Specifications
Governor's
Park
ConoOJIliniuffi
777 Washington Street
Denver,
CO
that call shall be canceled. The call shall remain canceled and the hall button ineffective until
the car doors begin to close after passenger traffic. Calls registered on car buttons shall cancel
in the same manner.
D.
The supervisory control system shall operate to meet the changing traffic conditions on the ba-
sis
of
demand. Provisions shall be included for handling traffic
as
follows:
1.
Heavy
Up
Incoming Traffic Conditions: The control shall automatically recognize heavy
incoming traffic in the morning and noon times
as
well
as
other times during the day
by
monitoring the changes in car passenger loads, the number
of
car calls registered and the
frequency
of
cars departing the lobby.
As
the incoming traffic intensity increases,
the
number
of
cars assigned
to
the lobby shall increase.
During Heavy Up, cars shall be loaded one at a time and only the doors
of
the next car
shall open.
As
that car becomes loaded, or the loading time expires, the car shall leave and
an adjacent car shall become next. Multiple car loading provisions shall be incorporated
into the system to permit multiple Next car assignments.
If
a car returns to the Lobby with
a passenger, causing the doors
of
that .car
to
open, that car shall be capable
of
receiving
passengers and dispatching within the normal dispatching time
as
if
it were the next car.
A car traveling Up on Heavy Up shall reverse and return
to
the dispatch floor after it has
answered its car calls and any Up hall calls assigned
to
it. Down hall calls shall be an-
swered by any car on the return trip.
When the incoming traffic diminishes, the control shall reallocate cars from the dispatch
floor and permit cars
to
park with their doors closed at the last floor served.
2.
Heavy Down Traffic Conditions: The control shall automaticallyrecognize heavy outgoing
or Down traffic conditions by monitoring the number
of
Down hall calls, their estimated
time
of
arrival and the actual waiting time
..
During this mode, the Down hall calls shall
be
given preferential service to handle the exiting traffic. All cars assigned to the main dis-
patch floor shall be released and cars arriving at the main dispatch floor shall remain
at
that floor for the same length
of
time
as
for any other floor. All Down hall calls shall
be
assigned based on which car has the best potential arrival time. The Down Peak traffic
mode shall have priority over Up peak.
3.
Selectable Hall Waiting Time, Down Peak: The Up hall call response time shall be preset
so that Up calls can be answered in an adjustable minimum/maximum time interval, per-
mitting better service
to
the outgoing traffic. The assignments shall be made the same way
as under Selectable Hall Waiting Time, Up Peak, but for
Up
hall calls only.
4.
Intermittent or Light Traffic: The control shall automatically keep the required number
of
cars in service based on the forecast waiting time. Cars shall remain parked at the last
floor served.
5.
Lobby Terminal Demand: The control shall provide for an adjustable number
of
cars at
the
dispatch floor during
off
peak conditions. When there is
no
next car at the dispatch floor,
the estimated time
of
arrival
of
the down traveling cars is calculated.
If
no car can reach
the dispatch floor within an adjustable time, a dispatch floor demand shall automatically
return an available car.
Elevator
Consulting
and
Design,
Inc.
16