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Castell Safety - Trapped Key Safety Interlocks, Lockout Tagout Equipment and Drive-away Prevention
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Castell Safety - Trapped Key Safety Interlocks, Lockout Tagout Equipment and Drive-away PreventionCastellApplications

Applications - Machine Guarding - Permit To Enter - Time Delay Control (Electronic) - Full Body Entry

Product Usage: TDI20/AIE

When the machine running down, the access keys are trapped and the switch contacts 3N/O 3N/C. Turning the isolation switch to the off position changes the contacts to the switch and initiates the timer. After a pre-set time (set to the run down time of the machine) the timer energises the solenoid and releases the access keys. The keys can now be transferred to the access interlocks fitted to the perimeter guard of the machine. In this condition, the isolation switch cannot be returned to the 'on' position. The isolation switch can also be 'locked off' with a padlock as an additional safety measure. The position of the solenoid is monitored by two safety switches. This feature enables an external dual channel safety relay to be connected to the two normally closed contacts of the safety switches. The safety relay will prevent the machine from being re-started in the event of solenoid failure.

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