SIL 3 Digital Relay Output, Loop Powered


The single channel DIN Rail and Termination Boards Digital Relay Output model D5244S is loop powered digital output module enabling a Safe Area loop voltage signal, to control a device in Hazardous Area, providing 2 port isolation (input/output). Output is galvanically isolated.
Typical applications include switching of Hazardous Area circuits, changing of polarities and sounder tones, calibrating of strain gauge bridges, resetting of field devices, testing of fire detectors.
Output channel provides a SPDT relay, with two contacts defined NO (Normally Open) and NC (Normally Close) when the output relay is de-energized. Considering channel NE (Normally Energized), the output relay is energized, so that NO contact is closed (useful for NE loads or Hazardous Area circuits) and NC contact is open (useful for ND loads or Hazardous Area circuits). The safe state is reached when the channel and the output relay are de-energized, so that NO contact is open (deenergizing loads or Hazardous Area circuits) and NC contact is closed (energizing loads or Hazardous Area circuits).


• Output to Zone 0 (Zone 20), installation in Zone 2.
• Voltage level input.
• Two SPDT Relay Output Signals.
• Two port isolation, Input/Output/Supply.
• EMC Compatibility to EN61000-6-2, EN61000-6-4, EN61326-1, EN61326-3-1 for safety systems.
• High Reliability, SMD components.
• High Density, two channels per unit.
• Simplified installation using standard DIN Rail and plug-in terminal blocks or customized Termination Boards.
• 250 Vrms (Um) max. voltage allowed to the instruments associated with the barrier.


18-30 Vdc


1 (2 channels: D5244D )

SIL level

Image of D5244S (WEB)


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