Technical Manual
Glass Room Temperature Controller Smart SCN-RTRGx.02
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
•
Germany
Phone: +49-2263-
880 • [email protected] • www.mdt.de
50
50
4.4.2.11 Limit temperature of cooling medium
Important:
This parameter is only available in "Cooling" mode!
The following settings are available for this parameter:
Figure 21: Settings
–
Limit temperature of cooling medium
The following table shows the setting options for this parameter:
ETS-Text
Dynamic range
[Default value]
Comment
Limit temperature of
cooling medium
▪
not active
▪
active via threshold comparison
(2Byte)
▪
active via dew point alarm (1Bit)
Selection of how the
temperature is to be limited.
Minimum
temperature cooling
medium
0
…
60 °C
[10 °C]
Definition of a minimum
temperature.
Only visible with
“threshold comparison
2byte
”
Table 50: Settings
–
Limit temperature of cooling medium
With monitoring "
active via dew point alarm (1 bit)
", the cooling control value is set to 0% when a
"1" is received for the dew point alarm. If the alarm is cancelled when a "0" is received, the
controller goes into normal operation and to the corresponding control value.
With the setting "
active via threshold value comparison (2 Byte)
", the control value for cooling
mode can be limited. This requires a second sensor in the room where a lower temperature is
expected than the room temperature. Its measured value is connected to object 25. If this
measured value falls below the set "
Minimum temperature cooling medium
", the control value is
successively reduced. This ensures that less cooling takes place to avoid condensation on the
surface.
The following table shows the corresponding objects:
Number Name/Function
Length Usage
25
Surface temperature Cooling
–
Receive measured value
2 Byte Receive an external measured value.
Displayed when active via 2Byte object
25
Dew point alarm
–
Receive alarm
1 Bit
Receiving the dew point alarm.
Displayed if active over 1Bit object
Table 51: Communication object
–
Limit temperature of cooling medium
