Technical specifications of the KFD2-VR4-Ex1.26
| Main Features | ||
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| Signal type | Analog input | |
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Parameters related to functional safety |
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| Safety Integrity Level (SIL) | SIL 2 | |
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Supply |
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| Connection | Power bus or terminals 11+, 12- | |
| Nominal voltage | 19 ... 30 V DC current | |
| pulsation | within delivery tolerances | |
| Power dissipation | ≤ 1.2 W | |
| Power consumption | ≤ 1.6 W | |
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Entrance |
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| Connection side | side of the field | |
| Connection | terminals 4 (common), 1, 3 and 5 (power -), 2 and 6 (signal -) | |
| Input impedance | 10 kOhm terminals 4 (common), 6-/2- | |
| Output rated operating current |
terminals 4 (common), 5-: > 10 mA at -21 V or > 20 mA at -18 V terminals 4 (common), 1-: 5.3 mA ±0.4 mA at -10 V terminals 4 (common), 3-: 3.6 mA ±0.7 mA at -10 V, 20 °C (68 °F) |
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| Transmission range | -20...0 V | |
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Exit |
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| Connection side | control side | |
| Connection | terminals 7-, 8+ | |
| Voltage | -20...0 V | |
| Load | ≥ 9 kOhm (3-wire sensor), ≥ 2 kOhm (2-wire sensor) | |
| Output impedance |
24 Ohm typical, 27 Ohm maximum Since this is much lower than the through-impedance of a Zener barrier, specifications for monitors intended for use without a barrier may be required. Please follow the monitor manufacturer's recommendations. |
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Transmission characteristics |
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| Cutoff frequency |
10 kHz (-0.1 dB) 20 kHz (-1 dB) |
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| Deviation | DC transmission error (at 10 kOhm load) < 10 mV | |
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After calibration |
The additional accuracy with AC superposition is ±5 mV at 20 °C (68 °F) anywhere in the range, provided that the AC component of the input voltage is not excessive, e.g. - square waves (0 ... 20 kHz): 5 V peak-to-peak - sine waves (0 ... 20 kHz): acceptable full range 20 V peak-to-peak (= peak acceleration 100 g at 100 mV/g). |
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The influence of ambient temperature | (< 100 ppm range)/K at any point in the range |
| Time delay relative to input | 7.1 ±0.3 μs | |
| pulsation |
in the 200 kHz band < 20 mV rms in the 20 kHz band < 3 mV rms |
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Galvanic isolation |
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| Output/Power | 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 21:2017 EN IEC 61326-3-2:2018 |
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| Degree of protection | IEC 60529 | |
| Protection against electric shock | UL 61010-1 | |
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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. 125 g | |
| Dimensions | 20 x 119 x 115 mm (0.8 x 4.7 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 02 ATEX 7206 | |
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Marking |
 II (1)G [Ex ia Ga] IIC , II (1)D [Ex ia Da] IIIC
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Entrance | Ex ia Ga, Ex ia Da |
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Voltage | -26.4 V |
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Current | 90 mA |
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Power | 570 MW |
| Supply |
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Maximum safe voltage | 253 V (Caution! Nominal voltage may be lower.) |
| Exit |
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Maximum safe voltage | 253 V (Caution! Nominal voltage is lower.) |
| EU Type Examination Certificate | DMT 01 ATEX E 133 | |
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Marking |
I (M1) [Ex ia] I
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| Certificate | TUV 99 ATEX 1499 X | |
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Marking |
II 3G Ex nA II T4
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| Galvanic isolation |
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Input, output | Safe galvanic isolation in accordance with IEC 60079-11, peak voltage 375 V |
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Input/Power | Safe galvanic isolation in accordance with IEC 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, EN 50303:2000 |
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International certificates |
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| UL approval |
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Control drawing | 116-0316 (cULus) |
| IECEx certification |
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IECEx Certificate |
IECEx BAS 05.0078 IECEx BAS 10.0085X |
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IECEx marking |
[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I Ex nA II T4 Gc |