Drive functions
7.3 Function modules
Function Manual
242 Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Description
After a machine has been powered-up, for positioning, the absolute dimension reference
must be established to the machine zero. This operation is known as referencing.
The following referencing types are possible:
● Setting the reference point (all encoder types)
● Incremental encoder
Active referencing (reference point approach (p2597 = 0)):
– Reference cams and encoder zero mark (p2607 = 1)
– Encoder zero mark (p0495 = 0 or p0494 = 0)
*)
– External zero mark (p0495 ≠ 0 or p0494 ≠ 0)
*)
● Flying referencing (passive (p2597 = 1))
● Absolute encoder
– Absolute encoder adjustment
– Flying referencing (passive (p2597 = 1))
A connector input is provided for all referencing types to input the reference point coordinate;
this allows, e.g. the change/input via the higher-level control. However, to permanently enter
the reference point coordinate, an adjustable parameter for this quantity is also required. As
standard, this adjustable parameter p2599 is interconnected to connector input p2598.
Set reference point
The reference point can be set using a 0/1 edge at binector input p2596 (set reference point)
if no traversing commands are active and the actual position value is valid (p2658 = 1
signal).
A reference point can also be set in conjunction with an intermediate stop.
The current actual position of the drive is set here as the reference point using the
coordinates specified by connector input p2598 (reference point coordinates). The setpoint
(r2665) is adjusted accordingly.
This function also uses actual position value correction for the position controller (p2512 and
p2513). Connector input p2598 is connected to adjustable parameter p2599 as standard.
The binector input is not effective for the traversing task being presently executed.
To Next Page
Loading...
