en:netzer:dimmer

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision		 Previous revision
en:netzer:dimmer [2011/12/19 12:47] – Fixed image links. sveschen:netzer:dimmer [2025/06/11 20:42] (current) – external edit 127.0.0.1
Line 1: Line 1:
 ====== 230 V Dimmer ====== ====== 230 V Dimmer ======
  
 +<note important>For this functionality the **[[io_project|IO project]]** (base or pro) has to be  [[fwupdates|uploaded]] to Netzer.</note> 
  
 +The Netzer supports the direct connection of phase dimmers. So it is possible to control high voltage loads like bulbs via Ethernet resp. Intranet/Internet.
  
 <WRAP center round important 60%> <WRAP center round important 60%>
- 
 **Be careful when experimenting with 230 V. There is danger to life!** **Be careful when experimenting with 230 V. There is danger to life!**
- 
 </WRAP> </WRAP>
  
- +A phase switching mechanism is described here that is for example built up by a thyristor. For this switching mechanism, the important feature of the thyristor is that in zero crossing it deletes from mains voltage itself, i.e. switches off.
- +
-From **version 1.4 pro**, direct addressing of a reverse phase dimmer is supported by Netzer.  +
- +
- +
- +
-A reverse phase switching mechanism is described here that is for example built up by a thyristor. For this switching mechanism, the important feature of the thyristor is that in zero crossing it deletes from mains voltage itself, i.e. switches off. +
- +
  
 {{ :phase_control.jpg?nolink& |}} {{ :phase_control.jpg?nolink& |}}
- 
- 
  
 The switching mechanism basically consists of zero-crossing detectors and a dimmer circuit. The switching mechanism basically consists of zero-crossing detectors and a dimmer circuit.
  
- +{{ :en:netzer:phasecontrol.gif?nolink& | Block diagram phase dimmer}}
- +
-{{ :en:netzer:phasecontrol.gif?nolink& | Block diagram reverse phase dimmer}} +
- +
- +
  
  
 ===== Zero-crossing detector ===== ===== Zero-crossing detector =====
- 
- 
  
 IO0 is used as a zero-crossing detector for the 50\ Hz network frequency. For this purpose, the pin is required to be configured as a digital input with an edge trigger switched on: IO0 is used as a zero-crossing detector for the 50\ Hz network frequency. For this purpose, the pin is required to be configured as a digital input with an edge trigger switched on:
- 
- 
  
 {{ :en:netzer:phasecontrolio0.gif?nolink& | IO0 setting}} {{ :en:netzer:phasecontrolio0.gif?nolink& | IO0 setting}}
  
- +Zero crossings must be captured by an external circuit, creating a homopolar pulse during every zero crossing. For this purpose, for example an AC optocoupler such as SFH620 is suitable.
- +
-Zero crossings must be captured by an external circuit, creating a homopolar pulse during every zero crossing. For this purpose, for example an AC optocoupler such as +
- SFH620 is suitable. +
- +
- +
  
  
 ===== Dimmer circuit ===== ===== Dimmer circuit =====
  
- +A triggered pulse output of Netzer is dimmed. **IO3** or **SPI_INT** are both suitable for this. It is hence possible to operate up to two dimmers in parallel. 
- +
-A triggered pulse output of Netzer is dimmed. **IO3** or **SPI_INT** are both suitable for this. It is hence possible to operate up to two dimmers in  parallel.  +
- +
  
 {{ :en:netzer:phasecontrolpulsee.gif?nolink& | Pulse setting}} {{ :en:netzer:phasecontrolpulsee.gif?nolink& | Pulse setting}}
  
 +This setting allows very granular gradations with a resolution of 200\ ns. Since under mains voltage a half cycle is 10\ ms and values between 100 (the is the smallest possible value in [[en:netzer:io#impuls|pulse operation]] and 50000 possible. Values comply with the time according **to which** the thyristor is powered. I.e. the larger the value, the less power will run at the output.
  
- 
-This setting allows very granular gradations with a resolution of 200\ ns. Since under mains voltage a half cycle is 10 ms and values between 100 (the is the smallest possible value in [[en:netzer:io#impuls|pulse operation]] and 50000 possible. Vlaues comply with the time according **to which** the thyristor is powered. I.e. the larger the value, the less power will run at the output.