App J_European Union Directives (CE).qxd
Contents
1. The DL305 AC powered base power supplies require extra mains filtering to comply with the EMC Directive on conducted RF Schaffner emissions All PLC equipment has been Filter EN2010 tested with filters from Schaffner which reduce emissions levels if the filters are properly grounded earth ground A filter ToAC with a current rating suitable to supply all Input 3 gt Transient Circuitry PLC power supplies and AC input modules Suppressor should be selected We suggest the FN2080 for DL305 systems Fused Earth Terminals Termina NOTE Very few mains filters can reduce problem emissions to negligible levels In some cases filters may increase conducted emissions if not properly matched to the problem emissions Suppression and Fusing In order to comply with the fire risk requirements of the Low Voltage and Machinery Directive electrical standards EN 61010 1 and EN 60204 1 by limiting the power into unlimited mains circuits with power leads reversed it is necessary to fuse both AC and DC supply inputs You should also install a transient voltage suppressor across the power input connections of the PLC Choose a suppressor such as a metal oxide varistor with a rating of 275VAC working voltage for 230V nominal supplies 150VAC working voltage for 115V supplies and high energy capacity eg 140 joules Transi2. communications cables Metallic conduit for communications and I O wiring Mains filter Transient voltage suppressor ground Mains disconnect switch 1 0 common earthed Ferrite choke i Panelior on I O wiring Panel Ground Braid Single Point N Copper Lugs Ground Lock Nut PR Star Washers x Lock Nut Illustrations are not to scale Star Washers Electrostatic Discharge ESD We specify in all declarations of conformity that our products are installed inside an industrial enclosure using metallic conduit for external wire runs therefore we test the products in a typical enclosure However we would like to point out that although our products operate normally in the presence of ESD this is only the case when mounted within an enclosed industrial control cabinet When the cabinet is open during installation or maintenance the equipment and or programs may be at risk of damage from ESD carried by personnel We therefore recommend that all personnel take necessary precautions to avoid the risk of transferring static electricity to components inside the control cabinet If necessary clear warnings and instructions should be provided on the cabinet exterior such as recommending the use of earth straps of similar devices or the powering off of equipment inside the enclosure DLO05 Micro PLC User Manual 6th Edition Rev C 5 Appendix J European Union Directives CE AC Mains Filters
3. C D K Serial Communication Cab Y Equi potential Bond e Adequate site earth grounding must be provided for equipment containing modern electronic circuitry The use of isolated earth electrodes for electronic systems is forbidden in some countries Make sure you check any requirements for your particular destination IEC 1000 5 2 covers equi potential bonding of earth grids adequately but special attention should be given to apparatus and control cubicles that contain I O devices remote I O racks or have inter system communications with the primary PLC system enclosure An equi potential bond wire must be provided alongside all serial communications cables and to any separate items of the plant which contain I O devices connected to the PLC The diagram shows an example of four physical locations connected by a communications cable Communications and Shielded Cables Conductive n Screened E Adapter Cable 1 Serial VO A To Earth Block HHHH Equi potential Bond E Control Cubicle Good quality 24 AWG minimum twisted pair shielded cables with overall foil and braid shields are recommended for analog cabling and communications cabling outside of the PLC enclosure To date it has been a common practice to only provide an earth ground for one end of the cable shield in order to minimize the
4. EUROPEAN UNION PENDIX DinECTIVES CE In This Appendix European Union EU Directives i c exar Rm n J 2 Basic EMC Installation Guidelines llle J 5 Appendix J European Union Directives CE European Union EU Directives NOTE The information contained in this section is intended as a guideline and is based on our interpretation of the various standards and requirements Since the actual standards are issued by other parties and in some cases governmental agencies the requirements can change over time without advance warning or notice Changes or additions to the standards can possibly invalidate any part of the information provided in this section This area of certification and approval is absolutely vital to anyone who wants to do business in Europe One of the key tasks that faced the EU member countries and the European Economic Area EEA was the requirement to bring several similar yet distinct standards together into one common standard for all members The primary purpose of a single standard was to make it easier to sell and transport goods between the various countries and to maintain a safe working and living environment The Directives that resulted from this merging of standards are now legal requirements for doing business in Europe Products that meet these Directives are required to have a CE mark to signify compliance Member Countries As of January 1 2007 the members of the EU are Austri
