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Siemens

Desigo TRA Engineering, mounting and installation

CM111043en_09

Building Technologies

KNX PL-Link room bus

2016-02-22

12.3 Cables

The bus lines (= twisted pair) are connected via PL+ (red) and PL– (black).

Choose the bus cable as per country-specific offerings. Comply with values
indicated in this document under "Technical data KNX PL-Link".
AC24V for field supply can be provided in the same (2 x 2 stands) or in a separate
cable.
Recommended bus cable are available on the KNX homepage under Downloads /
Support – 06 KNX Certification – 02 KNX Certified Products – Cable:

http://www.knx.org/downloads-support/downloads/

– 1 x 2 x 0.8 mm (e.g. Belden YE00819 or YE00905 - non-halogen).
– 2 x 2 x 0.8 mm (e.g. Belden YE00820 or YE00906 - non-halogen).

In TRA plants, bus cables

without screen

are permitted. The screens available for

bus cables do not need to be connected.
If interference is expected on the KNX bus, use a cable

with screen

. Connect the

screen as per standard installation rules.

The indications for distances and line lengths in a network are designed for bus
cables specified by KNX.

Comply with the following distances for a KNX network with the internal power
supply from the room automation station:

DXR2

PXC3

Distance between device and

internal supply

max. 80 m / 260 ft Max. 350 m / 1150 ft

Distance between devices

max. 80 m / 260 ft Max. 350 m / 1150 ft

Total length of all lines on one line max. 80 m / 260 ft Max. 350 m / 1150 ft

Comply with the following distances for a KNX network with external bus power
supply (PSU) (see section 12.1.2):

Distance PSU to PXC3 with switched off internal supply

Min.

0 m

Distance device to next PSU

Max. 350 m / 1150 ft

Distance between two PSU operated in parallel

Min. 200 m / 650 ft

Min. 0 m for the new Siemens power supply modules recommended
in section 12.1.2

.

Distance between devices

Max. 700 m / 2300 ft

Total length of all lines on one line

Max.1000 m / 3280 ft

Important: The bus conductors must NOT be inverted.

(KNX ter and –).

+

-

+

-

AC 24 V

T

K

N

X

K

N

X

Bus lines

Bus cable selection

Recommended cable
types

Bus cable screening

Bus cable: KNX
specified.

Network with internal
power supply from the
room automation
station

Network with external
power supply

Polarity

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Summary of Contents for Desigo TRA

Page 1: ...s Desigo TRA Engineering mounting and installation Manual CM111043en_09 2016 02 22 Building Technologies ...

Page 2: ...nting position 18 5 3 2 Space requirements 18 5 4 EMC compliant installation box panel 20 5 5 EMC compliant wiring 21 6 Wiring of power lines 23 6 1 Supplemental notes on safety 23 6 2 AC 230 V power lines 24 6 2 1 DXR2 RXM 24 6 2 2 AC 230 V power line cables 25 6 3 AC 24 V power lines 26 6 3 1 PXC3 power and island bus lines 26 6 3 2 DXR2 28 6 3 3 AC 24 V Transformer sizing 29 6 3 4 AC 24 V power...

Page 3: ... Cables 49 9 4 Power over Ethernet PoE 49 10 MS TP networks 51 10 1 Network requirements 51 10 2 Technical data BACnet MS TP 54 11 Island bus 56 12 KNX PL Link room bus 57 12 1 Bus power supply 57 12 1 1 Internal KNX PL Link power supply 57 12 1 2 External bus supply 58 12 2 Bus topologies 59 12 3 Cables 60 12 4 Commissioning notes 61 12 5 Technical data KNX PL Link 62 13 DALI network 63 13 1 Bus ...

Page 4: ...l bus supply types 1 2 12 1 2 _01 Mar 2012 First edition All 1 2 Reference documents Ref Document title Document number 1 Desigo Technical principles manual Section 21 CM110664 2 Data sheet PXC3 Room automation station CM1N9203 3 Data sheets DXR2 CM1N9204 7 6 Onboard I O functions of DXR2 Room automation stations CM110589 7 TX I O Product range overview CM2N8170 8 TX I O Engineering and installati...

Page 5: ...er listed in the table We forgo the labeling e g using the symbols and of trademarks for the purposes of legibility based on the reference in this section This document may be duplicated and distributed only with the express permission of Siemens and may be passed on only to authorized persons or companies with the required technical knowledge These documents were prepared with great care The cont...

