Installation Instructions

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Siemens Desigo Desigo Room automation - Engineering, mounting and installation CM111043en_14
Smart Infrastructure Electrical features of inputs & outputs 2020-10-30
Summary: The maximum overall load is calculated as follows:
Highest load at one of the Triacs with motorized or thermal actuator
+ Load at digital outputs
+ Load a field supply
1)
Examples Triac
Example 1:
DXR2x10.., 09T
Example 2: DXR2.x10.., 09T
Use
Type
Signal
Load
Use
Type
Signal
Load
4)
Fan coil heating STP73 PWM 2,5 W / (6 VA) Radiator 1
2)
STP73 PWM
5...50%
2,5 W / (6 VA)
Chilled ceiling STP73 PWM 2,5 W / (6 VA) Radiator 2
2)
STP73 PWM
5...50%
2,5 W / (6 VA)
Outside air damper GEB131.1E 3-Punkt 4 VA Chilled
ceiling 1
3)
STP73 PWM
5...50%
2,5 W / (6 VA)
Chilled
ceiling 2
3)
STP73 PWM
5...50%
2,5 W / (6 VA)
Overall load
4 VA / (6
VA)
2,5 W / (6 VA)
Example 3: DXR2.x09
Use Type Signal Load
Radiator
4 x SSA81 3-Pt 4 x 0.8 VA
Chilled ceiling
4 x SSA81 3-Pt
4 x 0.8 VA
Overall load
3.2 VA
Example 4: DXR2.x09
Use Chilled/heated ceiling
Type
Signal
Load
6
-
port control ball valve
GDB116.9E 0…10 V
3 VA
Condensation monitor QXA2100 DI 1 VA
Overall load
4 VA
Examples DC 0…10 V
Example 5: DXR2x09 Example 6: DXR2.x09
Use
Type
Signal
Load
Use
Type
Signal
Load
5)
Fan coil heating
SSB61 DC 0...10 V 2,5 VA
Radiator
STP63 DC 0...10 V 2,5 W / (6 VA)
Outside air damper GLB161.1E DC 0...10 V 3 VA Chilled
ceiling
STP63 DC 0...10 V 2,5 W / (6 VA)
Digital output
Relay BO 0,5 VA
Overall load
3,5 VA
2,5 W / (6 VA)
1)
Field supply:
– DXR2.x09: Terminal 73 (on the output's side)
– DXR2.x09T: Terminal 72 + 75 (on the output's side)
A higher field supply load may be covered by an external AC 24 V transformer.
For triacs this solution is not admissible.
2)
Radiator: Note! In the case of downdraft compensation, the application may cool
and heat at the same time (cooling because of high internal load, heating to
stop cold air from falling down along the cold window). PWM 5-50 only is
admissible.
3)
In this case downdraft compensation is not admissible, because 2 thermal
actuators are already used for chilled ceiling OR radiator.
Note! The I/O choice does not prevent such a choice.
4)
Short time load 6 VA for cold thermal actuators.
5)
Short time load 6 VA for synchronization run at startup.
Overall load
: