PEPPERL FUCHS SMART Transmitter Power Supply KFD2-STC5-Ex1.H
General specifications
Signal type Analog input
Functional safety related parameters
Safety Integrity Level (SIL) SIL 2
Systematic capability (SC) SC 3
Supply
Connection Power Rail or terminals 14+, 15-
Rated voltage 18 ... 30 V DC
Ripple within the supply tolerance
Power dissipation ≤ 1 W at maximum load
Power consumption ≤ 1.6 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: 24 V / 25 mA
Input resistance max. 265 Ω terminals 2-, 3 , max. 330
Ω terminals 1+, 3
Available voltage ≥ 17 V at 20 mA ; ≥ 21 V at 4 mA ,
terminals 1+, 3
Output
Connection side control side
Connection terminals 7+, 8-, 9- (sink)
terminals 7-, 8+, 9+ (source)
see additional information
Load 0 ... 800 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 terminal 9 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
