The worldwide standard for home and building control Bus systems siemens.
Optimum control requires accurate measurements This manual was written by practitioners for practitioners and has become a popular and indispensable reference book over the last few years. Legal regulations increasingly appeal for the economic use of energy. At the same time, the indoor climate must meet stringent requirements. Both requirements can be fully met only if all necessary measured data are available and the sensors remain absolutely reliable year after year.
Future-proof building control Everything you need for a good working climate Working concentrated while saving energy – products from Siemens improve the atmosphere in rooms and facilitate more economical operations. The result: perfectly temperature-controlled and airconditioned rooms with good lighting and reduced energy consumption.
Highlights • Saves up to 30 percent energy with individual room control and energy saving functions • Protects investments on the basis of reliable products and the ability to add KNX devices • Easy commissioning and adaptation to changes in use due to tested applications • Extremely environmentally friendly due to energyindependent variants with EnOcean technology Contact and support GAMMA instabus: siemens.com/gamma Technical documentation: siemens.com/gamma-td HVAC Integrated Tool (HIT): siemens.
Bus systems • Communication standards 8 • KNX – description, highlights and system data 10 • DALI – description, highlights and system data 14 • BACnet – description and highlights 18 • KNX PL-Link – description and highlights 20 • Further communication standards – Modbus, M-Bus, OPC, Web, ZigBee 22 7
Communication standards In building control, open communication is important. It allows easy and secure integration of devices, systems and functions. Support for multiple open standards ensures communication and facilitates efficient engineering. It also makes system maintenance and interoperability easier, thereby providing greater investment protection. Siemens supports different communication protocols in building automation. As a result, a wide range of communicating devices can be used.
Bus systems Highlights • Easy and secure integration • Reliable data exchange between various communication systems • Comfortable and universal operation • Long-term investment protection
KNX The KNX technology allows flexible implementation and expansion of both simple as well as cross-discipline solutions in room and building automation according to individual requirements. KNX products for controlling lighting, sun protection and room climate as well as for energy management and security functions are characterized by easy installation and commissioning. The vendor-independent ETS Tool is used for commissioning.
Highlights • Harmonized products and systems for cross-discipline building and room automation • Easy integration into higher-level building management systems on the basis of the open communication standard • Uniform commissioning, due to the use of vendor- and product-independent commissioning software (ETS) • A well-known system that is widely used in building control with guaranteed interoperability thanks to certification processes • Corresponds to the previous European Installation Bus (EIB) and is b
System data Bus connection Cable type YCYM 2 × 2 × 0.8 mm2 one wire pair (red, black) for signal transmission and power supply, one wire pair (yellow, white) for additional applications (SELV or voice) Cable lengths Total length of one line max. 1,000 m (wire diameter: 0.8 mm) (including all branches) Length between two bus devices max. 700 m Length between a bus device and the power supply max.
Transmission Transmission technology decentralized, event-controlled, serial, symmetrical Baud rate 9,600 bit/s Device properties Protection class acc.
DALI DALI (Digital Addressable Lighting Interface) is a standardized interface for lighting control. Electronic ballasts, transformers and sensors in a lighting system communicate with the building automation system via DALI. DALI is an internationally applied standard compliant with IEC 62386 requirements. For further information, please visit: dali-ag.
System data Bus connection Cable type NYM 5 x 1.5 mm2 for mains power input and DALI, excluding the polarity. Ballast and control device can be operated at different line voltage phases. Cable lengths The length of the Maximum voltage drop on the cable is control line is limited 2 V at 250 mA. The maximum total cable only by the voltage drop length between the control unit and the connected ballasts is 300 m. Cable cross-section A is calculated from the following formula: L: Cable length (m) I: Max.
Bus devices Possible addresses max. 64 Possible groups max. 16 Number of bus devices per line max. 64 ballasts and 64 sensors Number of possible scenes per ballast Up to 16 light values (scenes) per ballast can be stored, regardless of any group assignments that may be programmed. Topology Parallel, star-shaped wiring, excluding possible groups. Ring-shaped wiring is not permitted. Terminating resistors are not needed.
Transmission Transmission technology serial, asynchronous Baud rate 1,200 bit/s Device properties Protection class EN 60529 (DIN VDE 0470-1) and DIN EN 50102 Safety measures Basic insulation required according to IEC 60928 EMC requirements EN 50081/VDE 0839-81 and EN 50082/VDE 0839-82 Ballast standards Safety (EN 61347) Functionality (EN 60929) Line current harmonics (EN 61000-3-2) Radio interference suppression from 9 kHz to 300 MHz (EN 55015:2006 + A1:2007)/CDN measurement Immunity (EN 61547) Co
BACnet The communication protocol BACnet was specially developed to meet the needs of buildings, both inside and out. It is well suited for the automation level as well as the management level. It is primarily for HVAC systems as well as fire control panels, intrusion detection and access control systems. BACnet is continuously expanded to accommodate additional building-specific systems such as escalators and elevators. Some 900 manufacturers use BACnet in their products.
