JLL 2000 Series, User Manual

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6-4
6.1.2. End of travel limit switches installation:
The same corresponding limit switches are found at the bottom floor: LNB. The
down normal limit switch must be activated as soon as the car goes 1-2 inches lower
than the bottom floor.
Make sure that normal stops at top and bottom floors are engaged by the magnets,
not by the limit switches (LNH-LNB).
6.1.3. Hoistway access and travel adjustment switches:
Depending on the speed of the elevator, there can be one or two hoistway access
switches:
If the speed is greater than150’/min (0.75m/s.), hoistway access switches shall be
provided at:
•
The lowest landing for access to the pit, when a separate pit access door is not
provided;
•
The top landing for access to the top of the car.
If the speed is 150’/min (0.75m/s.) or less, hoistway access switches shall be provided
at the top landing when the distance from the top of the car to the landing still
exceeds 900mm (35 in.) when the car platform is levelled with the second landing
from the top.
With the new A17.1/B44 code, we shall limit the movement of the car in the up and
down direction.
•
The movement shall be limited in the down direction to a travel not greater
than the height of the car crosshead above the car platform, and limited in the
up direction to the distance the platform guard extends below the car platform.