Danfoss ECL Comfort 310 Operating Manual page 76

Operating Guide ECL Comfort 310, application P330
External signal for desired flow temperature
The circuit 1 in the applications P330.1 - P330.5 and the Master
Circuit in the applications P330.6 - P330.14 can be controlled by an
external signal for desired flow temperature.
A voltage (0 - 10 V) can be applied to the input terminal S8 in order
to determine the desired flow temperature.
The measured voltage on input S8 must be converted to a
temperature value by the controller. When the voltage gets higher,
the desired flow temperature increases.
The following settings set up the scaling.
MENU > Settings > Flow temperature
Ext. desired T
Circuit
The actual desired flow temperature is indicated by the unit °C.
Read-out:
- - :
External voltage signal is not connected.
°C :
External voltage signal converted to desired flow
temperature.
Push the dial to see the graph and enter the value sets for the input
voltage (1 and 10 volt) and displayed desired flow temperature.
Desired flow temperature:
Fixed voltage settings:
Factory settings:
This means that the 'Desired flow temperature' is 10 °C at 1.0 V
and 100 °C at 10 V.
Typically, the higher the voltage, the higher the displayed desired
flow temperature.
76 | © Danfoss | 2017.08
Setting range Factory setting
None
Read-out only
10 ... 120 °C
1 V and 10 V
(1,10) and (10,100)
Example: Relationship between input voltage and displayed desired flow
temperature
Desired flow temp. (°C)
This example shows that 1 volt corresponds to 10.0 °C and 10 volt
correspond to 100 °C.
The external voltage signal must be higher than 1.0 V in order to
activate the override.
Volt
VI.GU.O3.02