User Manual for ICP DAS models including: I-7531-FD, Two-channel Isolated CAN FD Signal Repeater, I-7531-FD Two-channel Isolated CAN FD Signal Repeater, Isolated CAN FD Signal Repeater, CAN FD Signal Repeater, FD Signal Repeater, Signal Repeater, Repeater
I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) -----7 2.3 Pin Assignment Figure4. Pin Aassignment Table1. Pin Description Pin Name Description
I-7531-FD-G CR | ICPDAS-EUROPE
21 oct. 2021 — I-7531-FD CAN Repeater User Manual (ver. ... change this manual at any time without notice. The ... (ESD) and will get worse when encountering continental.
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DocumentDocumentThe I-7531-FD CAN Repeater User Manual 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. 1.0, 2021/10/21) ------1 Tables of Content Tables of Content ........................................................................................... 2 1 Introduction.............................................................................................3 1.1 Features..........................................................................................4 1.2 Specifications ................................................................................4 2 Technical data ......................................................................................... 5 2.1 Block Diagram................................................................................5 2.2 Appearance ....................................................................................6 2.3 Pin Assignment..............................................................................7 2.4 Wire Connection ............................................................................9 2.5 Status LED......................................................................................9 2.6 Terminator Resistor Setting ........................................................ 10 2.7 Baud rate and wire length of CAN bus.......................................12 3 Dimension ............................................................................................. 14 I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------2 1 Introduction The I-7531-FD is a CAN/CAN FD signal repeater, which can connect two or more CAN networks with the same baud rate. Based on the signal repeat function of I-7531-FD, users can use different numbers of I-7531-FD to combine tree-shaped and star-shaped CAN network topology, and when there are too many devices on the CAN network, using I-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. Figure1. Application I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------3 1.1 Features Supported CAN specification 2.0A/B and CAN FD Fully compatible with the ISO 11898-2 standard Detected CAN bus baud rate automatically, maximum support 8000 kbps 1.2 Specifications CAN Ports Baud Rate Isolation Terminal Resistor Specification Time Delay Power Input Range Consumption Mechanical Casing 2 CAN bus: 5 k ~ 800 kbps CAN FD: Arbitration rate up to 1000 kbps, data rate up to 8000 kbps (Note) The data rates are verified by tests, but user-defined baud rates are possible, so the maximum data rate will depend on the concrete operating conditions (cable length, remote stations, etc.). 2500 Vrms for digital isolation, and 3000 V for DC-DC Build in 120 terminal resistor and support jumper to select ISO-11898-2, CAN 2.0A/B and CAN FD (CAN FD support ISO and Non-ISO standards) Typ. 175ns (corresponds to ~35m CAN bus length) +10 VDC ~ +30 VDC 1 W Plastic I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------4 Mechanical Dimensions (mm) Installation Environmental Operating Temperature Storage Temperature Humidity 72 x 118 x 33 (W x L x H) DIN-Rail -25 ~ +75 °C -30 ~ +80 °C 10 ~ 90% RH, Non-condensing 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 VDC galvanic isolated between each CAN port. Futhermore, there is digital-isolation 2500 Vrms between two CAN ports. DC DC Physical CAN layer CAN Port 1 CAN_H 120 Ohm CAN_L 3000 VDC Isolation 3000 VDC Isolation DC DC +10 VDC ~ +30 VDC 2500 Vrms Digital Isolation CAN Port 2 CAN_H Physical CAN layer 120 Ohm CAN_L Block Diagram of I-7531-FD Figure2. Block Diagram I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------5 2.2 Appearance CAN Port 2 Frame Ground 20 CAN_L CAN_H GND FG 11 Status LED of Power & Communication (CAN) i-7531 RUN PWR CAN bu s Repeater Sup port CAN / CAN FD Dig ital-isolat ion: 2500 Vrms Expand th e n umber of CAN bu ses Moun table on DIN Rail 3000V Isolation (CAN) CAN_L 1 CAN_H GND FG (R)VS+ (B)GND 10 CAN Port 1 Power Input Frame Ground Figure3. Apperance I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------6 2.3 Pin Assignment CAN_L 1 20 CAN_L CAN_H CAN_H (CAN) (CAN) GND GND FG FG (R)VS+ (B)GND10 11 Figure4. Pin Aassignment Table1. Pin Description Pin Name Description 1 CAN_L CAN_Low. Signal Line of CAN port 1. 