Pepperl+Fuchs USB intrinsic safety barrier

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The Pepperl+Fuchs USB intrinsic safety barrier supplies EXTA2 keyboards or similar devices in Zone 1/21. The barrier connects a host device, such as an industrial PC that is installed in Zone 2 or in non-hazardous areas, to a USB device such as a Pepperl+Fuchs EXTA2 keyboard or a similar device in a Zone 1/21 environment. To transmit USB signals from hazardous areas, it converts the two USB channels into intrinsically safe circuits.

The barrier is certified to lead intrinsically safe circuits into Zone 1/21 hazardous areas and is a one-to-one data connector — data is passed through without buffering. The barrier is powered via the USB host, so no extra power is required.

A suitable enclosure that corresponds to at least IP54 in accordance with IEC/EN 60079-0 allows the barrier to be used in Zone 2/22, while the connected EXTA2 keyboard can be installed in Zone 2/22 or 1/21.

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