Beckhoff CU1521 Series Manual
Beckhoff CU1521 Series Manual

Beckhoff CU1521 Series Manual

Ethercat media converter (rj45, lwl, pof)

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Documentation | EN
CU1521-xxxx, CU1561
EtherCAT Media Converter (RJ45, LWL, POF)
2023-05-25 | Version: 2.5

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Summary of Contents for Beckhoff CU1521 Series

  • Page 1 Documentation | EN CU1521-xxxx, CU1561 EtherCAT Media Converter (RJ45, LWL, POF) 2023-05-25 | Version: 2.5...
  • Page 3: Table Of Contents

    1.6.1 General notes on marking.................... 10 1.6.2 Version identification of CU Switches ................ 11 1.6.3 Beckhoff Identification Code (BIC) ...................  12 1.6.4 Electronic access to the BIC (eBIC).................  14 2 Product overview ............................  16 Introduction .............................  16 Technical data .......................... 18 3 Basic principles............................
  • Page 4 Table of contents Version: 2.5 CU1521-xxxx, CU1561...
  • Page 5: Foreword

    Foreword Foreword CU15x1 - Product overview CU1521 [} 16] - EtherCAT media converter multimode fiber optic CU1521-0010 [} 16] - EtherCAT media converter singlemode fiber optic CU1561 [} 16] - EtherCAT media converter fiber optic (POF) CU1521-xxxx, CU1561 Version: 2.5...
  • Page 6: Notes On The Documentation

    , XTS and XPlanar are registered trademarks of and licensed by Beckhoff Automation GmbH. Other designations used in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owners. Patent Pending...
  • Page 7: Guide Through Documentation

    Further components of documentation This documentation describes device-specific content. It is part of the modular documentation concept for Beckhoff I/O components. For the use and safe operation of the device / devices described in this documentation, additional cross-product descriptions are required, which can be found in the following table.
  • Page 8: Safety Instructions

    All the components are supplied in particular hardware and software configurations appropriate for the application. Modifications to hardware or software configurations other than those described in the documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG. Personnel qualification This description is only intended for trained specialists in control, automation and drive engineering who are familiar with the applicable national standards.
  • Page 9: Documentation Issue Status

    Foreword Documentation issue status Version Modifications • Update chapter “Commissioning” • Update structure • Update chapter “Notes on converters with RJ45 fiber-optic connection” • Update structure • Update chapter “Commissioning” • Update Technical Data • Update structure • Update Technical Data •...
  • Page 10: Version Identification Of Ethercat Devices

    Associated and synonymous with each revision there is usually a description (ESI, EtherCAT Slave Information) in the form of an XML file, which is available for download from the Beckhoff web site. From 2014/01 the revision is shown on the outside of the IP20 terminals, see Fig. “EL5021 EL terminal, standard IP20 IO device with batch number and revision ID (since 2014/01)”.
  • Page 11: Version Identification Of Cu Switches

    Version identification of CU Switches The serial number/ data code for Beckhoff IO devices is usually the 8-digit number printed on the device or on a sticker. The serial number indicates the configuration in delivery state and therefore refers to a whole production batch, without distinguishing the individual modules of a batch.
  • Page 12: Beckhoff Identification Code (Bic)

    1.6.3 Beckhoff Identification Code (BIC) The Beckhoff Identification Code (BIC) is increasingly being applied to Beckhoff products to uniquely identify the product. The BIC is represented as a Data Matrix Code (DMC, code scheme ECC200), the content is based on the ANSI standard MH10.8.2-2016.
  • Page 13 Fig. 3: Example DMC 1P072222SBTNk4p562d71KEL1809 Q1 51S678294 An important component of the BIC is the Beckhoff Traceability Number (BTN, position 2). The BTN is a unique serial number consisting of eight characters that will replace all other serial number systems at Beckhoff in the long term (e.g.
  • Page 14: Electronic Access To The Bic (Ebic)

