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Sensor / Switch Amplifier

Sensor / Switch Amplifier
  List Price (ex VAT): £198.35  
  Stock On Back Order  
  Order Code: KFA5SR2EX2W  
  Manufacturer Code: 103370  

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Product details

Intrinsic safety & signal conditioning

Switch amplifier - a.c. powered

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 de-energized state and the LEDs indicate the fault according to NAMUR NE44.

Technical specification
Supply voltage:103.5-126V a.c.
Input/Output:Digital input
No. of Channels:2
Output:Signal relay
 Rated values:acc. to EN 60947-5-6 (NAMUR)
 Open circuit voltage:Approx. 8V d.c.
 Short circuit current:Approx. 8mA
Switching frequency:<10Hz
Ambient temperature:-20 to +60°C
Protection rating:IP20
Mounting:35mm DIN rail or panel mount
Dimensions:w20 x h119 x d115mm

  • 3 port galvanic isolation
  • 2-channel isolated barrier
  • 115V a.c. supply
  • Dry contact or NAMUR inputs
  • Relay contact output
  • Line fault detection (LFD)
  • Reversible mode of operation
  • Up to SIL2 acc. to IEC 61508/IEC 61511
  • DIN rail/power rail solutions
  • Removable terminals reduce maintenance time
  • Fault detection and local indication

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