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Like the 1HLI the 2HLE height limiter is designed to protect workers from overhead danger when operating in restricted conditions, and prevent all the hazards arising from these working conditions. The 2HLE is a more sophisticated height limiting system designed to monitor and control the operating height of multi-boom equipment.
Like the 1HLI the 2HLE height limiter is designed to protect workers from overhead danger when operating in restricted conditions, and prevent all the hazards arising from these working conditions.
The 2HLE is a more sophisticated height limiting system designed to monitor and control the operating height of multi-boom equipment.
The advanced 2HLE system has been developed for use in the construction and utility maintenance industries for use on machines such as excavators, wheel and backhoe loaders, telehandlers and other articulated machines operating in restricted conditions.
How It Works
The machine operator has the option of setting the height by entering the limit on the operator station display or moving the machine to maximum height. The 2HLE calculates the highest point of the machine and compares it to the limit, triggering motion cut when the limit is exceeded.
There is also the 2HLE-R variant for road rail applications, adapting in the same way as our 1HLI-R system, the 2HLE-R provides advanced height limiting for rail applications.
Accurate, gravity referenced angle sensors are installed on each articulating boom and the boom lengths and dimensions are programmed into the system on install along with the base pin height using the colour touchscreen display mounted at the operator station.
Multiple motion cuts are intelligently applied to prevent height limit infringements by any part of the articulating boom structure. Should any part of the machine’s boom assembly reach the programmed height limit the 2HLE selectively operates a series of hydraulic solenoid valves installed in the machine’s hydraulic control circuits to prevent any part of the boom assembly from exceeding the height limit. Boom movements away from the height limit are not affected.
In addition to the height limiting function, 2HLE also provides an accurate radius value to the bucket pin. Dual Redundant, Direct Drive sensor options available, for applications requiring higher performance level (PL) or safety integrity levels (SIL).
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