Siemens Climatix Series - Page 112

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Siemens Standard application AHU CE1P3977en_02
Building Technologies Detail pages: Controller 01.02.2010
7.2.1 General
The details page for cascade controllers can be reached multiple ways, including:
– Main Index > Unit > Temp control > Cascade controller
– Main Index > Unit > Humidity control > Cascade controller
– Main Index > Unit > Loop controllers > Casc controller tmp
– Main Index > Unit > Loop controllers > Casc controller hum
Parameter Range Function
Control output clg Present controller output for cooling setpoint or
dehumidification setpoint.
Control output htg Present controller output for heating setpoint or
humidification setpoint.
Present Value Present actual value (input value) for the control-
ler.
Room stpt clg/dehum Cooling or dehumidification setpoint from the
program.
Room stpt htg/hum Heating or humidification setpoint from the pro-
gram.
High limit -64.0 …99.0 [°C] / [% rH] Maximum supply air temperature or humidity.
Low limit -64.0…99.0 [°C] / [% rH] Minimum supply air temperature or humidity.
Load compensation -64.0…99.0 [°C] / [% rH] Set compensation for a room load. Calculates
the present controller outputs as follows:
− Control output clg = Internally calculated Con-
trol Output clg + Load compensation
− Control output htg = Internally calculated
Control Output htg + Load compensation
Setpoint selection − Htg+Dz
− Htg/Clg
− +/-Half Dz
− Clg-Dz
Displays setpoint variants in the program (Con-
figuration 2 >Tmp stpt selection or Hum stpt se-
lection).
Setpoint dead zone From the entry of calculated dead zones. (Dis-
plays dead zones: Configuration 2 >Tmp stpt
selection or Hum stpt selection).
Enable.
− Passive
− Active
Enable controller:
− Controller disabled.
− Controller enabled.
Fault
− Passive
− Active
Controller fault status (e.g. faulty sensor signal):
− No error.
− Error pending. Does not trigger an event,
since the cause of a control fault must be re-
corded separately (e.g. room sensor fault).
Access
Parameter
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 112