Page 6: ... our products as intended Additional information on products and applications is available On the intranet for Siemens employees only at https workspace sbt siemens com content 00001123 default aspx At your next Siemens branch office www siemens com sbt or at your system suppliers From the support team in the headquarters fieldsupport zug ch sbt siemens com if no local POC is available Siemens ass...

Page 7: ...station product range and its design is provided for general understanding The mounting and installation guide is provided to internal engineering personnel at Siemens Building Technologies and system houses with information on the following topics Transformer sizing Wiring topology and sizing Installation variants for room automation station Regulations and notes The mounting and installation gui...

Page 8: ...nge Brief description Installation box or panel The following devices are installed in the installation box in the panel PXC3 or DXR room automation station TX I O modules connected to the room automation station via the island bus Other ways of installation Directly in the fan coil In the VAV box with terminal covers In a raised floor suspended ceiling with terminal covers in a parapet channel wi...

Page 9: ...a twisted pair cables The connection to the management station is done via IP Island bus island bus expansion A bus cable runs from the room automation station to the external I O modules Wiring of the field devices sensors switches buttons control values motors etc KNX PL Link A bus cable runs from the automation station to the KNX devices DALI A bus cable runs from the automation station to DALI...

Page 10: ...ectrical installations These take precedence over any notes in this document 3 1 System specific regulations The electrical safety for building automation and control systems by Siemens Building Technologies is essentially based on safely separating low voltage from mains voltage Application as per SELV or PELV pursuant to IEC 60364 4 41 Low voltage electrical installations depending on the ground...

Page 11: ...ication AC 24 V IEC Use safety insulating transformers as per IEC 61558 with double insulation designed for 100 duty to supply SELV or PELV circuits USA Class 2 circuits to UL 5085 3 Power taken from the transformer should be at least 50 of nominal load for efficiency reasons effectiveness Transformer nominal power should be at least 25 VA For smaller transformers the ratio of open circuit voltage...

Page 12: ...atched to the power components and mounted using short wiring 3 2 Device specific regulations Devices must have the required insulation of the power circuits from each other to be able to connect them directly without additional insulation Connections via interfaces increase the risk of distributing dangerous voltage through the building Ensure that the required insulation is available at all time...

Page 13: ... to individual security needs Such a security concept may result in additional site specific preventive action to ensure that the building comfort fire safety security management or physical security systems for your site are operated in a secure manner These measures may include but are not limited to separating networks physically protecting system components user awareness programs in depth sec...

Page 14: ...Description Details see section document T1 Transformer AC 24 V transformer sizing 0 AC 24 V Wiring of power lines and island bus 6 3 1 N1 PXC3 room automation station 8 U1 U3 TXS1 EF10Bus connection modules 8 U2 I O row supplied by the PXC3 8 U4 I O row supplied by a TXS1 EF10Bus connection module 8 U5 TXA1 IBE Island bus expansion module optional 8 Electrical properties of inputs and outputs 8 P...

Page 15: ...X DALI Element Description Details see section T1 Transformer AC 24 V transformer sizing 0 AC 230 V F2 Wiring of power lines 6 2 AC 24 V F1 Wiring of power lines 6 3 2 N1 DXR2 room automation station Electrical properties of inputs and outputs 8 Power supply for field devices 6 4 Wiring of field devices 7 Ethernet 9 MS TP 10 KNX PL Link 12 AC 230 V KNX PL Link M Ethernet MS TP KNX PL Link Installa...

Page 16: ...nted directly next to one another a distance of ca 2 cm is recommended however for facilitate access Reserve sufficient free space for subsequent extensions The room automation stations and TX I O modules are designed for installation on standard rails prerequisite to establishing the island bus connection using TX I O modules Permissible standard rails Top hat rails TH35 7 5 as per EN60715 35 x 7...

Page 17: ...erature of 5 50 C 23 122 F PXC3 E7x and DXR2 45 C 113 F for certain mounting positions see below Make sure that the installation box panel is sufficiently ventilated to ensure compliance with the ambient temperature for all devices For devices the permissible values as per the data in Technical data in the datasheet must be observed with regard to Humidity vibration Device IP class and device prot...

