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EDS - RK90R - OPTICAL BEAM SMOKE DETECTOR - USER GUIDE
• on the detector slowly turn the screw V1 clockwise and then look at the value of the signal visualized
on a multimeter. If the signal increased (for example from 3V it rised to 3,5V) then again turn the
screw V1 of the detector clockwise and then look at the value of the signal
• continue with this procedure as long as the signal increases. When it has the tendency to decrease
instead, stop the operation on the screws V1 of the detector returning to the previous position
• if during the operation the signal overcomes 4,5V, to avoid the saturation, act on the trimmer P1 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.
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
8.12
- 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 detector 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
• if the signal overcomes 4 V, the blue Led flashes faster and faster as the frequency signal increases
up to 4.7V
• when the signal overcomes the 4.7V and in the range 4.7V - 4.9V, the blue led is continously ON.
This is the position of optimal setup
• if the signal gets over 4.9V the two blue and red leds are permanently on. This is the saturation
indication.
The table of fig.8 recaps the leds operation.
