turck BL20-GW-CANOPEN User Manual
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turck BL20-GW-CANOPEN User Manual

Bl20 series for canopen
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  • Page 1 – BL20 USER MANUAL CANopen...
  • Page 2 No part of this manual may be reproduced in any form (printed, photocopy, microfilm or any other process) or processed, duplicated or distributed by means of electronic systems without written permission of Hans Turck GmbH & Co. KG, Muelheim an der Ruhr. Subject to alterations without notice...
  • Page 3 Safety Notes! Before starting the installation Disconnect the power supply of the device. Ensure that devices cannot be accidentally restarted. Verify isolation from the supply. Earth and short circuit. Cover or enclose neighboring units that are live. Follow the engineering instructions (AWA) of the device concerned. Only suitably qualified personnel in accordance with EN 50 110-1/-2 (VDE 0 105 Part 100) may work on this device/system.

  • Page 5: Table Of Contents

    Structure Diagram of a Gateway...............................4-8 4.4.3 Technical Data BL20-GW-CANOPEN..............................4-8 4.4.4 Technical Data BL20-GWBR-CANOPEN ............................4-9 Connections for data cables to BL20-GW-CANOPEN ................. 4-10 4.5.1 Fieldbus connection via SUB-D socket ............................4-10 4.5.2 Fieldbus connection through direct wiring..........................4-10 Connections of the data cables to BL20-GWBR-CANopen ................ 4-12 4.6.1...
  • Page 6 4.6.2 Service Interface Connection ................................4-14 Setting the bit transfer rate through DIP-switches..................4-15 Node-ID Setting ............................4-17 Acceptance of the BL20 Station Configuration ..................4-19 4.10 Status Indicators/ Diagnostic Messages Gateway ..................4-20 4.10.1 Diagnostic Messages via LEDs ................................4-20 BL20 - Communication in CANopen Guidelines for Station Planning Random Module Arrangement ........................
  • Page 7 7.5.1 Switching Inductive Loads................................7-10 7.5.2 Protection against Electrostatic Discharge (ESD) ........................7-10 Bus Connection............................. 7-11 Two-Pole Shield Connection........................7-12 BL20-Approvals for Zone 2/ Division 2 Glossary Index D301087 1211 - BL20 CANopen...
  • Page 8 D301087 1211 - BL20 CANopen...

  • Page 9: About This Manual

    About this Manual Documentation Concept ........................2 Description of Symbols Used ......................3 Overview ............................4 1.3.1 Prescribed Use ............................. 4 1.3.2 Notes Concerning Planning /Installation of this Product..............4 List of Revisions ..........................5 D301087 1211 - BL20 CANopen...

  • Page 10: Documentation Concept

    About this Manual Documentation Concept This manual contains all information about the BL20-gateway for CANopen (BL20-GW-CANOPEN, BL20-GWBR-CANOPEN). The following chapters contain a short BL20 system description, a description of the field bus system CANopen, exact information about function and structure of the BL20 CANopen-gateway as well as all bus-specific information concerning the connection to automation devices, the maximum system extension etc.

  • Page 11: Description Of Symbols Used

    Description of Symbols Used Description of Symbols Used Danger This sign can be found next to all notes that indicate a source of hazards. This can refer to danger to personnel or damage to the system (hardware and software) and to the facility. This sign means for the operator: work with extreme caution.

  • Page 12: Overview

    About this Manual Overview Attention Please read this section carefully. Safety aspects cannot be left to chance when dealing with electrical equipment. This manual includes all information necessary for the prescribed use of BL20 products. It has been specially conceived for personnel with the necessary qualifications. 1.3.1 Prescribed Use Danger...

  • Page 13: List Of Revisions

    List of Revisions List of Revisions In comparison to the previous manual edition, the following changes/ revisions have been made: Table 1-1: Chapter Subject/Description changed deleted List of revisions BL20 - Communication in CANopen/ Diagnostics - Emergency Frames → seperate manual D301230 BL20-Approvals for Zone 2/ Division 2 →...
  • Page 14 About this Manual D301087 1211 - BL20 CANopen...

  • Page 15: Bl20 Philosophy

    BL20 Philosophy The Basic Concept ..........................2 BL20 Components ..........................3 2.2.1 Gateways.............................. 3 – Gateways with integrated power supply ................... 3 – Gateways without power supply ...................... 3 2.2.2 Power Distribution Modules ......................... 3 2.2.3 Electronics Modules ..........................4 2.2.4 Base Modules............................

