Trapped Key Interlocks
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IDEM SKORPION Trapped Key Interlocks

 

IDEM Trapped Key Interlock The IDEM SKORPION trapped key system in Stainless Steel 316 & Die Cast Metal has been developed to provide extremely robust mechanical coded key safeguarding and interlocking for hazardous machinery.

The IDEM system works on the principle of releasing coded mechanical keys in a pre-determined sequence to ensure machine power is isolated before any access can be gained.

Once machine control has been isolated, the removed key from the isolator is then used to release other trapped keys to enable access to the guarded areas. Following the release of the first key (isolator) safeguarding is achieved without the need for expensive and time consuming electrical wiring.

If you have a safety application in mind or would like more information about IDEM trapped key interlocks, please contact More Control on +44 (0)345 00 00 400.


Trapped Key Principle


A trapped key guarding system is based upon the transfer of coded keys between a power isolation and a locking mechanism. The primary and essential feature of the system being that the removable key is trapped either in the guard lock or in the power isolation switch.

The interlock on the guard is arranged so the trapped key can only be released when the guard has been closed and locked.

Once the guard is closed and locked the key can then be transferred across from the guard to the power isolator.

Closing the switch traps the key preventing the keys removal while the isolator switch is in the ON position.


Features & Benefits


  • No reduction of integrity due to the distance between movable guard and control system.
  • High mechanical integrity, robust fixings and holdings suitable for all types of guards.
  • Eliminates the need for electrical wiring to each movable guard.
  • Available in Stainless Steel 316 - making it suitable when the movable guard is placed in harsh or hostile environments.
  • Suitable for CIP and SIP cleaning processes and can be high pressure hosed with detergents at high temperatures.
  • Can be used where the movable guard requires to be removed completely.
  • All keys are coded in the factory and it is virtually impossible to override the system.
  • A trapped key system provides a quick yet safe and reliable access to machinery.
  • Use of a trapped key system can also prevent shortcuts and enforce a logical set of procedures that need to be satisfied.
  • Until the isolator key is returned to its original position within the lock, there is no way to enable the machinery to be re-started.

    • For more information about IDEM trapped interlock systems contact More Control on +44 (0)345 00 00 400.

     

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