SIMATIC RF300 1 ___________________ Introduction 2 ___________________ Safety information SIMATIC Ident RFID systems SIMATIC RF300 System Manual 3 ___________________ System overview 4 ___________________ Planning the RF300 system 5 ___________________ Readers 6 ___________________ Antennas 7 ___________________ RF300 transponder 8 ___________________ ISO transponder 9 ___________________ System integration 10 ___________________ System diagnostics A ___________________ Appendix Note: This document is a
Legal information Warning notice system This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are graded according to the degree of danger.
Table of contents 1 Introduction ........................................................................................................................................... 13 1.1 Navigating in the system manual ............................................................................................13 1.2 Preface ....................................................................................................................................14 2 Safety information ...............................
Table of contents 5 4.4 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.6 4.4.7 Chemical resistance of the transponders .............................................................................. 90 Overview of the transponders and their housing materials ................................................... 90 Polyamide 12 ......................................................................................................................... 91 Polyphenylene sulfide (PPS) ...........................................
Table of contents 5.3.10 Dimension drawing ...............................................................................................................135 5.4 5.4.1 5.4.1.1 5.4.1.2 5.4.1.3 5.4.1.4 5.4.1.5 5.4.1.6 5.4.1.7 5.4.1.8 5.4.1.9 5.4.1.10 5.4.2 5.4.2.1 5.4.2.2 5.4.2.3 5.4.2.4 5.4.2.5 5.4.2.6 5.4.2.7 5.4.2.8 5.4.2.9 5.4.3 5.4.3.1 5.4.3.2 5.4.3.3 SIMATIC RF340R/RF350R ..................................................................................................136 SIMATIC RF340R ............
Table of contents 6 5.6.1 5.6.2 5.6.3 5.6.4 5.6.5 5.6.6 5.6.7 5.6.8 5.6.9 5.6.10 5.6.11 5.6.12 5.6.13 Features ............................................................................................................................... 166 RF380R ordering data ......................................................................................................... 166 Pin assignment of RF380R RS-232/RS-422 interface......................................................... 166 LED operating display ...
Table of contents 7 RF300 transponder ............................................................................................................................. 207 7.1 Memory configuration of the RF300 transponders ...............................................................208 7.2 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 SIMATIC RF320T .................................................................................................................211 Features ..............................................
Table of contents 7.8.4.2 7.8.5 7.8.5.1 7.8.5.2 7.8.6 7.8.7 7.8.8 8 Temperature response in cyclic operation ........................................................................... 243 Use of the transponder in the Ex protection area ................................................................ 246 Use of the transponder in hazardous areas for gases ......................................................... 246 Installation and operating conditions for the hazardous area ............................
Table of contents 8.8 8.8.1 8.8.2 8.8.3 8.8.4 8.8.5 8.8.6 MDS D160 ............................................................................................................................283 Characteristics ......................................................................................................................283 Information for RF300 compatibility ......................................................................................283 Ordering data .....................................
Table of contents 8.16 8.16.1 8.16.2 8.16.3 8.16.4 8.16.5 MDS D422............................................................................................................................ 321 Characteristics ..................................................................................................................... 321 Ordering data ....................................................................................................................... 321 Mounting in metal .....................
Table of contents 9 8.24 8.24.1 8.24.2 8.24.3 8.24.4 8.24.5 MDS D522 ............................................................................................................................355 Characteristics ......................................................................................................................355 Ordering data ........................................................................................................................355 Mounting in metal...................
Table of contents 10 A 9.4 RF120C ................................................................................................................................ 391 9.5 RF160C ................................................................................................................................ 391 9.6 RF170C ................................................................................................................................ 392 9.7 RF180C ....................................
1 Introduction 1.1 Navigating in the system manual Structure of the content Content Contents Detailed organization of the documentation, including the index of pages and chapters Introduction Purpose, structure and description of the important topics. Safety Information Refers to all the valid technical safety aspects which have to be adhered to while installing, commissioning and operating from the product/system view and with reference to statutory regulations.
Introduction 1.2 Preface 1.2 Preface Purpose of this document This system manual contains all the information needed to plan and configure the system. It is intended both for programming and testing/debugging personnel who commission the system themselves and connect it with other units (automation systems, further programming devices), as well as for service and maintenance personnel who install expansions or carry out fault/error analyses.
Introduction 1.
Introduction 1.
