سوئیچ امپلی فایر KFD2-SR2-EX2.2S

FEATUERS

2channel isolated barrier*
  voltage :24vdc*
Dry contact or NAMUR inputs*
Usable as signal splitter (1 input and 2 outputs) 
  2*2 relay contact outputs with AND logic 
 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.
Each sensor or switch controls two form A normally open relay
contacts 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.