1、 Reference number ISO 23570-2:2005(E) ISO 2005INTERNATIONAL STANDARD ISO 23570-2 First edition 2005-11-01 Industrial automation systems and integration Distributed installation in industrial applications Part 2: Hybrid communication bus Systmes dautomatisation industrielle et intgration Installation
2、 distribue dans les applications industrielles Partie 2: Bus de communication hybride ISO 23570-2:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are
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7、 2005 All rights reservedISO 23570-2:2005(E) ISO 2005 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Conformance. 1 3 Normative references . 1 4 Terms and definitions. 2 5 Requirements 2 5.1 General. 2 5.2 Fibre optic based systems. 3 5.3 Twisted pair based systems 4
8、5.4 Module . 5 5.5 Power supplies 6 Annex A (informative) Reference colours 7 Annex B (normative) Design specification for fibre optic hybrid connectors. 8 Annex C (normative) Design specification for twisted pair connectors 21 Index 27 ISO 23570-2:2005(E) iv ISO 2005 All rights reservedForeword ISO
9、 (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical com
10、mittee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrot
11、echnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the mem
12、ber bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identify
13、ing any or all such patent rights. ISO 23570-2 was prepared by Technical Committee ISO/TC 184, Industrial automation systems and integration, Subcommittee SC 1, Physical device control. ISO 23570 consists of the following parts, under the general title Industrial automation systems and integration D
14、istributed installation in industrial applications: Part 1: Sensors and actuators Part 2: Hybrid communication bus Part 3: Power distribution bus ISO 23570-2:2005(E) ISO 2005 All rights reserved v Introduction Modern machine tools for the discrete parts manufacturing industry are complex systems, co
15、nsisting of subsystems for material preparation (metal removal, material forming, etc.), material handling, fixturing and transfer lines for moving parts from one station to another. Each subsystem, in turn, is itself a complex system, including many sensors, actuators and control elements that rece
16、ive and transmit electric signals and/or require electric power. To reduce down time in case of failure, most of them use cable assemblies for quick replacement. Proper operation of the system as a whole requires co-ordination of the subsystems, which requires more cables and connectors. As a conseq
17、uence of this complexity, a large variety of cables and connectors is required for the proper operation of such a machine tool. The increasing number of sensors, actuators and control elements leads to an increasing variety of such cable assemblies. This variety results in increased maintenance cost
18、s, due to complexity, large spare parts inventory and increased training costs for maintenance personnel. Key 1 motor with integrated electronics (e.g. a stepping motor) 2 fixed speed motor with separate motor controller 3 power distribution and control cabinet 4 fixed speed motor with attached moto
19、r controller 5 variable speed motor with integrated I/O module together with sensors and actuators 6 I/O module with a set of sensors 7 motor with integrated electronics (e.g. a stepping motor) 8 I/O module connected to a set of sensors and actuators including a hydraulic/pneumatic valve 9 remote co
20、ntrol terminal Figure 1 System components addressed in ISO 23570 ISO 23570-2:2005(E) vi ISO 2005 All rights reservedISO 23570 prescribes a set of requirements for cables, connectors, and parameter selections within these elements, which, if implemented completely, will greatly reduce the wiring comp
21、lexity and maintenance cost of such machine systems. Benefits will occur to the manufacturer of such systems in the form of decreased complexity costs and to the user of such systems in the form of decreased down time because of decreased parts inventory and simplified maintenance training. The tech
22、nology described in ISO 23570 may have applicability to other industries and processes; there is no intention of restricting it to discrete parts manufacturing. There are three main areas addressed within ISO 23570: the interconnection of sensors and actuators to the system backbone; a hybrid system
23、 backbone containing an information path (a fieldbus) and a source of power to the field devices; a power trunk capable of providing power to all the auxiliary motors in the system. Large power devices, such as spindle motors for metal removal, are not covered by ISO 23570. Machine tools described i
24、n ISO 23570 are subject to constraints imposed by national and international safety standards. It is the intent of ISO 23570 to specify system elements that support the compliance with such standards. In Figure 1, the solid cable represents the power distribution bus providing three-phase a.c. power
25、 for electric motors. The open cable represents a hybrid communication bus, containing both a fieldbus communication channel and low voltage power. The centre of Figure 1 shows (3) a control cabinet serving three sets of distribution buses. This box contains the fieldbus communication front end, the
26、 low voltage power supplies and the three-phase power supplies. To the left of the control cabinet are (1) a motor with integrated electronics and (2) a fixed speed motor with a separate motor controller. Both units are linked to the control cabinet by both the communication bus and the power distri
27、bution bus. To the right of the control cabinet are (4) a fixed speed motor with an attached motor controller, (5) a variable speed motor with an integrated I/O module connected to several sensors and actuators, and (6) another I/O module connected to several sensors and actuators, including a hydra
28、ulic/pneumatic valve. The I/O module (6) is linked to the control cabinet only by the hybrid communication bus. In front of the control cabinet are three more units, (7) a motor with integrated electronics, (8) another I/O module connected to several sensors and actuators including a hydraulic/pneum
