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Siemens Standard application AHU CE1P3977en_02
Building Technologies Functions 01.02.2010
Main Index > Unit > Temp control > Electrical heating /
Main Index > Unit > Temp control > El Heating 2
Parameter Range Function
Controller 0...100 [%] Present value for the heating controller. Go to con-
troller settings page.
Output signal 0...100 [%] Present value for output. Go to page with all analog
output settings.
Command – Off
– Stage 1
– Stage 2
– Stage 3
Present state of electric register.
Go to page with the staged output settings.
Extra Seq setpoint 0.0...99.0 [°C] For El Heating 2 only:
Setpoint for additional stand-alone heating register.
Alarm – Ok
– alarm
Register alarm state.
Go to page with digital inputs.
Start stage 1 0...100 [%] Controller heat demand to start the first stage.
Start stage 2 Start stage 1...100 [%] Controller heat demand to start the second stage.
Start stage 3 Start stage 2...100 [%] Controller heat demand to start the third stage.
Stage hys off 0...Start stage 1 [%] Shutdown hysteresis of the stages. See example.
Max limitation fan Go to Max fan limitation page to parameterize the
register output limitation by fan output.
Start stage 1 = 20 % Off Stage 3: 50 %
Start stage 2 = 40 % Off Stage 2: 30 %
Start stage 3 = 60 % Off Stage 1: 10 %
Stage hys off = 10 %
5.9.2 Max limitation fan
Electric heating register is enabled.
Main Index > Configuration > Configuration 1 > Electrical heating <> No
Main Index > Configuration > Configuration 1 > El heating 2<> No
Main Index > Unit > Temp control > Electrical heating > Max limitation fan
Main Index > Unit > Temp control > El heating 2 > Max limitation fan
Parameter Range Function
Set the maximum allowable electric register output for the
given active fan stage. The value limits the maximum possible
control heat demand. The settings depend on electric register
and fan output. Must be clarified with the manufacturer as re-
quired!
Fan stage 1 0...100 [%] Allowed electric register output when the fan is operating on
stage 1 or using the setpoint with the setpoint for stage 1.
Fan stage 2 0...100 [%] Allowed electric register output when the fan is operating on
stage 2 or using the setpoint with the setpoint for stage 2.
Fan stage 3 0...100 [%] Allowed electric register output when the fan is operating on
stage 3 or using the setpoint with the setpoint for stage 3.
Fan stage1 = 30 %
Start stage2 = 40 %
In this case, the controller output for fan state 1 is limited to 30%. So that the
switch-on point of 40% for electric register stage 2 is never achieved.
Parameterization
Example of shutdown
hysteresis
Prerequisite
Parameter
Example
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 78
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