en
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Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
Arrangement 6: Solar system with 2 stores and pump logic
The controller calculates the temperature difference between collector sensor S1
and store sensors S2 and S3. If the difference is larger than or identical to the corre-
sponding adjusted switch-on temperature differences (DT1O / DT2O), one or both
solar pumps will be activated by relay 1 and / or relay 2, and the corresponding store
will be loaded until the switch-off temperature difference (DT1F / DT2F) or the
maximum store temperature (S1MX / S2MX) is reached. The priority logic causes
priority loading of the store selected in the PRIO channel, if possible. If PRIO = 0,
both stores will be loaded simultaneously.
Sensor S4 can optionally be used as the reference sensor for the store emergency
shutdown option (OSEM).
9 10
VBus
PWM 1/2
ModBus
S1
S2
R1
R2
Store 1
Store 2
S4 /
TSTT
S3
A
CCESSOR
Y ER712 7630423
