Instruction Manual PSE2xxC
22
Remarks:
1) The 3 SDOs referencing value (SDO #2004), actual value assessment, numerator
(SDO #2010) and actual value assessment, denominator (SDO #2011) have an
influence on the increment and position values: With the help of the referencing
value a shift can be reached, with the help of the actual value assessment
numerator and denominator a stretching or distension can be reached (see below).
2) When changing the direction of rotation (SDO #202C), the referencing value (SDO
#2004) and the upper and lower limit (SDO #2016 and #2017) are set to delivery
state.
3) When changing the actual value assessment numerator or denominator (SDO
#2010 or #2011), the target value, the actual value, the referencing value, the
upper and lower limit, the positioning window (SDO #2006) and the length of loop
(SDO #201F) are re-calculated.
4) When changing the referencing value (SDO #2004), the target value, the actual
value and the upper and lower limit are re-calculated.
5) 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 (SDO #202C),
actual value assessment, numerator (SDO #2010),
actual value assessment, denominator (SDO #2011)
b) referencing value (SDO #2004)
c) upper limit (SDO #2016),
lower limit (SDO #2017),
positioning window (SDO #2006),
length of loop (SDO #201F)
6) In order to save the settings permanently in the EEPROM, write 1 to SDO #204F.
As soon as reading of SDO #204F shows 0, the saving is finished.
Referencing value (SDO #2004):
The referencing process affects all transferred values, i.e., the target value, actual
value and upper and lower limit.
There are two ways of setting the referencing value:
1) Directly, by writing the referencing value to SDO #2004.
2) Indirectly, by writing an actual value to SDO #2003. This makes it possible to
assign any “true” actual value to the current, physical actual value. The resulting
difference is then the referencing value. This value will immediately be included in
calculations for each transferred value and can also be read via SDO #2004.
When changing the referencing value, automatically the target value, the actual value
and and the upper and lower limit are re-calculated.
d) Internal measuring system
(applys for “multiturn” variants)
The multiturn variants of the PSE2xxC actuator include an absolute measuring
system with measurement range of 68 rotations. This allows the user to determine the
direction of rotation for any desired portion of these 68 rotations.
The mapping of the desired positioning range to the physical positioning range is
done with the help of the parameter ‘upper mapping end’ (SDO #2028).
In the delivery state, the drive is at position 13600, the upper limit switch is set to
26400 and the lower limit switch is set to 800, yielding a positioning range of ±32
rotations (±128
00 increments). So if the desired positioning range doesn’t exceed ±32
rotations, in delivery state none of the following actions to adjust the positioning range
have to be taken.