Safety Switches Trapped Key Switches - Rockwell Automation

1 Safety SwitchesTrapped Key SwitchesR3-102 Visit our website: S117-CA001A-EN-POverviewGeneralPrinciple s9-3- Trapped KeySwitches11-Cat. and Control SolutionsTrapped Key Interlocks Why Use Them?Based upon the premise that no one key can be in two places atonce, key interlock systems can be configured to provide that apredetermined sequence of events takes place or that hazards havebeen reduced before operators can become exposed to is a mechanical system and is therefore widely used inapplications including those where the location of plant,environment or explosive atmospheres make the use of electricalinterlock systems unsuitable or expensive to install. In addition,unique coding can be provided, leading to a greater degree ofsecurity and Prosafe?

2 In order to derive the full benefits from a Trapped key interlockingsystem its components must be totally practical, easily maintainableand readily available. Prosafe's unique key and code barrel gives theability for even complicated interlocking systems and spare parts tobe ordered from our worldwide network of distributors fast! A firstfor Trapped key Unique Prosafe BenefitsCompare the following to other Trapped key manufacturers:1. All stainless interlocking and coded parts including the codebarrel and internal components at no extra Weather cap as standard no extra charge for dust caps Standard red color-coded key and ID tags at no extra Custom color/text keys and ID tags nominal extra A complete range of isolators, key exchange, miniature valveinterlocks and gate interlocks all using the same key Marking Tested and ApprovedOnly Prosafe products carry the prestigious BG mark.

3 A sign ofsafety, independently tested by the German Berufsgenossen-schaftliches Institut f r Arbeitssicherheit, "BIA." Additional tests forvalve interlocks include Lloyds Certificate for fire test and 100,000 OperationsProsafe products have been subjected to independent, exhaustivetesting. With only a small amount of lubricant added infrequently,keys were inserted, rotated and removed at a rate of 12 times perminute. After 100,000 operations (at 10 operations a day this isequivalent to 27 years) the unit was functioning satisfactorily andmost importantly would "pass" only the original or equivalent newkey. No incorrect keys could operate the lock, underlining the unit'sintegrity as well as Prosafe AdvantageStainless precision cut keysRSafety SwitchesTrapped Key Switches3-103 Visit our website: S117-CA001A-EN-POverviewGeneralPrinciple s9-3- Trapped KeySwitches11-Cat.

4 Advantage Prosafe KeysCompact, solid and sturdy keys suppliedwith dust seals and coded tagging. Optionalcolors/text are SwitchesTrapped Key SwitchesR3-104 Visit our website: S117-CA001A-EN-POverviewGeneralPrinciple s9-3- Trapped KeySwitches11-Cat. Suggestions for an Interlocking SystemPlant and Machinery Interlocking !!"!" """"Primary hazards#$%&'()s%*a+)%,-Auxiliary hazardsKey control elementGuarded area accessAncillary @/6?34214;4as4u@607/u:;4?0/04>:41a0u14/1 :14ssu14s56078s4@s/1s!/;0;/73/AA?4<674A/1B1/u@?6@Ba@?7a:a7606<4?6s78a1B4!/;0;/73A/1s;6?6@BBua1?s 774ss;/73A/1B4@41a;?u02s;6?6@BC86@B4a@?;6A0/AABua1?s"8a6@6@041;/73A/1;a1B4/1://1;2a;6B@4?s;6?6@BC86@B4a@?;6A0/AABua1?s"/@s6?4114>/<a;/Aa;;:/541:1/<6?6@B36@40674@41B20/084s2s04>6D4DC4;470167a;>/0/1sC:14ssu16E4?

5 A61C407D"/>>4@0s"/@s6?41Aa70/1ssu78as1u@ ?/5@a@?4@<61/@>4@0a;Aa70/1ssu78as8aEa1?/usF4G:;/s6<4Ha0>/s:8414sDIs4 JJK6s/;a0/1a@?06>4??4;a2u@60s58414@474ss a12D"/@s6?416A0848aEa1?6s14>/<4?6>>4?6a04;26D4 DCaHLa786@41u@/@?u40/>/>4@0u>DbH914ssu16 Ea06/@/A82?1au;67/1:@4u>a067s2s04>sD7HS0 /14?4@41B2su78as7a:a760a@ @>/1408a@/@48aEa1?4;4>4@0@44?s6s/;a06/@/ 1>/1408a@/@44G:/su14Ma774ss:/6@06@041;/7 36@BD"/>>4@0s"/@s6?41s4qu4@06a;;26@041;/ 736@Ba;;:16>a12s/u174s/A8aEa1?s/a;;a144; 6>6@a04?DN@0u1@C14;4as6@Bas6@B;43420/6@: u06@3427/@01/;4;4>4@0D ??606/@a;>/@60/16@BC6s/;a06/@/17/@01/;Au @706/@ssu78ass560784s/1s/;4@/6?;/73s>a2b 46@7/1:/1a04?a0086ss0aB40/4;6>6@a04/0841 4;4>4@0sD=/Ba6@a774ss0/084?a@B41E/@4D"/> >4@0s"/@s6?41O342<41s6/@s0/:1/<6?4aH941s /@@4;3424G78a@B402:4s0/:14<4@0/:41a0/1;/ 73P6@F58/;4b/?

