Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 25
4.11.6
Dispatch Traffic Programs
The Dispatcher will monitor hall calls and traffic patterns to determine the best mode for
meeting the current demand for service. It will initiate Up Heavy, Down Heavy or Heavy
programs as required. There are some adjustments that affect how these programs are
triggered.
Heavy Program will be initiated if the total number of Up and Down Hall Calls exceeds the
adjustable trip value (Setting = # of Calls for Heavy).
Down Heavy Program is initiated if the number of Down Hall Calls minus the number of
Up Hall Calls exceeds the adjustable trip value (Setting = # of Calls for Down Heavy).
If a car leaves the Main Landing with more than the number of Car Calls set by the
adjustable trip value (Setting = # of Car Calls for Up Heavy) it initiates the Up Heavy trip
time. If an Up Hall Call is registered during this adjustable time (setting = Hold Time for Up
Heavy for Car), then Up Heavy is initiated. Up Heavy will be extended for an adjustable
time (setting = Hold Time for Up Heavy for Group) after a car leaves the Main Landing
loaded. Up Heavy is also held for an adjustable time (setting = Hold Up Heavy after Hall
Call) after the Main Landing Up Hall Call has been answered. So, if no cars leave the Main
Landing loaded, and the Main Landing Up Hall Call is not registered the Up Heavy program
will time out.
Inputs are normally provided to initiate these programs manually. These can be
connected to a time clock, if desired, to initiate the program at certain times of the day.
The programs will affect homing, and which calls are assigned to which cars, including
assigning calls to cars that are not se
lected as being the “Next” car in a zone, or are in a
different zone.
Forcing the Dispatcher into a traffic program when there is not sufficient demand to
justify it may cause the cars to chase each other. Consequently it is recommended that the
system be allowed to automatically select the best traffic pattern.
If the Main Landing Up Hall Call is registered and there are multiple cars at the Main
Landing, the cars that are not selected as the “Next” car will not be given the call
immediately. The delay a
llows the “Next” car to respond to the call, so that all the cars do
not open their doors for one call. This delay is listed “Main Ldg Call Delay” on the MH
-3000
Settings sheet.
If a hall call has been registered for longer than an adjustable time (setting = Hall Call
Help Time), then the call will be assigned to additional cars.