Pepperl+Fuchs KFD2-STC5-Ex1.2O SMART Transmitter Power Supply, 1-channel isolated barrier.

Technical Data

General specifications

Signal type Analog input

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Technical Data

Systematic capability (SC) SC 3

Supply

Connection Power Rail or terminals 14+, 15-

Rated voltage Ur 18 ... 30 V DC

Ripple within the supply tolerance

Power dissipation ≤ 1 W at maximum load

Power consumption ≤ 1.7 W at maximum load

Input

Connection side field side

Connection terminals 1+, 2-, 3

Input signal 4 ... 20 mA

Open circuit voltage/short-circuit current terminals 1+, 3: 23 V / 25 mA

Input resistance max. 265 Ω terminals 2-, 3 , max. 330 Ω terminals 1+, 3

Available voltage ≥ 16 V at 20 mA ; ≥ 20 V at 4 mA , terminals 1+, 3

Output

Connection side control side

Connection terminals 7+, 8-, 9-; 10+, 11-, 12- (sink)

terminals 7-, 8+, 9+; 10-, 11+, 12+ (source)

see additional information

Load 0 ... 600 Ω

Output signal 4 ... 20 mA (overload > 25 mA)

Ripple max. 50 µA rms

External supply (loop) 2 ... 30 V DC

If the external voltage is > 19 V, a load ≥ ((V - 19) / 0.02) Ω is required. V represents

the value of the external voltage.

The internal 250 Ω resistor at terminals 9 and 12 can be used as a load.

Transfer characteristics

Deviation at 20 °C (68 °F), 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: bandwidth with 0.5 Vpp signal 0 ... 7.5 kHz (-3 dB)

control side into the field side: bandwidth with 0.5 Vpp signal 0.3 ... 7.5 kHz (-3 dB)

Settling time 200 µs

Rise time/fall time 100 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