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Parameter setting
Sensors Mini-Sewi KNX TH-L-Pr and Mini-Sewi KNX L-Pr
• Version: 30.08.2018 • Technical changes and errors excepted.
6.13.1. Cooling medium temp. monitoring
A threshold value can be set for the temperature of the coolant, which is based on the
current dewpoint temperature (offset/deviation). The switching output of the coolant
temperature monitoring system can provide a warning prior to any build-up of conden-
sation in the system, and/or activate appropriate countermeasures.
Threshold value
Threshold value = dewpoint tempe offset
Set, in which cases
offset
received via object is to be retained. Please note that the set-
ting "After power supply restoration and programming" should not be used for the in-
itial start-up, as the factory settings are always used until the first communication (set-
ting via objects is ignored).
During initial commissioning, an
offset
must be defined which is valid until the first
communication of a new offset. For units which have already been taken into service,
the last communicated offset can be used.
A set offset will be retained until a new value or a change is transferred. The current
value is saved, so that it is retained in the event of a power supply failure and will be
available once the power supply is restored.
Maintain the
offset received via communication object
• never
• after power supply restoration
• after power supply restoration and
programming
.
Start offset in °C
valid until first communication
0...200; 30
Increment for offset change
0.1°C • 0.2°C • 0.3°C • 0.4°C • 0.5°C • 1°C •
2°C • 3°C • 4°C • 5°C
Hysteresis setting
in % • absolute
Hysteresis of the threshold value in %
(for setting in %)
0 ... 50; 20
Threshold value hysteresis in 0.1°C
increments
(at absolute setting)
0 ... 1000; 50
Threshold value sends
• never
• periodically
• on change
• on change and periodically
At and above change of
(if sent on change)
0.1°C • 0.2°C • 0.5°C • 1.0°C • 2.0°C • 5.0°C
Send cycle
(if sent periodically)
5 s • 10 s • 30 s • 1 min • … • 2 h
