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Product Nomenclature and Function
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SH-9008AT-POE Reference Manual
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3.
Power Failure Detection DIP Switch
Power output failure can be detected with the set of the DIP switch.
The relay pins (pin-3 and pin-4) of the power connector are open in normal operation mode, but
they are closed before the power is supplied or when the power output of the PWR-1 or PWR-2
drops.
DIP-1
DIP-2
Description
OFF
ON
Relays are always open when the product is used.
OFF
ON
The relay closes when the power failure of PWR-1 drops below 7V.
ON
OFF
The relay closes when the power failure of PWR-2 drops below 7V.
ON
OFF
The relay closes when the power of PWR-1 or PWR-2 drops below 7V.