بریر KFD2-SR2-EX2.W

PEPPERL FUCHS KFD2-SR2-EX2.W

Switch Amplifier KFD2-SR2-Ex2.W

• 2-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
• 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 normal output state
  can be reversed using switches S1 and S2. Switch S3 is used
  to enable or disable line fault detection of the field circuit.
  During an error condition, the relays revert to their deenergized 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.