Siemens POL638 Series

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Siemens Standard application AHU CE1P3977en_02
Building Technologies Detail pages: Controller 01.02.2010
Parameter Range Function
Status
− GESP
− UL
− LL
− REG
− UDEF
Controller status:
− Controller disabled.
− Control output = High limit.
− Control output = Low limit.
− Control mode.
− Undefined.
Special settings Go to Special settings page (at access levels 4
and 2 only).
7.2.2 Special settings
Parameter Range Function
Gain 0...1000 − Amplification factor (KP).
Int action time 0….18000 [s] Integral action time (Tn).
Min/max limit -64.0…99.0 [°C] / [% rH] Adjusts high und Low limits to end position. En-
sures the difference between heating and cool-
ing output in the end position as well as needed.
Min/max limit positiv:
− Niedrigster Control output clg = Low limit + Min/max limit
− Niedrigster Control output htg = Low limit
Min/max limit negativ:
− Niedrigster Control output clg = Low limit
− Niedrigster Control output htg = Low limit - Min/max limit
Min/max limit positiv:
− Niedrigster Control output clg = High limit
− Niedrigster Control output htg = High limit - Min/max limit
Min/max limit negativ:
− Niedrigster Control output clg = High limit + Min/max limit
− Niedrigster Control output htg = High limit
High limit = 28
Low limit = 16
Min/max limit = -2
Cooling:
− Lowest control output clg = Low limit => 16.
− Lowest control output htg = Low limit - Min/max limit => 16 – 2 = 14.
Heating:
− Lowest control output htg = High limit + min/max limit => 28 – 2 = 30.
− Lowest control output htg = High limit => 28.
Function during cooling
Function during heating
Example
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 113