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News

Signal conditioners feature DIN rail power bus for redundant/primary power

Acromag : 23 January, 2013  (New Product)
Acromag’s new TT330 series of DC-powered isolated transmitters help reduce wiring requirements. All TT330 signal isolators and converters are ready to receive primary or redundant 12-32V DC power from a DIN rail bus. The power bus simplifies power distribution to multiple units without wiring. Just snap the units together using the plug-in DIN rail connector terminal blocks to conveniently share a single power source. The bus power connection also provides an easy method to implement backup power.
Signal conditioners feature DIN rail power bus for redundant/primary power

Power is normally connected to the TB4 power terminal on top of the unit. However, TT330 transmitters are equipped for option power via a DIN rail bus connector when mated to the plug-in terminal block. Power input via the bus connector terminal is diode-coupled to the same point as unit power connected atTB4 power. Power connections are isolated from input and output.

You can elect to power multiple units by snapping them together along the DIN rail bus, then using a mating terminal block (select a Left or Right side connector). While the intent of the bus power connector is to allow several units to conveniently share a single supply, you may also use the bus power connector to redundantly power units. This allows a backup supply to seamlessly maintain power to the unit(s) should the main supply at TB4 fail. Variations in power supply voltage have negligible effect on transmitter accuracy.

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