Switch Amplifier WE 77/Ex-1 115V Successor KFA5-SR2-Ex1.W Connection Input EEx ia IIC 1- 2+ 1-channel Control circuit EEx ia IIC 115 V AC supply voltage 1- 2+ Reversible mode of operation Lead breakage (LB) monitoring 1- 2+ 1 relay output with 1 changeover contact 1- 2+ 3 4 5 WE 77/Ex-1 115V + Testing the bridges Function LB 1 The transformer isolated barrier transfers digital signals into hazardous areas. Sensors per EN 60947-5-6 & (NAMUR) or mechanical contacts may =1 be used as transmitters. +- The control circuit is monitored for lead red breakage (LB). ~ 8 9 7 10 11~12 Output Power supply Composition Refer toGeneral Notes Relating to Pepperl+Fuchs Product Informatio. Pepperl+Fuchs Group USA: +1 330 486 0002 Germany: +49 621 776 2222 Singapore: +65 6779 9091 1 www.pepperl-fuchs.com pa-info us.pepperl-fuchs.com pa-info de.pepperl-fuchs.com pa-info sg.pepperl-fuchs.com Release date 2016-06-16 14:16 Date of issue 2016-06-16 129199 eng.xml Hazardous area Safe areaTechnical data WE 77/Ex-1 115V Supply Connection terminals 11, 12 Rated voltage U 103.5 ... 126 V AC , 45 ... 65 Hz n Power dissipation 1.6 W Power consumption approx. 2.3 VA Input Connection terminals 1-, 2+ Rated values acc. to EN 60947-5-6 (NAMUR), see system description for electrical data 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 Pulse/Pause ratio 0.5 ms / 0.5 ms Line fault detection breakage I 0.1 mA Output Connection terminals 7, 8, 9 Output signal relay Contact loading 253 V AC/2 A/500 VA/cos min. 0,7 125 V AC/4 A/500 VA cos min. 0,7 40 V DC/2 A/80 W ohmic load Energized/De-energized delay approx. 10 ms / approx. 20 ms 7 Mechanical life 10 switching cycles Transfer characteristics Switching frequency < 10 Hz Electrical isolation Output/power supply basic insulation according to IEC 61140, rated insulation voltage 300 V eff Output/Output functional insulation acc. to EN 50178, rated insulation voltage 300 V eff Directive conformity Electromagnetic compatibility Directive 2014/30/EU EN 61326-1:2013 (industrial locations) Low voltage Directive 2014/35/EU EN 61010-1:2010 Conformity Degree of protection IEC 60529 Ambient conditions Ambient temperature -25 ... 60 C (-13 ... 140 F) Mechanical specifications Degree of protection IP20 Mass approx. 390 g Dimensions 40 x 104 x 110 mm (1.6 x 4.1 x 4.3 inch) Data for application in connection with Ex-areas EC-Type Examination Certificate PTB 02 ATEX 2065 Group, category, type of protection II (1)GD EEx ia IIC circuit(s) in zone 0/1/2 Voltage U 13.4 V DC o Current I 31 mA o Power P 145 mW (trapezoid characteristic curve) o Supply Maximum safe voltage U 126.5 V AC (Attention The rated voltage can be lower.) m Output Maximum safe voltage U 253 V AC (Attention The rated voltage can be lower.) m Electrical isolation Input/Output safe galvanic isolation acc. to EN 50020, voltage peak value 375 V Input/power supply safe galvanic isolation acc. to EN 50020, voltage peak value 375 V Directive conformity Directive 2014/34/EU EN 60079-0:2012+A11:2013 , EN 60079-11:2012 General information Supplementary information EC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see www.pepperl- fuchs.com. Refer toGeneral Notes Relating to Pepperl+Fuchs Product Informatio. Pepperl+Fuchs Group USA: +1 330 486 0002 Germany: +49 621 776 2222 Singapore: +65 6779 9091 2 www.pepperl-fuchs.com pa-info us.pepperl-fuchs.com pa-info de.pepperl-fuchs.com pa-info sg.pepperl-fuchs.com Release date 2016-06-16 14:16 Date of issue 2016-06-16 129199 eng.xml