JLL 2000 Series, Руководство пользователя

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6-14
All the other signals possess a bidirectional output operable either at positive (+) or
negative (COM). The output chip, model LAA127, is on a plug-in base and can thus
be easily replaced if faulty.
NOTE: All the signals are visible using DEL placed in the magnetic head and in
the electrical junction box.
The inputs signals of the electrical junction box coming from the magnetic head are
on a plug-in base and can thus be easily replaced if faulty. The chips used are
#PC844 and LTV827.
6.2.9. 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).
6.2.10. 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 than 150’/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.