Safety information 2 SIMATIC RFID products comply with the salient safety specifications acc. to IEC, VDE, EN, UL and CSA. If you have questions about the permissibility of the installation in the planned environment, please contact your service representative. WARNING Opening the device Do not open the device when when the power supply is on. Unauthorized opening of and improper repairs to the device may result in substantial damage to equipment or risk of personal injury to the user.
Safety information Repairs WARNING Repairs only by authorized qualified personnel Repairs may only be carried out by authorized qualified personnel. Unauthorized opening of and improper repairs to the device may result in substantial damage to equipment or risk of personal injury to the user. System expansions Only install system expansions intended for this system.
Safety information Security information Siemens provides products and solutions with industrial security functions that support the secure operation of plants, solutions, machines, equipment and/or networks. They are important components in a holistic industrial security concept. With this in mind, Siemens’ products and solutions undergo continuous development. Siemens recommends strongly that you regularly check for product updates.
Safety information SIMATIC RF300 20 System Manual, 07/2016, C79000-G8976-C345-0x
3 System overview 3.1 RFID systems RFID systems from Siemens control and optimize material flow. They identify reliably, quickly and economically, are insensitive to contamination and store data directly on the product or workpiece carrier. Table 3- 1 Overview of SIMATIC RFID systems Frequency range HF UHF RFID system SIMATIC RF200 SIMATIC RF300 MOBY D SIMATIC RF600 Transmission frequency 13.56 MHz 13.56 MHz 13.56 MHz 865 ... 928 MHz 1) Range, max.
System overview 3.2 SIMATIC RF300 3.2 SIMATIC RF300 3.2.1 System overview of SIMATIC RF300 SIMATIC RF300 is an inductive identification system specially designed for use in industrial production for the control and optimization of material flow. Thanks to its compact dimensions, RF300 is the obvious choice where installation conditions are restricted, especially for assembly lines, handling systems and workpiece carrier systems.
System overview 3.
System overview 3.
System overview 3.
System overview 3.
System overview 3.
System overview 3.2 SIMATIC RF300 Note Note on operation of the transponders MDS D5xx and MDS E6xx Note that the transponders MDS D5xx and MDS E6xx can only be operated in conjunction with the readers of the second generation (article number "6GT2801-xBAxx").
System overview 3.
System overview 3.
System overview 3.2 SIMATIC RF300 3.2.3 Application areas of RF300 SIMATIC RF300 is primarily used for non-contact identification of containers, palettes and workpiece holders in a closed production circuit. The data carriers (transponders) remain in the production chain and are not supplied with the products. SIMATIC RF300, with its compact transponder and reader enclosure dimensions, is particularly suitable in confined spaces.
System overview 3.3 System configuration 3.3 System configuration 3.3.1 Overview The SIMATIC RF300 system is characterized by a high level of standardization of its components. This means that the system follows the TIA principle throughout: Totally Integrated Automation. It provides maximum transparency at all levels with its reduced interface overhead. This ensures optimum interaction between all system components.
System overview 3.3 System configuration The entire production order that is saved on the transponder can also be read manually via the WIN-LC terminal located at each workstation. This means that virtually no additional data management is required on the control computer. The production order data can also be read for servicing purposes via the mobile SIMATIC RF350M reader.
System overview 3.3 System configuration 3.3.3 Example of container and cardboard container handling: Use of ISO transponders Containers of varying sizes are conveyed to picking workstations in a delivery center. There, the individual goods are removed and packed in cartons according to the delivery note.
System overview 3.
System overview 3.
Planning the RF300 system 4.1 Fundamentals of application planning 4.1.
Planning the RF300 system 4.
Planning the RF300 system 4.1 Fundamentals of application planning Note Transmission window with RF380R and RF382R Note that the transmission window of the reader RF380R is not square (Lx ≠ Ly). To obtain as large a transmission window as possible, make sure that the transponder only crosses the reader in the x direction.
Planning the RF300 system 4.1 Fundamentals of application planning The transponder can be used as soon as the intersection (SP) of the transponder enters the area of the transmission window. From the diagrams above, it can also be seen that operation is possible within the area between Sa and Sg. The active operating area reduces as the distance increases, and shrinks to a single point at distance Sg. Only static mode should thus be used in the area between Sa and Sg.
