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Elgo CMAX2 Series Operating Instructions Manual

Magnetic absolute length and angle measurement for linear and rotary applications
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D-108017 / Rev. 2 / 10.05.2023
Operating Instructions
CMAX2
SERIES
Magnetic absolute length and angle measurement
for linear and rotary applications

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  • Page 1 D-108017 / Rev. 2 / 10.05.2023 Operating Instructions CMAX2 SERIES Magnetic absolute length and angle measurement for linear and rotary applications...
  • Page 2 - 2 -...
  • Page 3 +49 (0) 7731 9339 – 0  +49 (0) 7731 2 13 11  support@elgo.de Document no. D-108017 Document name CMAX2_Betriebsanleitung_EN_19-23 Product code 000000000 Document revisions Rev. 2 Version date 10.05.2023 Copyright © 2023, ELGO Electronic GmbH & Co. KG - 3 -...

  • Page 4: Table Of Contents

    Table of contents 1 Table of contents Table of contents ..................4 General information ................6 Information on the operating instructions ..............6 Terms and abbreviations ..................6 Explanation of symbols ..................7 Warranty provisions ..................... 7 Disassembly and disposal ..................8 Safety ......................
  • Page 5 Table of contents Maintenance ..................37 Cleaning ....................37 Type code ....................38 11.1 Encoder type code .................... 38 11.2 Accessories ...................... 38 11.3 Available versions ..................... 39 Index ..................... 42 - 5 -...

  • Page 6: General Information

    General information 2 General information Information on the operating instructions These operating instructions provide important information on handling the unit. For your own safety and operational reliability, observe all warnings and instructions! Compliance with the specified safety instructions and handling instructions is a basic requirement for safe work- ing.

  • Page 7: Explanation Of Symbols

    General information Explanation of symbols Special instructions are marked with symbols in these operating instructions. The instructions are introduced with signal words, which express the extent of the hazard. Always comply with the instructions and act prudently to prevent accidents, personal injury and property dam- age.

  • Page 8: Disassembly And Disposal

    General information Disassembly and disposal If no return or disposal agreement has been made, disassemble the unit properly in accordance with the safety instructions in this operating manual and dispose of it in an environmentally friendly manner. Before disassembly: Switch off the power supply and make sure it cannot be switched on again, then physically disconnect power supply lines and discharge any stored residual energy.

  • Page 9: Safety

    It is the responsibility of the manufacturer of a system or machine to ensure the correct overall function. The ELGO device is designed exclusively for the purpose described here. The CMAX2 - ELGO - angle and length measuring system is used exclusively to measure angles or distances.
  • Page 10 Safety WARNING Danger due to improper use! Any use of the device beyond the intended use and / or different use can lead to dangerous situations. Therefore: Use the device only as intended  Adhere strictly to all specifications in these operating instructions ...

  • Page 11: Transport And Storage

    Transport and storage 4 Transport and storage Safety instructions for transport, unpacking and loading CAUTION Transport packaging (cardboard box, pallet, etc.) properly, do not throw, bump or tilt. Handling packaging materials Information on proper disposal:  2.5. Transport inspektion Check deliveries immediately on receipt for completeness and transport damage. Where there is externally visible transport damage: Do not accept the delivery or accept with reservations only.

  • Page 12: Product Features

    Product features 5 Product features The CMAX2 is a magnetic absolute sensor system designed for linear measuring lengths up to 192 mm or for rotary applications with a diameter up to 61 mm. The sensor system with integrated evaluation electronics is installed in a compact plastic housing.
  • Page 13 Product features When installed, the measuring system must be calibrated before it is put into operation for the first time. This enables the mechanical tolerances of the components of the measuring system to be adjusted to each other thus avoiding errors during normal operation. For more information on the calibration process, see the section on calibrating the CMAX2 (see 7.5).

  • Page 14: Technical Data

    Technical data 6 Technical data Identification The type plate is used for precise identification of the unit. It is located on the housing of the encoder and pro- vides information about the exact type designation (= type code, see section 11.1). The type plate also contains the manufacturing date (D) , a unique traceable serial number (S), the item number) associated with the type code, installation information, as well as additional information in the QR code).

