Technical specifications of the KCD2-SCS-Ex2.SP
| Main Features | ||
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| Signal type | Analog input/analog output | |
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Parameters related to functional safety |
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| Safety Integrity Level (SIL) | SIL 2 | |
| Systematic ability (SC) | SC 3 | |
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Supply |
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| Connection | Power bus or terminals 9+, 10- | |
| Nominal voltage | 19 ... 30 V DC current | |
| pulsation | Max. 10% | |
| Rated current | Max. 88 mA at 24 V | |
| Power dissipation | Max 1.4 W | |
| Power consumption | Max. 2.1 W | |
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Analog input |
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| Number of channels | 2 | |
| Suitable field devices | 2-wire SMART sensors | |
| Signal | 0/4 ... 20 mA, limited to approx. 30 mA | |
| Excitation circuit | terminals 1+, 2-, 3+, 4- | |
| Available voltage |
min. 15 V at 20 mA min. 18 V at 4 mA |
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| Control chain | terminals 5-, 6+; 7-, 8+ | |
| Input voltage |
The voltage at the terminals is 10 ... 30 V. If the current comes from a source > 24 V, a series resistance of ≥ (V - 24)/0.02 Ohm is required, where V is the source voltage. The maximum resistance value is (V - 10)/0.02 Ohm. (sink outlet) |
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| Load | Max 350 Ohm (Source Output) | |
| pulsation | 20 mV eff. | |
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Analog output |
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| Number of channels | 2 | |
| Suitable field devices | SMART I/P converters (positioners), local displays | |
| Signal | 0/4 ... 20 mA, limited to approx. 30 mA | |
| Excitation circuit | terminals 1+, 2-, 3+, 4- | |
| Load | Max. 650 Ohm | |
| Voltage | min. 13 V at 20 mA | |
| pulsation | 20 mV rms , on all signal terminals | |
| Control chain | terminals 5-, 6+; 7-, 8+ | |
| Voltage drop | Max 6 V | |
| Line fault detection | > 100 kOhm at max 30 V, with external wiring open | |
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Transmission characteristics |
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| Deviation | Max. 20 µA incl. calibration, linearity, hysteresis, loads, and supply voltage variations | |
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The influence of ambient temperature | < 2 µA/K (-40...70 °C (-40...158 °F)) |
| Frequency range |
from the field side to the control side: bandwidth with 0.5 V pp signal 0 ... 3 kHz (-3 dB) control side field side: bandwidth with 0.5 V pp signal 0 ... 3 kHz (-3 dB) |
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| Settlement time | Max. 200 ms | |
| Rise time/fall time | Max. 100 ms (10 ... 90%) | |
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Galvanic isolation |
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| Excitation circuit/control circuit | Basic insulation according to IEC/EN 61010-1, rated insulation voltage 300 V eff. | |
| Control circuit/control circuit | functional insulation, rated voltage: 50 V | |
| Field circuit/power supply | reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V eff. | |
| Control/Power | Basic insulation according to IEC/EN 61010-1, rated insulation voltage 300 V eff. | |
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Indicators/settings |
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| Display elements | LED | |
| Configuration | via DIP switches | |
| Marking | marking space at the front | |
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Compliance with the directive |
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| Electromagnetic compatibility |
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Directive 2014/30/EU | EN 61326-1:2013 (industrial premises) |
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Correspondence |
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| Electromagnetic compatibility |
NE 21:2017 EN 61326-3-2:2018 |
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| Degree of protection | IEC 60529 | |
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Environmental conditions |
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| Ambient temperature | -40...70 °C (-40...158 °F) | |
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Mechanical characteristics |
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| Degree of protection | IP20 | |
| Connection | spring terminals | |
| weight | approx. 115 g | |
| Dimensions | 12.5 x 124 x 114 mm (0.5 x 4.9 x 4.5 in) (W x H x D), case type A2 | |
| Installation | on a 35 mm DIN rail in accordance with EN 60715:2001 | |
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Data for use in hazardous areas |
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| EU Type Examination Certificate | UL 22 ATEX 2786 X | |
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Marking |
 II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
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Exit | Ex ia, Ex iaD |
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Voltage | 25.2 V |
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Current | 100 mA |
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Power | 630 MW |
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Internal capacity | 1.05 nF |
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Internal inductance | 0 |
| Supply |
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Maximum safe voltage | 250 V ( Attention! The nominal voltage may be lower.) |
| Entrance |
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Maximum safe voltage | 250 V ( Attention! The nominal voltage may be lower.) |
| Certificate | UL 22 ATEX 2787 X | |
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Marking |
II 3G Ex ec IIC T4 Gc [device in zone 2]
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| Galvanic isolation |
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Excitation circuit/control circuit | safe electrical insulation in accordance with IEC/EN 60079-11, peak voltage 375 V |
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Field circuit/power supply | safe electrical insulation in accordance with IEC/EN 60079-11, peak voltage 375 V |
| Compliance with the directive |
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Directive 2014/34/EU | EN IEC 60079-0:2018, EN 60079-11:2012, EN IEC 60079-7:2015+A1:2018 |
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International certificates |
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| IECEx certification |
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IECEx Certificate | IECEx ULD 22.0020X |
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IECEx marking |
[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I Ex ec IIC T4 Gc |