  • Page 16: The Basic Concept

    BL20 Philosophy The Basic Concept BL20 is a modular I/O system for use in industrial automation. It connects the sensors and actuators in the field with the higher-level master. BL20 offers modules for practically all applications: Digital input and output modules Analog input and output modules Technology modules (counters, RS232 interface...) A complete BL20 station counts as one station on the bus and therefore occupies one fieldbus address...

  • Page 17: Bl20 Components

    BL20 Components BL20 Components For a detailed explanation of the individual BL20 components, please refer to chapter 2 and chapter 4. The "Appendix" to this manual contains (amongst others) a list of all BL20 components and the assignment of electronics modules to base modules. 2.2.1 Gateways The gateway connects the fieldbus to the I/O modules.

  • Page 18: Electronics Modules

    BL20 Philosophy The power supply for gateways and I/O modules is fed to the power distribution modules; therefore, it is not necessary to supply each individual module with a separate voltage. Figure 2-2: Power distribu- tion module 2.2.3 Electronics Modules Electronics modules contain the functions of the BL20 modules (power distribution modules, digital and analog input/output modules, and technology modules).

  • Page 19: Base Modules

    BL20 Components Figure 2-4: Electronics module in block design 2.2.4 Base Modules The field wiring is connected to the base modules. These are constructed as terminals in block and slice designs and are available in the following variations with either tension clamp or screw connections: 2- /3-wire (2-channel), 4-wire (2-channel) and 4x 2-/3-wire (4-channel).
  • Page 20 BL20 Philosophy Figure 2-6: Base module with screw connection Figure 2-7: Base module in block design D301087 1211 - BL20 CANopen...

  • Page 21: End Plate

    BL20 Components 2.2.5 End Plate An end plate on the right-hand side physically completes the BL20 station. An end bracket mounted into the end plate ensures that the BL20 station remains secure on the mounting rail even when subjected to vibration. Figure 2-8: End plate 2.2.6...

  • Page 22: Jumpers

    BL20 Philosophy 2.2.7 Jumpers Jumpers (QVRs) are used to bridge a connection level of a 4-wire base module. They can be used to connect potentials in relay modules (bridging the relay roots); thus considerably reducing the amount of wiring. Figure 2-10: Jumpers 2.2.8 Marking Material...

  • Page 23: Shield Connection, 2-Pole For Analog Modules

    BL20 Components 2.2.9 Shield Connection, 2-Pole for Analog Modules The 2-pole shield connection can be used to connect signal-cable shielding to the base modules of analog input and output modules. A special tension-clamp operating tool (BL20-ZBW5-2) is required to mount the shield connection onto the base module. Figure 2-12: Shield connection D301087 1211 - BL20 CANopen...
  • Page 24 BL20 Philosophy 2-10 D301087 1211 - BL20 CANopen...

  • Page 25: Short Description Of Canopen

    Short description of CANopen CANopen ............................2 3.1.1 General ..............................2 3.1.2 Communication ............................ 3 – Network Management Messages...................... 3 – Service Data Objects (SDOs)......................3 – Process Data Objects (PDOs) ......................4 – Special Function Objects ........................4 BL20 and CANopen ........................... 5 Electronic data sheet –...

  • Page 26: Canopen

    Short description of CANopen CANopen Note The following description of CANopen is an excerpt from the homepage of CiA (CAN in Automation), the international users’ and manufacturers’ organization for CAN. 3.1.1 General CANopen is an open, non-proprietary network protocol. It consists of a profile family, based on a communication profile and several device profiles.

  • Page 27: Communication

    CANopen 3.1.2 Communication The lower layers of CANopen are defined according to the ISO-OSI model in the ISO 11898 standard. Communication between the individual nodes is made by transmitting "Telegrams". 4 different types of telegram message are defined for CANopen: Network management messages Service data objects SDO Process data objects PDO...

  • Page 28: Process Data Objects (Pdos)

    Short description of CANopen Process Data Objects (PDOs) Process Data Objects (PDOs) are mapped to a single CAN frame using up to 8 bytes of the data field to transmit application objects. Each PDO has a unique identifier and is transmitted by only one node, but it can be received by more than one (producer/consumer communication).

