KFD2-STC5-2

Overview

KFD2-STC5-2 is a Pepperl+Fuchs SMART transmitter power supply designed for analog input signals, providing reliable loop power, galvanic isolation, and functional safety compliance up to SIL 2.

General Information

• Manufacturer: Pepperl+Fuchs

• Model: KFD2-STC5-2

• Signal type: Analog input

• Safety: SIL 2 certified

Power Supply

• Connection: Power Rail or terminals 14+, 15-

• Rated voltage: 18 … 30 V DC

• Ripple: Within supply tolerance

• Power dissipation: ≤ 1.4 W at max load

• Power consumption: ≤ 2.6 W at max load

Input Characteristics

• Connection side: Field side

• Terminals: 1+, 2-, 3; 4+, 5-, 6

• Input signal: 4 … 20 mA

• Open circuit voltage / short-circuit current: 23 V / 25 mA (terminals 1+, 3; 4+, 6)

• Input resistance: Max. 265 Ω (terminals 2-, 3; 5-, 6), max. 330 Ω (terminals 1+, 3; 4+, 6)

• Available voltage: ≥ 16 V at 20 mA, ≥ 20 V at 4 mA (terminals 1+, 3; 4+, 6)

Output Characteristics

• Connection side: Control side

• Terminals:

• 7+, 8-, 9-; 10+, 11-, 12- (sink)

• 7-, 8+, 9+; 10-, 11+, 12+ (source)

• Load: 0 … 600 Ω

• Output signal: 4 … 20 mA (overload > 25 mA)

• Ripple: Max. 50 µA rms

• External supply (loop): 2 … 30 V DC

• Special condition: If Vext > 19 V, load ≥ ((V – 19) / 0.02) Ω required

• Internal load option: 250 Ω resistor at terminals 9 and 12

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