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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  Configuration  01.02.2010 
15.3.2  Temperatures 
 
The listed hard assignments are possible for all temperature sensors. 
HW IO  Pos  Type 
Supply, Room 1, Room 2, 
Exhaust, ... , Auxiliary 
NUsd, Comm, X1...X8, X11...X18, 
X21...X28 
Pt1k, Ni1k, Ni1kLG, NTC10K 
 
•  Supply air 
•  Room 
•  Room 2 
•  Exhaust air 
•  Outside air 
•  Heating frost 
•  Extract air 
•  Heat recovery water 
•  Hrec supply air 
•  Supply air 2 (extra supply air temperature, if heating 2 or Cooling 2 to us 
comming. 
•  Heating 2 frost 
•  Auxiliary (additional connectable temperature) 
 
Position  Explanation 
X1...X8  Terminal on basis controller. 
X11...X18  Terminal on extension module 1. 
X21...X28  Terminal on extension module 2. 
Comm  Sensor is connected via communication and therefore does not oc-
cupy a hardware input. Some sensors can also be connected via 
communication (see lists in the documentation on the basics for 
LON, ModBus, BacNet). 
Sensors may also be enabled in parallel as well (via hardware and 
communication). 
The value selector must be set accordingly when enabling via com-
munication (for details page on Analog Inputs, Sec. 
 6.5.2.). 
NUsd  No used: The hardware position is not yet selected. The plant is 
locked against switching on if an enabled sensor is set to NUsd and 
the following fault issued: NotConfigured (Function enabled, but 
hardware not assigned). 
 
The following sensor types are possible for all temperature sensors. 
•  Pt1k: Platin 1000 Ohm 
•  Ni1k: Nickel 1000 Ohm 
•  NTC10K: NTC 10 kOhm 
•  Ni1kLG: Nickel 1000 Ohm LG (SBT) 
 
 
15.3.3  Pressures / flows 
 
The listed hard assignments are possible for all pressure and flow sensors. 
HW IO  Pos  Fact (K-Faktor)  Scale (x Pa bei 10 V) 
Supply pressure  NUsd...X28  ---  0...5000 
Return pressure  NUsd…X28  ---  0…5000 
Supply air flow  NUsd…X28  0.00…99.90  0…5000 
Exhaust air flow  NUsd…X28  0.00…99.90  0…5000 
Hrec frost pressure  NUsd…X28  ---  0…5000 
Temperature measure-
ments 
Terminal positions 
Sensor types 
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 168