  • Page 29: Bl20 And Canopen

    BL20 and CANopen BL20 and CANopen BL20 supports the following CANopen functions: SDO transfer, any length of information Emergency object Sync frame evaluation Event-driven PDOs Synchronous PDOs (clock-synchronous) Remote-requested PDO/polling D301087 1211 - BL20 CANopen...

  • Page 30: Electronic Data Sheet - Eds File

    (Electronic Data Sheet). The EDS file lists all necessary Objects with their corresponding Sub-indices and the matching entries. The latest version of a particular EDS file can be downloaded directly from the TURCK Homepage www.turck.com. D301087 1211 - BL20 CANopen...

  • Page 31: Bl20 - Gateway For Canopen

    Structure Diagram of a Gateway ......................8 4.4.3 Technical Data BL20-GW-CANOPEN ....................8 4.4.4 Technical Data BL20-GWBR-CANOPEN ..................... 9 Connections for data cables to BL20-GW-CANOPEN............... 10 4.5.1 Fieldbus connection via SUB-D socket....................10 4.5.2 Fieldbus connection through direct wiring ..................10 Connections of the data cables to BL20-GWBR-CANopen...............

  • Page 32: Introduction

    The behavior of the analog inputs is now adapted to the actual CANopen standard DS401. The firmware versions ≥ 4.02 for BL20-GW-CANOPEN and version ≥ 2.02 for BL20-GWBR- CANOPEN are thus not compatible with older firmware versions relating to the behavior of the analog inputs.

  • Page 33: Function

    Function Function The BL20 gateways enable BL20 modules to operate on CANopen. The gateway is the connection between the BL20 modules and a CANopen host system. It regulates the process data between the I/O level and the fieldbus and generates diagnostic data for the higher-level host system. Information is made available to the software tool I/O-ASSISTANT via the service interface.

  • Page 34: Technical Information

    BL20 - Gateway for CANopen Technical Information Figure 4-1: BL20-GW- GWBR- CANOPEN CANOPEN Bit Rate A Service interface B Type designa- tion C LEDs for module bus D DIP-switch for transfer rate CAN H E Rotary encod- SHLD ing switch for CAN L Node-ID F SET button...

  • Page 35: Technical Data

    Technical Data Technical Data 4.4.1 General Technical Data Relating to a Station Note The auxiliary power supply must comply with the stipulations of SELV (Safety Extra Low Voltage) according to IEC 364-4-41. Table 4-1: Supply voltage/ auxiliary voltage General technical Nominal value (provision for other modules) 24 V DC data (station)
  • Page 36 BL20 - Gateway for CANopen Height of fall 1.0 m / 39.37 inch Weight 10 to 40 kg Height of fall 0.5 m / 19.69 inch Test runs Device with packaging, electrically tested printed-circuit board Electromagnetic compatibility (EMC) according to EN 50 082-2 (Industry) Static electricity according to EN 61 000-4-2 –...

  • Page 37: Approvals

    Technical Data Danger This device can cause radio disturbances in residential areas and in small industrial areas (residential, business and trading). In this case, the operator can be required to take appropriate measures to suppress the disturbance at his own cost. Approvals Table 4-2: Approvals...

  • Page 38: Structure Diagram Of A Gateway

    (External) interface (Internal) External – internal RAM ROM flash – WDG – CAN-Ctr. 4.4.3 Technical Data BL20-GW-CANOPEN Table 4-4: Designation Value Technical data Supply voltage(as per EN 61131-2) BL20-GW- CANOPEN Nominal value (supply from 5 V DC (4.8 to 5.2 V DC)

  • Page 39: Technical Data Bl20-Gwbr-Canopen

    Technical Data 4.4.4 Technical Data BL20-GWBR-CANOPEN Table 4-5: Designation Value Technical data Supply BL20-GWBR- CANOPEN Field supply Nominal value (range) 24 V DC (18 to 30 V DC) max. field current 10 A Isolation voltage (U to U to fieldbus/ 500V to FE) Connections...

  • Page 40: Connections For Data Cables To Bl20-Gw-Canopen

    Fieldbus connection through direct wiring For making connections to the fieldbus you can choose between a SUB-D connection and direct wiring. Direct wiring of the BL20-GW-CANOPEN to the CANopen fieldbus can be made through the two terminal blocks with tension spring connectors.
  • Page 41 Connections for data cables to BL20-GW-CANOPEN The passive bus termination must be applied externally if the BL20 gateway is the last station in the bus structure. Table 4-7: Designation Meaning List of connecting CAN_L Inverted data signal (dominant low) leads for direct...