Page 18: ...oad KNX PL Link 105mA DALI 85mA and island bus 400mA You must ensure however that sufficient ventilation is available to maintain the permissible ambient temperature for the devices inside the cabinet installation box Outside the installation box panel temperature must be 10 K lower In case of vertical mounting on a mounting rail a stopper clamp is required to prevent the devices from sliding off ...

Page 19: ...19 84 Siemens Desigo TRA Engineering mounting and installation CM111043en_09 Building Technologies Installation box panel for TRA 2016 02 22 DXR2 PXC3 ...

Page 20: ...stallation box Grounding connections with doors through flat copper banks eventually including a connection to normal protective grounds Strongly disruptive devices devices that generate strong EMC interference must be separated as far as possible from TRA devices when setting up the installation box Special attention must be paid to the connections between the two device groups as follows Use sep...

Page 21: ...ly disruptive cables should be at a right angle to TRA cables Comply with the manufacturer s installation recommendations for the selection of shielded or unshielded cables In general unshielded twisted pair cables have sufficient EMC properties for building technical applications including data applications Unshielded round wires can also be used for the island bus wire CS CD Benefit Unscreened u...

Page 22: ...the screen and cable fastening rails Use only off the shelf screen terminal connections for trouble free screen shield connections Attaching cables in the cabinet 10762z019 I O module Support rail Run screen shield to the module but do not connect it to the module Cable fastening rails Screen shield connection Screen shield rail Cable screened shielded Cable unscreened unshielded The screen rail c...

Page 23: ... duct cross section with at least 30 in reserve Use wiring types and diameters as per the specifications below Cabling Use standard stranded cable and wiring The ends can be connected directly or strengthen with conductor sleeves or pin connectors Important If low voltage wiring runs alongside mains voltage it must have the same level of insulation as wiring for mains voltage Device connection ter...

Page 24: ...egulations Devices with AC 230 V supply can be wired in line topology However the next device has no AC 230 V power when a room automation station is removed The connection exists only on the board but not on the terminal block DXR2 RXM External fuse max T 10 A protection of the PCB tracks to the load circuits relays Max load of the lines 6 A Each device fused separately Each fuse max T 10 A A gro...

Page 25: ...all load and local regulations Fuse max T 10 A protection of the PCB tracks to the load circuits relays Supply cables must be secured with cable restraints The AC 230 V installation must guarantee that the voltage is at least 230 V 15 196 V at the location of the room automation station Each supply point room automation station is either connected separately star topology or looped via the neighbo...

Page 26: ... 230 V AC 24 V N T1 F1 A L 11043z10 F4 X1 F5 24V 24V 24V 24V U1 24V K F3 N1 X1 F4 N2 AC 230 V AC 24 V N T2 F2 A L 24V AC 24 V Island bus T T2 Safety transformer AC 230 V AC 24 V as per EN 61 558 K Terminal block for star distribution of AC 24 V and N1 PXC3 room automation station N2 PXC3 room automation station with separate power AC 24 V looped power from T1 admitted but not recommended U1 Power ...

Page 27: ... from the network For secure operation of the system it is recommended to supply each room automation station separately with AC 24 V Island bus If a TXS1 12F10 supply module is connected to output 24 V terminals 7 and 8 do not invert and The devices are not damaged but island bus communications will not work USB If USB communications do not work this is an indicator that the AC 24 V operating vol...

Page 28: ...pply must NOT be used to supply the triacs IEC installation International Electrotechnical Commission International Installation Standards SELV PELV Class III Transformer with unlimited power The over current protective device limits the energy in the secondary circuit DXR2 M PELV only must always be grounded at the transformer NEC Class 2 installation National Electric Code for North America A Us...

Page 29: ...LV circuits NEC Class 2 transformers The rated transformer output must be at least 25 VA In smaller transformers the ratio of no load voltage to full load voltage is unfavorable 20 For reasons of power efficiency the rated transformer output should not exceed 200 of the maximum load Max permissible input current AC 24 V through terminals 5 and 6 Total max 10 A Ext fusing compulsory max T 10 A melt...

Page 30: ...consumption no I O status LED for temperature inputs 5 The triacs have a switch capacity of AC 24 V 125 250 mA max 500 mA for 90 s This power is supplied by the 24 V conductor not by the DC 24 V power supply Base load without loading by field devices and triacs DXR2 M11 DXR2 M12P DXR2 E12P DXR2 M18 DXR2 E18 6 VA 250 mA 6 VA 250 mA 8 VA 250 mA 6 VA 250 mA 8 VA 333 mA KNX PL Link supply DC 29 V max ...

