User guide

EDS - RK90R - OPTICAL BEAM SMOKE DETECTOR - USER GUIDE

8.12 - search for the maximum output signal optimizing the optical alignment of the Transmitter

acting slowly and in sequence on the 3 screws of regulation V1-V2-V3 present on the optical block.

This procedure takes some time but, if performed well, it assures a perfect operation of the detector for

many years. We suggest to use the following procedure:

• on the TX slowly turn the screw V1 clockwise and then look at the value of the signal visualized on

the multimeter on RX. If the signal increased (for example from 3V it rised to 3,5V) then again turn the

screw V1 of the TX clockwise and then look at the value of the signal on the RX

• continue with this procedure as long as the signal on the RX increases.

When it has the tendency to decrease instead, stop the operation on the screws V1 of the TX returning

to the previous position

• if during the operation the signal overcomes 4,5V, to avoid the saturation, act on the trimmer P1 of

the RX to bring the signal back to 3 V, allowing the best evaluation of the variations of the signal

• after finding out the maximum og the signal acting on the screw V1, perform the same operations on

the screws V2 and V3 of the TX. In such way the best possible position of optical allignment is

reached.

This procedure is important because it will assure a perfect operation of the detector for long time

8.13 - if you don't have a multimeter it is possible to get good results in the optical alignment of the

detector as well, looking at the RX blue and red leds indications. Operation is the following:

• 1 flash of the blue Led: 1 Volt

• 1 flash of the red Led: 0,5 Volts

• if the signal is smaller of 0,5V the blue led and red one are off

• if the signal in the range 0,5-1 V the red led performs 1 flash, remains off for 2 seconds and then it

repeats the sequence

• if signal is among 1-1,5 V the blue led flashes once, remains off for 2 seconds and then it repeats the

sequence

• if signal is among 1,5-2V the blue led flashes once and the red led flashes once. They remain off for

2 seconds and then the sequence is repeated

• if signal is among 2-2,5 V the blue led flashes 2 times, remains off for 2 seconds and then it repeats

the sequence

• if signal is among 2,5-3V the blue led flashes 2 times and the red led flashes once. They remain off

for 2 seconds and then the sequence is repeated

• same type of indication up to 4 V