1-phase heating element up to 3 kW and external
source
Application ex-
ample 4
L1 L2 L3 N L3 N L2 N NC W OUT NNO
R2 R3
LAN
RS485
PT1000
max. 16A
(2)
(8)
(6)
(1) (3)
(10)
(9)
External earth
(PE)
(4)(5)(5) (7)
(1) Temperature sensor PT1000
(2) Hot water boiler
(3) External source (e.g. gas-fired heating)
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.
(4) Heating element (max. 3 kW)
(5) Ferrite rings (included in scope of delivery)
(6) Output up to 3 kW variable, max. 13 A resistive load, spring-loaded ter-
minal 1.5 - 2.5 mm
2
(7) Multifunctional relay output
(8)
Input - grid supply 1x 230V network, spring-loaded terminal 1.5 - 2.5 mm
2
WARNING!
Short circuit
If live, stripped wires touch each other, a short circuit will occur.
▶
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 the individual wires together with a cable tie
immediately before the terminal.
(9) Residual-current circuit breaker
(10) Automatic circuit breaker max. B16A
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 ad-
justs any surplus energy that is available to zero. Specifically, this takes place by
continuously adjusting the heating element connected to the Ohmpilot. Surplus
energy is consumed using the heating element in a continuously variable manner.
29
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