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small angle so the voltage does not exceed 4,5 V. Don’t desalign Rx and
Tx down or aside.
The sensor is operable at the «TEST» voltage from 0,1
up to 4,8 V. The boundary values of 1,2V and 4, 5V are recommended to
create the signal level margin and provide long-term stable operation;
-
lock the nuts 8;
-
disconnect the alarm cable from the socket
«TEST».
9.3. Rx thresholding
9.3.1
. Set the controller «MIN-MAX» in the position MAX. Regulate the thresholds,
crossing the protected sector at his full height or bent (crawling) along its whole
length. It is necessary to go out of the detection zone at a distance of 1-2 m for Rx
calming (otherwise the results of the previous passage will influence on the
following one). When the sensor generates alarms, «PROTECTION» indicator
goes out for 3-6 sec. The following passage can be done after the switching on the
indicator «PROTECTION». If the signal is not generated during the passage, the
controller
«MIN-MAX» is turned a little counterclockwise and the alignment is
continued.
Do some check passes in «problem» places of the detection zone: hollows, hills,
near tree trunks. Regulate the thresholds if necessary.
Note.
If
check passages are done at a medium speed, the threshold values allow to
detect an intruder moving at a speed from 0,3 up to 10 m/sec. To expand the speed
range up to 0,1…10 m/sec you should conduct additional alignment crossing the
sector at a speed of 0,1 m/sec.
Align the thresholds very attentively as «underrating» of the thresholds might
provoke a lot of false alarms; «overrating» of the thresholds might provoke
failures in the sensor operation.
Close the Rx cover when the alignment is finished.
9.4.
Check of the sensor operation
9.4.1
. For remote testing of the sensor operation it is necessary to bias the current of
5…30 V at the wire marked «RC» on the Tx unit. The current is biased from the
receiving-control device to «-» (negative charge) of the sensor power supply unit.
After it the sensor must generate the alarm.
It is recommended to test the sensor for 2-3 days after its alignment with the aim to
detect possible errors in mounting and alignment.
Summary of Contents for FORTEZA-300
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