Basic Documentation

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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Inputs 03.10.2011
8.3 Special analog inputs
The following analog inputs provide advanced, special functions:
 Supply air temperature
 Room temperature
 Extract air temperature
 Outside temperature
The additional functionality of identifier "Frost protection", "Frost protection unit 1, 2
and 3", "[Controller 1, 2 and 3] rem setp adj" are described in the sections below.
The following table describes the effect of one or several input identifiers
connected at the same time.
The input identifiers are assigned automatically to controller 1.
Input identifiers Effect
"Supply air temperature"
(no room temp via bus)
Supply air control.
No sustained mode, no night ventilation
"Room temperature" or Room temp via bus Room temperature control.
Sustained mode and night ventilation by "RT"
"Extract air temperature"
(no room temp via bus)
Extract air temperature control.
No sustained mode, no night ventilation
"Supply air temperature"
+
"Room temperature" or Room temp via bus
Cascade control by room temperature or supply air
temperature control
(depending on casc./const. changeover input or combination
heating/ventilation.
Sustained mode and night ventilation by "RT"
"Supply air temperature"
+
"Extract air temperature"
(no room temp via bus)
Cascade control by extract air temperature or supply air
temperature control
(depending on casc./const. changeover input or combination
heating/ventilation.
No sustained mode, no night ventilation
"Supply air temperature"
+
"Room temperature" or Room temp via bus
+
"Extract air temperature"
Cascade control by extract air temperature or supply air
temperature control
(depending on casc./const. changeover input or combination
heating/ventilation.
Sustained mode and night ventilation by "RT"
"Room temperature" or Room temp via bus
+
"Extract air temperature"
Extract air temperature control.
Sustained mode and night ventilation by "RT"
The special properties and effects of outside or room temperature are described in
the sections below.
Note