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Key Exchange Modules for Key Transfer

Once a machine's control circuits have been isolated and the 'Isolation Key' has been removed, multiple guard doors might need to be opened simultaneously and this typically requires a Key Exchange Module to be utilised.

This provides a means of key transfer whereby the 'Isolation Key' is trapped within the key exchange module which allows the 'Access Keys' to be released which can be used to gain entrance into the guarded area of the machine. 

By using a key transfer system, this prevents the machine from being restarted while an unsuspecting operator remains inside the machine, therefore helping to prevent unexpected machine restart. 

XM/XMS Modular Key Exchange Modules

The XM unit is a purely mechanical, modular key exchange unit which provides a means of transfering the 'Isolation Key' in exchange for the 'Access Key's that are used to gain entry into the machine's guarded area.

Both the XM and the XMS units (a stainless steel variant) can be equipped with stainless steel dustcovers to protect against dust ingress. These units can have a minimum of two locks and a maximum of 10, allowing for multiple exchange sequeunces to be created. 

Check the Specs

For more information on these products, download the technical datasheets using the following link to view the products technical specification, safety related data, dimensional drawings and best practice in terms of installation and maintenance.  

XMR/XMSR Switch Operated Key Exchange Unit

The XMR & XMSR (stainless steel variant) are switch operated key exchange units which incorporate two stages of a trapped key interlocking system (isolation and key exchange) into a single device, reducing your overall hardware costs. These units can either be mounted in a machine control panel or can be supplied in a polycarbonate enclosure. 

Under normal operation, an operator isolates the machine's safety control circuits by turning and removing the top key from the key exchange unit which operates the attached rotary switch. Only then can the remaining keys be released from the key exchange unit. 

  • No. of Locks: 2>>10
  • Switch Current: 20A/32A/63A
  • Minimum Operating Current: 5mA at 20v 
  • Switch Contacts: 4NO/0NC or 2NO/2NC

 

Check the Specs

For more information on these products, download the technical datasheets using the following link to view the products technical specification, safety related data, dimensional drawings and best practice in terms of installation and maintenance.  

Still unsure on safety?

If you are currently working on a machiney safety project and are unsure of the best way of safeguarding your machine, we can help you to specify the appropriate safety device based upon your application. 

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