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The i-7531 CAN Repeater
Warranty
All products manufactured by ICP DAS are under
warranty regarding defective materials for a period of one
year from the date of delivery to the original purchaser.
Warning
ICP DAS assumes no liability for damages resulting
from the use of this product. ICP DAS reserves the right to
change this manual at any time without notice. The
information furnished by ICP DAS is believed to be
accurate and reliable. However, no responsibility is
assumed by ICP DAS for its use, or for any infringements
of patents or other rights of third parties resulting from its
use.
Copyright
Copyright 1997 by ICP DAS. All rights are reserved.
Trademark
The names used for identification only may be
registered trademarks of their respective companies.
i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------1
User's Manual

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Summary of Contents for ICP DAS USA i-7531

  • Page 1 Copyright Copyright 1997 by ICP DAS. All rights are reserved. Trademark The names used for identification only may be registered trademarks of their respective companies. i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------1...
  • Page 2: Table Of Contents

    Technical data ..................5 Block Diagram................5 Appearance ..................6 Pin Assignment................7 Wire Connection ................9 Status LED..................10 Terminator Resistor Setting............10 Cable Selection ................12 Driving Capability and Baud ............13 Application Architecture ..............15 Dimension and Mounting ..............16 i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------2...
  • Page 3: Introduction

    CAN segments from each other as well as from the power supply The CAN connection of i-7531 is by terminal blocks. A power supply of 10 ~ 30 DC voltage is required. The i-7531 is housed in a rugged DIN-Rail mountable box, making it easy to install in an industrial cabinet.
  • Page 4: Features

    Operating temperature: -25° C ~ +75° C Humidity: 5% ~ 95% Dimensions: 123 mm x 72 mm x 33 mm 1.3 Application Factory Automation Building Automation Home Automation Vehicle Automation Control system Monitor system … i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------4...
  • Page 5: Technical Data

    2 Technical data 2.1 Block Diagram Figure 2 is a block diagram illustrating the functions of the i-7531 module. Power supply are with 3000V galvanic isolated between each CAN port. Futhermore, there is photo-isolation 2500 Vrms between two CAN ports.
  • Page 6: Appearance

    CAN bus Repeater ‧Support CAN 2.0A/2.0B ‧Photo-isolation: 2500 Vrms ‧Expand the number of CAN buses ‧Mountable on DIN Rail 3000V Isolation (CAN) Power Input CAN Port 1 Figure3. Apperance of i-7531 i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------6...
  • Page 7: Pin Assignment

    CAN_H CAN_High. Signal Line of CAN port 2. CAN_Ground (or CAN_GND), Voltage level of Port 2 ground of CAN_L and CAN_H of CAN port 2. Frame Groud (or CAN_Shield) of CAN port 2. i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------7...
  • Page 8 FG (CAN_Shield) is used to shield the signal cable, to avoid RF radiation or other interference. Wiring of FG is not necessary; user can modify the configuration of wiring according to actual applications. i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------8...
  • Page 9: Wire Connection

    2.4 Wire Connection FG (CAN_Shield) CAN Bus 2 CAN_GND CAN_H CAN DEVICE CAN_L Power CAN Bus 1 CAN_L Power GND CAN_H +10V ~ +30V CAN_GND FG (CAN_Shield) Figure5. Wire Connection of i-7531 i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------9...
  • Page 10: Status Led

    2.5 Status LED When user turn the i-7531, the status LED of i-7531 will be display with red light. Moreover, when a message passes through i-7531, the status LED will be twinkle once with yellow light while the red light is still on.
  • Page 11 The JP2 of i-7531 is used for adjusting terminal resistor on CAN Port 1, and the JP3 of i-7531 is used for adjusting terminal resistor on CAN Port 2. Before adjusting JP2 or JP3 of i-7531, user needs to open the cover of i-7531 first.
  • Page 12: Cable Selection

    < 90 ~0.5 (AWG20) < 50 ~0.8 (AWG18) < 33 ~1.3 (AWG16) < 20 The recommended AC parameters of CAN bus line are 120 impedance and 5 ns/m specific line delay. i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------12...
  • Page 13: Driving Capability And Baud

    For example, if users use baud 500K and one i-7531, the ideal total bus length will be “100 – 40 * 1 = 60 meters“. Specially, in baud 1M bps, add one i-7531 will cause the ideal total bus length to be less than 4 meters.
  • Page 14 Segment 3 = L1 seg1 = L2a + L2b i-7531 seg2 Segment 4 = L3 seg3 = L4 seg4 total seg1 seg2 seg3 seg4 Figure9. Definition of seg1 total i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------14...
  • Page 15: Application Architecture

    Backbone of CAN bus i-7531 i-7531 i-7531 CAN branch CAN branch CAN branch Electronic isolation Extended use i-7531 i-7531 Original Extended Extended CAN bus CAN bus CAN bus Electronic isolation Figure10. Application Architecture i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------15...
  • Page 16: Dimension And Mounting

    4 Dimension and Mounting Figure11. Dimension i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------16...
  • Page 17 Figure12. Mounting i-7531 CAN Repeater User Manual (ver. 1.2, 2008/02/13) ------17...

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