Using Multiplus II Assistant/s To Turn Off Charging at Peak Rates

DIY
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For the benefit of anyone else with a Liberty 116 smart meter, also trying to get their head around how much money they are paying for what electricity (bearing in mind this meter can have as many as 4 different outputs and 2 different ‘registers’ for counting energy in and out) I have managed to get this diagram of the internal wiring of switches/outputs/registers from the meter maker, Secure (Securemeters.com)…

Secure smart meter Liberty 116 - internal switches:outputs:registers wiring
Secure smart meter Liberty 116 - internal switches:outputs:registers wiring1800×1382 181 KB

Register E1 is the Primary register and in my case appears to be on Octopus Flex tariff and E2 (which has 2 separate sub-registers E2-01 and E2-02) is on Intelligent Octopus Go. As you can see from the diagram above, outputs 6 and 7 are connected to the E2 register (IOG) and output 4 is connected to the E1 register (Flex - output 5 is blanked off in my case).

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if you still want to use assistants and timer rather than ESS then you can set the general flag when aux input is closed and ignore ac input when the flag is set.

You need to set up a relay assistant, use general flag, turn on (virtual) relay, ie: set the flag, when aux input >4v (timer contacts open), turn off relay when aux input <2v (timer contacts closed).

then set up a general flag assistant to ignore ac input.

this will ignore the grid when the timer contacts are open and allow the grid in when the timer contacts are closed.

The inverter will then never export to grid, but will pass the grid to the loads and charge the battery during timed periods.