6 2a774ssa::;67a06/@s/@;2 HDbHQ/73/u0?4<674s14qu616@BO342s6@A1/>?6AA414@0s/u174s0/4@ @a??606/@a;Au@706/@ssu78as:1/B1a>>6@BM>a 786@414s4006@Ba14@474ssa12D"/>>4@0s=5/34 2<41s6/@s14qu614?a0a774ss:/6@0s0/Aa76;60 a04086sA4a0u14 DThe Prosafe AdvantageStainless SwitchesTrapped Key Switches3-105 Visit our website: S117-CA001A-EN-POverviewGeneralPrinciple s9-3- Trapped KeySwitches11-Cat. Principles of Trapped Key InterlockingAA ETU RsSTaUSVWXUYUXZ[\\[Ta]^[]V[T[as[AA AB AB KEX _Va``[\^[] aa bSc^XdeSffg_hij[T[as[acc[ss\SSVTSc^i^[] ak lAB SBL ak ^[]XdUSV[UVacUbSTUfVSZeuaV\\SSVlAC RKS _S[d[VeXm[VSbSUU[acYZS\[lAB AC DAL ak ^[]XdUY[d an ^[]SuUUSS`[deuaV\\SSVlSequence of Operation1. The ETU isolator has two keys. One is a nonremovable key. Theother key (a "AA" coded key) can be removed after a timedduration, which is set by a potentiometer inside the ETU the nonremovable key to turn the hazardous machinemotion off and start the timer.]]]]]]]]]]]]]]]]]

7 When the time expires, the KeyFree LED turns ON. Remove the "AA" Insert the "AA" key into the Key Exchange Unit (KEX) and turn it90 .3. Turn one of the "AB" keys 90 and remove it from the KEX. Thistraps the "AA" key in the KEX and prevents the restarting of Insert the "AB" key into the Single-key Bolt Lock (SBL) and turn it90 to gain partial body access to the Turn the second "AB" key 90 and remove it from the of this key also traps the "A" key in the KEX andprevents the restarting of the Insert the "AB" key into the Dual-key Access Lock (DAL) and turnit 90 .7. Turn the "AC" key 90 and remove the "C" key. Rotate the accesshandle to allow full body entry into the hazard Take the "AC" key into the hazard zone, insert it into the rotarykey switch (RKSE) and turn it 90 to send a signal to the machinecontrol system, to allow the machine to operate in a slow orteach Reverse the process to return the machine to full of MaterialsItemQuantityDescriptionCat.

8 Key Time Delayed with an AA Primary Key440T-MSTUE11AA21 Key Exchange Unit, AB Primary Key, Two B Secondary Keys Trapped (included)440T-MKEXE11 AAABAB31 Single Bolt Lock, AB Primary Key440T-MSBLE10AB41 Dual Access Lock, AB Primary Key, C Secondary Key Trapped (included)440T-MDALE10 ABAC51 Rotary Key Switch, AC Primary Code Barrel440T-MRKSE10AC61AA Key440T-AKEYE10 AANote:Primary keys must be ordered separately, when not provided for by a previous sequential Trapped key. In the example above, only one primary key must beordered separately. The remaining primary keys are provided by a previous sequential secondary ( Trapped ) SwitchesTrapped Key SwitchesR3-106 Visit our website: S117-CA001A-EN-POverviewGeneralPrinciple s9-3- Trapped KeySwitches11-Cat.

9 SelectionOrdering Prosafe Trapped key products requires codes to be included in the cat. Example 1 The codes are added to the end of the cat. no. Each code must be two characters in length. The first code(s) is the primary code and the last code(s), if necessary, are the secondary code(s). Primary codes do not include the key. The key must be ordered separately or must come from a previous operation. Secondary codes come complete with a key, as the key is Trapped in the code barrel. Use the tables on page 3-107 to select and track {vy|wr}uxvx~opqrsataruvt t| aty qxvz{vywqu|wr}uxvx~ tqxuru vauutv tqxuruoy vz ua} vy rrvss qr ~ ars|wv wuvt}qr rrvssqty u}}vu|w u bvtzo ota vx{vy~*Order Cat. No. 440 TMDALE100 AAAB to get a Dual key Access Lock with an "AA" primary code and a "AB" secondary code, with a "AB" Example 2440 TMKEXE16 a a S a u a a a u u a u u ua ss a ss u u b a a a a u a a S a u a a S a u **Order Cat.

10 No. 440 TMKEXE16 AAABACACAC to get a key exchange unit with "AA" and "AB" primary codes and three "AC" secondary "AA" and "AB" keys are not included. The three "AC" keys, which are Trapped in the secondary code barrels, are Prosafe AdvantageStainless SwitchesTrapped Key Switches3-107 Visit our website: S117-CA001A-EN-POverviewGeneralPrinciple s9-3- Trapped KeySwitches11-Cat. CodingfAeAdAcAbAaAfBeBdBcBbBaBfCeCdCcCbC aCfDeDdDcDbDaDfEeEdEcEbEaEfFeFdFcFbFaFfG eGdGcGbGaGfHeHdHcHbHaHfIeIdIcIbIaIfJeJdJ cJbJaJfKeKdKcKbKaKfLeLdLcLbLaLfMeMdMcMbM aMfNeNdNcNbNaNfPePdPcPbPaPfReRdRcRbRaRfS eSdScSbSaSfTeTdTcTbTaTfUeUdUcUbUaUfVeVdV cVbVaVfWeWdWcWbWaWfXeXdXcXbXaXfYeYdYcYbY aYfZeZdZcZbZaZCodeCodeCodeCodeCodeCodeAp plication& DateApplication& DateApplication& DateApplication& DateApplication& DateApplication& DateBelow is an example reference guide that is useful in selecting andtracking codes.