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Limit Switches - Tee

Limit Switches (see file 1009-16)
For geared traction elevator applications, the limit switch package has been significantly reduced with the development of the digital controller / selector. The control signal communication functions such as direction, slow down and final limits are apart of the selector tape design.
There are two mechanical limit switches for hoistway access. One switch (top) stops the car when the car top is level with the top landing sill. The second switch (bottom) stops the car when the toe guard is level with the lowest landing header. All traction elevator installations that fall under the ANSI A17.1 2000 code or later require hoistway access if the combination of travel and cab height leaves 35 or more inches from the top landing sill down to the top of car when the car is at the lowest landing.

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