Determining The Seat Rotation Profile - ThyssenKrupp Flow2 Assembly Instruction Manual

2007.03.07
The following rule of thumb can be used for this: For each cm length
on the rail a speed change of 2% has to be calculated. So:
The distance B is therefore 10 cm.

7.3 Determining the seat rotation profile

The same rules apply for both the speed profile and the seat rotation
profile. The control will therefore calculate the intermediate angle for
any point using the two adjacent programmed points, also called
interpolation, just as for the speed. An average seat rotation profile
can therefore only consist of a few well estimated points. It can
certainly be said that the seat rotation profile is harder to determine
than the speed profile because there are no rules of thumb that
apply here.
An example of a rail that goes up onto a small landing. The stairs
themselves are so narrow that the lift here can only move when the
seat is at an angle of 90, see the illustration.
The seat rotation profile to be programmed is indicated with A numbers. From the landing, we start
with A0 (is 0) and then start to turn immediately to an angle of 70. From this point we turn a little
further to 90 so that the chair's footrest does not touch the wall at point C1 in the first half of the rail
curve.
In the second part of the rail curve there is another contact point at C2. By programming a seat
rotation angle of 130 at the right point, the footrest will not touch the wall. After this we have to turn
back to a seat rotation angle of 90 as quickly as possible, otherwise the footrest will touch the wall at
point C3.
A good question is whether point A7 is needed. This point is after all reasonably close to the
interpolation line from A0 to A9. The answer is that this depends on the 'programmer'. Point A7 does
give extra certainty before the chair enters the curve. In addition, there is sufficient memory available
(250 actions in total), so we do not have to be conservative with input points.
As well as a seat rotation angle 'A', a rotation 'r' can be entered. The difference between type 'A' and
'r' is that the seat rotation is only carried out while moving while a rotation is always carried out while
Flow2 stairlift
9 4 –
----------- -
A = = 25cm
0 2 ,
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Tab 04: Install, adjust and release
Installation without flash card data
1
Fig. 7-4
1
Fig. 7-5
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