1. General Introduction
It transfers the analog input signal to the safe area as two isolated output signals. Bi-directional communication is supported for SMART transmitters that use current modulation to transmit data and voltage modulation to receive data.The output is selected as a current source, current sink, or voltage source via switches. Test sockets for the connection of HART communicators are,integrated into the terminals of the device.
2. General Specification for KCD2-STC-EX1.2O
Model | KCD2-STC-EX1.2O |
General specifications | |
Signal type | Analog input |
Functional safety related parameters | |
Safety Integrity Level (SIL) | SIL 2 |
Supply | |
Connection | Power Rail or terminals 9+, 10- |
Rated voltage Ur | 18 ... 30 V DC |
Ripple | within the supply tolerance |
Power dissipation | approx. 1.4 W at 20 mA transfer current, 250 in both outputs |
Power consumption | 2 W |
Input | |
Connection side | field side |
Connection | terminals 1+, 2- (sink); 3+, 4- (source) |
Input signal | 0/4 ... 20 mA |
Voltage drop | terminals 3, 4: ≤6.1 V at 20 mA |
Short-circuit current | terminals 1+, 2-: 25 mA |
Input resistance | terminals 1+, 2-: ≤500 (250 load) |
Available voltage | terminals 1+, 2-: ≥16 V at 20 mA , ≥18.5 V at 4 mA |
Output | |
Connection side | control side |
Connection | source: terminals 5-, 6+; 7-, 8+ sink: terminals 5+, 6-, 7+, 8- |
Load | channel 1: 0 ... 500 (20 mA)/> 1 M(5 V) channel 2: 0 ... 500 (20 mA)/> 1 M(5 V) |
Output signal | 0/4 ... 20 mA or 0/1 ... 5 V |
Ripple | ≤50 A rms |
Transfer characteristics | |
Deviation | Iout < 20 A (0.1 %); Vout < 10 mV (0.2 %) incl. calibration, linearity, hysteresis and fluctuation of supply voltage, at 20 °C (68 °F), 0/4 ... 20 mA, 0/1 ... 5 V |
Influence of ambient temperature | current output: 0.25 A/K voltage output: 80 V/K |
Frequency range | field side into the control side: bandwidth with 0.5 Vpp signal 0 ... 6 kHz (-3 dB) control side into the field side: bandwidth with 0.5 Vpp signal 0.3 ... 6 kHz (-3 dB) |
Settling time | 6 ms |
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 |
Control elements | DIP-switch |
Directive conformity | |
Electromagnetic compatibility | |
Directive 2014/30/EU | EN 61326-1:2013 (industrial locations) |
Conformity | |
Electromagnetic compatibility | NE 21:2012 EN 61326-3-2:2008 |
Degree of protection | IEC 60529:2001 |
Protection against electrical shock | UL 61010-1:2012 |
Ambient conditions | |
Ambient temperature | -20 ... 60 °C (-4 ... 140 °F) |
3. Connection
4. Configuration
