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Siemens  Standard application AHU  CE1P3977en_02 
Building Technologies  HMI  01.02.2010 
Ext control input  External Control Inputs for Operating Mode  No 
One 
Two 
  No    4   
Alarm outputs  Number of Outputs for alarms 
One = 1 Output for High or/ High and Low 
Two = 2 Outputs, High and Low 
No 
One 
Two 
  No    4   
External setpoint  External setpoint Input Type 
Volt = 0…10 V DC 
Ohm = 0…2500 Ohm 
No 
Volt 
Ohm 
QAA27 
BSG21 
  No    4   
 
Main Index > Configuration > Configuration 1 --- Sensors 
Parameter  Function  Value range  Unit  Standard  R  S  Link 
Room tmp sensor  Number and Combination of Room Sensors 
(Room Unit is not integrated yet) 
No 
1 sensor 
2 sensors 
1 RU 
1snsr+ RU 
2 RU 
  No    4   
Exhaust tmp sensor  Exhaust Temperature Sensor 
 
Yes+Hold = max Value is stored 
No 
Yes 
Yes+Hold 
  No    4   
Supply tmp sensor  Supply Temperature Sensor  No 
Yes 
  Yes    4   
Outsi air tmp sensor  Outside Temperature Sensor 
Yes+Hold = min Value is stored (only 
needed if Sensor is mounted in the duct) 
No 
Yes 
Yes+Hold 
  No    4  Section: 
 0 
Room hum sensor  Room Humidity Sensor  No 
Yes 
  No    4   
Supply hum sensor  Supply Humidity Sensor  No 
Yes 
  No    4   
Outs air hum sensor  Outside Humidity Sensor  No 
Yes 
  No    4   
 
Main Index > Configuration > Configuration 1 --- Functions 
Parameter  Function  Value range  Unit  Standard  R  S  Link 
Damper  Kind of mounting and amount of Damper  
Combined = only one Output for both 
Dampers 
Supply = only Supply Damper 
Supply+Exh = both Damper with seperate 
Outputs 
No 
Combined 
 
Supply 
Supply+Exh 
  No    4   
Exhaust fan  Exhaust fan 
 
Combined = both Fans use the same 
Outputs 
No 
Yes 
Combined 
  Yes    4   
Fan control mode  Controlmode for the Fans 
Direct and DirectVar are Stepwise working 
Fans 
Fixed Speed is a VSD with fix Analog Steps 
( 2; 4;8 VDC) 
Pressure controlled VSD 
Flow controlled VSD 
Pressure controlled Master Slave (Supply = 
Slave) 
Pressure controlled Master Slave (Exhaust = 
Slave) 
Direct 
DirectVar 
 
FixedSpeed 
 
Pressure 
Flow 
SupplySlv 
 
ExhaustSlv 
  Direct    4   
Tmp control mode  Control Modes from the Temperature 
Supply controlled 
RoomSupplyCascade 
Return SupplyCascade 
RoomSupplyCascade in Summer, Supply in 
Winter 
ReturnSupplyCascade in Summer, Supply in 
Winter 
Room controlled 
Return controlled 
 
Supply 
RmSplyC 
RtSplyC 
RmSplyC Su 
 
RtSplyC Su 
 
Room 
Return 
  Supply    4  Section: 
 0 
Hrec damper  Heat recovery Dampers 
Normal=100% full Hrec 
Invers = 0% full Hrec 
No 
Normal 
Inverse. 
  No    4   
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 179