Rockwell Automation 45MLA Controller Installation Instructions - Manual (Page 9)

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Before beginning this process:
• Verify that the light array is mounted as it will be in the target
application.
• Turning the power OFF during any stage of the teach cancels
the process, restoring previously stored values.
• Previous values can also be restored by pressing the teach
button repeatedly until the teach process is completed and
LED D14 turns off (and is not flashing).
• Default parameters can be reset through use of switch eight on
DIP switch array S1.
• By default, each zone is configured as 1/4 of the number of
beams in the light array.
Step-by-Step Teach Function Guide
1. Start teach: Press and hold the teach button for approximately
five seconds until LED D14 begins flashing once every three
seconds, indicating that the unit is in teach mode.
2. Blanked beams: Check to confirm that any beams that will
normally be interrupted (blanked) in the application are being
interrupted. Briefly press the teach button again — the LED
D14 now flashes twice approximately every three seconds,
indicating that any interrupted (blanked) beams are
recognized.
Blanked beams are ALWAYS ignored. No other beams or zones
can be defined in the blanked beam areas. It is only possible to
define blanked beams above and below the detection area —
it is not possible to define blanked beams in between sensing
zones. The blanked area below the application (towards Beam
1) must include Beam 1 and is defined as Beam 1 to fb_offset.
(Beam 1 must be blocked to set up a blanked area below the
application detection area.)
3. Carrier zone: Place the carrier (pallet, crate, etc) in the light
array’s field and briefly press the teach button again. The LED
D14 should now flash three times approximately every three
seconds, indicating that all beams interrupted by the carrier
have now been recognized.
The highest of these beams is set as the “zc” beam (top beam
carrier zone). At the conclusion of this teach process all beams
between the “fb_offset” (exclusive) and the “zc” beam
(inclusive) will be defined as the carrier zone.
Note: Setting the carrier zone is only required for applications
utilizing over-hang detection. For other applications,
press the teach button to skip this step.
4. Over-height: The over-height output (Out 2) is a discrete on-
off output that is by default activated when any beam is
interrupted. (Default Beam oh = Beam 1)
In order to teach the over-height level, place the highest
allowed object in the light array’s range and then briefly press
the teach button. The LED D14 should now remain on,
indicating that the highest allowed object beam has now been
set. The next uninterrupted beam will be set as the “oh” beam.
At the conclusion of this teach process if any beam starting
with “oh” and higher is interrupted, the over-height output
(Out 2) will be activated.
5. Setting up zones: If you do not wish to configure specific
zones at this point, press and hold the teach button until LED
D14 turns off (approximately five seconds), signaling the end
of the teach process. If you wish to configure sensing zones
(corresponding to Outputs 3…6), press the teach button
briefly to enter the zone setup and follow the steps below.
i. Zone 1: When you enter the zone setup, LED D10 and D14
will flash, indicating that zone 1 is ready to be taught.
Place an object that represents the size of zone 1 into the
light array’s range. Now press the teach button to estab-
lish the highest and lowest interrupted beams, which will
define zone 1.
ii. Zone 2: LED D11 and D14 will be flashing after step i,
indicating that zone 2 may now be taught. As in step i,
place an object that represents the size of zone 2 into the
light array’s range and then press the teach button.
iii. Zone 3: LED D12 and D14 will be flashing after step ii,
indicating that zone 3 may now be taught. Again, place an
object into the light array’s range to represent the size of
zone 3 and press the teach button.
iv. Zone 4: LED D13 and D14 will be flashing, indicating that
zone 4 may now be taught. Place an object into the light
array’s range to represents the size of zone 4 and press the
teach button. The LED D14 now remains on,
acknowledging that all parameters for the zones have
been stored temporarily in memory.
6. Complete teach: To complete the teach process, press and
hold the teach button until LED D14 turns off (approximately
five seconds), signaling the end of the teach process.
Note: If it is desired to delete the new settings (thereby
restoring previously stored values), instead of pressing and
holding the teach button, briefly press the teach button. LED
D14 turns off (indicating the end of the teach process) and the
previous values are restored.