Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision | ||
en:netzer:dimmer [2011/12/19 12:23] 127.0.0.1 external edit |
en:netzer:dimmer [2014/02/09 14:32] (current) |
||
---|---|---|---|
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%> | ||
Line 5: | Line 9: | ||
</WRAP> | </WRAP> | ||
- | From **version 1.4 pro**, direct addressing of a reverse phase dimmer is supported by Netzer. | + | 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. |
- | + | ||
- | 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& |}} | ||
Line 13: | Line 15: | ||
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. | ||
- | {{ :de:netzer:phasecontrol.gif?nolink& | Block diagram reverse phase dimmer}} | + | {{ :en:netzer:phasecontrol.gif?nolink& | Block diagram phase dimmer}} |
Line 20: | Line 22: | ||
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: | ||
- | {{ :de: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. | ||
Line 27: | Line 29: | ||
===== 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}} | ||
- | {{ :de: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 [[de: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. |