Highlights • Maximum investment security through use of the open, international standard ISO 16484-5 • Manufacturer-independent • No license costs • Guaranteed reliability thanks to independent testing and certification bodies for BACnet devices • Wide range of transmission media such as BACnet IP or BACnet MS/TP can be combined as needed, and support extremely flexible topologies • Integration of widely diverse disciplines and manufacturers without need for specialized hardware 19 Bus systems Product po
KNX PL-Link KNX PL-Link (PeripheraL-Link) is a Desigo-specific bus system optimized to enable communication between distributed, i.e. decentrally installed field devices and the modular PXC3 room automation stations. Its typical areas of application include controlling all disciplines within a room, such as heating, ventilation, air conditioning, lighting and sun protection.
Highlights • Plug-and-play bus system with automatic device recognition • Bus cable for up to 64 devices in linear or star topologies with a maximum line length of 1,000 m • Power supply for up to 64 devices directly via the bus cable • Fast, event-oriented communication for lighting and sun protection applications 21 Bus systems Devices from Siemens with KNX PL-Link function • Modular room automation stations Desigo PXC3 • QMX3 room operator units • VAV compact controllers GDB/GLB181 • Gamma products, e
Other communication standards Modbus Modbus is an open, widely used standard employed in many areas of application such as industry, buildings as well as the transport and energy sectors. The Modbus protocol is used to establish master-slave/client-server communication between intelligent devices. Via Modbus, a master, for example an automation station, and multiple slaves, such as refrigeration machines, can be connected.
protected two-wire cable from the connected slaves, i.e. measuring instruments, to a master. M-Bus meters are available for heat, water, electricity and gas. Please find more information at: m-bus.com 23 Bus systems OPC OPC is a standardized software interface that enables data exchange between various devices, control systems and applications of differing manufacturers.
Web (IT standard technology) This is the umbrella term for a number of standardized communication protocols in the IT world that can be used within a local facility as well as via the Internet. It includes protocols that enable users to communicate with their plants and products, such as graphic user interfaces operable with Web browsers, e-mail messages to maintenance personnel or loading firmware modifications.
Bus systems ZigBee ZigBee is a specification for wireless short-range radio networks that handle only low data volumes, used for example in sensor networks and lighting system engineering. The ZigBee Alliance is an international pool of various business enterprises. ZigBee is based on the IEEE 802.15.4 standard. Please find more infor mation at: zigbee.
Glossary Definitions and explanations of certain technical terms used in the previous chapters 27
AC Alternating current ASCII ASCII (American Standard Code for Infor mation Interchange) is a 7-bit character encoding standard that enables data exchange. ASHRAE ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) is a globally active American association for engineers focusing on technical building services. BTL The BTL brand was developed by the American BACnet International for BACnet Testing Laboratories (BTL).
Designates the good agreement of something with the codes and standards governing that particular context DALI DALI (Digital Addressable Lighting Interface) is a digital interface that is integrated into the ballasts of luminaires and permits flexible wiring and commissioning. In addition to switching and dimming functions, it also detects and transmits lamp failures. DC Direct current DIN DIN stands for Deutsches Institut für Normung e.V., the German Institute for Standardization.
EnOcean The EnOcean Alliance was formed by leading companies in the building automation industry with the goal of implementing innovative wireless solutions for sustainable building automation projects. ETS The ETS (Engineering Tool Software) is a vendor-independent commissioning software for all KNX devices. Group Communication between KNX devices address (KNX) is performed via group addresses. They contain a clear function or piece of information.
The ISO (International Organization for Standardization) is the international association of standardization organizations. KNX Association The KNX Association is an amalgamation of over 400 companies in 35 countries who have agreed on a standard technol ogy known as KNX for exchanging telegrams between sensors and actuators within building automation systems. The Engineering Tool Software (ETS) is a vendor-independent commissioning software for KNX devices.
LAN LAN is the abbreviation for Local Area Network. Data transfer on LANs is organized by IP (Internet Protocol) – the standard network protocol on the Internet. LON/ LonWorks A LON (Local Operating Network) is a decentralized network. LonWorks Network Services also provides services for installation, administration, analysis and license controlling of LON networks. Object Term denoting an example of a particular data type. Every object is characterized by state, behavior and identity.
PL PL (Power Line) is a connection via the AC 230 V power supply grid. PoE PoE (Power-over-Ethernet) refers to a method for supplying power to networkable devices over the 8-wire Ethernet cable. Protocol A system of rules that specify the format, content, meaning and order of messages transmitted between various entities of the same communications system RTU Remote terminal unit SELV Safety extra-low voltage TCP The TCP (Transmission Control Protocol) is part of the TCP/IP protocol family.
UDP Besides TCP, the UDP (User Datagram Protocol) is the most important transport protocol of the Internet protocol family. As a minimal, connectionless network protocol, it is also used in the BACnet/IP standard, and forms there the basis for efficient processing of the actual data traffic. VDE VDE is the Verband der Elektrotechnik Elektronik Informationstechnik e.V., the German Association for Electrical, Electronic & Information Technologies.
An interface based on Web technologies for exchanging data between computers on the Internet (machine-to-machine communication) WLAN Wireless Local Area Network, i.e.
Published by Siemens Switzerland Ltd 2018 Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel +41 41 724 24 24 Subject to changes and errors. The information given in this document only contains general descriptions and/or performance features which may not always specifically reflect those described, or which may undergo modification in the course of further development of the products.
