Product category:
Safety relays, interlocks, control systems, electrical components
News Release from: Fortress Interlocks | Subject: AmGard2000 range of interlocks
Edited by the Manufacturingtalk Editorial
Team on 22 May 2002
Modular safety interlocks bridge a key
gap
A range of modular interlocks successfully bridge the gap between trapped key and gate switch technologies.
In AmGard2000, Fortress has designed a range of interlocks that successfully bridges the gap between trapped key and gate switch technologies Modular units replicate the existing product range with maximum flexibility
This article was originally published on Manufacturingtalk on 27 Aug 2001 at 8.00am (UK)
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KeyGard is Fortress's traditional range of trapped key interlocks.
It is based on the premise that one key can only be at a single place at one time.
Interlocks are designed to prevent access to enclosed areas or equipment where hazards may be present until a safe condition has been achieved.
This protects employees, minimises downtime and allows safe and frequent access to required machinery.
In a basic hazardous application, the equipment will be running with a key trapped in the power switch.
To open the gate (enabling maintenance or access to machinery) the same key must be taken out of the switch, isolating the power, and then inserted, turned and trapped into the door lock.
In this way, the power is isolated before access can be gained, safeguarding employees.
The AmGard2000 range of interlocks has been designed using both trapped key and gate switch technology to control access to equipment protected by safety guarding, with either sliding or hinged doors.
The products can tolerate extreme misalignment by utilising components designed to allow for guard movement over time.
Within this range, Fortress also offers solenoid-controlled locks specifically for machines with run-down cycles.
Even when power is removed, the interlock will only energise the key release solenoid once the machine has stopped.
The solenoid requires energy to release the key; therefore, it will fail safely in the event of a total power failure.
Fortress Interlocks robust KeyGard and AmGard designs are suitable for category 4 safety applications and offer a unique modular approach.
Customised interlock systems can be created to individual specifications utilising standard products.
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