29、atic valve, and (9) a remote control terminal. Figure 1 is intended to illustrate the variety of interconnections possible using the elements of ISO 23570. ISO 23570-1 provides the requirements for sensors, actuators, and I/O modules that support this system requirement. This part of ISO 23570 provi
30、des the requirements for a shared communication and low voltage power distribution system. ISO 23570-3 provides the requirements for distribution of power to the low power motor systems. While significant reduction in maintenance and operational costs may be achieved by adoption of individual parts
31、of ISO 23570, the greatest benefit will occur only if all parts are implemented. This part of ISO 23570 provides the requirements for a shared communication and low voltage power distribution system that support this system requirement. INTERNATIONAL STANDARD ISO 23570-2:2005(E) ISO 2005 All rights
32、reserved 1 Industrial automation systems and integration Distributed installation in industrial applications Part 2: Hybrid communication bus 1 Scope This part of ISO 23570 specifies the interconnection of elements in the control system of machine tools and similar large pieces of industrial automat
33、ion. This specification includes cable types, sizes and sheath colours, connector types and contact assignments, and diagnostic functions appropriate to the sensors and actuators. This part of ISO 23570 specifies the cabling for fieldbus communications and the distribution of power to the modules on
34、 this communications bus. This part of ISO 23570 does not address operation of such equipment with respect to safety issues. Appropriate safety standards should be consulted for such requirements. 2 Conformance Producers of modules, connectors, cable and cable assemblies may claim conformance to thi
35、s part of ISO 23570 if they meet the requirements of Clause 5, including either 5.2 or 5.3. Producers of discrete part manufacturing equipment may claim conformance to this part of ISO 23570 if all the components of the discrete part manufacturing equipment that are subject to the requirements of Cl
36、ause 5 meet those requirements consistent with either 5.2 or 5.3. 3 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docum
37、ent (including any amendments) applies. IEC 60204-1:2000, Ed. 4.1, Safety of machinery Electrical equipment of machines Part 1: General requirements IEC 61076-2-101:2004, Connectors for electronic equipment Part 2-101: Circular connectors Detail specification for circular connectors M8 with screw- o
38、r snap-locking, M12 with screw-locking for low voltage applications IEC 60529:2001 Ed. 2.0, Degrees of protection provided by enclosures (IP code) IEC 60793-2-40:2002-03, Optical fibres Part 2-40: Product specifications Sectional specification for category A4 multimode fibres ISO 23570-2:2005(E) 2 I
39、SO 2005 All rights reserved4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 IP Code coding system to indicate the degrees of protection provided by an enclosure against access to hazardous parts, ingress of solid foreign objects, ingress of wa
40、ter and to give additional information in connection with such protection IEC 60529 4.2 module network unit capable of communicating on the communication bus 4.3 network unit unit present on the hybrid communication bus, which draws its power from one of the power circuits in that bus 4.4 M12 connec
41、tor meeting the requirements of IEC 61076-2-101, whose diameter is 12 mm 4.5 M121 M12 connector with a threaded coupling whose threads have a pitch of 1 mm 4.6 POF plastic optical fibre 4.7 LED light emitting diode 5 Requirements 5.1 General This part of ISO 23570 specifies a hybrid cable system cap
42、able of supporting fieldbus communications and of supplying auxiliary power to components on the bus. Two approaches to a communication channel are provided, one based on fibre optics and the other based on twisted pair cabling. This part of ISO 23570 also requires the system to support two independ
43、ent 24 volt DC supply systems. NOTE The intention behind specifying these dual power systems is to provide the system designer with a facility by which safety related devices can be switched off independently of one another. For the purposes of this part of ISO 23570, the two power supplies shall be
44、 identified as A and B. Power supply A is the supply that is assumed to be unswitched; power supply B is the supply that is assumed to be switched. The network topology supported by this part of ISO 23570 is that of a daisy chained multi-drop system. These network elements may be combined into a sta
45、r topology; however, requirements on star topology networks are outside the scope of this part of ISO 23570. ISO 23570-2:2005(E) ISO 2005 All rights reserved 3 Each unit on the network shall be equipped with two connectors, one looking upstream to the power supplies, and the other looking downstream
46、. All components specified by ISO 23570 shall be rated IP65 and IP67 as defined in IEC 60529. All low voltage control cables that are not otherwise specified in ISO 23570 shall have a sheath colour of grey. 5.2 Fibre optic based systems 5.2.1 Cables and cable assemblies Each cable shall contain two
47、POF wave-guides, one for transmitting and one for receiving. The fibre optics shall have nominal characteristics as given in IEC 60793-2-40:2002 for fibre type A4. Each cable shall contain 4 copper wires, whose cross-sectional area is between 1,5 mm 2and 2,5 mm 2 . The cable sheath shall be resistan
48、t to all common industrial lubricants and coolants. The supplier of cable assemblies shall provide a list of lubricants and coolants that are compatible with the cable. The sheath colour shall be violet. NOTE See Annex A for further elaboration of the colour specification. A network connector meetin
49、g the requirements of 5.2.2 shall terminate each end of a cable assembly. One end of the cable assembly shall have male connections for copper circuits; the other end shall have female connections for the copper circuits. The connectors for the fibre optic channels shall be male at both ends of the cable assembly. Some uses of such cables may require constant flexing such as use in drag chain operations. The cable shall be characterized as to whether it is suitable for such an operation. 5.2.2 Connectors Co
