Domburg ASB4, Руководство пользователя

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ASB4 manual │ version 1 - 2022
Page:
9 from 14
Relay
Each servo has a relay that switches to the centre position of the servo. Each relay has two change-over
contacts as shown in Figure 1. This means that each contact consists of a Common (COM), Normally
Closed (NC) and Normally Open (NO). We have made this easier to understand by a number of letters per
contact:
COM: Common
NC: Normally Closed
NO: Normally Open
In principle, you can forget the above. You connect the power supply wire of the thing you want to switch
to COM, then the contact switches this voltage either to NC or NO. This depends on the position of the
relay.
If you want to polarize a switch:
-
Solder a wire to the centre piece of the turnout and connect it to terminal COM
-
Solder a wire to the rail which is straight, this feeds the centre when bent. Connect this to
terminal NO
-
Solder a wire to the rail which is bent, this wire feeds the centre when straight. Connect this to
terminal NC
-
Measure with the multimeter after switching the servo whether the correct rail is led to the
centre piece
-
If this is not the case, swap NO and NC
If you want to create a status message with an LED:
-
Connect the long leg of the LED (Cathode) to the V+ of the power supply.
-
Connect the short leg of the LED (Anode) to the NC or NO terminal of a contact. Depending
on the status message, determined by the position of the servo.
-
Connect the GND of the power supply to terminal COM.
Figure 3