3.3.5. Automatic control of an intercom

Control of a central intercom with home automation

Automatic control of a home intercom.

Amplifier

• DO1 Digital Output 1 (relay 10A) of the solenoid connected Unit1 intercom.

Control

• 1 digital input DI1 of the Unit1 drive connected to the switch.

Program

This example is very simple, because it only has to activate the intercom solenoid for a short space of time before the lock is free mechanical automation. For this control only has to handle the Click event of button and send the process DI1 Timo Ins On X [5] as a parameter indicating a value of 5 seconds. Each time you perform one-touch intercom is activated for 5 seconds, the mechanism is unlocked and allows the door to open.

Not all door units are equal, some mechanisms need to maintain the current at the time of opening, so that has to change the program to monitor events and send On and Off On and Off processes.