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Switch Amplifier

Switch Amplifier
  List Price (ex VAT): £140.89  
  Stock On Back Order  
  Order Code: KCD2SR2  
  Manufacturer Code: 70112148  

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Product details

Intrinsic safety & signal conditioning

Switch amplifier - 12.5mm

This signal conditioner transfers digital signals (NAMUR sensors/mechanical contacts) from the field to the control system.

The proximity sensor or switch controls a form A normally open relay contact for the 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, relays revert to their de-energized state and LEDs indicate the fault according to NAMUR NE44.

A unique collective error messaging feature is available when used with the Power Rail system.

Due to its compact housing design and low heat dissipation, this device is useful for detecting positions, end stops and switching states in space-critical applications.

Technical specification
Supply voltage:20-30V d.c.
Power consumption:≤600mW
No. of channels:2
Input/output:Digital input
 Output I:Signal relay
 Output II:Signal relay
 Energized/de-energized delay:≤20ms/≤20ms
 Mechanical life:10⁷ switching cycles
 Rated values:acc. to EN 60947-5-6 (NAMUR)
 Open circuit voltage:Approx. 10V d.c.
 Short circuit voltage:Approx. 8mA
 Switching point:1.2-2.1mA
 Switching hysteresis:Approx. 0.2mA
 Line fault detection:Breakage I ≤0.1mA
Short-circuit I ≥6.5mA
 Pulse/pause ratio:≥20ms/≥20ms
Ambient temperature:-20 to +60°C
Protection rating:IP20
Mounting:35mm DIN rail or panel mount
Dimensions:w12.5 x h114 x d119mm

  • 12.5mm slimline housing
  • 3 port isolation
  • 2-channel signal conditioner
  • 24V d.c. supply (power rail)
  • Dry contact or NAMUR inputs
  • Relay contact output
  • Line fault detection (LFD)
  • Up to SIL2 acc. to IEC 61508
  • Limit detection with dual form C alarm contacts
  • Programmable logic functions via pushbuttons
  • Removable terminals reduce maintenance time
  • Fault detection and alarming

  • PLEASE NOTE: This device is not suitable for use in hazardous areas

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