Planning the RF300 system 4.1 Fundamentals of application planning 4.1.4 Impact of secondary fields Secondary fields in the range from 0 mm to 30% of the limit distance (Sg) generally always exist. They should, however, only be used during configuration in exceptional cases, since the read/write distances are very limited. Exact details of the secondary field geometry cannot be given, since these values depend heavily on the operating distance and the application.
Planning the RF300 system 4.1 Fundamentals of application planning Secondary fields without shielding The following graphic shows typical primary and secondary fields, if no shielding measures are taken. ① ② Main field Secondary field Figure 4-4 Secondary field without shielding In this arrangement, the reader can also read tags via the secondary field. Shielding is required in order to prevent unwanted reading via the secondary field, as shown and described in the following.
Planning the RF300 system 4.1 Fundamentals of application planning Secondary fields with shielding The following graphic shows typical primary and secondary fields, with metal shielding this time. The metal shielding prevents the reader from detecting tags via the secondary field. ① ② Main field Secondary field Figure 4-5 4.1.
Planning the RF300 system 4.1 Fundamentals of application planning Meaning of the LED operating display in the "Setup" mode The operational statuses of the reader are displayed by two LEDs. The LEDs can adopt the colors white green, red, yellow or blue and the statuses off , on , flashing : Table 4- 1 Display elements LED Meaning The reader is turned off. The reader is turned on and is searching for transponders.
Planning the RF300 system 4.1 Fundamentals of application planning 4.1.7 Operation in static and dynamic mode Operation in static mode If working in static mode, the transponder can be operated up to the limit distance (Sg). The transponder must then be positioned exactly over the reader: Figure 4-7 Operation in static mode Operation in dynamic mode When working in dynamic mode, the transponder moves past the reader.
Planning the RF300 system 4.1 Fundamentals of application planning 4.1.8 Dwell time of the transponder The dwell time is the time in which the transponder remains within the transmission window of a reader. The reader can exchange data with the transponder during this time.
Planning the RF300 system 4.1 Fundamentals of application planning 4.1.9 Communication between communications module, reader and transponder Aids for calculating the data transmission times User-friendly calculation tools are available for the communications modules ASM 456, RF160C, RF170C and RF180C to calculate data transfer times. The calculation tools can be found on the DVD "Ident Systems Software & Documentation", article number 6GT20802AA20.
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Aids for calculating the field data You will also find a tool for calculating field data on the DVD "Ident Systems, Software & Documentation". Using this tool, among other things you can calculate the operating distance (Sa), limit distance (Sg) and transmission window (L). Figure 4-10 4.
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Note Possible reader-transponder combinations The tables of the following section show the possible reader-transponder combinations. 4.2.1 Field data of RF300 transponders The limit distances (Sg) and operating distances (Sa) along with the length of the transmission window for each reader-transponder combination are listed in the tables below.
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Table 4- 4 Field data RF350R reader / ANT 1 Length of the transmission window (L) Operating distance (Sa) Limit distance (Sg) RF320T 45 1...30 40 RF330T 40 1...25 30 RF340T 80 2...55 70 RF350T 80 2...65 85 RF360T 90 2...75 100 RF370T 85 5...65 85 RF380T 90 5...90 110 Length of the transmission window (L) Operating distance (Sa) Limit distance (Sg) RF320T ?? 1...16 20 RF330T ?? 1...
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Diameter of the transmission window (Ld) Operating distance (Sa) Limit distance (Sg) RF350T 25 0...35 40 RF360T ?? 2...25 35 All values are in mm Table 4- 8 Field data RF380R reader Length of the transmission window in the x direction (Lx) in the y direction (Ly) Operating distance (Sa) Limit distance (Sg) RF320T 100 40 2...45 60 RF330T 120 30 5...45 52 RF340T 120 50 2...80 105 RF350T 140 60 2.
Planning the RF300 system 4.2 Field data for transponders, readers and antennas 4.2.2 Field data of ISO transponders (MDS D) The limit distances (Sg) and operating distances (Sa) along with the length of the transmission window for each reader-transponder combination are listed in the tables below. Observe the following information for field data of ISO transponders: ● A maximum median deviation of ±2 mm is possible in static mode (without affecting the field data).
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Table 4- 10 Field data RF340R reader Length of the transmission window (L) Operating distance (Sa) Limit distance (Sg) MDS D100 90 5...110 140 MDS D124 60 2...60 75 MDS D126 80 2...85 110 MDS D139 90 5...80 110 MDS D160 50 2...35 60 MDS D165 130 5...100 125 MDS D200 125 5...80 110 MDS D261 95 5...60 70 MDS D324 50 2...55 70 MDS D339 100 5...75 85 MDS D400 140 2...
