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A market leader, Fortress Interlocks design and manufacture safety access & control systems. Fortress offer an unrivalled portfolio suitable for applications across a wide industrial base from power generation and distribution, steel, automotive, recycling, building materials, through safeguarding robots and palletisers. With in excess of 40 years experience in the safety market, Fortress are renown for their innovative design, robust engineering and reliability. |
mGard is the premier range of modular robust trapped key interlocks for heavy duty applications. Trapped key interlocking is a tried and tested method of mechanically safeguarding dangerous machines and hazardous processes, and is suitable for category 4 (EN 954-1) applications. It is called "Trapped Key" as it works by releasing and trapping keys in a predetermined sequence. After the control or power has been isolated, a key is released that can be used to grant access to individual or multiple doors. |
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The principles of trapped key technology apply to all industries where it is essential that all energy sources are isolated before gaining access to machinery. Almost all safety issues can simply be solved by selecting the required products in order of the steps shown on this page. |
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1 power and control isolation |
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Identify the energy sources to be isolated and/or any hazard that cannot immediately be isolated such as; heat, pressure, radiation or machine rundown time. |
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Identify the type and number of access points.
Because of the modular arrangement of mGard both key exchange and door lock units can easily be extended with an extension module (XMA), for instance when doors are added to the safeguarded area or machine.
The Fortress Trapped Key System allows the safeguarding of potentially hazardous areas without the need of wiring.
All mechanical mGard configurations are suitable for use in areas where explosive or flammable gases for dust particles may be present. |
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3 door locks and actuators |
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Identify the type of access point; part body or full body access doors with or without the use of personal safety keys (to prevent accidental lock in). |
amGard is the ultimate range of modular safety gate switch interlocks, for heavy duty applications. Its modular construction allows easy configuration. amGard provides total electro-mechanical solutions for practically any safeguarding application.
By its unique design concept, amGard offers a fully integrated safety switch controlled closing and/or locking system, designed for strength and reliability in hazardous operating conditions.
The amGard system replaces all adaptations normally fitted within a guarding system.
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Additional arrangements like actuators/operators, catches, internal release functions, trapped key functions and deadlocks are no longer needed. All of these separate functions are or can simply be incorporated into the amGard configurations. |
Head Modules, Actuators & Cap- |
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Handle Actuator & Head
Tongue Actuator & Head
Lock-Out Clips
Slidebars
Mechanical Cap (for non door lock configurations) |
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Safety Key Adaptor
Access Key Adaptor
Internal Release Adaptor
Padlock Devices
Foot (to terminate mechanical lock) |
Electrical Switching / Locking |
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Safety Switch Bodies
Solenoid Controlled Lock Bodies
Explosion Proof Switch Bodies
AS-interface version available
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Key Switch Option Pod
Indicator Lamp Option Pod
Pushbutton Option Pod
AS-interface version available |
| Select and Configure your Solutions |
The basic assemblies ATSTOP, ATLOK and AMSTOP, AMLOK are only a selection of the configurations to suit basic heavy duty safety gate switch requirements. By selection of optional modules these configurations can easily be extended with the required functions.
amGard composes dual channel safety circuits to allow cross monitoring, the robust stainless steel actuator with a self-adjusting operation provides a long life cycle and reduction of down time and maintenance. Suitable for category 4 (EN 954-1) applications the amGard range is ideal for use in harsh environments and is tested to over 1,000,000 operations.
amGard trapped key modules are fully interchangeable with the Fortress mGard range of trapped key interlocks. |
eGard is the new totally modular approach to controlling access to hazardous machinery and equipment. A compact access and control system has been developed that enables a selection of configurations including mechanical trapped key interlocks, electrical safety gate switch interlocks and electrical operator controls, either as separate devices or integrated into one device.
The system features patented mechanical and electrical connections between every module. It simply clips together and the internal network is self-configuring. With over 4,000 billion possiblecombinations of modules it can be easily
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customised for every access and control application. The eGard product range is defined into three sections: head modules, core modules and base modules. |
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