Technical data of the KFD2-STC4-Ex1.2O
| Main Features | ||
|---|---|---|
| Signal type | Analog input | |
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Parameters related to functional safety |
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| Safety Integrity Level (SIL) | SIL 3 | |
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Supply |
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| Connection | Power bus or terminals 14+, 15- | |
| Nominal voltage | 20 ... 35 V DC | |
| pulsation | within delivery tolerances | |
| Power dissipation | 1.8 W | |
| Power consumption | 2.4 W | |
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Entrance |
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| Connection side | side of the field | |
| Connection | terminals 1+, 2-, 3 or 5-, 6+ | |
| Input signal | 0/4...20 mA | |
| Open circuit voltage/short circuit current | terminals 1+, 3-: 22.7 V / 38 mA | |
| Voltage drop | terminals 5, 6: ≤ 2.4 V at 20 mA | |
| Input impedance |
terminals 2-, 3: max 76 Ohm terminals 1+, 3: max 500 Ohm (load 250 Ohm) |
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| Available voltage | terminals 1+, 3: ≥ 16 V at 20 mA | |
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Exit |
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| Connection side | control side | |
| Connection | terminals 7-, 8+, 9; 10-, 11+, 12 | |
| Load | 0 ... 550 Ohm at 20 mA | |
| Output signal | 0/4 ... 20 mA (overload > 25 mA) | |
| pulsation | Max. 50 µA RMS | |
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Transmission characteristics |
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| Deviation |
at 20 °C (68 °F), 0/4 ... 20 mA ≤ 10 µA incl. calibration, linearity, hysteresis, loads and supply voltage variations |
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The influence of ambient temperature | 0.25 μA/K |
| Frequency range |
from the field side to the control side: bandwidth with 0.5 V pp signal 0 ... 7.5 kHz (-3 dB) control side field side: bandwidth with 0.5 V pp signal 0.3 ... 7.5 kHz (-3 dB) |
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| Settlement time | 200 µs | |
| Rise time/fall time | 20 µs | |
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Galvanic isolation |
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| Output/Power | functional insulation, rated insulation voltage 50 V AC | |
| Exit/Exit | functional insulation, rated insulation voltage 50 V AC | |
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Indicators/settings |
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| Display elements | LED | |
| 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 21:2011 | |
| Degree of protection | IEC 60529:2001 | |
| Protection against electric shock | UL 61010-1:2012 | |
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Environmental conditions |
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| Ambient temperature | -20 ... 60 °C (-4 ... 140 °F) | |
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Mechanical characteristics |
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| Degree of protection | IP20 | |
| Connection | screw terminals | |
| weight | approx. 200 g | |
| Dimensions | 20 x 124 x 115 mm (0.8 x 4.9 x 4.5 in), (W x H x D), case type B2 | |
| 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 | BAS 99 ATEX 7060 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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Entrance | [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I |
| Supply |
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Maximum safe voltage | 250 V (Caution! Nominal voltage may be lower.) |
| Equipment | terminals 1+, 3- | |
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Voltage | 25.4 V |
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Current | 86.8 mA |
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Power | 551 MW |
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Internal capacity | 12 nF |
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Internal inductance | 0 mH |
| Equipment | terminals 2-, 3 | |
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Current | 74 mA / 115 mA |
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Current | 115 mA |
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Voltage | 3.5 V |
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Current | 74 mA |
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Power | 64 MW |
| Equipment | terminals 1+, 2 / 3- | |
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Voltage | 30 V |
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Current | 115 mA |
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Voltage | 25.4 V |
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Current | 115 mA |
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Power | 584 MW |
| Equipment | terminals 5-, 6+ | |
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Voltage | 30 V |
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Current | 115 mA |
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Voltage | 8.7 V |
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Current | 0 mA |
| Exit |
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Maximum safe voltage | 250 V (Caution! Nominal voltage may be lower.) |
| Certificate | TUV 99 ATEX 1499 X | |
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Marking |
II 3G Ex nA II T4 [device in zone 2]
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| Galvanic isolation |
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Input, output | safe electrical insulation in accordance with IEC/EN 60079-11, peak voltage 375 V |
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Input/Power | 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 60079-0:2012+A11:2013, EN 60079-11:2012, EN 60079-15:2010 |
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International certificates |
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| UL approval |
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Control drawing | 116-0428 (cULus) |
| IECEx certification |
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IECEx Certificate |
IECEx BAS 04.0016X IECEx CML 15.0055X |
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IECEx marking |
[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I Ex nA IIC T4 Gc |