Activate switch when there is solar excess production

[sovking]

Hi all,
I would like to use event for activate a switch connected to a load (my PDC) when there is solar production.

I'have already:

• configured a switch that succesfully control PDC;
• configured an utility sensor where I read when I have an instant solar excess production. Such sensor shows current power watts which is < 0 when I export energy and is > 0 when I import energy.

I have tried to configure an event but I'm not satisfied.

I would like to implement through events such automatic behaviour

• Switch on the PDC when there is power is < -1000 (I'm exporting energy with instant power of at least 1000 Watt)
• Keep the PDC on even if instant power is > -1000 for at least 3 hours.
• Switch off the PDC when the istant power is > 1000 and at least 3 hours have elapsed from last power on.

Second objective:
Set up a virtual selector switch to manage the following behaviour:

• Force the PDC switch to OFF.
• Automatic PDC switch as described above.
• Force the PDC switch to ON

[jannl]

Basically this looks quite easy in lua, so what is your question?

[sovking]

Lua is necessary or it can be done using just Events/blocky ?

The automatic behaviour implemented with blocky miss the part "run at least for 3 hours".
Then I don't know to implement Automatic/Force switch.

There is any way to use the existing interface to do this ? Or I have to to everything with Lua ?
Is better to use Lua or dzEvents for this task ?

Any suggestion about such Lua scripts ? Or any pointer to similar script already posted in this forum ?

Thanks