KFU8-SR-Ex2.W, Switch Amplifier
Switch Amplifier KFU8-SR-Ex2.W 2-channel isolated barrier Universal usage at different power supplies Dry contact or NAMUR inputs Relay contact output Line fault detection (LFD) Reversible mode of operation Up to SIL 2 (SC 3) acc. to IEC/EN 61508 This isolated barrier is used for intrinsic safety applications. It transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous area to a safe area. The proximity sensor or switch controls a form C changeover relay contact for the safe area load. The normal output state can be reversed using switches S1 and S2. Switch S3 is used to enable or disable line fault detection of the field circuit. During an error condition, the relays revert to their de-energized state and the LEDs indicate the fault according to NAMUR NE44. Datasheet excerpt: Technical data of KFU8-SR-Ex2.W General specifications Signal type Digital Input Functional safety related parameters Safety Integrity Level (SIL) SIL 2 Systematic capability (SC) SC 3 Supply Connection terminals 14, 15 Rated voltage 19 ... 30 V DC / 90 ... 253 V AC 50 ... 60 Hz Power dissipation/power consumption ≤ 1.3 W / ≤ 1.3 W ; 3.6 VA Input Connection side field side Connection terminals 1+, 2+, 3-; 4+, 5+, 6- Rated values acc. to EN 60947-5-6 (NAMUR) Open circuit voltage/short-circuit current approx. 8 V DC / approx. 8 mA Switching point/switching hysteresis 1.2 ... 2.1 mA / approx. 0.2 mA Line fault detection breakage I ≤ 0.1 mA , short-circuit I > 6 mA Pulse/Pause ratio min. 20 ms / min. 20 ms Output Connection side control side Connection output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12 Output I, II signal ; relay Contact loading 250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 40 V DC/2 A resistive load Minimum switch current 2 mA / 24 V DC Energized/De-energized delay approx. 20 ms / approx. 20 ms Mechanical life 107 switching cycles Transfer characteristics Switching frequency ≤ 10 Hz Galvanic isolation Input/Output reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Input/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Output/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Output/Output reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Indicators/settings Display elements LEDs Control elements DIP switch Configuration via DIP switches Labeling space for labeling at the front Directive conformity Electromagnetic compatibility Directive 2014/30/EU EN 61326-1:2013 (industrial locations) Low voltage Directive 2014/35/EU EN 61010-1:2010+A1:2019+A1:2019/AC:2019 Conformity Electromagnetic compatibility NE 21:2017 , EN 61326-3-1:2017 , EN IEC 61326-3-2:2018 , EN IEC 61326-1:2021 (industrial locations) Degree of protection IEC 60529:1989+A1:1999+A2:2013 Input EN 60947-5-6:2000 Ambient conditions Ambient temperature -40 ... 60 °C (-40 ... 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. 150 g Dimensions 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2 Height 119 mm Width 20 mm Depth 115 mm Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001 Data for application in connection with hazardous areas EU-type examination certificate FIDI 22 ATEX 0029 X Marking II 3(1)G Ex ec nC [ia Ga] IIC T4 Gc II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I Input Ex ia Voltage 10.5 V Current 13 mA Power 34 mW (linear characteristic) Supply Maximum safe voltage 253 V AC (Attention! Um is no rated voltage.) Output Maximum safe voltage 253 V AC (Attention! The rated voltage can be lower.) Galvanic isolation Input/input not available Input/Output safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V Input/power supply safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V Directive conformity Directive 2014/34/EU EN IEC 60079-0:2018 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012 ,EN IEC 60079-15:2019 International approvals UL approval E106378 Control drawing 116-0489 Contact loading 250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 30 V DC/2 A resistive load IECEx approval IECEx certificate IECEx FIDI 22.0003X IECEx marking Ex ec nC [ia Ga] IIC T4 Gc , [Ex ia Da] IIIC , [Ex ia Ma] I General information Supplementary information Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. Classifications System Classcode ECLASS 13.0 27210121 ECLASS 12.0 27210121 ECLASS 11.0 27210121 ECLASS 10.0.1 27210121 ECLASS 9.0 27210121 ECLASS 8.0 27210121 ECLASS 5.1 27210121 ETIM 9.0 EC001485 ETIM 8.0 EC001485 ETIM 7.0 EC001485 ETIM 6.0 EC001485 ETIM 5.0 EC001485 UNSPSC 12.1 32101514