Page 31: ...e bus connection module is the basis for calculations The table below provides cable lengths and cable cross sections based on load Cable cross section Cable length Power 5 VA 10 VA 20 VA 50 VA 100 VA 200 VA 2 50 mm 2 AWG14 135 m 440 ft 70 m 220 ft 35 m 110 ft 13 m 44 ft 7 m 22 ft 3 m 11 ft 1 50 mm 2 AWG16 85 m 280 ft 42 m 140 ft 21 m 70 ft 8 m 30 ft 4 m 15 ft 2 m 7 ft 1 00 mm2 AWG18 55 m 180 ft 2...

Page 32: ...eak currents occur at switch on and during measurement operations 4 T 10 A fuse in the PXC3 in the power supply module in the bus connection module Use cable cross section suited for 10 A according to local regulations 5 TXM1 8U Bus connection module may feed any supply voltage Field devices may be powered using an external local transformer The external transformer must NOT be grounded earth loop...

Page 33: ...terference PXC3 RXM 300 m 1000 ft DXR2 80 m 260 ft Exceptions hum injection see page 35 Min 0 5 mm 2 AWG 24 All system neutral terminals of a device are interconnected TX I O The connection is not in the terminal base but in the plug in module When this unit is unplugged there is no connection The system neutral of a digital input can be connected to any signal neutral terminal of the device It is...

Page 34: ...tor However the measuring current 1 2 mA is so small that up to 16 inputs TXM1 16D can be connected with the minimum cross section 0 28 mm2 0 6 mm diameter and with the maximum cable length of 300 m 1000 ft 7 1 2 Passive resistance sensors and resistance transmitters The maximum permissible cable length for passive resistance sensors and transmitters depends on the permissible measuring error due ...

Page 35: ...ield AI NTC10K 0 05 30 m 100 ft 80 m 260 ft with shield AI NTC3K 0 05 30 m 100 ft 80 m 260 ft with shield AI R100K 0 05 30 m 100 ft 80 m 260 ft with shield All other signal types 0 13 80 m 260 ft 0 05 80 m 260 ft Connect the shield to system neutral on one end The measured value functions are already adjusted with a line resistance of 1 ohm and the graphs below take account of this Exception NTC3K...

Page 36: ...o line resistance The sensors are highly non linear But thanks to the high sensor resistance the errors are very small Error compared to T1 NTC 100K NTC10K NTC3K 20 C x 0 01 x 0 1 x 0 3 100 C x 0 1 x 1 equal Resistance transmitters potentiometers Measured value error due to line resistance 2 0 1 100 200 300 1 mm L m 4 6 8 F Ohm 10762d036 1 5 mm 2 5 mm 0 6 mm Ø Formula F 1 57 2 A L A Cable cross se...

Page 37: ... m 260 ft with a wire diameter of 0 6 mm The local transformer MUST NOT be earthed earth loop DC 0 10 V actuators with DC 0 10 V feedback System neutral of output and feedback may be in the same conductor due to the small current However output and feedback must be on the same device In case of active sensors with AC 24 V supply use cable cross section suited for 10 A according to local regulation...

Page 38: ...AWG14 140 m 460 ft 70 m 230 ft 30 m 90 ft 15 m 45 ft 8 m 25 ft 1 50 mm2 AWG16 90 m 290 ft 45 m 145 ft 20 m 60 ft 10 m 30 ft 5 m 15 ft 1 00 mm 2 AWG18 55 m 180 ft 30 m 90 ft 12 m 35 ft 6 m 20 ft 3 m 10 ft 0 75 mm 2 AWG20 35 m 110 ft 17 m 55 ft 7 m 25 ft 3 m 12 ft 2 m 6 ft Cable cross section Cable length Power 1 VA 2 VA 5 VA 10 VA 20 VA 2 50 mm2 AWG14 280 m 920 ft 140 m 460 ft 60 m 200 ft 30 m 90 f...

Page 39: ... ft EM interference Use cable cross section suited for 10 A according to local regulations T 10 A fuse in the power supply module room automation station Cable length 300 m 1000 ft EM interference Calculation is based on a voltage drop of 0 48 V 2 of 24 V the triac and the PTC protection resistor have a voltage drop of 6 Cable cross section Cable length Power 1 VA 2 VA 5 VA 10 VA 20 VA 2 50 mm2 AW...

