Sequence Of Operation - GAL GALaxy eHydro Manual

GALaxy eHydro Elevator Controller
while running up to the top terminal floor is the Terminal Speed Device (TSD) limit switch that directly
removes power from the up fast valve. The top most limit switch is the Terminal Limit Hatch switch
(TLH) that directly removes power from pump motor and all valves.

1.5 Sequence of Operation

Normal elevator operation, Automatic Mode, is selective-collective. When the elevator is traveling
upwards to answer calls, all up hall calls at floors above the car are answered in the order reached by
the car, regardless of the order in which the calls were registered. Upon reaching each landing with a
car call or hall call registered, the car and hall doors at that floor are automatically opened.
The doors stay opened for a dwell time that is field adjustable. There are three different dwell times
depending on whether it is a lobby call, car call, or hall call. The door will close before the set dwell time
has elapsed if a passenger presses the door close button and the minimum door open time has expired.
The door will reopen before it is fully closed if the door open button is pressed, if a passenger pushes
on the safety edge, if the photo-eye light beam is interrupted, or if a call for that floor in the direction of
travel is pushed. The door will close when the door opening condition is eliminated. When the door has
fully closed, the calls are answered.
When all up hall calls and car calls above the car have been answered, the elevator reverses direction
and travels downward to answer car calls and down hall calls placed below the car. The calls are
answered as previously described for up calls. When all calls below a down car are answered, the car
reverses direction to repeat the cycle. In short, an elevator traveling up will bypass down hall calls, and
an elevator traveling down will bypass up hall calls.
In buildings with more than one elevator grouped together, the actual time of arrival, "real time", is used
to estimate how long each elevator will take to answer a hall call. The elevator that can respond the
fastest takes the call. Real-time based dispatching permits the controllers to quickly respond to actual
demand for elevator service. Some of the criteria used to estimate the time of arrival are as followed:
•
Actual elevator floor to floor run times.
•
Actual run time to the floor whether it is a multi-floor run or a one floor run.
•
Whether the elevator is in or out of service.
•
Whether the elevator is in load weigh bypass mode.
•
The direction and position of each elevator in the group.
•
The average door cycle time at each stop.
•
Status of each elevator, accelerating, full speed, decelerating, actual time in motion.
•
Number of stops required due to car calls.
•
Number of stops required due to previously assigned hall calls.
•
System demand.
The above performance criteria are continuously measured and stored for improved accuracy in the
dispatching algorithm. All of the above data is continuously scanned, and the hall calls are reassigned if
the conditions change and another car can respond faster. The ability to measure actual hall waiting
time virtually eliminates long waiting and improves the average hall call waiting intervals throughout the
building.
Section 1 – Product Description
1-5