Delem
V0802, 5.11
The advantage of the reference search cycle with system 2 is that in case the RSD switch is
mounted in the middle of the X-axes stroke, the control senses the status of this switch. In case
the X-axis is between the die and RSD switch a normal reference search cycle is initiated. In
case the X-axis is between the RSD and EOT+ switch the status of the RSD switch indicates that
reference search can start in the direction of the RSD switch (forward). Overall you will have
shorter reference search cycle time. Another advantage is the fact that it is not needed to mount
the limit switches for ref.-search.
Note 1
Reference switch activated means RSD input on axis connector is low. Reference switch not
activated means input is high (+24V).
Note 2
To be sure that the Ref.-switch (RSD) is mounted, the control will only move the backgauge
over the following distance for taking reference. This in case the RSD-switch input is active
(low) at the start of the reference search cycle.
A) Ref. search direction backwards: 1.5 x (max. position - ref. position)
B) Ref. search direction forwards: 1.5 x (ref. position - min. position)
Reference search sequence in combination with R- and Z-axes
When the start button is pressed the first time after power on all axis will search reference first.
During reference search the following cycle will be respected:
1. The X- and X2-axis move to the reference search direction switch (RSD). When RSD is
activated the X- and X2 is stopped.
2. Start Z- and R-axes reference search cycle.
3. In case of Z1 Z2 they will stop at their reference position.
4. When the R-axes have found their reference they will move directly to their programmed
positions.
5. When the Z-axes are at their reference position and the R-axes are at their programmed
position the X-axis will start to move and take their reference. At the same time all other
axes, except the R-axes, will start to move.
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