Connection module for field device in the explosion-proof area
AssigneePepperl + Fuchs GmbH
InventorMatthias Oettler
Life of this patent
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Abstract
The invention relates to a connection module for field devices in the explosion-protected area, having a housing with a plurality of controller-end terminals to connect to at least one input/output module and with field-end terminals to connect to the field devices. The connection module is characterized in that different resistors are present in the housing to provide intrinsically safe pairs of field-end terminals with different characteristic values, said resistors being hardwired in the housing to different field-end terminals and/or controller-end terminals.
Claims9
Connection module for field devices in the explosion-protected area,
- having a housing with a plurality of controller-end terminals to connect to at least one input/output module, and
- having field-end terminals to connect to the field devices, wherein different resistors are present in the housing to provide intrinsically safe pairs of field-end terminals with different characteristic values, said different resistors being hardwired in the housing to different field-end terminals and/or controller-end terminals,
- characterised in that
- at least one series connection of resistors is present in the housing,
- a plurality of pick-ups of the series connection are connected to controller-end terminals or field-end terminals,
- a plurality of controller-end terminals are present to connect a plurality of current/voltage supplies, and
- a plurality of field-end terminals are present to form a plurality of intrinsically safe pairs of field-end terminals,
- a different resistance for the intrinsical effective in safety being effective in dependence of the respectively used terminals.
Dependencies are inferred from the claim text.