General; Intended Use; Integrating The Fronius Smart Meter; Description Of The Device - Fronius Ohmpilot Instructions De Service

General

Intended use

With its "24 hours of sun" vision, Fronius is aiming to offer its customers solutions for ge-
nerating, storing, distributing and using energy in an intelligent and cost efficient manner.
The use of surplus energy for hot water preparation constitutes a simple option, with low
investment costs, for storing electricity in the form of heat and using it at a time of the
customer's choosing.
The Fronius Ohmpilot, which carries out precisely this task, is therefore an ideal addition
to the Fronius product portfolio in the area of energy management and a further step
towards "24 hours of sun".
Components of The solution as a whole consists of the following components:
the solution as a -
whole
-
-
-
Integrating the A Fronius Smart Meter is required to operate the Ohmpilot so that the surplus energy
Fronius Smart can be measured. On the inverter website, it must be set whether the Fronius Smart Me-
Meter ter is installed at the feed-in point or in the consumption branch.
Description of the The Ohmpilot is a separate device that can control the surplus power from the PV sys-
device tem in a continuously variable manner using pulse width modulation for a phase between
0 and 100% (or 0 and 3 kW). In addition, the Ohmpilot has 2 additional outputs for swit-
ching further phases. This means that heating elements with an output of 300 W to 9 kW
can be controlled in a continuously variable manner.
A heating element with up to 3 kW output can be controlled in a continuously variable
manner using one phase.
For a heating element with 9 kW output, the surplus power of 0 - 3 kW is controlled in a
continuously variable manner in phase 1. If even more power is available, the Ohmpilot
also activates phase 2 and phase 1 can again control the surplus in a continuously varia-
ble manner between 3 – 6 kW. If the available power is higher than 6 kW, the Ohmpilot
also activates phase 3 and phase 1 can again control the surplus in a continuously varia-
ble manner between 6 and 9 kW.
Power range
0 - 3 kW
3 - 6 kW
6 - 9 kW
Fronius SnapInverter or GEN24 series inverters
- Fronius Symo / Galvo / Eco or Primo (from Fronius Datamanager 2.0 software
version 3.8.1-x or higher) or Fronius Symo Hybrid (from Fronius Hybridmanager
software version V1.8.1.x onwards)
- Fronius Primo / Symo GEN24
Fronius Smart Meter
Fronius Ohmpilot
Resistive load (e.g. boiler with heating element)
Phase 1
0 - 3 kW conti-
nuously variable
0 - 3 kW conti-
nuously variable
0 - 3 kW conti-
nuously variable
Phase 2 Phase 3
- -
3 kW fixed -
3 kW fixed 3 kW fixed
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