D-Link DSL-G684T Bedienungsanleitung PDF herunterladen (Seite 28)

the absence of light, its resistance

increases dramatically. In this case due to

the analog input photocell is connected to

its range is between 0 and 1023.

BlackBox blinds

To set light intensity simple single

blind controlled by servomotor is

adopted. As we can see on the photograph

round blind half transparent half black



servomotor.

BlackBox chasing

Housing itself is built in the same

manner as main chasing. 3mm black plexi

plates with no light permeability used to construct bottom and walls of the box prevent

photocell from receiving any signal when blind is closed. The top cover of the box is made

of the transparent plexi painted black without semicircle in the middle. It is attached by

four screws, one in each corner.

Inside, in the corner, there

are two sets of sockets. Double pin

to connect the photocell and triple

to connect the servomotor. As

photocell is symmetrical it does not

matter how we connect the plug.

However servomotor pins are

marked with appropriate

colors(black for ground, red for

positive supply and yellow for

control signal) to connect it

properly. It is important to go by

colors because connecting

Figure 21. Shutter mechanism

Figure 22. BlackBox without the top cover

Figure 20. Concept of the hysteresis in application to photocell

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 117 118

Keine Kommentare

D-Link DSL-G684T Bedienungsanleitung Seite 28