SMART Current Driver/Repeater KFD0-SCS-Ex1.55
Intrinsic Safety Barriers
1-channel isolated barrier, 24 V DC supply (loop powered), Current input/output 4 mA ... 20 mA, HART I/P or transmitter power supply, Low voltage drop, Line fault detection (LFD), Up to SIL 2 acc. to IEC 61508, Rated voltage: loop powered, Explosion protection: Ex protection, Transfer direction: to the field / to the control system.
Pepperl+Fuchs Intrinsic Safety Barriers SMART Current Driver/Repeater KFD0-SCS-Ex1.55
Signal type: Analog input/analog output
This isolated barrier is used for intrinsic safety applications. It is loop powered and isolates a 4 mA ... 20mA signal for transmitters and positioners and is HART compatible.
With a noticeably lower power loss compared to active isolator modules, the barriers 5 V drop makes it suitable for transmitter applications with unstable power sources between 20 V DC ... 30 V DC.
Line fault detection of the field circuit is possible if the control loop in the safe area is monitored for overscale or underscale conditions of the 4 mA ... 20mA range.
The module can also be used for controlling solenoid valves and discrete outputs, such as LEDs. In this case, terminals 8- and 9+ are driven with a 24 V signal.
Pepperl+Fuchs offers intrinsically safe Current Drivers as modules of the K-System Isolated Barriers.
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