Product Specifications; Function - Pepperl+Fuchs H-System Manual

H-System – Isolated Barriers and Termination Boards

Product Specifications

2 Product Specifications
2.1

Function

Isolated barriers are used to protect intrinsically safe circuits in explosive areas. In addition
to the required current, voltage and power limitation, the isolated barriers have a galvanic
isolation between the field circuit and the controller.
The H-System isolated barriers are mounted on termination boards. Pre-wiring is possible on
termination boards. To close the signal circuit, the isolated barriers are simply plugged in.
The isolated barriers can be replaced during live operation when the wiring is connected.
Figure 2.1
Generic and control system-specific termination boards are available in the H-System.
Termination boards can be adapted to specific input/output requirements. These requirements
can be implemented via
• Various connecting plugs to the controller
• Various terminals to the field device
• A large selection of isolated barriers
6
Generic H-System termination board with isolated barriers