Product category:
Safety relays, interlocks, control systems, electrical components
News Release from: Mistura Systems | Subject: MLQ Emergency Release Interlock
Edited by the Manufacturingtalk Editorial
Team on 07 August 2001
Overriding safety locks in an emergency
Trapped key interlocks control access to potentially hazardous areas, but a critical failure of safety procedure could leave an operative locked inside a protected zone. i
Trapped key interlocks are an invaluable way of controlling access to potentially hazardous areas, but a critical failure of safety procedure could leave an operative locked inside a protected zone in serious danger of injury or death It is therefore essential that the interlock can be overridden in an emergency; it is also essential that any override mechanism should be mechanical, as electrical devices may not work in the event of a fire or power failure
This article was originally published on Manufacturingtalk on 21 Jan 2002 at 8.00am (UK)
Related stories
'Search and Seal' ensures operators are clear
Mistura Systems has developed a "search and seal" interlock system to prevent personnel from becoming trapped in potentially hazardous areas.
The new MLQ Emergency Release Interlock from Mistura Systems caters for such a worst-case scenario.
Located inside the guarded area, it utilises a conventional crash bar door lock which instantly overrides the interlock mechanism, opening an escape route.
Machinery within the protected area can only be started when the access door is fully closed and locked.
In the unlikely event of someone remaining trapped inside when the machinery starts, they simply hit the crash bar to override the interlock mechanism and open the door.
Five versions of the MLQ are available, incorporating personnel/supervisor keys, manual or auto reset, and signal switches to interface with PLC controls.
• Mistura Systems: contact details and other news
• Email this article to a colleague
• Register for the free Manufacturingtalk email newsletter
• Manufacturingtalk Home Page
Search the Pro-Talk network of sites
