©
CIAS Elettronica S.r.l.
Ed. 2.4
5.3 Electronic Alignment
After completing the optical alignment for all the optical modules using the integrated mirrors
and masks and after powering the infrared barriers check for the following situation:
5
Green LED
, on the transmitter electronic module is
ON
indicating that it is powered and
active.
6
Green
“Signal”
LED
on the receiver electronic module is
ON
indicating that it is powered
and that it is receiving an infrared signal of an intensity greater than the minimum required.
The receiver module also has two additional led, one
red
“Alarm”,
which when
ON
will indicate
an alarm, and one
yellow
“DISQ”
which indicates when
ON
the absence or insufficient infrared
signal for longer than about 1 minute and is active when
disqualified
.
To optimise the alignment, using the integrated electronic system, proceed as follows:
6 using the two small black masks supplied with each infrared barrier block the upper two TX
and RX modules.
7 insert the probes of a volt meter in the appropriate test points on the receiver.
8 adjust the orientation of the lower two TX and RX optical modules so that the voltage
measured by the voltmeter is as high as possible.
9 remove the masks from the two upper modules and fit them to the lower modules, taking
care not to disturb the alignment of the lower modules.
10 adjust the orientation of the upper two TX and RX optical modules so that the voltage
measured by the voltmeter is as high as possible.
11 remove the masks from the two lower modules taking care not to disturb the alignment of
the modules. The voltage measured by the voltmeter is a measure of the alignment quality.
The following table shows this evaluation.
Voltage Measured
Alignment Quality
> 1.5 V Excellent
from 0.4 to 1.5 V Good
< 0.4 V Poor
RICEVITORE
Installation Manual
Page
52
of
56
PYTHAGORAS
