447 subject to reasonable modifications due to technical advances. copyright pepperl+fuchs, printed in germany pepperl+fuchs group ?tel.: germany (06 21) 7 76-0 ?usa (330) 4 25 35 55 ?singapore 7 79 90 91 ?internet http://www.pepperl- fuchs.com issue date 19.9.00 zener barriers - operating instructions how to select the correct barrier 7. the following points have to be clarified if special field devices are used. if the field device is a 4-20 ma transmitter: what load in ohms can be connected to the transmitter so that it can at- tain 20 ma as before? if the field device is a current / pressure converter: what load can be connected to the controller card so that it can attain 20 ma as before? if the field device is a transmitter: how high is the load in the safe area? (typically, resistances of up to 250 ohm are used in the controller.). new: in the near future, a barrier will be available with a replaceable back-up fuse. the introduction of a replaceable back-up fuse ahead of the integrated fuse provides protection against faults which could occur during the commissioning of the system. it is always arranged that the outer fuse will respond before the inner, inn- accessible fuse. the fuses used are specially intended for use on barriers. z... type channels max. series resist- ance u in at 10 a u in max fuse rating external fuse fuse supplied by littlefuse ohm v v ma ma z715.f 1 106 13 13.6 100 63 217,063 z728.f 1 327 27 28 80 50 217,05 z728.h.f 1 250 27 28 80 50 217,05 z765.f 2 106 106 13 13 13.6 13.6 100 100 63 63 217,063 z779.f 2 327 327 27 27 28 28 80 80 50 50 217,05 z779.h.f 2 250 250 27 27 28 28 80 80 50 50 217,05 z787.f 2 327 36 + 0.9v 27 27 28 28 80 80 50 50 217,05 z787.h.f 2 250 25+ 0.9v 27 27 28 28 80 80 50 50 217,05 z960.f 2 64 64 6.5 6.5 9.5 9.5 80 80 50 50 217.05 z961.f 2 106 106 6.5 6.5 8.1 8.1 160 160 100 100 217.1 z966.f 2 166 166 10 10 11.7 11.7 100 100 63 63 217.063
448 issue date 19.9.00 subject to reasonable modifications due to technical advances. copyright pepperl+fuchs, printed in germany pepperl+fuchs group ?tel.: germany (06 21) 7 76-0 ?usa (330) 4 25 35 55 ?singapore 7 79 90 91 ?internet http://www.pepperl- fuchs.com zener barriers - operating instructions how to select the correct barrier type nominal data see circuit diagram no. circuit diagram hazardous area safe area connections connections + ve - ve a.c. v ? z705 z710 z710.cl z805 z810 z810.cl z905 z910 5 5 10 10 10 10 10 50 50 50 1), 2) 3) 1), 2) 3) 1), 2) 1) 2) 3) 4) 5) 6) 7) z715 z715.cl z715.1k z815 z815.cl z815.1k z915 z915.1k 15 15 15 15 15 100 100 100 1k 1k 1), 2) 3) 1), 2) 3) 1), 2) z722 z722.cl z728 z728.cl z822 z822.cl z828 z828.cl z928 22 22 28 28 28 150 150 300 300 300 1), 2) 1), 2) 1), 2) 1), 2) 3) z755 z855 5 10 4), 5) z955 5 10 6) z757 z857 z961 z961.h 7 7 9 9 9 9 10 10 100 100 360 360 4), 5) 6) 6) z764 z864 12 12 1k 1k 4), 5) z964 12 12 1k 1k 6) z765 z865 15 15 100 100 4), 5) z966 12 12 150 150 6) z966.h 12 12 75 75 6) z772 z872 22 22 150 150 4), 5) +ve type 18 27 cl x3 -ve type 18 27 cl x3 ac type 18 27 x3 x3 +ve type 18 45 27 3 6 x3 x3 -ve type 18 45 27 3 6 x3 x3 ac type 18 45 27 3 6 x3 x3 x3 x3 ac type all diodes are turned 180 ? for the -ve- version. 