Fronius Ohmpilot Operating Instructions Manual page 102

(1)
Short circuit
If current-carrying stripped wires touch each other, a short circuit is triggered.
▶
▶
▶
(2)
(3)
(4)
(5)
(6)
NOTE!
Relay contacts can oxidise.
The voltage must be at least 15 V and the current at least 2 mA, so that the relay
contacts do not oxidise.
(7)
(8)
(9)
(10)
The Fronius Smart Meter records the current power at the feed-in point and
transfers the data to the inverter. By controlling the Ohmpilot, the inverter adjus-
ts any surplus energy that is available to zero. In detail, this takes place by conti-
nuously adjusting the heating element connected to the Ohmpilot. Surplus ener-
gy is consumed using the heating element in a continuously variable manner.
The temperature is measured by the Ohmpilot. If the temperature falls below the
minimum, then an external source (e.g. gas boiler) will be activated until the mini-
mum temperature is reached again, so that the Ohmpilot only uses surplus ener-
gy and does not draw any energy from the grid.
The maximum temperature must be set on the heating element thermostat. If
the heating element does not have a thermostat, the Ohmpilot can also carry out
this task as an alternative (see chapter
The heating element is used for the legionella prevention program.
This function can also be combined with a 3-phase heating element.
102
INPUT - grid supply 1x 230 V network, spring-loaded terminal 1.5 - 2.5
2
mm
WARNING!
Carry out all connection work in accordance with the applicable electrotech-
nical guidelines and regulations.
Observe the maximum stripping length of 10 mm.
When connecting the phases, tie together the individual wires with a cable tie
directly in front of the terminal.
Multifunctional relay output
OUTPUT up to 3 kW variable, max. 13 A resistive load, spring-loaded ter-
2
minal 1.5 - 2.5 mm
Hot water boiler
Temperature sensor PT1000
External source (e.g. gas boiler)
Heating element (max. 3 kW)
Residual-current circuit breaker
Automatic circuit breaker max. B16A
Ferrite (included in scope of supply)
Optional settings on page 122).