Page 40: ... and the equipment to be switched may be up to 300 m 1000 ft long DXR2 80 m 260 ft The permissible lengths are calculated as follows Voltage drop of max 7 1 68 V on the AC 24 V operating voltage for the actuator Cable cross section Cable length for AC 24 V Power 2 VA 5 VA 10 VA 20 VA 50 VA 2 50 mm 2 AWG14 300 m 1000 ft 300 m 1000 ft 235 m 770 ft 120 m 390 ft 47 m 150 ft 1 50 mm2 AWG16 300 m 1000 f...

Page 41: ...emperature Temp AI Ni1000 AI Ni1000 AI Pt1K375 AI Pt1K385 AI T1 AI NTC100K AI NTC10K AI NTC3K TCR 5000 LG Ni 1000 DIN TCR 3750 USA TCR 3850 Europe PTC Beta 3891 Ratio 9 062 Beta 3890 Ratio 9 065 DXR2 only EN60751 C F Ohm Ohm Ohm Ohm kOhm kOhm kOhm 40 40 830 8 791 3 846 6 842 7 1 840 4 336 487 101 583 30 22 871 7 841 5 885 1 882 2 1 934 6 176 974 53 194 20 4 913 5 893 0 923 5 921 6 2 030 3 97 080 2...

Page 42: ... proportional to the application range of the sensor Active sensors are available for Relative humidity Pressure in liquid and gaseous media Differential pressure in liquid and gaseous media Air quality Air velocity 10762d037_01 0 U x 100 0 V 10 V Key U Sensor signal voltage x Measured value 0 100 application range When the process value is outside 1 5 11 5 V a fault message will be sent For a wor...

Page 43: ...0 C 52 5 155 0 C 10 mK 0 018 F 40 70 C 45 75 C 40 158 F 49 167 F 25 mK 0 045 F Temperature AI Ni1000 DIN 40 70 C 45 75 C 40 158 F 49 167 F 25 mK 0 045 F Temperature AI T1 PTC 50 130 C 52 5 155 0 C 10 mK 0 018 F 40 70 C 45 75 C 40 158 F 49 167 F 100 mK 0 18 F Temperature AI NTC 3K 40 70 C 45 75 C 40 158 F 49 167 F 25 mK 25 C 0 045 F 77 F Temperature AI NTC 10K 40 115 C 1 52 5 155 C 10 mK 0 018 F 25...

Page 44: ... 5 VA PWM 0 100 Spring return 8 x 3 VA 3 4 x 6 VA 4 VA 1 6 VA 2 x 4 5 VA PWM 5 50 8 x 3 VA 3 4 x 6 VA 2 x 4 VA 1 2 x 6VA 2 2 x 4 5 VA Short time load per triac for starting power in cold condition 12 VA 2 max 90s 6 VA 2 max 300s 6 VA 2 12 VA 2 Field supply AC 24 V 240 VA 3 4 VA 1 6 VA Field supply DC 24 V xx12P xx18 2 4 W Sum for device 24 VA without field supply 4 VA 1 xx12P 72 VA xx18 88 VA 9 VA...

Page 45: ...multaneous loads must not exceed 4 VA loads on triacs Binary and multistate outputs loads on the field supply A higher field supply load may be covered by an external AC 24 V transformer For triacs this solution is not admissible 2 2 thermal actuators AO PWM thermal 5 50 may be driven at the same time with one triac each In this case the two triacs are activated round robin 3 2 motorized actuators...

Page 46: ...amples DC 0 10 V Example 4 DXR2x09 Example 5 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 Relais 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 ...

Page 47: ...lectrical features of inputs outputs 2016 02 22 8 4 Analog outputs DC 0 10 V Technical data Signal type Range under over range Resolution Output voltage TX I O AO 0 10V 0 10 V 0 05 10 6 V 1 mV DXR2 AO 0 10V 0 10 V 0 10 5 V 2 mV AO 0 10 V norm 0 100 0 10 5 V 0 0 V 100 10 V 2 mV Output current max 1 mA ...

Page 48: ...bnet If access from the rest of the intranet is required Use a router with very selective bridging Prevent unauthorized access to any infrastructure e g cables LAN ports IT devices as routers building automation devices with appropriate measures e g lockable cabinets panels See documents 10 11 12 for detailed information 9 2 Network topologies You can use the following bus topologies Star topology...

