halstrup-walcher PS-3 Series, Оригинальное руководство пользователя

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Instruction Manual PSx3xxPL
34
4.6
Use of the “Upper mapping end” parameter
The following
chapter illustrates the use of the parameter “upper mapping end” both
graphically and by means of examples:
4.6.1 Delivery state
In the delivery state (“DS”), the actual position is exactly in the middle of the
positioning range. There is a safety margin of three rotations at the output shaft at
both the lower and upper ends of the positioning range. Positioning runs that extend
into these safety margins are rejected by the device with the error “Incorrect target
value”.
In the delivery state, the values from the following table result for the upper mapping
end and the lower and upper limits:
Upper mapping end 102,400
Lower limit 1,200
Upper limit 101,200
Positioning range symmetrical to 51,200
Starting from this state, the maximum possible positioning range can now be shifted
upwards or downwards as required.
It is important to note that after the device has been installed, the available positioning
range may not be sufficient in one of the two directions. The parameter “upper
mapping end” now allows you to reduce the positioning range in one direction and
increase it in the other direction.
4.6.2 Shifting the positioning range upwards starting from the delivery state
In the following example, starting from the DS, the maximum possible positioning
range is shifted
slightly upwards using the parameter “upper mapping end”:
Here, the upper mapping end was increased from the value 102,400 to 116,200.
Consequently, a higher proportion of the possible positioning range is above 51,200
and a smaller proportion below 51,200.
In the extreme case, the upper mapping end can be set so that the entire possible
positioning range is at values ≥ 51,200. With standard scaling (numerator =
denominator = 400, i.e. 1 step = 0.9°) and referencing value = 0, this special case
results if the relevant value from the following table is selected for the upper mapping
end. The device then automatically adjusts the lower and upper limits accordingly.
Upper mapping end 152,400
Lower limit 51,200
Upper limit 151,200