1-phase heating element up to 3 KW / 3-phase
heating element and circulation pump
Application ex-
ample 7
L1 L2 L3 N L3 N L2 N NC W OUT NNO
R2 R3
LAN
RS485
PT1000
max. 16A
External earth
(PE)
(3)
(8)
(6)
(2)
(10)
(9)
(7)
(4)
(5)
(1)
(1)
(1) Ferrite rings (included in scope of delivery)
(2) Temperature sensor PT1000
(3) Hot water boiler
(4) Heating element
NOTE!
1-phase and 3-phase heating element
This function can be implemented with a 1-phase and 3-phase heating element.
(5) Circulating pump auxiliary relay
NOTE!
Circulating pump run-on time
At the end of the heating operation, the circulating pump is active for 60
seconds.
(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
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.
35
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