Banner EZ-ARRAY USB Serial Adapter - Manual (Page 9)

P/N 126701
7
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
A-GAGE EZ-ARRAY
QuickStart Guide
Overview
Figure 1-8. Measurement mode examples
Last Beam Made (LBM)
First Beam Made (FBM)
Receiver
Emitter
Last Beam Blocked (LBB)
First Beam Blocked (FBB)
Receiver
Emitter
Total Beams Made (TBM)
Total Beams Blocked (TBB)
Receiver
Emitter
10
20
30
40
50
60
In Last Beam Blocked mode,
last beam is #55 of 60
In First Beam Blocked mode,
first beam is #20 of 60
In Last Beam Made mode,
last beam is #50 of 60
In First Beam Made mode,
first beam is #40 of 60
In Total Beams Made mode,
38 of 60 possible beams are
made
In Total Beams Blocked mode,
22 of 60 possible beams are
blocked
10
20
30
40
50
60
10
20
30
40
50
60
• Last Beam Made (LBM): The location of the Last Beam Made
(unblocked).
• Middle Beam Blocked (MBB): The location of the middle beam
blocked, midway between the first and last beams blocked.
“Beam Total” Modes
• Total Beams Blocked (TBB): The total number of blocked
beams.
• Total Beams Made (TBM): The number of beams made.
• Contiguous Beams Blocked (CBB): The largest number of
consecutively blocked beams.
• Contiguous Beams Made (CBM): The largest number of
consecutively made beams.
• Transitions (TRN): The number of changes from blocked to
clear and clear to blocked. For instance, if beams 6-34 are
blocked, then there is a clear-to-blocked transition from beam
5 to beam 6, and a blocked-to-clear transition from beam 34 to
beam 35. Transition mode can be used to count objects within
the array.
• Outside Dimension (OD): This measurement returns the value
of the distance from the first beam blocked to the last beam
blocked.
1.8 Electronic Alignment Routine
The objective of the optical alignment process is to adjust the
emitter light level to maximize sensor performance. Perform
the alignment procedure at installation and again whenever
the emitter and/or receiver is moved. The procedure can be
performed using the receiver interface, the receiver remote wire
or the GUI (see Section 4.2 or 5).
During the alignment procedure, the receiver polls each beam
channel to measure excess gain and performs a gain adjustment
for each beam. When the system exits the alignment procedure,
each channel’s signal strength is stored in non-volatile memory.
The Alignment push button may be disabled, using the GUI.
1.9 Blanking
If a machine fixture or other equipment will block one or
more beams, the affected beam channels may be blanked.
The blanking option causes the receiver to ignore the status
of blanked beams for measurement mode calculations. For
example, if a machine fixture blocks one or more beams during
sensing, the output data will be incorrect; if the beams blocked
by the fixture are blanked, the output data will be correct.
Blanking may be configured using the receiver’s Alignment push
button, the receiver remote wire, or the GUI.
1.10 Measurement Mode Selection
The outputs may be configured for any of fourteen measurement
(scan analysis) modes, which refer to specific beam locations,
quantities of beams, or edge transitions. Note that not all
measurement mode options are available when the receiver
interface is used for configuration. Selected modes are individually
assigned to one output (see Section 4.1 or 5).
When using the GUI for configuration, the discrete outputs can
have NPN or PNP polarity, be normally open or normally closed,
and be assigned to any of the measurement modes. When
using the receiver interface, several combinations of output
configurations may be selected (see Section 4.1).
NOTE: The beams in the array are numbered in sequence, with
beam 1 located nearest the emitter / receiver displays, so
the “first beam,” as referenced below, refers to the beam
closest to the display.
“Beam Location” Modes
• First Beam Blocked (FBB): The location of the first beam
blocked.
• First Beam Made (FBM): The location of the first beam made
(unblocked).
• Last Beam Blocked (LBB): The location of the last beam
blocked.