  • Page 42: Connections Of The Data Cables To Bl20-Gwbr-Canopen

    BL20 - Gateway for CANopen Connections of the data cables to BL20-GWBR-CANopen 4.6.1 Fieldbus connection via Open Style connector An Open Style Connector (5-pole) is available for connecting the BL20-GWBR-CANOPEN to the CANopen fieldbus. The passive bus termination must be applied externally if the BL20 gateway is the last station in the bus structure.
  • Page 43 Connections of the data cables to BL20-GWBR-CANopen Figure 4-9: Shielding connec- tion for an BL20-GWBR- CANOPEN Attention No compensating current should flow through the shielding. To achieve this, a reliable system of equipotential bonding must be installed. 4-13 D301087 1211 - BL20 CANopen...

  • Page 44: Service Interface Connection

    The following cable can be used to connect the service interface (female PS/2 connector) to a PC for the purpose of using I/O-ASSISTANT (project planning and diagnostic software). special I/O-ASSISTANT-connection cable from TURCK (IOASSISTANT-ADAPTERKABEL-BL20/BL67; Ident-no.: 6827133) Connection with I/O-ASSISTANT-Connection Cable...

  • Page 45: Setting The Bit Transfer Rate Through Dip-Switches

    Setting the bit transfer rate through DIP-switches Setting the bit transfer rate through DIP-switches The BL20 gateway can communicate with other CANopen nodes at the following transfer rates: 10 kbps 250 kbps 20 kbps 500 kbps 50 kbps 800 kbps 125 kbps 1000 kbps The default transfer rate is 125 kbps.
  • Page 46 BL20 - Gateway for CANopen Set the DIP-switches for the required transfer rate according to the following table: Table 4-10: Bit transfer rate (kbps) DIP-switches (setting) Setting the transfer rate 1 000 reserved Note The DIP-switches are in the “1” position when they are set to the right, as viewed from the front.

  • Page 47: Node-Id Setting

    A Node-ID is assigned to every BL20 gateway in the CANopen structure. The setting for the Node-ID of the BL20-GW-CANOPEN in a CANopen structure is made through the two rotary hex encoding switches. The setting for the Node-ID of the BL20-GWBR-CANOPEN is made through the two rotary decimal encoding switches.
  • Page 48 BL20 - Gateway for CANopen Note After setting the Node-ID, the protective cover over the switches must be closed again. chapter 6 Maximum System Extension, page 6-2. Note BL20 does not support the assignment of Node-IDs across the bus network. 4-18 D301087 1211 - BL20 CANopen...

  • Page 49: Acceptance Of The Bl20 Station Configuration

    Acceptance of the BL20 Station Configuration Acceptance of the BL20 Station Configuration When making a new configuration of the BL20 station or an alteration of the existing station structure (“Module list”), the current configuration must be accepted in the CANopen mirror of the BL20 gateway. This is done through the configuration button between the two rotary encoding switches.

  • Page 50: Status Indicators/ Diagnostic Messages Gateway

    2 LEDs for module bus communication (module bus LEDs): GW and IOs 2 LEDs for CANopen communication (fieldbus LEDs): ERR and Bus The LED diagnoses shown below apply to both gateway versions: BL20-GW-CANOPEN BL20-GWBR-CANOPEN An additional diagnosis indication is shown for the BL20-GWBR-CANOPEN. Table 4-11: Status...
  • Page 51 Status Indicators/ Diagnostic Messages Gateway Table 4-11: Status Meaning Remedy LED indicators CPU not supplied. Check the voltage supply. Green Module bus is running, the configured module bus station corresponds to the physically connected station, communication is active. Green, Station is in the Deactivate the flashing, I/O-ASSISTANT Force Mode.
  • Page 52 BL20 - Gateway for CANopen Table 4-11: Status Meaning Remedy LED indicators No errors in communication – between the BL20-CANopen gateway and other CANopen nodes Faulty or interrupted – Check that the fieldbus ends with a communication between BL20- termination resistor, if the BL20- CANopen gateway and other CANopen gateway is the last node CANopen.

