KCD2-STC-Ex1.2O.ES SMART Transmitter Power Supply
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- 1-channel isolated barrier
- 24 V DC supply (Power Rail)
- Input for 2-wire SMART transmitters and current sources
- Signal splitter (1Â input and 2Â outputs)
- Dual output 0/4 mA … 20 mA or 0/1 V … 5 V
- Terminal blocks with test sockets
- Up to SIL 3 acc. to IEC/EN 61508
Description
Product Details
This isolated barrier is used for intrinsic safety applications.
The device supplies 2-wire transmitters in the hazardous area, and can also be used with current sources.
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.
Technical data
General specifications
| Signal type | Analog input |
Functional safety related parameters
| Safety Integrity Level (SIL) | SIL 3 | |
| Systematic capability (SC) | SC 3 |
Supply
| Connection | Power Rail or terminals 9+, 10- | |
| Rated voltage | Ur | 19 … 30 V DC |
| Ripple | within the supply tolerance | |
| Power dissipation | approx. 1.4 W at 20 mA transfer current, 250 Ω 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-: max. 500 Ω (BRAIN)
(250 Ω load) |
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| 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- |
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| Load |
channel 1: 0 … 500 Ω (20 mA)/> 1 MΩ (5 V)
channel 2: 0 … 500 Ω (20 mA)/> 1 MΩ (5 V) |
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| Output signal | 0/4 … 20 mA or 0/1 … 5 V | |
| Ripple | max. 50 µArms |
Transfer characteristics
| Deviation | Iout< 20 µA (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 | ||||
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| 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) |
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| Settling time | 6 ms | ||||
| Rise time/fall time | 2 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 | |
| Configuration | via DIP switches | |
| Labeling | space for labeling at the front |
Directive conformity
| Electromagnetic compatibility | |||||
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Conformity
| Electromagnetic compatibility |
NE 21:2012
EN 61326-3-2:2008 |
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| Degree of protection | IEC 60529:2001 | |
| Protection against electrical shock | UL 61010-1:2012 |
Ambient conditions
| Ambient temperature |
-20 … 60 °C (-4 … 140 °F)
extended ambient temperature range up to 70 °C (158 °F), refer to manual for necessary mounting conditions |
Mechanical specifications
| Degree of protection | IP20 | ||||||||||
| Connection | screw terminals | ||||||||||
| Mass | approx. 100 g | ||||||||||
| Dimensions | 12.5 x 124 x 114 mm (0.5 x 4.9 x 4.5 inch) (W x H x D), housing type A2 | ||||||||||
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| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 | ||||||||||
Data for application in connection with hazardous areas
| EU-type examination certificate | BASEEFA 13 ATEX 0077 X | |||||||||||||||||||
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| Supply | ||||||||||||||||||||
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| Equipment | terminals 1+, 2- | |||||||||||||||||||
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| Equipment | terminals 3+, 4- | |||||||||||||||||||
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| Output | ||||||||||||||||||||
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| Certificate | BASEEFA 13 ATEX 0078 X | |||||||||||||||||||
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| Galvanic isolation | ||||||||||||||||||||
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| Directive conformity | ||||||||||||||||||||
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International approvals
| UL approval | ||||||||
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| IECEx approval | ||||||||
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General information
| Note | Both output loads must be connected to ensure complete and correct operation within the technical specification. | |
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. |