Functions
7100.006424_Bus description_PSD4xx_CA_H_ENG
28
08.04.2020
4 Functions
4.1
Types of positioning
4.1.1
Positioning run with loop
The PSD4xx distinguishes between the following cases of a positioning sequence
(Assumption: the target position is always approached through forward motion)
1.
New position value is larger than the current value: position approached directly.
2.
New position value is smaller than the current value: the drive reverses an
additional 5/8 of one rotation (2a) and approaches the exact position after
resuming forward motion (2b)
3.
New position value after reverse run (no loop): the drive always approaches by
moving forward (3b), if necessary, it will first reverse by 5/8 of a rotation (3a).
Once the target position has been reached, the device compares it to the internal absolute
encoder status. If the actual position differs from this target position, the “Error” status bit will
be activated.
4.1.2
Positioning run without loop
The “positioning without a loop” mode is used primarily for moving the small distances
involved in fine adjustments. In this case, each position is approached directly.
Actual
Actual
Actual
Target
Target
Target