  • Page 53: Bl20 - Communication In Canopen

    BL20 - Communication in CANopen Note The CANopen-description for BL20 can be found in a separate manual „BL×× CANopen- object register “ D301230 unter www.turck.de. D301087 1211 - BL20 CANopen...
  • Page 54 BL20 - Communication in CANopen D301087 1211 - BL20 CANopen...

  • Page 55: Guidelines For Station Planning

    Guidelines for Station Planning Random Module Arrangement ......................2 6.1.1 Complete Planning ..........................2 6.1.2 Maximum System Extension ........................ 2 Power Supply ............................ 4 6.2.1 Gateway Supply ........................... 4 6.2.2 Module Bus Refreshing ........................4 6.2.3 Creating Potential Groups ........................8 6.2.4 Protecting the Service Interface on the Gateway.................

  • Page 56: Random Module Arrangement

    Guidelines for Station Planning Random Module Arrangement The arrangement of the I/O-modules within a BL20 station can basically be chosen at will. Nevertheless, it can be useful with some applications to group certain modules together. Note The mixed usage of base modules with screw connections and base modules with tension clamp connections requires a further power supply module to be mounted.
  • Page 57 Random Module Arrangement The following overview shows the maximum number of channels possible, on condition that the entire station is made up of that respective type of channel only: Table 6-1: Channels Modules Maximum system extension Type Max. no. Type Max.

  • Page 58: Power Supply

    Guidelines for Station Planning Power Supply 6.2.1 Gateway Supply Note On a BL20 station including a gateway without integrated power supply unit, the first module to be mounted after the gateway is a Bus Refreshing module with either a BL20-P3x-SBB or a BL20-P4x-SBBC base module with tension clamp or screw connection.
  • Page 59 Power Supply Example 2: The BL20 station comprises 15 BL20-1AI-U(-10/0...+10VDC) modules, 10 BL20-2AO-U(-10/0...+10VDC) modules, 10 BL20-2DI-24VDC-P modules and 5 BL20-2DO-24VDC-0.5A-P modules. The required number of Bus Refreshing modules is calculated as follows: Gateway 430 mA 15 BL20-1AI-U(-10/0...+10VDC) 15 x 41 mA 615 mA 10 BL20-2AO-U(-10/0...+10VDC) 10 x 43 mA...
  • Page 60 Guidelines for Station Planning Table 6-2: Module Supply Nominal current consumption Nominal current consumption of the BL20 modules on the module bus BL20-E-16DI-24VDC-P 15 mA BL20-32DI-24VDC-P 30 mA BL20-1AI-I(0/4...20MA) 41 mA BL20-2AI-I(0/4...20MA) 35 mA BL20-1AI-U(-10/0...+10VDC) 41 mA BL20-2AI-U(-10/0...+10VDC) 35 mA BL20-2AI-PT/NI-2/3 45 mA BL20-2AI-THERMO-PI...
  • Page 61 Power Supply If the power supply from the module bus is not guaranteed, thereby making a further Bus Refreshing module necessary, the software I/O-ASSISTANT generates an error message when the user activates the command “Station → Verify“. Note Bus Refreshing modules which do not supply the gateway with power are to be combined with either a BL20-P3T-SBB-B or a BL20-P4T-SBBC-B (tension clamp connection) base module or with the base modules BL20-P3S-SBB-B or BL20-P4S-SBBC-B (screw connection).

  • Page 62: Creating Potential Groups

    Guidelines for Station Planning 6.2.3 Creating Potential Groups Bus Refreshing and Power Feeding modules can be used to create potential groups. The potential isolation of potential groups to the left of the respective power distribution modules is provided by the base modules.

  • Page 63: C-Rail (Cross Connection)

    Power Supply 6.2.5 C-Rail (Cross Connection) The C-rail runs through all base modules. The C-rail of the base modules for power distribution modules is mechanically separated; thus potentially isolating the adjoining supply groups. Access to the C-rail is possible with the help of base modules with a C in their designation (for example, BL20-S4T-SBCS).

  • Page 64: Direct Wiring Of Relay Modules

    Guidelines for Station Planning Figure 6-6: Gateway 2 DO 2 DI 2 DO 2 DI 2 DO 2 DI 2 DO 2 DI Using the C-rail as a protective earth terminal C-rail (PE) C-rail (PE) SBBC SBBC SBBC SBBC C-rails can be used for a common voltage supply when relay modules are planned. To accomplish this, the load voltage is connected to a Power Feeding module with the BL20-P4x-SBBC base module with tension clamp or screw connection.

