Catalog

4-5
Siemens Switzerland Ltd http://www.siemens.com/buildingtechnologies-productcatalog 2015
Building Technologies Division
4
Room automation
Overview and selection tools
Configurable Room Automation Station with BACnet
Example of product selection
1. Check application requirements
Requirements
• Fan coil
• 4-pipe system
• 3-speed fan
• 2 valves with electrothermal actuators (2-point control signal )
• Voltage AC 230 V
• Presence detector
• Room unit with built-in temperature sensor
Frost
protection
(FrPrtMon)
Outside air
damper
(DmpOa)
Extract air
temperature
(TEx)
Mixed air
temperature
(TMx)
Fan speed
(FanSpd)
Cooling coil
(Ccl)
Heating/
cooling coil
(HCcl)
Heating coil
(Hcl)
Supply air
temperature
(TSu)
DI
AI
Relais 3
Triac 1 1
0..10 V
Relais + 0..10 V
2. Find matching products in overview tables
Products matching application requirements above:
Product Number Description Qty
DXR2.E10 Compact room automation stations, BACnet/IP, 230 V 1
QMX3.P34 Room operator unit KNX with temperature sensor, segmented backlit display, touchkeys 1
UP 258D11 Passive infrared presence detector 1
STP73 Electrothermal actuator, AC/DC 24 V, NO, 2P, 1 m 2
VMP47.10-1.6 3-port seat valve with bypass, external thread, PN16, DN10, kvs 1.6 2
Note:
Product overview tables provide quick overview and show main features, nevertheless, we recommend checking technical parameters of
each product.
3. Check total data points and bus load
Used DXR2.. on-board data points: 5
KNX PL-link data points: 5
Total used data points: 10 < 30
Total KNX PL-link bus load: 17.5 mA < 50 mA
Correct, total values do not exceed maximum configuration.