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Length of the transmission window (L) Operating distance (Sa) Limit distance (Sg) 50 2...60 80 MDS D424 MDS D425 40 2...25 35 MDS D426 110 0...85 110 MDS D428 40 2...35 50 MDS D460 40 2...35 50 MDS D524 50 2...60 80 MDS D525 ?? ?? ?? MDS D526 110 0...85 110 MDS D528 40 2...35 50 Diameter of the transmission window (Ld) Operating distance (Sa) Limit distance (Sg) MDS D124 ?? 0...
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Table 4- 14 Field data RF350R reader / ANT 18 Diameter of the transmission window (Ld) Operating distance (Sa) Limit distance (Sg) MDS D117 3 0...4 5 MDS D124 27 2...24 34 MDS D127 3 0...4 5 MDS D160 20 1...18 27 MDS D324 25 1...22 28 MDS D421 10 0...6 8 MDS D422 20 1...10 13 MDS D424 25 1...27 35 MDS D425 17 1...10 14 MDS D428 17 1...12 14 MDS D460 15 1...
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Table 4- 16 Field data RF380R reader Length of the transmission window in the x direction (Lx) in the y direction (Ly) Operating distance (Sa) Limit distance (Sg) MDS D100 140 100 5...170 210 MDS D124 80 80 1...120 140 MDS D126 180 140 2...145 190 MDS D139 140 90 5...160 200 MDS D160 80 40 2...64 80 MDS D165 200 140 5...170 200 MDS D200 200 160 5...150 195 MDS D261 190 120 5..
Planning the RF300 system 4.2 Field data for transponders, readers and antennas 4.2.3 Field data of ISO transponders (MDS E) The limit distances (Sg) and operating distances (Sa) along with the length of the transmission window for each reader-transponder combination are listed in the tables below. Observe the following information for field data of ISO transponders: ● A maximum median deviation of ±2 mm is possible in static mode (without affecting the field data).
Planning the RF300 system 4.2 Field data for transponders, readers and antennas Table 4- 20 Field data RF350R reader / ANT 1 Length of the transmission window (L) Operating distance (Sa) Limit distance (Sg) MDS E600 80 5...110 140 MDS E611 80 5...110 140 MDS E624 55 2...65 85 Diameter of the transmission window (Ld) Operating distance (Sa) Limit distance (Sg) 6 0...
Planning the RF300 system 4.2 Field data for transponders, readers and antennas 4.2.4 Minimum clearances Minimum distance from transponder to transponder The specified distances refer to a metal-free environment. For a metallic environment, the specified minimum distances must be multiplied by a factor of 1.5. The transponders designed specifically for installation in/on metal are an exception to this.
Planning the RF300 system 4.
Planning the RF300 system 4.2 Field data for transponders, readers and antennas The permissible minimum distance between two RF380Rs depends on the transmit power that is set. The specified minimum distance must be multiplied by the following factor, depending on the output: 1) Table 4- 27 Effect on the minimum distance of the transmit power with RF380R 'distance_limiting' byte Factor 02; 03 0.8 04; 05; 06 1.0 07; 08 1.
Planning the RF300 system 4.3 Installation guidelines 4.3 Installation guidelines 4.3.1 Overview The transponder and reader complete with their antennas are inductive devices. Any type of metal in the vicinity of these devices affects their functionality.
Planning the RF300 system 4.3 Installation guidelines Table 4- 30 Flush-mounting of transponders and readers Representation Description Problem: Flush-mounting of transponders and readers is possible in principle. However, the size of the transmission window is significantly reduced. The following measures can be used to counteract the reduction of the window: Remedy: Enlargement of the non-metallic spacer below the transponder and/or reader.
Planning the RF300 system 4.3 Installation guidelines Mounting of several readers on metal frames or racks Any reader mounted on metal couples part of the field to the metal frame. There is normally no interaction as long as the minimum distance D and metal-free areas a, b are maintained. However, interaction may take place if an iron frame is positioned unfavorably. Longer data transfer times or sporadic error messages at the communication module are the result.
