KFD2-STC4-Ex1.2O | Pepperl+Fuchs SMART Transmitter Power Supply

Description

KFD2-STC4-Ex1.2O is a Pepperl+Fuchs SMART transmitter power supply for analog signals with 0/4–20 mA input and output.

Input

• Connection Side: Field side

• Terminals: 1+, 2−, 3 or 5−, 6+

• Input Signal: 0/4 ... 20 mA

• Open Circuit Voltage / Short-Circuit Current (1+, 3−): 22.7 V / 38 mA

• Voltage Drop (5, 6): ≤ 2.4 V at 20 mA

• Input Resistance:
  • Terminals 2−, 3: max. 76 Ω
  • Terminals 1+, 3: max. 500 Ω (250 Ω load)

• Available Voltage (1+, 3): ≥ 16 V at 20 mA

Output

• Connection Side: Control side

• Terminals: 7−, 8+, 9; 10−, 11+, 12

• Load: 0 ... 550 Ω at 20 mA

• Output Signal: 0/4 ... 20 mA (overload > 25 mA)

• Ripple: Max. 50 µA rms

Performance

• Accuracy (at 20 °C): ≤ 10 µA (includes calibration, linearity, hysteresis, supply fluctuation)

• Temp. Influence: 0.25 µA/K

• Frequency Range:
  • Field → Control: 0 ... 7.5 kHz (−3 dB at 0.5 Vpp)
  • Control → Field: 0.3 ... 7.5 kHz (−3 dB at 0.5 Vpp)

• Settling Time: 200 µs

• Rise/Fall Time: 20 µs

Isolation

• Output / Power Supply: Functional, 50 V AC

• Output / Output: Functional, 50 V AC

Indicators

• Display: LED

• Labeling: Space available at front