Alinking ALC-9451 Manual do Utilizador Página 87

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External Alarm I/O Circuit Diagram
Warning! The alarm will be
triggered when alarm pin 4 & 5
are formed as a short circuit.
Please do not connect the electric
voltage or current into alarm input
p
in because the electronic current
Pin 5
Pin 4
Warning! The alarm will be
triggered when alarm pin 4 & 6
are formed as a short circuit.
Please do not connect the electric
voltage or current into alarm input
pin because the electronic current
Pin 6
Warning!
Where connecting of a low or high current loop to the external alarm input/output of
the product is required, the wiring and connection shall be conducted by a qualified
electrician. Incorrect wiring may bring about damage to the product fatal electric
shock.
Direct connection of the external alarm input/output terminal to high-current
equipment is not allowed and a customized repeat circuit might be required (provided
by the customer) for some cases to isolate the terminal and the high-current
equipment. Where the voltage/current of an external device exceeds the loading
capability (5V) of the Alarm I/O, the product would be damaged seriously.
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