Planning the RF300 system 4.3 Installation guidelines 4.3.4 Impact on the transmission window by metal In general, the following points should be considered when mounting RFID components: ● Direct mounting on metal is allowed only in the case of specially approved transponders. ● Flush-mounting of the components in metal reduces the field data; a test is recommended in critical applications.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.3 Installation guidelines Transponder RF310R reader without metal on metal flush-mounted in metal (20 mm allround) 100 95 80 on metal; distance 15 mm 90 95 85 flush-mounted in metal; distance all round 20 mm 80 75 60 MDS E6241) without metal 1) 4.3.4.2 Mounting the transponder on or in metal is only possible with the appropriate spacer or if there is adequate clearance to the metal.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.3 Installation guidelines 4.3.4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.3 Installation guidelines Transponder ANT 30 without metal ANT 30 mounted in metal (20 mm all-round) ?? ?? on metal; distance 25 mm ?? ?? flush-mounted in metal; distance all round 50 mm ?? ?? without metal ?? ?? on metal, distance 0 mm ?? ?? MDS D5261) without metal MDS D528 1) Mounting the transponder on or in metal is only possible with the appropriate spacer or if there is adequate clearance to the metal.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.
Planning the RF300 system 4.3 Installation guidelines 4.3.4.5 RF382R Note RF382R not suitable for metallic surroundings The RF382R was not developed for reading transponders in a metallic environment.
Planning the RF300 system 4.4 Chemical resistance of the transponders 4.4 Chemical resistance of the transponders 4.4.1 Overview of the transponders and their housing materials The following sections describe the resistance to chemicals of the various transponders. Resistance to chemicals depends on the housing materials used to manufacture the transponders.
Planning the RF300 system 4.4 Chemical resistance of the transponders Housing material Transponder PA6 MDS D127 PA6.6 GF30 MDS D126 MDS D422 MDS D425 MDS D426 MDS D428 MDS D522 MDS D525 MDS D526 MDS D528 Note Chemical substances not listed The following sections describe the resistance of the various transponders to specific substances. If you require information about chemical substances that are not listed, contact Customer Support. 4.4.
Planning the RF300 system 4.4 Chemical resistance of the transponders Substance Calcium nitrate, w. Test conditions Concentration [%] Temperature [°C] c. s. 20 ℃ c. s. Chlorine Chrome baths, tech. Rating ○○○○ 60 ℃ ○○○ 20 ℃ - 20 ℃ - Iron salts, w. c. s. 60 ℃ ○○○○ Acetic acid, w. 50% 20 ℃ - Ethyl alcohol, w., undenaturated 95% 20 ℃ ○○○○ 95% 60 ℃ ○○○ 50% 60 ℃ ○○○○ 30% 20 ℃ ○○○ 10% 20 ℃ ○○○○ 10% Formaldehyde, w.
Planning the RF300 system 4.4 Chemical resistance of the transponders Substance Test conditions Rating Concentration [%] Temperature [°C] high 60 ℃ ○○○○ 60 ℃ ○○○○ Detergent Plasticizer Explanation of the rating 4.4.3 ○○○○ Resistant ○○○ Practically resistant ○○ Conditionally resistant ○ Less resistant - Not resistant w. Water solution c. s. Cold saturated Polyphenylene sulfide (PPS) The data memory has special chemical resistance to solutions up to a temperature of 200 °C.
Planning the RF300 system 4.4 Chemical resistance of the transponders Substance Test conditions Concentration [%] Temperature [°C] 30% 90 ℃ Sodium hydroxide solution Rating ○○○○ Nitric acid 10% 23 ℃ ○○○○ Hydrochloric acid 10% 80 ℃ - Sulfuric acid 10% 23 ℃ ○○○○ 10% 80 ℃ ○○ 30% 23 ℃ ○○○○ Tested fuels 80 ℃ ○○○○ FAM testing fluid acc.
Planning the RF300 system 4.4 Chemical resistance of the transponders Substance Test conditions Concentration [%] Rating Temperature [°C] Perchloroethylene - Acetone - Alcohols ○○ Hot water (hydrolysis resistance) - Explanation of the rating 4.4.
Planning the RF300 system 4.4 Chemical resistance of the transponders 4.4.
Planning the RF300 system 4.4 Chemical resistance of the transponders Substance Test conditions Concentration [%] Chromosulfuric acid Rating Temperature [°C] 20 ℃ - Citric acid 20 ℃ ○○○○ Cyanamide 20 ℃ ○○○○ Cyanides (K–, Na– among others) 60 ℃ ○○○○ Dextrin, w.
