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HYDROFIT
™
Owner’s Information Manual
WARNING: The use and ownership of this work is defined in the legend upon the front page hereof.
Group: Group Dispatching Features
Relative System Response Dispatching
Relative System Response (RSR) is a numeric index that indicates the desirability of
having a given car respond to a given hall call based on the car’s parameters
(position, direction, load, etc.) and the car’s previously assigned demands for service
(car and hall calls). The calculation of RSR involves the summation of applicable
time increments associated with various operating states of the elevator. The car
with the best (lowest) RSR is assigned to respond to a hall call.
Car to Landing Operation
An optional three-position car-to-landing keyswitch is available in a lobby panel or
hall station fixture. The designations on the switch are: “Doors” (the neutral
position), “Open” (calls the car to the lobby), and “Close” (which locks the car out of
service when the car is placed on independent service).
Cars Parked at Lobby
In a multi-car group, the number of cars parked at the lobby is selectable. The
normal condition is one car, but some configurations may require additional cars to
handle constant heavy traffic at the lobby.
Moderate Incoming Traffic
When traffic at the lobby floor increases, as indicated by two cars leaving the lobby
in the “UP” direction, or as activated by the up peak clock, cars assigned to upper
zones are called to the lobby without waiting for a call from the lobby landing. Cars
are automatically dispatched from the lobby when they become loaded to or near
capacity. They also are dispatched if not loaded to capacity within a predetermined
time after the previous car is dispatched. The cars continue to operate in this
manner until the lobby traffic is reduced to a predetermined level.
Basement Service
This feature activates during Moderate Incoming Traffic operation and prevents a car
from parking at a basement landing. During Moderate Incoming Traffic operation all
cars park at a designated entrance floor and are selected for up-dispatch. The
doors open and an “UP” lantern illuminates. Basement hall calls are served by the
first down traveling car that answers the basement hall call, provided the “No Lobby
Car Bypass” feature is not in effect. Basement service should not be specified if
substantial traffic is expected at the basement. Instead use Separate Basement
Zone operation. During periods of the day when the system is not operating in the
Moderate Incoming Traffic mode, the basement (which is assumed to be part of the
lobby zone) is served as any other floor in the zone.
No-Lobby-Car Bypass
This feature is a variable of Moderate Incoming Traffic operation and speeds the
return of cars to the lobby during Up Peak Operation. In the absence of a lobby car,
