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Smart Current Driver 1 Analogue O/P

Smart Current Driver 1 Analogue O/P
  List Price (ex VAT): £228.81  
  In stock  
  Order Code: KFD2-SCD2-1.LK  
  Manufacturer Code: 126755  

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Product details

Intrinsic safety & signal conditioning

Smart current driver

This signal conditioner drives SMART I/P converters, electrical valves, and positioners and provides isolation for non-intrinsically safe applications.

Digital signals are superimposed on the analog values at the field or control side and are transferred bi-directionally.

Current transferred across the d.c./d.c. converter is repeated at terminals 1 and 2.

An open and shorted field circuit presents a high input impedance to the control side to allow line fault detection by control system.

If the loop resistance for digital communication is too low, an internal resistor of 250Ω between terminals 8 and 9 is available, which may be used as the HART communication resistor.

Sockets for the connection of a HART communicator are integrated into the terminals of the device.

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

Technical specification
Supply voltage:10-35V d.c.
Power consumption:1W at 20mA
No. of channels:1
Input/output:Analogue output
 Voltage:≥14V at 20mA
 Input resistance:>100kΩ when wiring resistance in the field
<50Ω or >800Ω at 20mA
 Voltage drop Ud:Approx. 4V or internal resistance 200Ω at 20mA
 Current:4-20mA limited to approx 25mA
Ambient temperature:-20 to +60°C
Protection rating:IP20
Mounting:35mm DIN rail or panel mount
Dimensions:w20 x h124 x d115mm

  • 3 port isolation
  • Single-channel signal conditioner
  • 24V d.c. supply (Power Rail)
  • Current output up to 700Ω load
  • HART I/P and valve positioner
  • Line fault detection (LFD)
  • Accuracy 0.05%
  • Terminal blocks with test sockets
  • Up to SIL2 acc. to IEC 61508
  • Limit detection with dual form C alarm contacts
  • 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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