  • Page 65: Plugging And Pulling Electronics Modules

    Plugging and Pulling Electronics Modules Plugging and Pulling Electronics Modules BL20 enables the pulling and plugging of electronics modules without having to disconnect the field wiring. The BL20 station remains in operation if an electronics module is pulled. The voltage and current supplies as well as the protective earth connections are not interrupted.

  • Page 66: Extending An Existing Station

    Guidelines for Station Planning Extending an Existing Station Attention Please note that extensions to the station (mounting further modules) should be carried out only when the station is off-circuit. Once alterations have been made to the order of the modules on the BL20 station, the new configuration must be saved to the ”actual configuration memory”...

  • Page 67: Firmware Download

    Firmware Download Firmware Download Firmware can be downloaded via the service interface on the gateway using the software tool I/O-ASSISTANT. More information is available in the program’s online help. Attention The station should be disconnected from the fieldbus when downloading. Firmware must be downloaded by authorized personnel only.
  • Page 68 Guidelines for Station Planning 6-14 D301087 1211 - BL20 CANopen...

  • Page 69: Guidelines For Electrical Installation

    Guidelines for Electrical Installation General Notes............................ 2 7.1.1 General ..............................2 7.1.2 Cable Routing ............................2 7.1.3 Cable Routing Inside and Outside of Cabinets: ................... 2 – Cable Routing Outside Buildings ...................... 2 7.1.4 Lightning Protection ..........................3 7.1.5 Transmission Cables ..........................3 7.1.6 Cable Types............................

  • Page 70: General Notes

    Guidelines for Electrical Installation General Notes 7.1.1 General Cables should be grouped together, for example: signal cables, data cables, heavy current cables, power supply cables. Heavy current cables and signal or data cables should always be routed in separate cable ducts or bundles.

  • Page 71: Lightning Protection

    Representation of a bus cable terminating terminating resistor resistor Station 0 Station x Station 63 7.1.6 Cable Types TURCK offers a variety of premoulded bus cables - please refer to the BL20-catalog (TURCK documentation number: D300418). D301087 1211 - BL20 CANopen...

  • Page 72: Potential Relationships

    Guidelines for Electrical Installation Potential Relationships 7.2.1 General The potential relationship of a CANopen system realized with BL20 modules is characterized by the following: The system’s power supply to the gateway, I/O modules and the field level is distributed via a Bus Refreshing module.

  • Page 73: Electromagnetic Compatibility (Emc)

    Electromagnetic Compatibility (EMC) Electromagnetic Compatibility (EMC) BL20 products comply in full with the requirements pertaining to EMC regulations. Nevertheless, an EMC plan should be made before installation. Hereby, all potential electromechanical sources of interference should be considered such as galvanic, inductive and capacitive couplings as well as radiation couplings.

  • Page 74: Mounting Rails

    Guidelines for Electrical Installation Protect against high frequency interference signals Attention In order to comply with radiation limit values in accordance with EN 55 011/2 000, the supply lines of the power distribution module BL20-BR-24VDC-D for supplying the gateway with power are to be fed through a ferrite ring (BL20PS416-ZBX-405).

  • Page 75: Emc Compliant Cabinet Installation

    Electromagnetic Compatibility (EMC) 7.3.6 EMC Compliant Cabinet Installation Figure 7-4: EMC compliant cabinet installa- tion A Bonding straps Bonding straps connect inactive metal components, if it is not possible to create a large surface area contact. Use short bonding straps with large surface areas. B Mounting plates Mounting plates used to hold control components must have a large surface area contact with the cabinet housing.

  • Page 76: Shielding Of Cables

    Guidelines for Electrical Installation Shielding of cables Shielding is used to prevent interference from voltages and the radiation of interference fields by cables. Therefore, use only shielded cables with shielding braids made from good conducting materials (copper or aluminum) with a minimum degree of coverage of 80 %. The cable shield should always be connected to both sides of the respective reference potential (if no exception is made, for example, such as high-resistant, symmetrical, analog signal cables).

