Regulations: OSHA / ANSI / ASME Crane Regulations
The R147 provides an audio and visual alarm when the hook reaches the maxi- mum safe height to the boom tip. The display transmits wireless to the tip mounted anti-two-block (ATB) switch. A second switch and weight can be added to monitor the main and auxiliary hoist on the same display. The switches are interchangeable, so they can easily be moved from one crane to another. The display has an internal relay that can be integrated with a function lock out system.
The system has several built in safety features. The internal antenna in the switch and display are a unique Rayco / Wylie design that eliminates the common failures in systems with external antenna. The display will also default to alarm and warn the operator if there is any interference with the signal to the ATB switch. In addition the low battery light will give the operator a minimum of two weeks’ notice when the batteries are getting low.