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Beckhoff at the Light+Building 2008: Hall 9.0, Booth D50

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article image KL2784 and KL2794 digital output terminals
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The KL2784 and KL2794 digital output terminals for the Beckhoff I/O system from Beckhoff Automation are able to switch voltages up to 24 V AC/DC using advanced Mosfet transistors. The four potential-free semiconductor switches represent a substitute for relay contacts.

They are short-circuit-proof and are free from wear, thereby increasing availability for applications.

The KL2784 and KL2794 are well suited, for example, to building automation systems for switching valves and pumps in heating, air conditioning and ventilation systems.

Conventional mechanical contacts are replaced by electronics of the KL2784 and KL2794 terminals. Mosfet transistors integrated in the terminals switch the voltages without any mechanical parts having to be moved.

Since there is no wear, a long service life can be expected even when switching is very frequent. The terminals are designed for peak currents of up to more than 50 A and, as a result, are virtually shortcircuit- proof.

The terminals are equally suitable for alternating and direct current. The four outputs of the KL2784 are potentially bound to the power contact; the four outputs of the KL2794 are potential-free.

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