Trapped Key in­ter­locks from Ac­tive Safety

DEMM Engineering & Manufacturing - - PRODUCT WATCH -

Castell’s Trapped Key In­ter­locks al­low for in ex­cess of 50,000 com­bi­na­tions. With this level of avail­able codes, en­tire fac­to­ries and plants can have trapped key sys­tems with­out codes be­ing re­peated.

The steps to­wards cre­at­ing a trapped key so­lu­tion with ac­cess by per­son­nel would re­quire an ap­pli­ca­tion for ei­ther part body of full body. This is just one ex­am­ple of many types of so­lu­tions.

1. Iso­la­tion: Re­leas­ing a key from the dis­con­nec­tor when it is in the open po­si­tion thus iso­lat­ing the dis­con­nec­tor.

2. Key Ex­change: If nec­es­sary this key can be in­serted into a key ex­change box to re­lease mul­ti­ple keys.

3. Ac­cess Con­trol:

a. Part Body; has only one lock and the iso­la­tion key is used to open this. Whilst the ac­cess lock is open the key can­not be re­moved and there­fore the process can­not be started. Only once the lock is closed can the iso­la­tion key be re­moved and the process restarted.

b. Full Body; has two lock­ing mech­a­nisms, the first step in the process is to in­sert the iso­la­tion key. This will al­low the per­son­nel key to be re­moved and then ac­cess can be granted by open­ing the bolt. The iso­la­tion key can only be re­moved once the per­son­nel key has been in­serted. There­fore whilst the per­son­nel key is re­moved and the lock is open the process can­not be started. Only once the lock is closed and the per­son­nel key re­turned, can the iso­la­tion key be re­moved and the process restarted.

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