18 45 27 3 6 x3 x3
449 subject to reasonable modifications due to technical advances. copyright pepperl+fuchs, printed in germany pepperl+fuchs group ?tel.: germany (06 21) 7 76-0 ?usa (330) 4 25 35 55 ?singapore 7 79 90 91 ?internet http://www.pepperl- fuchs.com issue date 19.9.00 zener barriers - operating instructions how to select the correct barrier see note 2 ex-characteristics for [eex ia] iic max. end-to- end resist- ance u in bei 10 ? u in max fuse rating u z (v) r min ( ? ) i k (ma) p max (w) c max (?) l max (mh) l/r ratio ? vvma 4.94 4.98 9.56 9.94 9.56 9.8 9.8 49 49 49 504 499 195 203 195 0.62 0.61 0.47 0.50 0.47 1800 1800 3 3 3 0.15 0.15 0.95 0.95 0.95 60 60 75 75 75 18.18 18.18 55 55 62 +2v 0.9 (1 ?) 0.9 (1 ?) 6.5 6.5 6.5 4.8 4.7 8.9 9.3 8.9 250 250 100 100 100 14.7 15.0 14.7 14.7 15 98 98 98 980 980 150 153 150 15 15 0.55 0.57 0.55 0.06 0.06 0.75 0.75 0.75 0.75 0.75 1.5 1.5 1.5 150 150 65 65 65 590 590 106 106 113 +2v 1024 1024 13.0 13.0 13.0 13.0 13.0 13.6 14.0 13.6 13.6 14.0 100 100 100 100 100 22 22 28 28 28 147 147 301 301 301 150 150 93 93 93 0.83 0.83 0.65 0.65 0.65 0.26 0.26 0.13 0.13 0.13 1.5 1.5 4.2 4.2 4.2 43 43 55 55 55 166 181 +2v 327 342 +2v 327 19.0 19.0 27.0 27.0 26.0 20.1 20.1 28.0 28.0 27.6 50 50 50 50 50 a1 a2 b 4.94 4.94 4.94 9.8 9.8 4.9 504 504 1008 0.62 0.62 1.24 1800 1800 1800 0.15 0.15 0.037 60 60 23 18.18 18.18 0.9 (1?) 0.9 (1?) 4.8 4.8 250 250 a1 a2 b c 4.89 4.89 4.89 9.78 9.8 9.8 4.9 19.6 499 499 998 499 0.61 0.61 1.22 1.22 1800 1800 1800 3 0.15 0.15 0.037 0.15 60 60 23 30 18.18 18.18 ? 0.9 (1?) 0.9 (1?) 4.7 4.7 250 250 a1 a2 b a1 a2 b c a1 a2 b 7.2 7.2 7.2 8.7 8.7 8.7 17.4 8.7 8.7 17.35 9.8 9.8 4.9 98 98 49 196 352.8 352.8 176.4 729 729 1458 89 89 178 89 25 25 50 1.3 1.3 2.6 0.19 0.19 0.39 0.39 0.05 0.05 0.1 14 14 14 5 5 5 0.5 5 5 0.46 0.7 0.7 0.17 4.5 4.5 1.2 4.5 54.5 54.5 14.35 29 29 11 173 173 68 86 589 589 238 15.5 15.5 106 106 380 380 6.0 6.0 6.5 6.5 6.5 6.5 6.9 6.9 8.1 8.1 8.1 8.1 200 200 100 100 50 50 a1 a2 b 11.6 11.6 11.6 980 98 490 12 12 24 0.03 0.03 0.06 1.6 1.6 1.6 230 230 60 910 910 350 1033 1033 10.0 10.0 11.0 11.0 50 50 a1 a2 b c 12 12 12 24 980 980 490 1960 12 12 24 12 0.04 0.04 0.08 0.08 1.6 1.6 1.6 0.2 230 230 60 230 910 910 350 460 1033 1033 10.0 10.0 11.7 11.7 50 50 a1 a2 b 14.7 14.7 14.7 98 98 49 150 150 300 0.55 0.55 1.1 0.75 0.75 0.75 1.5 1.5 0.35 65 65 23 106 106 13.0 13.0 13.6 13.6 100 100 a1 a2 b c 12 12 12 24 147 147 73.5 294 82 82 164 82 0.24 0.24 0.48 0.48 1.6 1.6 1.6 0.2 5.2 5.2 1. 