One Edge; Diameter And Position (Two Edges); Multiple Objects - Balluff Light Array BLA 50A-001-S115 Betriebsanleitung

BLA 50A-001-S115
Balluff Light Array
4
Operation and mode selection (cont.)
The following modes are available:
Mode Abbr. Description
Left Obj. LO For web edge guide control. Object
enters the light band from the left (L).
The distance of the leading / front
edge of the object from the left (L)
edge of the measuring field is
displayed. (This is the first falling
signal edge when evaluating the light
band from R to L.)
Left Slit LS First edge of a slit measured from the
left (L) edge of the light band. (This is
the first rising signal edge when
evaluating the light band from R to L.)
Right RO For web edge guide control. Object
Obj. enters the light band from the right
(R). The distance of the leading / front
edge of the object from the right (R)
edge of the measuring field is
displayed. (This is the first falling
signal edge when evaluating the light
band from L to R.)
Right Slit RS First edge of a slit measured from the
right (R) edge of the light band. (This
is the first rising signal edge when
evaluating the light band from L to R.)
Diameter D Object diameter (outside diameter, i.e.
holes or slits within the object are
ignored)
Slit S Slit width (inside diameter)
Pos. Obj. PO Object position (center point) mea-
sured from the left side
Pos. Slit PS Slit position (center point) measured
from the left side
Off Output disabled
Mode: Designation in the configuration menu
Abbreviation: As abbreviated in the value display
Following are some example cases:
4.3.1

One edge

To detect an edge brought into the field from the right side
(right edge of the field is covered), set "Right Object"
(RO) as the mode for an analog output. The distance of the
edge to the right border of the field is displayed at the
output. If the distance needs to be measured from the left
field border, set "Left Slit" (LS).
10 english
Fig. 4-4: One edge in the light band
In this case no value is output for Left Object (LO) or
Right Slit (RS).
Since there is only one edge, no value is output for Slit or
Diameter either.
4.3.2

Diameter and position (two edges)

The object is fully in the field, i.e. the borders of the light
band are not covered.
Fig. 4-5: One object fully within the light band
For example, selecting Analog output 1 = Pos. Obj. (PO)
and Analog output 2 = Diameter (D) allows the center
position and the diameter to be output simultaneously.
Alternately you can also for example output the position of
both edges:
Analog output 1 = Left Obj. and Analog output 2 =
Right Obj.
4.3.3

Multiple objects

Example with presence of multiple objects:
Only the first object from right and from left is detected.
Objects in between are ignored.