Siemens Climatix Series Basis Document page 51

Parameter
Fan steps type
Parameterization
Parameter
Supply fan
Exhaust fan
Actual step
Fire mode
Fire setpoint
Slave offset
Slave start up stpt
Rundown time el htg
Min stage time
Coasting time
Siemens
Building Technologies
Range Function
Coding of digital outputs for fan control.
The number of outputs and possible Stepps (setpoints) depends on
the setting in TSP steps and also FanStep FreqConv, for analog
controlled variable speed drives.
Refer to explanation under General Operating Modes.
– Separated – On digital output per stage and fan.
– SepCombin – Separate outputs on the first step, common outputs for addi-
e tional steps.
– Outputs for the steps are binary coded. The setting is permitted
– Binary for Fan Type = direct or directVar.
Main Index > Unit > Fan Control
Functions not enabled in Configuration 1 and/or Configuration 2 are hidden.
Range Function
– Off Current supply air fan status. Go to parameter page for supply
– Stage 1 air fan.
– Stage 2
– Stage 3
– Off Current exhaust air fan status. Go to parameter page for exhaust
– Stage 1 air fan.
– Stage 2
– Stage 3
– Off Current calculated, valid stage (setpoint for control) for fans.
– Stage 1
– Stage 2
– Stage 3
Fan behavior in the event of a fire alarm:
– Stop. – Fans are off.
– RunSply – Only the supply air fan starts at the maximum enabled stage.
– Only the exhaust air fan starts at the maximum enabled stage.
– RunExh – Both fans start at the maximum enabled stage.
– Run both
0...100 [%] Output signal for fan start in the event of a fire alarm for all ana-
log controlled variable speed drives.
-999....999 [Pa] Setpoint offset for fan control mode = Supply Slv or Exhaust Slv.
0....999 [l/s] Start setpoint for fan control mode = Exhaust Slv for exhaust fan
until the supply air fan is operating. The exhaust air fan then op-
erates using the Slave Offset setpoint.
0...36000 [s] Supply air fan overrun if an electrical heating register is active.
0...999 [s] Minimum runtime for a stage prior to stepping up to the next
step.
Note: This period remains active when intervening using the op-
erator unit: Even for a direct jump from off to stage 3, the output
remains on each individual step for the minimum runtime.
0..99 [s] Coasting time when reducing each stage.
Basis Document Siemens Climatix Control System
Standard application AHU
BDCX.100820.01GB
Functions
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CE1P3977en_02
Page 51
01.02.2010