5.2 143 143 53 71 166 166 10.0 10.0 11.7 11.7 50 50 a1 a2 b 12 12 24 73.5 73.5 36.5 163 163 327 0.49 0.49 0.98 1.5 1.5 0.18 1.34 1.34 0.312 72 72 30 82 82 10.0 10.0 11.7 11.7 100 100 a1 a2 b 22 22 22 147 147 73.5 150 150 300 0.83 0.83 1.66 0.26 0.26 1.5 1.5 43 43 166 166 19.0 19.0 20.1 20.1 50 50 no approval for iic
450 issue date 19.9.00 subject to reasonable modifications due to technical advances. copyright pepperl+fuchs, printed in germany pepperl+fuchs group ?tel.: germany (06 21) 7 76-0 ?usa (330) 4 25 35 55 ?singapore 7 79 90 91 ?internet http://www.pepperl- fuchs.com zener barriers - operating instructions how to select the correct barrier type nominal data see circuit dia- gram no. circuit diagram hazardous area safe area connections connections + ve - ve a.c. v ? z778 z779 z779.h z878 z879 z879.h 28 28 28 28 28 28 600 600 300 300 240 240 4), 5) 4), 5) 4), 5) 8) 9) 10) 11) z796 z896 26.6 20.5 320 415 4), 5) z788 + z788.h z788.r z788.r.h z888 + z888.h z888.r z888.r.h 28 10 28 10 28 10 300 50 240 50 240 50 4), 5) 4), 5) 7) 4), 5) z786 z886 28 28 diode diode 8) z787 z787.h z887 z887.h 28 28 28 28 300 diode 240 diode 9) 9) z960 10 10 50 50 10) z965 15 15 100 100 10) z967 17 17 120 120 10) z972 22 22 300 300 10) z978 28 28 620 620 10) all diodes are turned 180 ? for the -ve- version. 18 45 27 3 6 x3 x3 all diodes are turned 180 ? for the -ve- version. 18 45 27 3 6 x3 x3 18 45 27 3 6 x3 18 45 27 3 6
451 subject to reasonable modifications due to technical advances. copyright pepperl+fuchs, printed in germany pepperl+fuchs group ?tel.: germany (06 21) 7 76-0 ?usa (330) 4 25 35 55 ?singapore 7 79 90 91 ?internet http://www.pepperl- fuchs.com issue date 19.9.00 zener barriers - operating instructions how to select the correct barrier see note 2 ex-characteristics for [eex ia] iic max. end-to- end resist- ance u in at 10 ? u in max fuse rating u z (v) r min ( ? ) i k (ma) p max (w) c max (?) l max (mh) l/r ratio ? vvma a1 a2 b a1 a2 b a1 a2 b 28 28 28 28 28 28 28 28 607 607 303.5 301 301 150.5 235 235 46 46 92 93 93 186 119 119 0.32 0.32 0.65 0.65 0.65 1.3 0.83 0.83 0.13 0.13 0.13 0.13 0.13 0.13 0.13 16 16 4.2 4.2 4.2 2.55 2.55 103 103 40 55 55 42 42 646 646 327 327 250 250 27.0 27.0 27.0 27.0 27.0 27.0 28.0 28.0 28.0 28.0 28.0 28.0 50 50 50 50 80 80 a1 a2 b 26.6 20.5 23.9 314 407 177.25 85 50 135 0.57 0.26 0.81 0.15 0.3 0.15 5 14 1.9 60 132 34 340 437 24.0 18.0 25.1 19.5 50 50 a1 a2 a1 a2 b b a1 a2 b 28 9.56 28 9.56 28 12.14 28 9.56 28 301 49 235 49 40.54 42.14 235 49 40.54 93 195 119 195 314 288 119 195 314 0.65 0.47 0.83 0.47 1 0.87 0.83 0.47 1 0.13 3.0 0.13 3 0.13 0.13 0.13 3 0.13 4.2 0.95 2.55 0.95 0.27 0.36 2.55 0.95 0.27 