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ICP DAS USA I-7531-FD User Manual

Can repeater
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The I-7531-FD / I-7531-FD-UTA 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 2021 by ICP DAS. All rights are reserved.
Trademark
The names used for identification only may be
registered trademarks of their respective companies.
I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------1
User Manual

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Summary of Contents for ICP DAS USA I-7531-FD

  • Page 1 Copyright Copyright 2021 by ICP DAS. All rights are reserved. Trademark The names used for identification only may be registered trademarks of their respective companies. I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------1...

  • Page 2: Table Of Contents

    Appearance ..................7 Pin Assignment ................8 Wire Connection ................10 Status LED ..................10 Terminator Resistor Setting ............11 Baud rate and wire length of CAN bus ........13 Dimension ..................... 15 I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------2...

  • Page 3: Introduction

    7531-FD can increase the driving force of the CAN signal to drive more CAN devices. In addition, the CAN side of the I-7531-FD has a digital isolation of 2500 Vrms, and the CAN side and the power side also provide 3000 V DC-DC isolation protection, which can effectively isolate the noise interference between CAN networks ,and achieve protection the purpose of a specific CAN network.

  • Page 4: Features

    ISO-11898-2, CAN 2.0A/B and CAN FD Specification (CAN FD support ISO and Non-ISO standards) Time Delay Typ. 175ns (corresponds to ~35m CAN bus length) Power Input Range +10 VDC ~ +30 VDC I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------4...
  • Page 5 72 x 118 x 33 (W x L x H) Installation DIN-Rail Environmental Operating Temperature -25°C ~ +75°C -40°C ~ +75°C Storage Temperature -30°C ~ +80°C -40°C ~ +80°C Humidity 10 ~ 90% RH, Non-condensing I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------5...

  • Page 6: Technical Data

    2 Technical data 2.1 Block Diagram Figure 2 is a block diagram illustrating the functions of the I-7531-FD module. Power supply are with 3000 V galvanic isolated between each CAN port. Futhermore, there is digital-isolation 2500 Vrms between two CAN ports.

  • Page 7: Appearance

    ‧Dig ital-isolat ion: 2500 Vrms ‧Expand th e n umber of CAN bu ses ‧Moun table on DIN Rail 3000V Isolation (CAN) Power Input CAN Port 1 Frame Ground Figure3. Apperance I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------7...

  • Page 8: Pin Assignment

    CAN_Ground (or CAN_GND), Voltage level of ground of CAN_L and CAN_H in CAN port 2. CAN_H CAN_High. Signal Line of CAN port 2. CAN_L CAN_Low. Signal Line of CAN port 2. I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------8...
  • Page 9 If the user wants to use F.G., both pin 7 and pin 14 need to be connected to the earth ground, because the two pins are not connected inside the module. I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------9...

  • Page 10: Wire Connection

    User may see no twinkling when the twinkling period is too short because of the higher baud rate of CAN bus. Besides, the LED could look like always on when bus loading is heavy. I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------10...

  • Page 11: Terminator Resistor Setting

    According to the ISO 11898-2 specifications, the bus line of CAN_H and CAN_L must be terminated by resistor for proper operation. The equivalent resistance between CAN_H and CAN_L should be 60Ω. There are some examples below. Figure6. Terminator Resistor I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------11...
  • Page 12 CAN port 2. If the user wants to adjust the terminal resistance, who needs to open the casing of I-7531-FD, and will see the positions of JP1 and JP2 as shown in the figure below: Figure7.

  • Page 13: Baud Rate And Wire Length Of Can Bus

    7531-FD will reduce the ideal CAN wire length due to the time delay at the physical layer in fact. In other words, when the user add one I-7531-FD to the CAN bus, the CAN signal passing through the I-7531-FD will be delayed by 175ns, and the ideal CAN bus wire length will be reduced by 35 meters.
  • Page 14 Therefore, the baud rate and the maximum number of I-7531-FD supported by a single CAN bus are shown in the following table. Table3. The number of I-7531-FD supported by a single CAN bus Baud rate The number of I-7531-FD supported...

  • Page 15: Dimension

    3 Dimension Figure10. Dimension I-7531-FD CAN Repeater User Manual (ver. 1.1, 2022/04/26) ------15...

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