5. interference in which case the user may be required to take adequate measures General Safety External switches circuit breaker or external fusing are required for these devices The switch or circuit breaker should be mounted near the PLC equipment Automation Direct is currently in the process of changing their testing procedures from the generic standards to the product specific standards DL05 Micro PLC User Manual 6th Edition Rev C J 3 Appendix J European Union Directives CE Ei M Special Installation Manual The installation requirements to comply with the requirements of the Machinery Directive EMC Directive and Low Voltage Directive are slightly more complex than the normal installation requirements found in the United States To help with this we have published a special manual which you can order DA EU M EU Installation Manual that covers special installation requirements to meet the EU Directive requirements Order this manual to obtain the most up to date information Other Sources of Information Although the EMC Directive gets the most attention other basic Directives such as the Machinery Directive and the Low Voltage Directive also place restrictions on the control panel builder Because of these additional requirements it is recommended that the following publications be purchased and used as guidelines BSI publication TH 42073 February 1996 covers the safety and electrical aspects
6. EMC Low Voltage Directive and Machinery Directive requirements of the following standards EMC Directive Standards relevant to PLCs EN50081 1 Generic emission standard for residential commercial and light industry EN50081 2 Generic emission standard for industrial environment EN50082 1 Generic immunity standard for residential commercial and light industry EN50082 2 Generic immunity standard for industrial environment Low Voltage Directive Standards Applicable to PLCs EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Product Specific Standard for PLCs EN61131 2 Programmable controllers equipment requirements and tests This standard replaces the above generic standards for immunity and safety However the generic emissions standards must still be used in conjunction with the following standards EN 61000 3 2 Harmonics EN 61000 3 2 Fluctuations Warning on Electrostatic Discharge ESD We recommend that all personnel take necessary precautions to avoid the risk of transferring static charges to inside the control cabinet and clear warnings and instructions should be provided on the cabinet exterior Such precautions may include the use of earth straps similar devices or the powering off of the equipment inside the enclosure before the door is opened Warning on Radio Interference RFI This is a class A product In a domestic environment this product may cause radio
7. properly installed while adhering to the guidelines of the in house PLC installation manual DA EU M and the installation standards IEC 1000 5 1 IEC 1000 5 2 and IEC 1131 4 It is a requirement that all PLC equipment must be housed in a protective steel enclosure which limits access to operators by a lock and power breaker If access is required by operators or untrained personnel the equipment must be installed inside an internal cover or secondary enclosure It should be noted that the safety requirements of the machinery directive standard ENG0204 1 state that all equipment power circuits must be wired through isolation transformers or isolating power supplies and that one side of all AC or DC control circuits must be earthed Both power input connections to the PLC must be separately fused using 3 amp T type anti surge fuses and a transient suppressor fitted to limit supply overvoltages f the user is made aware by notice in the documentation that if the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired J 10 DLO05 Micro PLC User Manual 6th Edition Rev C
8. risk of noise caused by earth ground loop currents between apparatus The procedure of only grounding one end which primarily originated as a result of trying to reduce hum in audio systems is no longer applicable to the complex industrial environment Shielded cables are also efficient emitters of RF noise from the PLC DL05 Micro PLC User Manual 6th Edition Rev C 7 Appendix J European Union Directives CE i system and can interact in a parasitic manner in networks and between multiple sources of interference The recommendation is to use shielded cables as electrostatic pipes between apparatus and systems and to run heavy gauge equi potential bond wires alongside all shielded cables When a shielded cable runs through the metallic wall of an enclosure or machine it is recommended in IEC 1000 5 2 that the shield should be connected over its full perimeter to the wall preferably using a conducting adapter and not via a pigtail wire connection to an earth ground bolt Shields must be connected to every enclosure wall or machine cover that they pass through Analog and RS232 Cables Providing an earth ground for both ends of the shield for analog circuits provides the perfect electrical environment for the twisted pair cable as the loop consists of signal and return in a perfectly balanced circuit arrangement with connection to the common of the input circuitry made at the m
