Safeguard your machine with minimal wiring

IDEM’s Skorpion Trapped Key System has been developed to provide extremely robust mechanical coded key safeguarding and interlocking for hazardous machinery and applications.

The trapped key system works on the principle of releasing heavy duty coded mechanical keys in a pre-determined sequence to ensure machine power has been isolated before any access can be made into areas where hazards or dangerous machinery is present. Once the machine control has been isolated (achieved by turning the first key in the system) the removed key from the isolator is then used to release other trapped keys to enable access to the guarded areas. Following release of the first key (isolator) safeguarding is achieved without the need for expensive and time-consuming electrical wiring – thus making the system perfect for use in harsh and challenging environments and applications.

Trapped key systems are essentially a sequential interlocking system using a mechanical lock that is used with gates or valves. The system typically consists of a control device/disconnect, a trap for the key exchange and various locking devices to prevent access to unsafe parts of a machine. Since safety systems are typically designed by controls engineers trapped key systems are not as popular as they should be because mechanical safety seems very “old school.” However, benefits such as these should not be overlooked:

  • Simple to use, no programming and requires minimal to no extra wiring
  • Reliable, robust & not affected by environmental conditions
  • Available in standard die cast (as shown in demo) or stainless steel (and the SS is relatively inexpensive)

 

 

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For questions or more information, reach out to PCC at general@pccweb.com or call (262) 251-3000.