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Siemens Standard application AHU CE1P3977en_02
Building Technologies Functions 01.02.2010
Parameter Range
Outs air tmp X2 0.0...50.0 [°C] Upper design temperature.
Output signal Y1 0...100 [%] Value for lower design temperature.
Output signal Y2 0...100 [%] Value for upper design temperature.
Pre htg on time 0...600 [s] Time to preheat lines and register.
Min off time 0.0...1400.0 [min] Minimum off time for the function after preheating is
completed.
5.9 Electrical heating / Electrical heating 2
5.9.1 General
Electrical heating / Electrical heating 2 are enabled and preconfigured in configura-
tion 1, configuration 2 and configuration I/Os.
Main Index > Configuration > Configuration 1
Parameter Range Function
Electrical heating /
El Heating 2
– No
– Analog
– No (additional) electric register.
– (Additional) electric register with analog con-
trol.
– 1Step (Additional) single-stage electric heating register.
– 2Steps (Additional) two-stage electric heating register.
– 3Steps (Additional) three-stage electric heating register.
Main Index > Configuration > Configuration 2
Parameter Range Function
El Htg alarm /
El heating 2 alarm
– No
– Alarm
– No alarm.
– With alarm.
El heating 2 control – StandAlone
– InSequence
– Not integrated in sequence.
– Integrated in sequence.
Both electric registers can be deployed with up to 3 stages (binary). An alarm is
possible for each register. Register output is limited by fan out, which prevent the
register from overheating. The additional electric heating register can be operated
as a separate register with its own setpoint.
The electrical heating register is forced off if:
– Night unoccupied (temperaturstart) cool
– Summer night cooling
A maximum of one of the two additional registers Heating 2 or El heating 2 can be
integrated into the temperature control sequence.
The stages are controlled as follows for electric heating registers:
DO1 DO2
Off
0 0
Stage1
1 0
Stage2
0 1
Stage3
1 1
Prerequisite
Enable electric register
Configuration
Function
Note
Stage control
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 77
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