Page 49: ...tween switch and Room automation station max 100 m 328 ft Length between Room automation stations Max 100 m 328 ft Number of devices under a line topology max 20 Standard IT product at 100 MB or 1 GB Additional information Desigo Technical principles manual 1 Section 3 overview 16 network view and 18 system limits Ethernet TCP IP as well as BACnet on Ethernet IP principles 6 Practitioner s guide I...

Page 50: ...tly industrial types feature an uplink i e multiple switches can be switched in series A single consumer can be supplied via PoE injector a midspan power source contrary to direct sourcing endspan via PoE switch Standard Ethernet cable min category 5 Screened or unscreened STP UTP STP Shielded Twisted Pair or UTP Unshielded Twisted Pair Distance between switch and room automation station max 100 m...

Page 51: ...ct to the following restrictions Switches pushbuttons and actuators for Lighting and blinds must operate on KNX PL Link and they must be connected to the same DXR2 M No combination with PXC3 via MS TP to IP router As a consequence no combination with DALI lighting control via a PXC3 Room segment relations only allowed in the same MS TP network Grouping of several room segments is only allowed for ...

Page 52: ... masters the max address range is 0 127 Siemens does not assume any responsibility for correct operation of third party devices in conjunction with Desigo TRA Test such devices before using them in a project The maximum of 32 loads must not be exceeded when using third party devices Check the manufacturer s literature for network loading information For more than 32 loads use a repeater Max 2 repe...

Page 53: ...ermistor TRF250 120 at ONE end The next device has no power AC 230 V when a room automation station is removed The connection exists only on the board but not on the terminal block The BACnet MS TP terminal block is not affected when a room automation station has no power AC 230 V or AC 24 V For more detailed information see documents 10 13 and 14 as well as Knowledge base article 2556 Note Availa...

Page 54: ...F m 24 pF ft Twists Min 13 m 4 ft Reference wire Gauge Min 0 2 mm 2 24 AWG stranded or solid Twists with pair Min 13 m 4 ft Shield 100 overall foil with drain wire 3 Voltage rating 300 V 4 Temperature rating 75 C 167 F or higher Standards EU CE Mark 2011 65 EU ROHS II 2002 96 EC WEE 2003 11 EC BFR MII Order 39 China RoHS 1 Stranded conductors are easier to connect in narrow places Less risk of bre...

Page 55: ...oil 80 2 2 Blue White White Blue Orange White White Orange 1 Foil Braid is recommended for harsh environment mechanical and electromagnetic interference e g variable speed drives 2 2 pair cable to be used with care because of different color scheme The two conductors of the second pair must be wired in parallel to the Reference terminal to prevent a floating conductor 3 Recommended color scheme fo...

Page 56: ...mation station TX I O modules on the same standard rail as the PXC3 TX I O modules on a different standard rail connected via an additional bus connection modules X1 X2 TX I O modules on a different standard rail connected via an additional power supply module U2 TX I O modules in an offset installation box connected via island bus extension modules U4 U5 Island bus Island bus Extension AC 24 V N1...

Page 57: ...cally based on the KNX bus Konnex In KNX networks area line couplers and IP routers are not allowed Interconnection of room automation stations via KNX PL Link is not admissible the connection is done exclusively via Ethernet switches Section 9 or MS TP section 10 The polarity of the KNX PL Link bus conductors must be correct KNX terminals and In most countries specific KNX know how is transmitted...

Page 58: ...l with other PSUs Refer to the technical specifications Depending on the type a minimum cable distance is required between two PSU see section 12 3 Siemens PSU may be placed without a distance We recommend the following Siemens power supply units for KNX networks see links below 5WG1 125 4AB23 short designation RL125 23 80mA with integrated throttle Parallel operation with other PSUs is allowed 5W...

Page 59: ...requiring less power are used Permissible bus topologies are Tree line and star topologies These topologies can be mixed as needed However ring topologies are not allowed The tree topology is advantageous if a large network must be created Tree topology with stub lines Line topology with loops PL Link PL Link N1 N7 Devices Device with screw terminals T branch with bus terminals Device with spring ...

Page 60: ...or distances and line lengths in a network are designed for bus cables specified by KNX Comply with the following distances for a KNX network with the internal power supply from the room automation station DXR2 PXC3 Distance between device and internal supply max 80 m 260 ft Max 350 m 1150 ft Distance between devices max 80 m 260 ft Max 350 m 1150 ft Total length of all lines on one line max 80 m ...