    Electronic access to the BIC (eBIC) Electronic BIC (eBIC) The Beckhoff Identification Code (BIC) is applied to the outside of Beckhoff products in a visible place. If possible, it should also be electronically readable. Decisive for the electronic readout is the interface via which the product can be electronically addressed.
  • Page 15 Foreword ◦ The device must be in PREOP/SAFEOP/OP for access: ◦ the object 0x10E2 will be introduced into stock products in the course of a necessary firmware revision. ◦ From TwinCAT 3.1. build 4024.24 the functions FB_EcCoEReadBIC and FB_EcCoEReadBTN for reading into the PLC and further eBIC auxiliary functions are available in the Tc2_EtherCAT Library from v3.3.19.0.
  • Page 16: Product Overview

    Product overview Product overview Introduction Fig. 4: CU1561, CU1521 The EtherCAT-capable CU1521, CU1521-0010 and CU1561 devices should be used as media converter for industrial fast Ethernet/100 Mbaud from optical fiber to copper and vice versa. Fig. 5: Upper picture: one media converter, copper -> fiber optic, Lower picture: two media converters, copper ->...
  • Page 17 Product overview The CU15x1 are useful in applications where EtherCAT transfers over large distances are required or where higher EMC loads on the bus line are to be expected. Quick links • EtherCAT basics • Application notes [} 26] • Diagnostic LEDs [} 24] CU1521-xxxx, CU1561 Version: 2.5...
  • Page 18: Technical Data

    Product overview Technical data Technical data CU1521 CU1521-0010 CU1561 Function Ethernet "IP" Media converter Fast Ethernet/100Mbaud (all IEEE 802.3-based protocols) IEEE 802.3u auto negotiation, half or full duplex, automatic settings Link Loss-Forwarding (notification direction configurable) Store and Forward Mode (FIFO) unmanaged Function EtherCAT "EC"...
  • Page 19: Basic Principles

    - RJ45 connector, field assembly ZS1090-0005 - EtherCAT cable, field assembly ZB9010, ZB9020 Suitable cables for the connection of EtherCAT devices can be found on the Beckhoff website! E-Bus supply A bus coupler can supply the EL terminals added to it with the E-bus system voltage of 5 V; a coupler is thereby loadable up to 2 A as a rule (see details in respective device documentation).
  • Page 20: Ethercat State Machine

    Basic principles Fig. 6: System manager current calculation NOTICE Malfunction possible! The same ground potential must be used for the E-Bus supply of all EtherCAT terminals in a terminal block! EtherCAT State Machine The state of the EtherCAT slave is controlled via the EtherCAT State Machine (ESM). Depending upon the state, different functions are accessible or executable in the EtherCAT slave.
  • Page 21: Coe - Interface: Notes

    In the Boot state mailbox communication via the file access over EtherCAT (FoE) protocol is possible, but no other mailbox communication and no process data communication. CoE - Interface: notes This device has no CoE. Detailed information on the CoE interface can be found in the EtherCAT system documentation on the Beckhoff website. CU1521-xxxx, CU1561 Version: 2.5...
  • Page 22: Mounting And Wiring

    Mounting and wiring Mounting and wiring Dimensions Space requirement in the control cabinet • The RJ45 connector increase the depth depending on their design and the Ethernet cable used. • Above the mounting rail an additional height of approx. 10 mm is required to enable latching [} 23] of the switch onto the rail.
  • Page 23: Mounting And Demounting

    Mounting and wiring Mounting and demounting The CU15xx converters are mounted on the mounting surface with the aid of a 35 mm DIN rail  (according to EN 60715). Mounting rail installation Please ensure that the CU15x1 engages properly on the mounting rail. Mounting •...
  • Page 24: Diagnostic Leds

    Mounting and wiring Diagnostic LEDs Fig. 12: Pin assignment CU1521, CU1521-0010, CU1561 LEDs for fieldbus diagnostics/power supply Color Display State Description L/A (X1) green no connection on the EtherCAT strand green (x2) linked EtherCAT device connected flashing active Communication with EtherCAT device Power green No supply voltage...
  • Page 25: Ul Notice

    Beckhoff EtherCAT modules are intended for use with Beckhoff’s UL Listed EtherCAT System only. CAUTION Examination For cULus examination, the Beckhoff I/O System has only been investigated for risk of fire and electrical shock (in accordance with UL508 and CSA C22.2 No. 142). CAUTION For devices with Ethernet connectors Not for connection to telecommunication circuits.
  • Page 26: Commissioning/Application Notes

