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KW Aufzugstechnik GmbH OPERATING MANUAL DAVID-613
DAVID-D613-V125-E 13.04.2021 Page - 123 -
B45 – Minimum-Copy
General
In principle 6 magnet counters requiring minimum copying are necessary. If the plant does not have the
releveling function or no entry with open doors, a magnet counter can be omitted i.e. S72. The precise
position takes place in regard to the direction. All magnet counters are bistabile block switches with the
appropriate round magnets. As an attachment for the magnets the guide rail, as well as the pit flag
system can be used ESK04.
1.0 Leveling
The leveling depends on the direction. With rope-elevators without pre-opening the door stopping going
up is connected to the magnet-switch 12B and going down tothe magnet-switch 12A.
ATTENTION!
There may be a partial overlap of the consice magnet fields with precise position. From bottom
to top magnet 12B is always seen before 12A. The control recognizes the direction, however if
not executed correctly, floors will be counted falsely by the control.
On hydraulic lifts and cable systems with entrance, doors are opened or readjustment is maintained by
the stopping of the counter-aligned.
As long as both precise signals overlap themselves, no post-correction is necessary.
As soon as car sinks further or rises higher the precise signal is lost and so is the car after being ad-
justed into the opposite direction.
2.0 Brakepoints and Correction
The magnet switches 12A and 12B are also the brake-switches to drive into the destination floor. If you
are driving from the second floor to the first floor you do not need a brake magnet! You are braking with
the correction switch 13B.
This is also the case for the drive to the last floor. You are braking with the correction switch 13B.
Nevertheless if the delay impulses are set this leads to copying work errors.
PARAMETER: PULSE BUFFER DELAY
There is a pulse buffer-delay-time between 2 and 150 ms. It depends on the type of magnets you are
using. The KW-magnets only need a delay-time of 2 ms.
PARAMETER: CORRECTION TRAVEL
If there are false countings in the shaft copying, a correction trip starts. The time of execution can take
place ”after call input” or immediately in “automatic“ mode.