing insulated gloves.
Notes for the product disposal
Note the following when disposing the PLC:
z Explosive of the electrolytic capacity: The capacities on the circuit board may explode when burning.
z Exhaust gas when burning: The main body of the PLC is plastic, and it may produce poisonous gas when
burning.
z Disposal of button cell battery: Classified collecting and disposing, and separating from the daily-life
rubbish.
Follow the local environmental regulations to dispose the PLC or dispose it as industrial waste.
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