  • Page 15: Encoder Dimensions

    Technical data Encoder dimensions Dimensions in mm: Figure 4: CMAX2 encoder dimensions Encoder technical data Table 1: Technical data CMAX2 (Standard version) Mechanical data Measurement principle: Absolute Measurement method: Linear, rotary Repeatability: ±1 increment System accuracy at 20 °C: ±20 µm Encoder distance to the magnetic P1.28: 0.4 mm tape:...
  • Page 16 Technical data 1 m standard length, shielded, twisted pair, control cable (others on Encoder cable (optional): request, max. 3 m) Encoder weight: Approx. 2.7 g without cable Electrical data Supply voltage: +5 V ±5% Residual ripple: < 10% Current consumption: Approx.

  • Page 17: Magnetic Tape Technical Data

    Magnetic tape weight: Approx. 62 g/m (including adhesive tape + cover foil) Tape print: ELGO Standard, print color black, character height ≥ 5 mm Extraneous magnetic fields must not exceed 64 mT (640 Oe; 52 kA/m) Extraneous magnetic influence: at the magnetic tape surface as this may damage or destroy the magnet- ic tape encoding.
  • Page 18 Available dimensions: Up to 59.3 mm Imprint: ELGO Standard, print color black, character height ≥ 5 mm Extraneous magnetic fields must not exceed 64 mT (640 Oe; 52 kA/m) Extraneous magnetic influence: at the magnetic tape surface as this may damage or destroy the magnet- ic tape encoding.

  • Page 19: Installation And Commissioning

    In the event of damage caused by non-observance of these operating instructions, the warranty claim becomes invalid. ELGO accepts no liability for consequential damage. We also accept no liability for personal injury, property damage or financial loss. The operator is obliged to take and implement appropriate safety- related measures.

  • Page 20: Assembly/Installation Of The Encoder

    Installation and commissioning Assembly/installation of the encoder The dimensions of the CMAX2 encoder are described in section 6.2. The screw-on sockets are designed for M2.5 screws. The CMAX2 encoder must be assembled within the tolerances given below in relation to the magnetic target (ring or tape).
  • Page 21 Installation and commissioning Table 6: Assembly tolerances Assembly tolerances P1.28: 0.4 mm ±0.1 mm P1.50: 0.5 mm ±0.1 mm 0.5 mm 0.5 mm 1° 1° 1° - 21 -...

  • Page 22: Installation Of The Magnetic Tape

    Installation and commissioning 7.2.2 Alignment options The different alignments are decisive when selecting the encoder variant, as the installation situation depends on them. The position of the encoder in relation to the magnetic tracks is relevant here. The magnetic tracks are firmly defined in their position in relation to the encoder, as shown in Figure 5.

  • Page 23: Set-Up Process

    Installation and commissioning Set-up process ATTENTION Before operating the encoder, application-related settings must be made and a calibration process must be performed. 7.5.1 Equipment The following equipment is required for calibration:  Computer/laptop (Windows) LabView Run-Time Engine (RTE) is required ...
  • Page 24 Installation and commissioning A repeated queries can be suppressed via the check box. Figure 7: chip version selection 7.5.2.3 Establish connection The connection is established via the button ‘Disconnected‘ (red marking). A green background of the button and the labelling ‘Connected” indicates a successfully established connection. Figure 8: Establish the connection 7.5.2.4 Calibration settings Before the calibration steps may be carried out, some general settings must be adjusted, depending on the ap-...
  • Page 25 Installation and commissioning Figure 9: Einstellung FRR/Kalibrierdauer ‘Analogue‘ tab: Signal Conditioning: Before calibrations, the signal conditioning values stored in the CMAX2 may be reset (the values shown are the default values). This is required if the position of the encoder with regard to the magnetic target has been adjusted.
  • Page 26 Installation and commissioning 16 with 16/15 vernier pattern 32 with 32/31 vernier pattern 64 with 64/63 vernier pattern Figure 11: Setting the application-specific parameters ‘ABZ / UVW‘ tab: The desired resolution for the incremental signal may be selected via the ‘Resolution’ parameter: Resolution 4 to 262.144 freely selectable in steps of 4...
  • Page 27 ‘Acquisition Time‘. If you have any questions, please do not hesitate to contact ELGO Support. Note: During the calibration processes, two windows with progress bars appear successively. The rota- tion/movement must not be interrupted during this time.
  • Page 28 Installation and commissioning If the box ‘Adjust Analog’ is checked, analogue calibration will be performed. Otherwise, the ana- logue values will be measured only. If the box ‘Adjust SPO’ is checked, vernier calibration will be performed. Otherwise, the SPO values will be measured only.
  • Page 29 Installation and commissioning Figure 15: Analogue and vernier calibration overview Figure 16: Example result of analogue- and vernier calibration 7.5.4 Saving the calibration To complete the calibration process, the data must be written to the memory. The ‘Write EEPROM’ button (Figure 18) is used to do this.
  • Page 30 Installation and commissioning Figure 17: Saving the data - 30 -...
  • Page 31 Installation and commissioning 7.5.5 Flow chart of the calibration process Start calibration process Position encoder Start software and select chip version General calibration settings Application specific parameter settings Start calibration Adjust encoder position Store calibration Calibration successful? data Figure 18: Calibration procedure - 31 -...

