10.2.4 Temperature Setpoint and Feedback
ID
Object name
R/W
Description
MV,0
Config Temp Setpoint Source
[Enum]
R/W
This selects the source of the temperature setpoint.
1: default_setpoint
2: ana_temp_setpoint
3: temp_setpoint_remote
4: outdoor_temp
5: outdoor_temp_remote
6 and above: reserved
•
1: Default. Relates to AO,2 (Set Bus Temperature Feedback [°C]).
•
2: Relates to setpoint from analog input terminals.
•
3: Relates to AO,0 (Set Temperature Setpoint Remote [°C]).
•
4: Associated with an analog sensor connected to the product and
objects:
- AV,4 (Config Heat curve offset (+/-) [°C])
- AV,5 (Config Heat curve slope (+/-) [-]).
•
5: Associated with objects:
- AO,1 (Set Outdoor Temperature Remote [°C])
- AI,1 (Data Outdoor Temp Remote [°C])
- AV,4 (Config Heat curve offset (+/-) [°C])
- AV,5 (Config Heat curve slope (+/-) [-])
•
6 and above: Associated with AO,3 to AO,8 (external sensor inputs).
For all options, the actual temperature setpoint used by the algorithm can be
read at AI,2 Data Act Temp Setpoint.
Configuration of analog input must happen via Grundfos GO Remote.
AO,0
Set Temperature Setpoint
Remote [°C]
W
Temperature setpoint via fieldbus.
Enabling:
•
Set MV,0 (Config Temp Setpoint Source [Enum]) to 3
•
Set BO,0 (Set Control Source) to 1.
AI,0
Data Temp Setpoint Remote
[°C]
R
Actual value of remote temperature setpoint.
AO,1
Set Outdoor Temperature
Remote [°C]
W
Outdoor temperature value via fieldbus.
Enabling:
•
Set MV,0 (Config Temp Setpoint Source [Enum]) to 5
•
Set BO,0 (Set Control Source) to 1.
AI,1
Data Outdoor Temp Remote
[°C]
R
Actual value of remote outdoor temperature.
AV,4
Config Heat curve offset (+/-)
[°C]
R/W
Adjusts the heat curve offset in degrees Celsius. It is used when MV,0 = 4 or
MV,0 = 5.
AV,5
Config Heat curve slope (+/-)
[-]
R/W
Adjusts the slope of the configured heat curve.
1 equals the configured heat curve, and 1.5 equals the configured slope
multiplied by 1.5.
BI,13
Heat Curve Slope Factor
Enabled
R
0: False
1: True
Used to indicate whether base curve is linear or non-linear.
BI,14
Heat Curve Offset Range
Exceeded
R
0: Exceeded
1: Not exceeded
Used to indicate that heat curve offset value is out of range [-15 ; 15].
BI,15
Heat Curve Slope Factor
Range Exceeded
R
0: Exceeded
1: Not exceeded
Used to indicate that heat curve slope factor value is out of range [0.4 ; 2.0].
AV,6
Config Default Temp Setpoint
[°C]
R/W
Fall back temperature setpoint in case setpoint signal from bus or sensor is
lost.
Default: 40 °C.
AI,2
Data Act Temp Setpoint [° C]
R
Actual temperature setpoint used in temperature controller.
If the limiter function is set to off, it is the same as the actual reference
temperature derived from the set reference temperature mode via MV,0.
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