1 Store bulky bike ski or cargo racks above your garage floor and out of the way. 2  Rack Stash quickly mounts to the stud on virtually any available wall space.  Can be used as a bike repair stand as well as a convenient location to store all of your hitch gear.
Definition of 'fail-safe'. fail-safe also failsafe. Something that is fail-safe is designed or made in such a way that nothing dangerous can happen if a part of it goes wrong. The camera has a built-in failsafe device which prevents it from working if the right signals aren't received. Word Frequency.
To make a PLC fail-safe the system does not require energization to stop the drives associated. For example, usually, an emergency stop is a normally closed contact. In the event of a power failure this would remove the power directly from the coil and also the PLC input. Hence, a fail-safe system.