9. a Belgium Bulgaria Cyprus Czech Republic Denmark Estonia Finland France Germany Greece Hungary Ireland Italy Latvia Lithonia Luxembourg Malta Netherlands Poland Portugal Romania Slovakia Slovenia Spain Sweden and United Kingdom Iceland Liechtenstein and Norway together with the EU members make up the European Economic Area EEA and all are covered by the Directives Applicable Directives There are several Directives that apply to our products Directives may be amended or added as required Electromagnetic Compatibility Directive EMC this Directive attempts to ensure that devices equipment and systems have the ability to function satisfactorily in an electromagnetic environment without introducing intolerable electromagnetic disturbance to anything in that environment Machinery Safety Directive this Directive covers the safety aspects of the equipment installation etc There are several areas involved including testing standards covering both electrical noise immunity and noise generation Low Voltage Directive this Directive is also safety related and covers electrical equipment that has voltage ranges of 50 1000VAC and or 75 1500VDC Battery Directive this Directive covers the production recycling and disposal of batteries Compliance Certain standards within each Directive already require mandatory compliance The EMC Directive which has gained the most attention became m
10. andatory as of January 1 1996 The Low Voltage Directive became mandatory as of January 1 1997 Ultimately we are all responsible for our various pieces of the puzzle As manufacturers we must test our products and document any test results and or installation procedures that are necessary to comply with the Directives As a machine builder you are responsible for J 2 DLO05 Micro PLC User Manual 6th Edition Rev C Appendix J European Union Directives CE TP r installing the products in a manner which will ensure compliance is maintained You are also responsible for testing any combinations of products that may or may not comply with the Directives when used together The end user of the products must comply with any Directives that may cover maintenance disposal etc of equipment or various components Although we strive to provide the best assistance available it is impossible for us to test all possible configurations of our products with respect to any specific Directive Because of this it is ultimately your responsibility to ensure that your machinery as a whole complies with these Directives and to keep up with applicable Directives and or practices that are required for compliance As of August 1 2002 the DL05 DL06 DL205 DL206 DL305 and DL405 PLC systems manufactured by Koyo Electronics Industries FACTS Engineering or HOST Engineering when properly installed and used conform to the Electromagnetic Compatibility
11. emember that these cables may be a source of RF emissions There are ways to minimize this risk Standard data cables connecting PLCs and or operator interfaces should be routed well away from other equipment and their associated cabling You can make special serial cables where the cable shield is connected to the enclosure earth ground at both ends the same way as external cables are connected Analog Modules and RF Interference The readings from all analog modules will be affected by the use of devices that exhibit high field strengths such as mobile phones and motor drives All Automationdirect products are tested to withstand field strength levels up to 10V m which is the maximum required by the relevant EU standards While all products passs this test analog modules will typically exhibit deviations of their readings This is quite normal however systems designers should be aware of this and plan accordingly When assembling a control system using analog modules these issues must be adhered to and should be integrated into the system design This is the responsibility of the system builder commissioner Network Isolation For safety reasons it is a specific requirement of the Machinery Directive that a keyswitch must be provided that isolates any network input signal during maintenance so that remote commands cannot be received that could result in the operation of the machinery The FA ISONET does not have a keyswitch Use a keyloc
