RELAYS Panasonic

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Panasonic is part of a large worldwide groupselling relays and associated switching products under different brand names in different territories.The conditions of use in some territories may differ from those customary in Europe. In particular there are often major differences in regard to national and international specifications, such as UL, CSA, VDE, SEV, EVE, SEMKO, etc. Thus, when considering contact loads as stated in this catalogue (e.g. 10 A, 30 VDC for the SP relay) its hould be understood that these values are not necessarily an absolute maximum but tested ratings. Mostly the stated value has been tested for a certain life expectancy as stated by the manufacturer or the respective test house. Thus, under different conditions, the stated “maximum” may, in practice, be safely exceeded.

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One contact welded, e. 9-10 K1.g. A safety circuit needs two paths this failure mode. Two safety circuits K1 K 2 9 12 16 10 15 11 10 8 15 12 9 7 16 3) 4 (see wiring example, 591) Both contacts one path are welded, e. Self-holding circuit, three safety circuits K1 K2 12 14 11 13 o CO 9 7 f l 16 1) 4) One contact welded, e. 15 16 2.g. 7 16 8 15 K2 5 12 11 15 7 16 2. Condition contacts deenergized coil 5 7 K1 K2 9 1 n12 14 V /11 13 V 11 8 12 7 15 Condition contacts deenergized coil K1 K2 6 5 \ 9 14 10 13 11 Y 8 \ 7 v . Condition contacts deenergized coil K1 K2 ' 7 16 8 / 10 11 15 /13 N,11 10 15 14 i 7 16 Both contacts one path are welded, e.1.g. 7-8 and 14-13.g.g. The contacts 9-10, 12-11, and 14-13 interrupt the load. Condition contacts deenergized coil K1 K2 , - 5 7 / 9 '1 16 6 ,11 15 V / ~ 6 13 ( I10 8 15 5 16 [ 6 5 5 6 8 6 5 5 7 6 8 13 6 15 6 8 5 16 5 5 6 6 13 5 590 61408 sfn4d: 130312D . 9-10 K1. 12-11 K2.SFN4D Failure modes, application examples 1) Feedback loop, Self-holding circuit, Safety circuit, Auxiliary contacts 1. The contacts 7-8, 12-11, and 14-13 interrupt the load.2. K1 9 6 V10 K2 '1 16 11 15 Condition contacts deenergized coil K1 One contact welded, e. A safety circuit needs two paths this failure mode. Four safety circuits K1 K2 9 12 16 10 15 11 10 8 15 12 16 1) 4) (see wiring example, 591) Condition contacts deenergized coil One contact welded, e. 12-11 K2. 9-10 and 12-11.g

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