    Commissioning/application notes Commissioning/application notes Application notes Table of contents • Standard Ethernet [} 26] • EtherCAT [} 27] • Earthing/Shielding [} 28] • Firmware update [} 28] • General notes [} 28] The media converters CU1521, CU1521-0010, CU1561 (referred to as CU15x1 below) physically convert 100 Mbit telegrams (Fast Ethernet) from copper physics (RJ45 connector) to optical fiber (SC connector or versatile link) and back.
  • Page 27 Commissioning/application notes Fig. 15: Interposed media converter in the Ethernet connection In both IP settings the CU15x1 operates as a store and forward network device with checksum function. Frames that are faulty (CRC error), too short (< 64 bytes) or too long (> 1522 bytes) are not passed on. Used for: EtherCAT 100 Mbit Other characteristics are required if it is used as a media converter in an EtherCAT network: •...
  • Page 28 Commissioning/application notes If the opposite direction of rotation is set, the subsequent behavior depends on the EtherCAT master. The scanned CU15x1 may be inserted at a different position in the topology, or an INIT_VPRS error message of the EtherCAT master may occur. Frame size in Ethernet mode In Ethernet mode only a frame size from 64 to 1522 bytes is supported.
  • Page 29 Commissioning/application notes Fig. 20: Slanting installation of the optical fiber socket CU1521-xxxx, CU1561 Version: 2.5...
  • Page 30: Notes On Converters With Rj45 Fiber-Optic Connection

    Commissioning/application notes Notes on converters with RJ45 fiber-optic connection Fig. 21: CU1521 Mounting rail installation Mounting Please ensure that the CU15x1 engages properly on the mounting rail. See chapter Mounting rail installation [} 23]. Version: 2.5 CU1521-xxxx, CU1561...
  • Page 31: Principles Of Fiber-Optic Technology

    Commissioning/application notes 5.2.1 Principles of fiber-optic technology When using fiber-optic cables for the transmission of data, there are various factors that influence the signal transmission and have to be observed in order to guarantee reliable transmission. Important principles of fiber-optic technology are described below. Attenuation Less light reaches the end of a connection with fiber-optic cables than is input at the start of the connection.
  • Page 32 Commissioning/application notes Further influences on the signal transmission In addition to the main influences (attenuation and dispersion) that limit the transmission link, care must be taken when installing and maintaining fiber-optic transmission links. Sharp kinks and micro-bends in the fiber-optic lead to additional reflections in the fiber, as a result of which the influences of the attenuation and dispersion are increased.
  • Page 33 In the next step, the attenuation budget, i.e. the attenuation over the entire transmission link, must be calculated. A multimode fiber in the strength 50/125 µm from Beckhoff (ZK1091-1001-xxxx) is used for this example. A maximum attenuation of 0.8 dB/km at a wavelength of 1300 nm is specified in the data sheet for the fiber-optic cable.
  • Page 34 Commissioning/application notes Attenuation budget Parameter Number Value Fiber loss attenuation (0.8 dB/km) 2.1 km 1.68 dB Connector insertion attenuation 0.5 dB (0.25 dB) Splice insertion attenuation (0.3 dB) 0.9 dB Attenuation budget 3.08 dB If the attenuation budget is now subtracted from the power budget, a power buffer of 4.42 dB results. This is greater than 3 dB and is therefore sufficient as a buffer for most applications, so that an additional splice or slight soiling of the fiber would not lead to failure of the data transmission.
  • Page 35 Commissioning/application notes Evaluation of a fiber-optic transmission link by means of measurement A fiber-optic transmission link can be described and evaluated with parameters from data sheets. In order to obtain a real result for the attenuation over the entire link, however, the link must be measured using an optical power meter (OPM).
  • Page 36: Notes On Suitable Optical Fiber Cables

    Commissioning/application notes 5.2.2 Notes on suitable optical fiber cables General information on optical fiber types Optical fiber are available as multimode and single mode types with different step and graded indices. Step and graded index Optical fiber cables consist of 2 concentric materials, the core and cladding, plus a protective (colored) jacket.
  • Page 37: Application With Cu1521 And Cu1521-0010