Page 61: ...provides permissible loads based on cable lengths and cable cross sections Cable length for AC 24 V AWG NO Cable cross section diameter 10 m 33 ft 20 m 65 ft 50 m 165 ft 100 m 330 ft 200 m 650 ft AWG20 0 5 mm2 0 8mm 48 VA 30 VA 12 VA 6 VA 3 VA AWG18 0 8 mm2 1 0mm 48 VA 48 VA 20 VA 10 VA 5 VA AWG16 1 3 mm 2 1 3 mm 48 VA 48 VA 32 VA 16 VA 8 VA AWG14 2 1 mm 2 1 6mm 48 VA 48 VA 48 VA 24 VA 12 VA 12 4 ...

Page 62: ... or spiral quad Wire diameter Min 0 8 mm AWG20 Max 1 0 mm AWG18 Line resistance 20 75 km Specific capacity 10 100 nF km at 10 kHz Specific inductivity 450 850 µH km at 10 kHz Screens Not required PXC3 devices do not have a connection for bus cable screens Internal bus power from room automation station PXC3 DC 30 V 160 mA for max 16 KNX devices with 10 mA each DXR2 DC 30 V 50 mA for max 5 KNX devi...

Page 63: ...at the factory Parallel switching with an external power supply is NOT permitted An external power supply cannot be connected if the internal power supply is switched off Power consumption of all operational devices on the DALI circuit may not exceed 128 mA 64 x 2 mA Bus power and the DALI bus must be galvanically isolated from device electronics for devices with bus power 13 2 Bus topologies Up t...

Page 64: ...YM 2 x 1 5 mm 2 and 3 x 1 5 mm 2 NYM 2 x 1 5 mm 2 and 5 x 1 5 mm 2 A 1 5 mm2 cable corresponds to AWG15 16 The overall length is 300 m 1000 ft for a wiring cross section of at least 1 5 mm2 The permissible voltage drop off over the DALI line and the terminals is a maximum of 2 V The voltage drop off over the DALI line is typically 90 of 2V 1 8V and via the terminals 10 of 2V 0 2V Must comply with ...

Page 65: ...erence between the two bus lines and not as a voltage difference to the ground potential The sign preceding the voltage between DA and DA determines signal values 0 and 1 DALI bus cable Cable type 2 wire stranded one wire pair or 5 wire stranded or 7 wire stranded Wiring cross section Min 1 5 mm 2 AWG16 Distance sum of all bus sections Max 300 m 1000 ft Screens Not required Note PXC3 devices do no...

Page 66: ...emperature sensors or Piezo elements switches buttons At just 50 µWs a standard EnOcean RF modules can transmit a signal over a distance of 300 m 1000 ft in a free field The secret is the signal duration is just one one thousandth of a second and triggers executes and concludes the entire process Figure EnOcean technology uses Summary of EnOcean RF standards http www enocean alliance org en enocea...

Page 67: ...tly changing decor System extensions Switches sensors and actuators in building technology Wireless range in building is ca 30 m For operation with a control unit the connection to the gateway must first be set up See data sheet N1661 Gateway EnOcean LonWorks or N1662 Gateway EnOcean KNX Typical application example with additional third party components light Switch Temperature monitoring Valve Mo...

Page 68: ...urers offering compatible devices www enocean alliance org 14 2 Lighting conditions at mounting location This section refers to room units equipped with solar cells The data provided below is based on QAX9x 4 room units For guaranteed operation without battery at least 200 Lux illuminance must be present for at least 3 to 4 hours daily Avoid direct exposure to the sun as this results in fault temp...

Page 69: ...olving fluorescent lamps if the light source cannot be clearly defined Define minimum brightness and duration of illuminance required to ensure operation Check lighting conditions on the planned mounting location for the module assuming the least favorable conditions e g in winter The energy cell drains too much if the average illuminance drops below the defined indicated values and transmission c...

Page 70: ...on where the room unit is not shaded by users e g by moving around furniture Fig Examples for brightness on various locations in a typical office desk EA 500 lx Whether illuminance on the wall is actually 200 lx depends in large measure on local conditions We recommend conducting reference measurements using a luxmeter A device with battery backup can be used is illuminance is insufficient see Sec...

