Technische Alternative - Varmt vand fra solen

The event control “overwrites” the speed results from other control methods. A set event
can thus block the control of absolute values or differences.
In the example, keeping the collector temperature at 60°C with the absolute value control
is blocked when the tank has already reached 55°C at the top = the fast provision of hot
water is complete and is now to be continued with full volume flow (and hence a lower temperature
but slightly better efficiency). To do so, a value that value automatically requires full
speed (such as S1 = 10°C) has to be entered as the new desired temperature in the event
control.
Waveform
Two waveforms are available for motor control. (ex works = WAVEP)
WAVEP Wave packets - only for circulating pumps with standard motor dimensions. Here,
individual half cycles are bled in to the pump motor. The pump runs on pulses and
only produces a smooth flow of the heat transfer medium when the rotor’s moment
of inertia has been overcome.
Benefit: Great dynamics of 1:10, well suited for usual commercial pumps without
internal electronics and a motor length of around 8 cm.
Drawback: Linearity depends on the pressure loss; there is some noise, not suitable
for pumps with evidently deviating motor diameters and / or length from 8
cm.
PHASE Phase angle - for pumps and ventilation motors. The pump is switched to the grid
within each half cycle at a certain point (phase).
Benefit: Suitable for almost all motor types
Drawback: Low dynamics of 1:3 for pumps. The device has to have a filter upstream
to fulfil the CE standards for interference suppression
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