Siemens AVS75.39 Series User Manual page 165

Siemens
Building Technologies
Cons demand CC1 10V and
Cons demand CC2 10V (analog input)
The controller receives a voltage signal (DC 0...10 V) for heat demand (flow
temperature) for consumer circuit 1 or 2.
The required flow temperature is calculated via the linear characteristic which is
defined by 2 fixed points (input value 1/function value 1 and input value 2/function
value 2).
A constant temperature request via the contact occurs using the setting "Cons
request 10V CC1 and CC2".
Pressure measurement 10V (Analog input)
The controller receives the pressure signal in the form of voltage signals (DC
0...10 V).
The respective pressure value is calculated via the linear characteristic which is
defined by 2 fixed points (input value 1 / input value 1 and input value 2 / function
value 2).
If the pressure value crosses one of the set limit values, an error or maintenance
message is delivered. If the value falls below the critical pressure limit (burner), the
boiler is shut down.
The values of the maximum, minimum and critical water pressure for H1 can be set
under line 6140...6142, for H2 under line 6150...6152, and for H3 under line
6180...6182.
Relative room humidity 10V (Analog input)
The controller receives the relative humidity signal in the form of voltage signals
(DC 0...10 V).
The respective room humidity is calculated via the linear characteristic which is
defined by 2 fixed points (input value 1 / input value 1 and input value 2 / function
value 2).
The controller compares room humidity with the limit values set on operating lines
6137 and 6138 and switches external air dehumidifier K29 connected to an
appropriately defined output QX1 – QX5 (5890 – 5895).
Room temperature 10V (Analog input)
The controller receives the room temperature signal in the form of voltage signals
(DC 0...10 V). The room temperature in connection with relative room humidity is
used to calculate the dewpoint temperature in the cooling circuit.
If there is no room unit with a room sensor (BSB) connected for heating / cooling
circuit 1, the room temperature measured at Hx is also used for room heating /
cooling 1 (variant with compensation and room influence).
The respective room temperature is calculated via the linear characteristic which is
defined by 2 fixed points (input value 1 / input value 1 and input value 2 / function
value 2).
Flow measurement 10V (Analog input)
The controller receives the measured flow as a voltage signal (DC 0...10 V).
The respective flow is calculated via the linear characteristic which is defined by 2
fixed points (input value 1/function value 1 and input value 2/function value 2).
User manual RVS43.345
The settings in detail
165 / 239
CE1U2354en_021
2013-09-02