  • Page 32: Connections And Interfaces

    The report function creates a visual image of the software with all settings. A configuration file for the encoder is also created. This data helps the ELGO Support team in case of queries or can be used for your own documen- tation.
  • Page 33 Installation and commissioning 7.6.3 Incremental signal interface In addition, the CMAX2 has the option of outputting incremental position signals. As an option, the differential square-wave signals of A and B phase-shifted by 90° with TTL output level are available. The differential signal Z is output once per revolution.
  • Page 34 Installation and commissioning Table 8: Pin assignment: connecting cable - open cable ends Type of connection Drawing Color Function Description Violet Z’ Z signal - Black Z signal + Blue B’ B signal - Red-blue DATA- Data - Pink-gray DATA+ Data + White Ground...

  • Page 35: Operational Malfunctions

    Operational malfunctions 8 Operational malfunctions The following chapter describes possible causes of malfunctions and the measures to eliminate them. In case of increased interference, please observe the interference suppression measures under section 8.2. In case of malfunctions that cannot be remedied by the following instructions and the interference suppression measures, please contact the manufacturer (see second page).

  • Page 36: Possible Faults And Their Correction

    Operational malfunctions Possible faults and their correction The following table shows possible malfunctions and how to remedy them. Table 10: General notes on troubleshooting Item Problem Possible cause Required action No connection via programming USB driver not present Install USB driver unit Cable defective Replace cable...

  • Page 37: Maintenance

    Maintenance 9 Maintenance This device is maintenance-free. WARNING Danger due to incorrect maintenance. Incorrect maintenance can lead to serious personal injury or property damage. Therefore: Maintenance work may only be carried out by qualified personnel au- thorised and instructed by the operator. 10 Cleaning WARNING The unit may only be cleaned with a damp cloth;...

  • Page 38: Type Code

    Type code 11 Type code 11.1 Encoder type code CMAX2 P1.28 Device name: CMAX2 Version: = Default version Alignment = Alignment 1, 0° to magnetic field orientation = Alignment 2, 90° to magnetic field orientation Pole width: P1.28 = 1.28 mm P1.50 = 1.50 mm Connector:...

  • Page 39: Available Versions

    Type code 11.2.3 Magnetic rings for CMAX2 Table13: CMAX2 magnetic rings Type code Description MRR-BB-CCC-DDD-EE-FFFF Magnetic rings radial standard (Others on request, please contact sales) MRR-00-024-015-08-0064 version MRR-00-028-022-10-0064 outer diameter [mm] MRR-00-050-022-10-0128 inner diameter [mm] MRR-00-050-028-08-0128 width/height [mm] MRR-00-059-022-10-0128 FFFF number of magnetic poles MRA-BB-CCC-DDD-EE-FFFF Magnetic rings axial radial standard (Others on request, please contact sales)
  • Page 40 Notes: - 40 -...
  • Page 41 Notes: - 41 -...

  • Page 42: Index

    Index 12 Index Abbreviations ............ 6 Magnetic tape ..........12 Absolute measurement principle ......13 Available versions ........38 ABZ ..............33 Technical data ..........17 Accessories ............. 38 Maintenance ........... 37 Accident prevention regulations......6 Manufacturing date ......... 14 Assembly ............
  • Page 43 Dokumenten- Nr.: D-108017 / Rev. 2 ELGO El ect roni c GmbH & Co. KG CMAX2_Betriebsanleitung_EN 19- Messen | St euer n | Posi t i oni er en Dokumenten- Name: Carl - Benz - Str. 1, D-78239 Rielasingen Änderungen vorbehalten - © 2023 Tel.:+49 (0) 7731 9339-0, Fax.:+49 (0) 7731 28803...

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