    Commissioning/application notes 5.2.3 Application with CU1521 and CU1521-0010 Application with CU1521 and CU1521-0010 The CU1521, CU1521-0010 are intended for application with optical fiber cables with the following characteristics: • SC duplex connector. • CU1521: Duplex multimode 50/125 µm or 62.5/125 µm (inner/outer core diameter). The use of both diameters is possible.
  • Page 38: Connecting And Disconnecting The Fiber Cable

    Commissioning/application notes 5.2.4 Connecting and disconnecting the fiber cable Connecting and disconnecting the optical fiber cable NOTICE Risk of damage to the cable! To disconnect the optical fiber cable always pull the connector to release the locking mechanism - never pull the optical fiber cable itself.
  • Page 39 Commissioning/application notes Fig. 25: Blind plugs in unused sockets CU1521-xxxx, CU1561 Version: 2.5...
  • Page 40: Notes On Converters With Rj45 Pof Connection

    For the connection of the CU1561 it is recommended to use the connector set ZS1090-0008 [} 43] (Versatile Link Duplex plugs) in conjunction with a duplex polymer fiber with an outside diameter of 2 x 2.2 mm (Z1190), which are available from Beckhoff. Installation notes Among other things, the following items should be observed when laying POF cables: •...
  • Page 41: Connecting And Disconnecting The Pof Cable

    Commissioning/application notes 5.3.2 Connecting and disconnecting the POF cable To connect the cable, insert the plug (available as an accessory in the connector set ZS1090-0008) into the connection opening until it audibly latches. Fig. 26: Latching lug with release catch on the POF duplex plug To release the connector activate the release device with the latching lug.
  • Page 42 Commissioning/application notes Fig. 28: Blind plugs in unused sockets Version: 2.5 CU1521-xxxx, CU1561...
  • Page 43: Notes Regarding Assembly Of Pof Cables With The Connector Set Zs1090-0008

    3. Grinding and polishing [} 45] 4. Fine polishing [} 46] Fig. 29: Duplex connector set ZS1090-0008 The duplex connector set ZS1090-0008 from Beckhoff consists of 10 duplex Versatile Link connectors and several sheets of abrasive paper and polishing paper. Step-by-step instructions for assembling the POF cable The following step-by-step guide describes the correct assembly of a POF cable with a Versatile Link duplex connector.
  • Page 44 Commissioning/application notes Fig. 30: POF cable stripped over the same length 2. Attaching the connector Push the two cable ends into the connector and the connector back until it stops. The fibers should now protrude no more than 1.5 mm out of the front openings (Fig. Cable inserted in the connector). Close the connector by folding the upper and lower halves together until they engage (Fig.
  • Page 45 Commissioning/application notes When inserting the wires into the connector ensure the optical channels are crossed (Tx1 --> Rx2; Tx2 --> Rx1). The 'nose' at the connector hinge can be used as a guide (Fig. Correctly connected optical channels). Fig. 33: Correctly connected optical channels 3.
  • Page 46 Commissioning/application notes Fig. 35: Polishing in the form of a figure of "8" 4. Fine polishing Now use the pink polishing sheet for fine polishing in the same manner. Apply the connector with the sanding gauge to the matt side of the polishing sheet with slight pressure and polish in the form of a figure of 8 up to 25 times.
  • Page 47: Appendix

    Appendix Appendix Safety instructions and behavioral rules for Class 1 laser CAUTION Class 1 laser product – danger of accident due to glare! The following laser-specific behavioral rules are to be followed for the Class 1 laser products described in this document: •...
  • Page 48: Firmware Compatibility

    Appendix Firmware compatibility The CU1521-00x0 and CU1561-0000 converters have no firmware. Version: 2.5 CU1521-xxxx, CU1561...
  • Page 49: Support And Service

    Please contact your Beckhoff branch office or representative for local support and service on Beckhoff products! The addresses of Beckhoff's branch offices and representatives round the world can be found on her internet pages: www.beckhoff.com You will also find further documentation for Beckhoff components there.
  • Page 51 More Information: www.beckhoff.com/cuxxxx Beckhoff Automation GmbH & Co. KG Hülshorstweg 20 33415 Verl Germany Phone: +49 5246 9630 info@beckhoff.com www.beckhoff.com...

This manual is also suitable for:

Cu1561Cu1521-0010

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