3 CAN_H CAN_High. Signal Line of CAN port 1. 5 GND CAN_Ground (or CAN_GND), voltage level of ground of CAN_L and CAN_H in CAN port 1. 7 FG Frame Groud. 9 (R)VS+ Power input +10VDC ~ +30VDC. 10 (B)GND 14 FG Frame Groud. 16 GND CAN_Ground (or CAN_GND), Voltage level of ground of CAN_L and CAN_H in CAN port 2. 18 CAN_H CAN_High. Signal Line of CAN port 2. 20 CAN_L CAN_Low. Signal Line of CAN port 2. I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------7 Note 1: In normal situation, the CAN_GND does not need to be wired, but the CAN_GND's voltage level of different CAN devices are not equal in some case. When in this situation, it maybe cause some problems and reduce the stability of the CAN bus system. The user can connect CAN_GND of these CAN devices to let the voltage level be same and eliminate this situation. Note 2: Electronic circuits are susceptible to electrostatic discharge (ESD) and will get worse when encountering continental climates, so F.G. provides a path for ESD to lead to the earth ground, thereby enhancing the module's ability to protect against static electricity. 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. 1.0, 2021/10/21) ------8 2.4 Wire Connection CAN DEVICE 5 9 CAN_GND CAN_H CAN_L 1 6 9-Pin D-sub Male connector Frame Ground CAN_L CAN_H CAN_GND Power GND +10VDC ~ +30VDC Frame Ground Figure5. Wire Connection 2.5 Status LED LED 1 (PWR) Color Red Status ON OFF Description Power on Power off 2 1 2 (RUN) Green Blink OFF In communication No data in communication Note: RUN LED's twinkling rate correlates with baud rate of CAN bus. 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. 1.0, 2021/10/21) ------9 2.6 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 60. There are some examples below. Figure6. Terminator Resistor I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------10 On the other hand, the I-7531-FD module has built-in two 120 terminating resistors, and the user can use the jumper to select whether to enable it. Among them, JP1 is used to adjust the terminal resistance of CAN port 1, and JP2 is used to adjust the terminal resistance of 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: JP1 JP2 CAN1 CAN2 Figure7. JP1 and JP2 positions The following connection statuses present the condition if the terminal resistor is enabled (default) or disabled. Disable (Deactivate) Enable (Activate) Figure8. Adjustment of Terminator Resistor I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------11 2.7 Baud rate and wire length of CAN bus The CAN bus is a balanced (differential) 2-wire interface running over either a Shielded Twisted Pair (STP), Un-shielded Twisted Pair (UTP), or Ribbon cable. However, the baud rate of communication is inversely proportional to the wire length. When the baud rate is lower, the ideal CAN bus wire length that can be used is longer, as shown in the following table. (Note: The ideal CAN bus wire length means the sum of the wire lengths of each CAN bus in a single CAN network.) Table2. Baud rate and ideal CAN bus wire lehgth Baud rate Ideal CAN bus wire length [bit/sec] [meters] 800K 50 500K 100 250K 250 125K 500 50K 1000 20K 2500 10K 5000 In addition, the I-7531-FD can isolate and re-amplify the CAN bus signal, so the user will think that connecting multiple I-7531-FDs in series on the same CAN bus, the CAN bus signal will always re-amplify and then extend the wire length of CAN bus, but the CAN bus signal passing through the I7531-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. For example, the baud rate used by the user is 500Kbps, and the ideal CAN bus wire length is 100 meters, when one I-7531-FD is connected in series to the CAN bus, the ideal CAN bus wire length will be reduced by 35 meters that is reduced from 100 meters to 65 meters (100 35 x 1 = 65). By analogy, if two I-7531-FDs are connected in series on the CAN bus, it will reduced by 35 x 2 = 70 meters as shown in the below figure. I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------12 Ideal CAN bus wire length Add one I-7531-FD Add two I-7531-FD Isolate, Re-Amplity CAN bus signal Reduce 35m Reduce 35 x 2 = 70m Figure9. Differences after adding I-7531-FD 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 [bit/sec] by a single CAN bus 800K 1 500K 2 250K 7 125K 14 50K 28 20K 71 10K 142 I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------13 3 Dimension Figure10. Dimension I-7531-FD CAN Repeater User Manual (ver. 1.0, 2021/10/21) ------14Microsoft Word 2013 Microsoft Word 2013