Pepperl+Fuchs KFD2-STC4-Ex2 SMART Transmitter Power Supply, 2-channel isolated barrier, 24 V DC supply (Power Rail).

Technical Data

General specifications

Signal type Analog input

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Supply

Connection Power Rail or terminals 14+, 15- Rated voltage Ur 20 ... 35 V DC

Ripple within the supply tolerance

Power dissipation 1.8 W

Power consumption max. 2.7 W

Input

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

Output

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)

Ripple max. 50 µA rms

Transfer characteristics

Deviation at 20 °C (68 °F), 0/4 ... 20 mA

≤ 10 µA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage

Influence of ambient temperature 0.25 µA/K

Frequency range field side into the control side: band width with 1 Vpp signal 0 ... 7.5 kHz (-3 dB)

safe area to hazardous area: band width with 1 VSS signal 0.3 ... 7.5 kHz (-3 dB)

Settling time 200 µs

Rise time/fall time 20 µs

Galvanic isolation

Output/power supply functional insulation, rated insulation voltage 50 V AC

Output/Output functional insulation, rated insulation voltage 50 V AC

Indicators/settings

Display elements LED

Labeling space for labeling at the front