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