Planning the RF300 system 4.4 Chemical resistance of the transponders Substance Test conditions Concentration [%] Temperature [°C] 50% 60 ℃ Phosphoric acid 85% Propanol Rating ○○○○ 20 ℃ ○○○○ 20 ℃ ○○○○ Nitric acid 25% 20 ℃ - Hydrochloric acid 10% 20 ℃ - 60 ℃ - Brine Sulfur dioxide 100% 20 ℃ ○○ Carbon disulfide 100% 20 ℃ - Sulfuric acid 40% 20 ℃ - Sulfurous acid 20 ℃ ○○ Soap solution 60 ℃ ○○○○ Sulphates (ammonium..., Na– among others) 60 ℃ ○○○○ Sulfites (ammonium...
Planning the RF300 system 4.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) The description is intended for "qualified personnel": ● Project engineers and planners who plan system configurations with RFID modules and have to observe the necessary guidelines. ● Fitters and service engineers who install the connecting cables in accordance with this description or who rectify defects in this area in the event of interference.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) EMC measures usually consist of a complete package of measures, all of which need to be implemented in order to ensure that the plant is immune to interference. Note The plant manufacturer is responsible for the observance of the EMC directives; the plant operator is responsible for radio interference suppression in the overall plant.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) ● Route the signal cables as close as possible to chassis surfaces. ● Twist the feed and return conductors of separately installed cables. ● Routing HF cables: avoid parallel routing of HF cables. ● Do not route cables through the antenna field. Shielding for the cables ● Shield the data cables and connect the shield at both ends. ● Shield the analog cables and connect the shield at one end, e.g. on the drive unit.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) The EMC measures are applied to all three components, in order to prevent malfunctions due to interference. When setting up a plant, the manufacturer must take all possible measures in order to prevent the occurrence of interference sources: ● Only devices fulfilling limit class A of VDE 0871 may be used in a plant. ● Interference suppression measures must be introduced on all interference-emitting devices.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) What interference can affect RFID? Interference source Cause Remedy Switched-mode power supply Interference emitted from the current infeed Replace the power supply Interference injected through the cables connected in series Cable is inadequately shielded Better cable shielding The reader is not connected to ground. Ground the reader caused by another reader • Position the antennas further apart.
Planning the RF300 system 4.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) 4.5.5 Cabinet configuration The influence of the user in the configuration of an electromagnetically compatible plant encompasses cabinet configuration, cable installation, ground connections and correct shielding of cables. Note For information about electromagnetically compatible cabinet configuration, please consult the installation guidelines for SIMATIC PLCs.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) As a rule: ● The effect of the interference decreases as the distance between the interference source and interference sink increases. ● The interference can be further decreased by installing grounded shielding plates. ● The load connections and power cables should be installed separately from the signal cables with a minimum clearance of 10 cm.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) Filtering of the supply voltage External interference from the mains can be prevented by installing line filters. Correct installation is extremely important, in addition to appropriate dimensioning. It is essential that the line filter is mounted directly at the cabinet inlet. As a result, interference is filtered promptly at the inlet, and is not conducted through the cabinet.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) 4.5.6 Prevention of interference sources A high level of immunity to interference can be achieved by avoiding interference sources. All switched inductances are frequent sources of interference in plants. Suppression of inductance Relays, contactors, etc. generate interference voltages and must therefore be suppressed using one of the circuits below.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) 4.5.7 Equipotential bonding Potential differences between different parts of a plant can arise due to the different design of the plant components and different voltage levels. If the plant components are connected across signal cables, transient currents flow across the signal cables. These transient currents can corrupt the signals. Proper equipotential bonding is thus essential.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) 4.5.8 Cable shielding Signal cables must be shielded in order to prevent coupling of interference. The best shielding is achieved by installing the cables in steel tubes. However, this is only necessary if the signal cable is routed through an environment prone to particular interference. It is usually adequate to use cables with braided shields. In either case, however, correct connection is vital for effective shielding.
Planning the RF300 system 4.5 Guidelines for electromagnetic compatibility (EMC) Figure 4-19 Connection of shielding bus The shielding bus must be connected to the PE busbar. If shielded cables have to be interrupted, the shield must be continued via the corresponding connector housing. Only suitable connectors may be used for this purpose.