Technical specifications of the KFD0-CS-Ex2.51P
| 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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| Nominal voltage | 4...35 VDC, loop powered | |
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Control chain |
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| Connection | terminals 12-, 11+; 8-, 10-, 9+ | |
| Voltage | 4 ... 35 V DC current | |
| Current | 0 ... 40 mA | |
| Power dissipation |
at 40 mA and U in < 22 V: 700 mW per channel at 40 mA and U in > 22 V: 1.2 W per channel |
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Excitation circuit |
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| Connection | terminals 1+, 2-; 4+, 5- | |
| Voltage |
for 4 V < U in < 24 V: ≥ U in - (0.37 x current in mA) - 1.0 for U in > 24 V: ≥ 21 V - (0.36 x current in mA) |
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| Short-circuit current | at U in > 24 V: ≤ 65 mA | |
| Transfer current | ≤ 40 mA | |
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Transmission characteristics |
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| Accuracy | 1% | |
| Deviation |
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After calibration | ≤ ±200 µA; incl. calibration, linearity, hysteresis, and field-side load variations up to 1 kΩ load and current ≤ 20 mA at 20 °C (68 °F) |
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The influence of ambient temperature | ≤ ± 2 µA/K at U in ≤ 20 V; ≤ ± 5 µA/K at U in > 20 V |
| Rise time | ≤ 5 ms with bounce from 4 ... 20 mA and U in < 24 V | |
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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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Indicators/settings |
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| 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 21:2012 EN 61326-3-2:2008 |
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| 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 ... 70 °C (-4 ... 158 °F) | |
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Mechanical characteristics |
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| Degree of protection | IP20 | |
| Connection | screw terminals | |
| weight | approx. 100 g | |
| Dimensions | 20 x 107 x 115 mm (0.8 x 4.2 x 4.5 in) (W x H x D), case type B1 | |
| 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 98 ATEX 7343 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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Voltage | 25.2 V |
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Current | 93 mA |
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Power | 585 MW |
| Control chain |
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Maximum safe voltage | 250 V rms (Note: Nominal voltage may be lower.) |
| Excitation circuit |
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Maximum safe voltage | 250 V rms (Note: Nominal voltage may be lower.) |
| Certificate | FIDI 22 ATEX 0001X | |
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Marking |
II 3G Ex ec IIC T4 Gc
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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 |
| 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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| FM approval |
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Control drawing | 116-0437 |
| UL approval | E106378 | |
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Control drawing | 116-0438 (cULus) |
| IECEx certification |
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IECEx Certificate |
IECEx BAS 05.0004X IECEx CML 19.0040X |
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IECEx marking |
[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I Ex ec IIC T4 Gc |