©
CIAS Elettronica S.r.l.
Ed. 1.0
Installation Handbook
page
43
of
59
MANTA 50 – 80
f. Unscrew lightly the bracket screws of the transmitter and move the horizontal alignment,
looking for the maximum received signal on the receiver head like indicated in the previous
point “e”. When you are performing the alignment operation on the TX head, it is possible to
acquire the new level signal simply momentary interrupting the beam, for example passing an
hand trough the beam ahead the TX head, instead pushing S3 button.
g. Once the best alignment is reached (maximum signal available), screw strongly the bracket
screws, both on transmitter and receiver, to block the horizontal movement.
h. Unblock the vertical movement of the receiver and move it slightly upward. Push S3 button
and then move the head downward looking for the maximum signal like indicated in the
previous point “e”.
i. Unblock the vertical movement of the transmitter and repeat the operation described for the
receiver vertical alignment. Once the best vertical alignment is reached (maximum signal
available), block the vertical movement both on transmitter and receiver.
j. Turn the functions’ switch
SW1 in the position 2
, make sure that during this operation
nothing is within the microwave beam, for example the operators don’t walk between the
transmitter and the receiver.
Remember that this operation is very important because now the barrier acquire the value of
the modulation channel and the value of the microwave signal. An alteration of the
microwave beam in this moment will make incorrect the installation therefore it will be NOT
safe.
When button S3 will be pressed the 2 leds D8 and D9 will turn on together. The operation of
acquire ends some seconds after that the button S1 is press. If the channel and the signal
acquired are correct the 2 leds D8 and D9 will turn off and the buzzer will make some
sounds (BEEP) which indicate the quality of the alignment.
The following table show the rapport between the number of sounds and the quality of the
alignment :
1 Beep
=
Excellent Quality
2 beep
=
Good Quality
3 Beep
=
Poor Quality
4 Beep
=
Insufficient Quality
5 or more Beep
=
Terrible Quality
In the event that the alignment quality is poor or less, repeat the operations of alignment, and
verify that nothing is within the microwave beam.
k. Select by the “function switch”
SW1 position 3
. The
prealarm thresholds
adjusting phase is
activated. The two prealarm thresholds are set under and over the rest field value. The
analysis process begin when the field value, overcomes one of them. If the field value remain
between the prealarm and the alarm threshold continuously for about 40 seconds, a prealarm
event is generated and the alarm relay is activated.
To
read
the present prealarm threshold value operate as follow:
•
Rotate decimal switch
SW2
(tens column) until the second red led (
D9
) becomes ON .
•
Rotate decimal switch
SW3
(units column) until the first red led (
D8
) becomes ON .
The reading values will be included between 01 and 80 (
default value 15
) Decreasing the
threshold value the sensitivity increase like the beam dimension.
To
modify
the present value increasing the sensitivity it is necessary to set, by means of the
two switches SW3 and SW2 a lower value and then push the button S3. To decrease the
sensitivity, it is necessary to set by means of the two switches SW3 and SW2, a higher
value and then push the button S3.
Содержание MANTA 50
Страница 55: ...NOTE...
