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Product function

This isolated barrier is used for intrinsic safety applications. The device supplies 2-wire and 3-wire SMART transmitters, and can also be used with 2-wire SMART current sources. It transfers the analog input signal to the safe area as an isolated current value. Digital signals may be superimposed on the input signal in the hazardous or non-hazardous area and are transferred bi-directionally. The device provides a sink mode or a source mode output on the safe area terminals. The device has an internal resistor. Use this resistor if the HART communication resistance in the control circuit is too low. Test sockets for the connection of HART communicators are integrated into the terminals of the device.

Product features

1-channel isolated barrier

24 V DC supply (Power Rail)

Input 2-wire and 3-wire SMART transmitters and 2-wire SMART current sources

Output 4 mA ~20 mA current sink/current source

Terminals with test points

Up to SIL 2 acc. to IEC/EN 61508

Housing width: 20 mm

HART communication

Test sockets

Safety Integrity Level (SIL): SIL 2

Rated voltage: 18 ~30 V DC

Application area

Industrial automation



KFD2-STC5-Ex1 Manual.pdf