Pepperl+Fuchs KFD2-STC4-2

Transmitter Power Supply

KFD2-STC4-2 is an intrinsically safe barrier with 2-channel supply of SMART converters from Pepperl+Fuchs. It is intended for use in hazardous areas where galvanic isolation between hazardous and safe areas is required.

Datasheet:

• Signal type: Analog input
• Safety level (SIL): SIL 2
• Connection: Power bus or terminals 14+, 15-
• Nominal voltage: 20 ... 35 V DC
• Ripples: Within the permissible power supply range
• Dissipated power: 1.8 W
• Power consumption: Max. 2.7 W
• Connection side: Field side
• Connection: Terminals 1+, 3-; 4+, 6-
• Input signal: 0/4 ... 20 mA
• Available voltage: ≥ 16 V at 20 mA, terminals 1+, 3
• Connection side: Control side
• Connection: Terminals 7-, 8+; 10-, 11+
• Load: 0 ... 550 Ω at 20 mA
• Output signal: 0/4 ... 20 mA (overload > 25 mA)
• Pulsation: Max. 50 µA rms
• Deviation: At 20 °C (68 °F), 0/4 ... 20 mA ≤ 10 µ A, incl. calibration, linearity, hysteresis, load and supply voltage fluctuations
• Frequency range: Field side on the control side: bandwidth with a signal of 1 V pp 0 ... 7.5 kHz (-3 dB) safe zone - dangerous zone: bandwidth with a signal of 1 V SS 0.3 ... 7, 5 kHz (-3 dB)
• Installation time: 200 µs
• Rise/fall time: 20 μs
• Output/Power Supply: Functional isolation, rated isolation voltage 50V AC
• Output/output: Functional isolation, nominal isolation voltage 50 V AC
• Display elements: LED indicators
• Marking: Space for marking on the front
• Electromagnetic compatibility: NE 21: 2011
• Degree of protection: IEC 60529: 2001
• Protection against electric shock: UL 61010-1: 2012
• Ambient temperature: -20 ... 60 °C (-4 ... 140 °F)
• Degree of protection: IP20

Advantages:

• Low Power Consumption: Consumes little power, making it an economical choice.
• Wide range of input signals: Supports a wide range of input signals, making it compatible with various types of sensors.
• Dual Channel Operation: Supports two SMART transducers, making it an economical choice for multi-channel applications.