Page 71: ...ed sooner if the device is operated in total darkness and radio telegrams are transmitted frequently Battery supported operation is neither necessary nor recommended if there is sufficient light 14 4 RF link properties In Europe room devices use frequency 868 3 MHz and 315 Mhz reserved for this purpose This frequency may be used for various applications ISM with some limitations If radio signals o...

Page 72: ...mination 0 10 Avoid under all circumstances to metallically screen a room device Building materials as well as wall angles in particular influence the radio signal range with the radio link The greater the angle at which electromagnetic waves hit a wall the greater signal attenuation As a result avoid flat angles and wall niches 1660Z07en Receiver Transmitter Receiver Low attenuation High attenuat...

Page 73: ...s with large walls The antenna setup and the distance from ceilings floors and walls plays an important role Internal antennas typically have better RF properties versus flush mount receivers People and objects in the room also reduce range The generally standard range of 30 m 100 ft in buildings should be viewed in a differential manner dues to the numerous influences Planning for reserves in the...

Page 74: ...ected Metal and concrete walls reflect RF waves RF waves penetrate to neighboring hallways or rooms through opening e g a wood door or glass partition The range can be significantly reduced based on the specific local conditions An additional repeater in the right place is an easy way to provide and alternative RF path An EnOcean RF signal can be amplified at most two times by a repeater Metal par...

Page 75: ... in the room Where possible the antenna should be at least 10 cm from corners or cement ceilings Tip Avoid RF transmission along wall surfaces e g in a long hallway as well The ideal mounting location of the receiver s antenna is a central location in the room Magnetic foot antenna e g Hirschmann MCA 1890 MH must attach to a large a metal surface as possible to provide a sufficient counter polarit...

Page 76: ... computer audio and video systems must be at least 50 cm The distance of the EnOcean receiver to other high frequency transmitters should be at least 50 cm 20 in The transmitter position is non critical Repeaters i e amplifiers can help overcome problems with reception quality The EnOcean repeater requires no configuring e g self learning Simply connect to the supply voltage to commission The Sect...

Page 77: ...measures devices that easily find the best mounting locations for transmitter and receiver Faulty connection from previously installed devices can also be reviewed The RF telegrams and disruptive RF signals are displayed in the relevant frequency range Additional information available at http www enocean alliance org de home Field strength measuring equipment ...

Page 78: ... are considered shielding Within fire protection areas light walls or glass partitions with solid RF properties are often used Avoid metal reinforcement or metalized glass The following diagrams illustrate how to implement a reliable RF plan in three steps Fire protection walls Elevator shafts stairwells and other supply areas STEP 1 Floor plan and compass STEP 2 Draw relevant RF shielding on the ...

Page 79: ...level of security against future changes to environmental changes as well light walls furniture personnel in the room etc One meter either way for the gateway position is not an issue due to reserves even later A very robust RF system can be achieved by implementing a redundant RF reception path This can be accomplished by programming neighboring RF gateways for parallel reception of the RF transm...

Page 80: ...m 10 20 in the EPM 100 does not receive any transmission telegrams Trigger transmitter telegram the corresponding LO HI LED is unlit on EPM HI for flush mounted receiver LO for receiver with external antenna Transmitter mounted beyond the receiver range or the transmitter was removed in the meantime Change the mounting location for the transmitter or receiver or use repeater Comply with notes in S...

Page 81: ...e transmitter or receiver antenna or use a repeater Comply with notes in Section 1 b Transmitter not installed where expected or incorrectly assigned transmitter receiver Properly assign transmitter c Transmitter mounting location changes on occasion e g not tightly attached Move the mounting location of the transmitter within the receiver range In close proximity to the receiver antenna distance ...

Page 82: ...output channels to one sender The LEARN button allows for a simple function and range test Make sure the room device was charged sufficiently prior to testing Depending on receiver type and configuration an LED indicates if the receiver finds the LEARN button was pressed on a learned room device No acknowledgement occurs if the telegram is not received completely Possible causes Distance too great...

Page 83: ...ies Disposal 2016 02 22 15 Disposal The devices are considered electronics devices for disposal in terms of European Directive 2012 19 EU WEEE and may not be disposed of as domestic waste Dispose of the devices via the proper channels Follow all local and currently applicable laws and regulations ...

Page 84: ...ies Disposal 2016 02 22 Published by Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel 41 41 724 24 24 www siemens com buildingtechnologies Siemens Switzerland Ltd 2012 Delivery and technical specifications subject to change ...

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