4 213 321 V01 KDT RegelModul Solar EN.docx
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70
60
50
40
30
20
10
0
ΔT 5K
DIFFoff (08-002)
ΔT 20K
DIFF (08-064)
TKO
TKOmin off
TKOmin
PS1 on
T1U
Charging free
TKO ref
ΔT 10K
DIFFon (08-001)
12.2. Solar charging
If the collector temperature at the sensor TKO is higher than the bottom sensor temperature TxU by the switch-on
difference (08-001) and greater than the minimum temperature collector (08-012), the solar pump PS1 switches on.
If the temperature difference between the TKO collector and TxU consumer sensor drops below the switch-off
difference TKO - TU (08-002), the solar pump PS1 switches off.
TKO > TKmin and TKO > TxU + DIFFon (08-001), resulting in SP1 on.
TKO < TKmin
– 5K or TKO < TxU + DIFFoff (08-002) resulting in PS1 off
The pump runs for five seconds out starting speed at 100% and then switches to control operation. So that TKOref
reaches the temperature TKO, the manipulated variable for the pump speed is calculated by PID controller.
Info temperature
00-014 Collector temperature TKO
00-016 Temperature storage tank bottom TxU
Parameter
08-012 Collector minimum temperature TKmin
08-001 Switch-on difference TKO
– TU storage tank bottom. Can be set for each consumer!
08-002 Switch-off difference TKO
– TU storage tank bottom. Can be set for each consumer!
Info output
Reference speed (manipulated variable) y solar pump PS1
