1. General Introduction
It drives a voltage or current signal from the safe area to I/P converters, electrical valves and positioners located in the
hazardous areas. This barrier is designed to provide various inputs and outputs of voltage and current.
2. General Specification for KFD2-SCD2-EX2.LK
Model | KFD2-SCD2-EX2.LK |
General specifications | |
Signal type | Analog output |
Functional safety related parameters | |
Safety Integrity Level (SIL) | SIL 2 |
Supply | |
Connection | Power Rail or terminals 7+, 8-- |
Rated voltage Ur | 20 ... 35V DC |
Ripple | within the supply tolerance |
Rated current Ir | current output: ≤ 50 mA ; voltage output: ≤ 20 mA |
Power consumption | 1 W at 20 mA |
Input | |
Connection | terminals9+, 10-, 11+ |
Connection side | control side |
Voltage drop | optional current input: approx. 4 V at 20 mA |
Input current | ≤ 100 μA up to 50 °C (122 °F) at 10 V |
Limit | optional current input: Input current: approx. ≤40 mA optional voltage input: input voltage: 12 V DC |
Transmission range | optional current input: 0 ... 20 mA/optional voltage input: 0 ... 10 V |
Output | |
Connection side | field side |
Connection | terminals 1+, 2- |
Current | optional current output: 0 ... 20 mA/optional voltage output: ≤ 20 mA |
Load | optional current output: ≤ 850 Ω optional voltage output: output resistance ≤ 3 Ω |
Voltage | optional current output: 17 V at 20 mA/optional voltage output: 0 ... 10 V |
Transfer characteristics | |
Accuracy | 0.1 % |
Deviation | |
Influence of ambient temperature | ≤ ± 0.01 %/K |
After calibration | ≤ ± 0.1 % incl. non-linearity and hysteresis at 20 °C (68 °F) |
Rise time | < 10 ms |
Galvanic isolation | |
Input/power supply | functional insulation, rated insulation voltage 50 V AC |
Indicators/settings | |
Display elements | LED |
Labeling | space for labeling at the front |
Ambient conditions | |
Ambient temperature | -20 ... 60 °C (-4 ... 140 °F) |
3. Connection
4. Assembly
