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EB 5573 EN
System-wide functions
8.9 Releasing a control circuit/controller with binary input
The release of an individual control circuit or the controller with the binary input only be-
comes effective when the respective control circuit is in automatic mode ( icon). The re-
leased control circuit always works in automatic mode; the deactivated control circuit be-
haves as if it were transferred to stand-by mode ( ). Control operation remains active, how-
ever, in any case for processing an external demand. The control circuit can be released by
the binary input when the binary input is either a make contact (BI = 0) or a break contact
(BI = 1).
−
In systems with downstream heating circuit without a valve (Anl 2.x, 4.x), BI1 only influenc
-
es the operation of this heating circuit.
−
In system Anl 3.0, BI1 influences the operation of the entire controller (except for process
-
ing an external demand).
Functions
WE
Configuration
Release HC1 at input BI1
0
bE = 1
CO1 > F14 - 1
bE = 1, bE = 0
Release controller HC2 at input BI2
0
bE = 1
CO2 > F14 - 1
bE = 1, bE = 0
Release controller at input BI1
0
1
CO5 > F15 - 1
bE = 1, bE = 0
8.10
Speed control of the charging pump
This function allows the delivery rate of the charging pump in systems with buffer tank
(CO1 > F21-1) and in systems with DHW storage tank (CO4 > F21-1) to be varied based on
the temperature. When this function is activated, the input SF2 is automatically activated. In
combination with CO1 > F06 - 0 or CO4 > F02 - 0, this input is only used for speed control
and not to stop the storage tank charging.
All storage tank charging actions start with the minimum delivery rate of the charging
pumps. As soon as the charging temperature is nearly reached, the delivery rate of the
charging pump is increased and the valve controls the flow rate. If the charging temperature
drops 5 °C below its associated set point, the delivery rate is reduced again. At the latest
when the temperature at SF2 has reached the 'Start' value to reduce the delivery rate, the lin-
ear reduction of the delivery rate based on the temperature at SF2 starts. If the temperature
at SF2 reaches the 'Stop' value to reduce the delivery rate, the charging pump runs again at
Note
Summary of Contents for TROVIS 5573
Page 144: ...144 EB 5573 EN Key number 1732...
