The PSD24Ex module supplies the excom®

system with power to the full extension. The

module rack is designed in a combined protection rating of Ex m, Ex e and Ex i and can

therefore be used in zone 1. It is also fully

potted and installed in a die-cast aluminium

frame.

Powered with 24 VDC. The external power

supply is hooked up to Ex e clamps at the

module rack. These clamps located under

a closure cap must not be plugged or unplugged under power. Interventions are only

allowed after switching off the respective supply voltage.

Redundancy:

Two power supply units can be installed in

combination with a suitable module rack. In

case of power cut or failure of one device, the

second unit provides the power for the whole

system. Different potentials can be supplied.

■ DC power supply module, supplies a fully

assembled module rack in zone 1