Instruction Manual PSx3xxPN
29
2) Mount the drive in any position on the axle, close the collar, then adjust the
positioning range with the help of Par. 41. Par. 41 defines the upper end of the
positioning range. By default, the upper end is at +256 rotations (position 102400).
If the positi
oning range doesn’t suit to the actual displayed position after mounting
the drive, the upper end of the positioning range can be adjusted freely between
+3 rotations and +253 rotations (measured from the actual position).
Examples:
a) After mounting the drive, the displayed position is 51200 (which corresponds
the delivery state). But the positioning range shall solely spread to the right
(resp. top).
upper mapping end = actual po 253 rotations
Set Par. 41 to 152400
b) After mounting the drive, the displayed position is 100000. But the positioning
range shall solely spread to the right (resp. top).
upper mapping end = actual po 253 rotations
Set Par. 41 to 201200
c) After mounting the drive, the displayed position is 2000. But the positioning
range shall solely spread to the left (resp. bottom).
upper mapping end = actual po 3 rotations
Set Par. 41 to 3200
Remarks:
1) When calculating the upper mapping end (Par. 41), a security reserve of 3
rotations has to be kept in mind (1200 increments by default, see the examples
above), because the highest possible position value is 3 rotations below the upper
mapping end. The lowest possible position value is 253 rotations below the upper
mapping end.
2) The above given increment and position values relate to the following settings,
which correspond to the delivery state:
a) position scaling, numerator (Par. 38) = 400
b) position scaling, denominator (Par. 39) = 400
c) referencing value (Par. 40) = 0
These 3 parameters have an influence on the above given increment and position
values: With the help of the referencing value a shift can be reached, with the help
of the position scaling numerator and denominator a stretching or distension can
be reached (see below).
3) When changing the direction of rotation (Par. 37), the referencing value (Par. 40),
the upper mapping end (Par. 41) and the upper and lower limit (Par. 42 and 43)
are set to delivery state.
4) When changing the upper mapping end (Par. 41), the upper limit (Par. 42) will be
set to the value [upper mapping end - 3 rotations x scaling] and the lower limit
(Par. 43) to the value [upper mapping end - 253 rotations x scaling]. This results in
a positioning range of 250 rotations.
5) When changing the position scaling numerator or denominator (Par. 38 or 39), the
target value, the actual value, the referencing value, the upper mapping end, the
upper and lower limit, the drag error, the positioning window and the length of loop
are re-calculated.
6) When changing the referencing value (Par. 40), the target value, the actual value,
the upper mapping end and the upper and lower limit are re-calculated.
7) If the user wants to go over any automatic re-calculation of values when setting up
the device, the optimum order of transfering the parameter is the following:
a) direction of rotation (Par. 37),
position scaling, numerator (Par. 38),
position scaling, denominator (Par. 39)
b) referencing value (Par. 40)
c) upper mapping end (Par. 41)
