بریر KFD2-SR2-EX1.W

PEPPERL FUCHS KFD2-SR2-EX1.W

Switch Amplifier KFD2-SR2-Ex1.W

• 1-channel isolated barrier
• 24 V DC supply (Power Rail)
• Dry contact or NAMUR inputs
• Relay contact output
• Line fault detection (LFD)
• Reversible mode of operation
• Up to SIL 2 acc. to IEC 61508/IEC 61511
• Function
  This isolated barrier is used for intrinsic safety applications. It
  transfers digital signals (NAMUR sensors/mechanical
  contacts) from a hazardous area to a safe area.
  The proximity sensor or switch controls a form C changeover
  relay contact for the safe area load. The barrier output
  changes state when the input signal changes state. The
  normal output state can be reversed using switch S1.
  Switch S3 is used to enable or disable line fault detection of
  the field circuit.
  During an error condition, the relay reverts to its de-energized
  state and the LEDs indicate the fault according to
  NAMUR NE44.
  A unique collective error messaging feature is available when
  used with the Power Rail system.