12. ent suppressors must be protected by fuses and the capacity of the transient suppressor must be greater than the blow characteristics of the fuses or circuit breakers to avoid a fire risk A recommended AC supply input arrangement for Koyo PLCs is to use twin 3 amp TT fused terminals with fuse blown indication such as DINnectors DN FI0L terminals or twin circuit breakers wired to a Schaffner FN2010 filter or equivalent with high energy transient suppressor soldered directly across the output terminals of the filter PLC system inputs should also be protected from voltage impulses by deriving their power from the same fused filtered and surge suppressed supply Internal Enclosure Grounding A heavy duty star earth terminal block should be provided in every cubicle for the connection of all earth ground straps protective earth ground connections mains filter earth ground wires and mechanical assembly earth ground connections This should be installed to comply with safety and EMC requirements local standards and the requirements found in IEC 1000 5 2 The Machinery Directive also requires that the common terminals of PLC input modules and common supply side of loads driven from PLC output modules should be connected to the protective earth ground terminal J 6 DL05 Micro PLC User Manual 6th Edition Rev C Appendix J European Union Directives CE Equi potential Grounding A B
13. k and switch on your enclosure which when open removes power from the FA ISONET To avoid the introduction of noise into the system any keyswitch assembly should be housed in its own earth grounded steel box and the integrity of the shielded cable must be maintained Again for further information on EU directives we recommend that you get a copy of our EU Installation Manual DA EU M Also if you are connected to the World Wide Web you can check the EU commission official site at http ec europa eu index en htm DC Powered Versions Due to slightly higher emissions radiated by the DC powered versions of the DL05 and the differing emissions performance for different DC supply voltages the following stipulations must be met The PLC must be housed within a metallic enclosure with a minimum amount of orifices e I O and communications cabling exiting the cabinet must be contained within metallic conduit trunking DL05 Micro PLC User Manual 6th Edition Rev C J 9 Appendix J European Union Directives CE Ts Items Specific to the DL05 The rating between all circuits in this product are rated as basic insulation only as appropriate for single fault conditions There is no isolation offered between the PLC and the analog inputs of this product It is the responsibility of the system designer to earth one side of all control and power circuits and to earth the braid of screened cables This equipment must be
14. odule terminals RS232 cables are handled in the same way Multidrop Cables RS422 twin twisted pair and RS485 single twisted pair cables also require a OV link which has often been provided in the past by the cable shield It is now recommended that you use triple twisted pair cabling for RS422 links and twin twisted pair cable for RS485 links This is because the extra pair can be used as the OV inter system link With loop DC power supplies earth grounded in both systems earth loops are created in this manner via the inter system Ov link The installation guides encourage earth loops which are maintained at a low impedance by using heavy equi potential bond wires To account for non European installations using single end earth grounds and sites with far from ideal earth ground characteristics we recommend the addition of 100 ohm resistors at each OV link connection in network and communications cables Last Slave Slave n Master TXD OV RXD TXD OV RXD RXD OV TXD AR 5 Eos H 100Q 100Q os T 00 Oo Oo 1000 Termination Termination J 8 DL05 Micro PLC User Manual 6th Edition Rev C Appendix J European Union Directives CE E 7 Shielded Cables within Enclosures When you run cables between PLC items within an enclosure which also contains susceptible electronic equipment from other manufacturers r
15. of the Machinery Directive EN 60204 1 1992 General electrical requirements for machinery including Low Voltage and EMC considerations e IEC 1000 5 2 EMC earthing and cabling requirements e IEC 1000 5 1 EMC general considerations It may be possible for you to obtain this information locally however the official source of applicable Directives and related standards is The Office for Official Publications of the European Communities L 2985 Luxembourg quickest contact is via the World Wide Web at http euro op eu int indexn htm Another source is British Standards Institution Sales Department Linford Wood Milton Keynes MK14 6LE United Kingdom the quickest contact is via the World Wide Web at http www bsi org uk J 4 DLO05 Micro PLC User Manual 6th Edition Rev C Appendix J European Union Directives CE T Pr Basic EMC Installation Guidelines Enclosures The following diagram illustrates good engineering practices supporting the requirements of the Machinery and Low Voltage Directives House all control equipment in an industry standard lockable steel enclosure and use metallic conduit for wire runs and cables may be required for CE compliance DL205 system shown but DL05 see Declaration of Conformity for enclosure concepts are the same A specific product requirements Mains fused isolation transformer Ferrite choke on Communications keyed lockout switch EA
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