  • Page 77: Potential Compensation

    Potential Compensation Potential Compensation Potential differences can occur between installation components that are in separate areas and these are fed by different supplies, have double-sided conductor shields which are grounded on different installation components. A potential-compensation cable must be routed to the potential compensation. Danger Never use the shield as a potential compensation.

  • Page 78: Switching Inductive Loads

    Guidelines for Electrical Installation Compensation cables and data cables should be routed as close together as possible, meaning the enclosed area should be kept as small as possible. Figure 7-6: Potential compensation between switch- gear cabinets Potential compensation 7.5.1 Switching Inductive Loads In the case of inductive loads, a protective circuit on the load is recommended.

  • Page 79: Bus Connection

    Bus Connection Bus Connection An Open Style Connector (5-pole) is available for connecting the BL20-GWBR-CANopen to the CANopen fieldbus. The shield connection is made via the shielding braid of the cable. For detailed information about the bus connection of the gateway please refer to chapter 4.6, Connections of the data cables to BL20-GWBR-CANopen (page...

  • Page 80: Two-Pole Shield Connection

    Guidelines for Electrical Installation Two-Pole Shield Connection The 2-pole shield connection can be used to connect signal-cable shielding to the base modules of analog input and output modules. A special tension-clamp operating tool (BL20-ZBW5-2) is required to mount the shield connection onto the base module. Figure 7-7: Two-pole shield connection for...

  • Page 81: Bl20-Approvals For Zone 2/ Division

    BL20-Approvals for Zone 2/ Division 2 Note The Zone 2 - approval certificates for BL20 can be found in a separate manual for approvals D301255 on www.turck.de. D301087 1211 - BL20 CANopen...
  • Page 82 BL20-Approvals for Zone 2/ Division 2 D301087 1211 - BL20 CANopen...
  • Page 83 D301087 1211 - BL20 CANopen...
  • Page 84 BL20-Approvals for Zone 2/ Division 2 D301087 1211 - BL20 CANopen...
  • Page 85 D301087 1211 - BL20 CANopen...
  • Page 86 BL20-Approvals for Zone 2/ Division 2 D301087 1211 - BL20 CANopen...
  • Page 87 Glossary Acknowledge Acknowledgment of a signal received. Active metal component Conductor or conducting component that is electrically live during operation. Address Identifier of, e.g. a memory position, a system or a module within a network. Addressing Allocation or setting of an address, e. g. for a module in a network. Analog Infinitely variable value, e.
  • Page 88 Glossary Bus line Smallest unit connected to a bus, consisting of a PLC, a coupling element for modules on the bus and a module. Bus system All units which communicate with one another via a bus. Capacitive coupling Electrical capacitive couplings occur between cables with different potentials. Typical sources of interference are, e.
  • Page 89 Electrical components All objects that produce, convert, transmit, distribute or utilize electrical power (e. g. conductors, cable, machines, control devices). Electromagnetic compatibility – the ability of an electrical part to operate in a specific environment without fault and without exerting a negative influence on its environment. German acronym for European Standard.
  • Page 90 Glossary Impedance Total effective resistance that a component or circuit has for an alternating current at a specific frequency. Inactive metal components Conductive components that cannot be touched and are electrically isolated from active metal components by insulation, but can adopt voltage in the event of a fault. Inductive coupling Magnetic inductive couplings occur between two cables through which an electrical current is flowing.
  • Page 91 Polling Establish a Polled I/O Connection, i. e. a conventional Master/Slave relationship between a controller and a DeviceNet device. Potential compensation The alignment of electrical levels of electrical components and external conductive components by means of an electrical connection. Potential free Galvanic isolation of the reference potentials in I/O modules of the control and load circuits.
  • Page 92 Glossary D301087 1211 - BL20 CANopen...
  • Page 93 Index addressing Node-ID ..............4-2 ................. 4-17 Node-ID setting ............4-17 BL20 gateway –function parameter assignment ................ 4-3 ........... 4-2 bus connection PE connection ............7-11 ..............7-5 planning ................6-2 potential relationships ........... 7-4 cable types potential-compensation cable ..............7-3 ........
  • Page 94 Index 10-2 D301087 1211 - BL20 CANopen...
  • Page 95 Hans Turck GmbH & Co. KG 45472 Mülheim an der Ruhr Germany Witzlebenstraße 7 Tel. +49 (0) 208 4952-0 Fax +49 (0) 208 4952-264 E-Mail more@turck.com Internet www.turck.com...

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