55 75 42 75 27.7 25 42 75 27.7 327 64 250 64 250 64 27.0 6.5 27.0 6.5 27.0 28.0 9.1 28.0 9.1 28.0 9.1 50 50 80 80 80 80 a1 a2 b 28 28 28 0.13 0.13 0.13 36 + 0.9 v 36 + 0.9 v 27.0 27.0 28.0 28.0 50 50 a1 a2 b a1 a2 b 28 28 28 28 28 28 301 301 235 235 93 93 119 119 0.65 0.65 0.83 0.83 0.13 0.13 0.13 0.13 0.13 0.13 4.2 4.2 2.55 2.55 55 55 42 42 327 36 + 0.9 v 250 25+ 0.9 v 27.0 27.0 27.0 27.0 28.0 28.0 28.0 28.0 50 50 80 80 a1 a2 b c 9.94 9.94 9.94 9.94 49 49 24.5 98 203 203 406 102 0.50 0.50 1.08 0.25 3 3 3 3 0.95 0.95 0.2 3.5 75 75 27 143 64 64 6.5 6.5 9.5 9.5 50 50 a1 a2 b c 15 15 15 15 98 98 49 196 153 153 306 77 0.57 0.57 1.15 0.29 0.75 0.75 0.75 0.75 1.5 1.5 0.3 6.0 65 65 20 117 115 115 13.0 13.0 14.2 14.2 50 50 a1 a2 b c 16.8 16.8 16.8 16.8 117 117 59 235 143 143 286 71 0.60 0.60 1.20 0.30 0.56 0.56 0.56 0.56 1.6 1.6 0.26 6.8 47 47 21 114 136 136 15.0 150 16.2 16.2 50 50 a1 a2 b c 22 22 22 22 301 301 150 602 73 73 146 37 0.40 0.40 0.80 0.20 0.26 0.26 0.26 0.26 6.6 6.6 1.5 23 83 83 33 166 327 327 19.0 19.0 20.9 20.9 50 50 a1 a2 b c 28 28 28 28 607 607 304 1215 46 46 92 23 0,32 0,32 0.64 0.16 0.13 0.13 0.13 0.13 16 16 4.2 64 105 105 39 205 646 646 26.0 26.0 27.6 27.6 50 50 no approval for iic no approval for iic see note 1
452 issue date 19.9.00 subject to reasonable modifications due to technical advances. copyright pepperl+fuchs, printed in germany pepperl+fuchs group ?tel.: germany (06 21) 7 76-0 ?usa (330) 4 25 35 55 ?singapore 7 79 90 91 ?internet http://www.pepperl- fuchs.com zener barriers - operating instructions how to select the correct barrier note: zener barriers type z787h and z887h have channels with diode returns. the ex terminals for the channels with diode returns should be regarded as 28 v voltage sources. the 28 v must be considered as the theoretical maximum up to which a capacitive load can be applied to the ex terminals due to the leakage current of the diode return. this voltage is only used in calculating the load capacitance. remark: a1, a2 and a3 are separate channels. b: two channels in parallel circuit with a ground connection. c: two channels in series circuit without a ground return. type nominal data see circuit dia- gram no. circuit diagram hazardous area safe area connections connections + ve - ve a.c. v ? z954 11) dummy 799 18 45 27 3 6 see note 2 ex-characteristics for [eex ia] iic max. end-to- end resist- ance u in at 10 ? u in max fuse rating u z (v) r min ( ? ) i k (ma) p max (w) c max (?) l max (mh) l/r ratio ? vvma a1 a2 a3 b c 4.5 4.5 4.5 9.0 9.0 11.76 11.76 11.76 3.92 17.64 383 383 383 1148 510 0.43 0.43 0.43 1.29 1.15 3000 3000 3000 3.2 3.2 0.25 0.25 0.25 0.028 0.12 85 85 85 19 24 27.27 27.27 27.27 0.9 (1 ?) 0.9 (1 ?) 0.9 (1 ?) 4.9 4.9 4.9 50 50 50
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