3-46 interlock switches non contact switches ferrogard 3, 4 & 5 description the ferrogard range of magnetically actuated switches offers non contact reliability together with to lerance to misalignment. they are designed to be installed so that when a guard door is opened, the action of the magnetic actuator being removed from the switches opens the n.c. safety contacts which are intended for the isolation of control power to a machine primary control element. the frs 3, 4 and 5 have terminal connections. the user must drill a hole in the housing at a convenient location to allow the wiring to enter the housing. the cover is secured with anti-tamper security screws. unlike some magnetic switches the ferrogards have protected safety contacts to help ensure that they do not fail to danger. in addition, some versions have independent auxiliary signal contacts to indicate the guard condition. all ferrogards have internal non-resettable overload protection on the safety contact. they should be protected by an external fuse rated as shown in the specifications table. features ? non contact actuation ? high tolerance to misalignment ? high switching current (up to 2a) ? various contact arrangements ? terminal connections specifications standards en954-1, iso13849-1, iec/en60204-1, nfpa79, en1088, iso14119, ansi b11.19, as4024.1 category cat. 1 device per en954-1 dual channel interlocks suitable for cat. 3 or 4 systems approvals ce marked for all applicable directives and culus reed contacts safety auxiliary operating distance ? make FRS3 frs4 frs5 12mm (0.47in) 21mm (0.83in) 12mm (0.47in) 13mm (0.51in) 12mm (0.47in) na operating distance ? break FRS3 frs4 frs5 23mm (0.91in) 24mm (0.94in) 23mm (0.91in) 10mm (0.39in) 12mm (0.47in) na closing time 3.0ms 0.5ms dropout time 2.1ms 0.3ms bounce time 0.7ms 0.7ms initial contact resistance 15m ? 10m ? initial capacitance, terminal to terminal 0.65pf 0.2pf initial insulation resistance te r m i n a l t o te r m i n a l 1.x.10 6 ? 1x10 6 ? safety contact switching capability 250v ac 2a max safety contact external fusing 1.6a quick blow auxiliary contact switching capability 300v dc, 250v ac, 0.5a including inrush. 15va/10w suitable for ac/dc circuits min initial breakdown vo l t a g e 600v ac 600v ac operating temperature -10c to +65c (14 to 149f) enclosure protection ip65 (nema 13) case material red moulded abs plastic mounting any position m4 mounting security screws included. electrical life 1 x 10 6 at rated loaded mechanical life 10 x 10 6 vibration 10 to 200hz shock 50g
interlock switches 3-47 non contact switches ferrogard 3, 4 & 5 product selection note: contacts are described with the guard door closed, that is, actuator in place. accessories approximate dimensionsmm (inches) dimensions are not intended to be used for installation purposes. typical wiring diagrams application details see page 3-54 for operating principles and mounting examples. safety contact switching capability connection housing material safety contacts auxiliary contacts type catalogue number 250vac 2a terminals abs plastic 1 n.c. 1 n.c. frs 3 440n-g02003 1 n.o. frs 4 440n-g02008 none frs 5 440n-g02009 description page number catalogue number replacement actuator ? 440n-a02005 == = = == = = switch 2 holes 4 through actuator 50 (1.97) 6 (0.24) 36 (1.41) 38.5 (1.52) 57 (2.24) 38 (1.5) 6 (0.24) 25 (0.98) 69 (2.72) 30 (1.18) 4 (0.16) 8 (0.31) 60 (2.36) 19.5 (0.77) 5 (0.2) 76 (2.99) 15 (0.59) 5 (0.2) 2 (0.08) 7 (0.28) 1 2 3 4 1 2 3 4 1 2 frs 3 frs 4 frs 5 safety n.c. fuse externally safety n.c. fuse externally safety n.c. fuse externally aux n.c. aux n.o.
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