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The i-7531 CAN Repeater

1. 9 2 5 Status LED When the I 7531 is turned on the status LED 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 Notes Twinkling rate correlates with baud rate of CAN bus Users may see no twinkling when the twinkling period is too short because of the higher baud rate of CAN bus Besides the yellow LED could look like always on when bus loading is heavy 2 6 Terminator Resistor Setting According to the ISO 11898 specifications the CAN bus network must be terminated by two termination resistor 120Q for proper operation as shown in the below figure 1200 OU Figure6 Terminator resistor Therefore the i 7531 module supplies two switches for users to connect the terminator resistor or not 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 terminal resistor of i 7531 user needs to open the cover of i 7531 first Those locations of JP2 and JP3 are shown as following i 7531 CAN Repeater User Manual ver 1 1 2008 01 10 10 Figure7 JP2 and JP3 positions The following connection statuses present the condition if the terminal resistor is enabled default or disabled Disable Enable Deactivate Activate Figure8 Adjustment of terminator resistor i 7531 CAN Repe
2. 10V9c 30Vbpc Figure2 Block diagram of i 7531 i 7 531 CAN Repeater User Manual ver 1 1 2008 01 10 5 2 2 Appearance CAN Port 2 Status LED of Power amp Communication CAN bus Repeater e Support CAN 2 04 2 08 e Photo Kolation 2500 vir gt Expand the number of CAN buses Mountable on DIN Rail S000V Isolation Lei x CAN Port 1 Power Input Figure Apperance of I 7531 I 7531 CAN Repeater User Manual ver 1 1 2008 01 10 6 2 3 Pin Assignment Figure4 Pin assignment of i 7531 Tablet Pin description of i 7531 Name Description CAN_L CAN Low Cem Line of CAN port 1 CAN_H CAN_ High CAN High Signal Line of CAN port 1 Line of CAN port 1 CA 5 Port 4 CAN Ground Voltage level of ground of CAN Land CAN_H of CAN port 1 No ren 7 Frame Groud or CAN_ Shield of CAN port 1 Power R VS Voltage Source It could be 10Vpc gt 30Vnc Input B GND Power Ground CAN L CAN Low Signal Line of CAN port 2 16 CAN H CAN High Signal Line of CAN port 2 KH mies gh Sig p 18 Port 2 CAN_Ground Voltage level of ground of CAN_L and CAN_H of CAN port 2 Frame Groud or CAN_Shield of CAN port 2 I 7531 4 7531 CAN Repeater User Manual ver 1 1 2008 01 10 7 CS Repeater User Manual ver 1 1 2008 01 10 7 Note1 Note2 In some cases the voltage level of CAN_Ground of different CAN device in the same CAN b
3. The 1 7531 CAN Repeater User s 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 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 1 2008 01 10 1 Tables of Content Tables OFC ON CIN E 2 Me MRO CUCM WEE 3 L RO AWN CS a E A A E T 4 E e EM e de Vu CC 4 E3 AP 0 7 For 11 OM E 4 2 de VE EE 5 2 1 Bio DIAG ant 5 2 2 EE 6 23 EA RER 7 2 4 Wire Connection ge EEN 9 25 Status LED essene EAEE 10 2 6 Terminator resistor settings ccccccceeseeeeeeeeeeeeeeeeeeeeeeeeeeseeneenaes 10 2 7 ed Le E 12 3 Application architecture ses eee 13 4 Dimension and Mounting css eee EEN 14 i 7531 CAN Repeater User Manual ver 1 1 2008 01 10 2 1 Introduction The i 7531 is a CAN repeaters used to establish a physical coupling of two
4. T 7531 A ok s d 17534 WK Repas eg SE S y ALON 29209 d Electronic isolation Extended use Extended CAN bus Extended CAN bus Original CAN bus Electronic isolation Figuren Application architecture i 7531 CAN Repeater User Manual ver 1 1 2008 01 10 13 4 Dimension and Mounting 29 50 04 5X4 35 30 2 SCREW M3 Back View it i Side View j I A ji oi a ah on me TTT oun WA SO ani i Top View Unit mm From View i 7531 CAN Repeater User Manual ver 1 1 2008 01 10 14 Figure10 Dimension and Mounting i 7531 CAN Repeater User Manual ver 1 1 2008 01 10 15
5. ater User Manual ver 1 1 2008 01 10 11 2 1 Cable Selection 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 The wire of CAN L and CAN H start on one end of the total CAN network that a terminator resistor of 120 Ohm is connected between CAN_L and CAN_H The cable is connected from CAN node to CAN node normally without or with short T connections On the other end of the cable again a 1200 Ohm terminator resistor is connected between the CAN lines How to decide a cable type cable length and terminator depends on the baud rate in the CAN bus network please refer to the following table Table2 Cable selection Cable Bus speed Cable type Terminator Bus Length resistance m EEN er ker S leegen 18AWG Ohm deeg ME gamon lege 20AWG S Ohm TEE Wee TE HAREL EH agad 22AWG 20AWG ook beatae EE Egbert Ltb eden 23AWG 22AWG Note4 The AWG means a standard method used to measure wire The numbering system works backwards from what people would think the thicker heavier the wire the lower the number For example a 24AWG wire is thicker heavier than a 26AWG wire I 7531 CAN Repeater User Manual ver 1 1 2008 01 10 12 3 Application Architecture Backbone use Backbone of CAN bus 1 7 1 7 1 7 eine ee gt Br KSE Ka ss ep oe sm Ls a N N NA ee l I age 4 77534 d
6. or more segments of a CAN bus system User can implement tree or star topologies as well as for long drop lines with i 7531 Connecting via i 7531 the division of a CAN system into several subsystems increases the maximum number of bus nodes RS233 CAN converter i 7530 a TA Extend CAN line CAN Network CAN Network I 87120 1 8120 A CAN Interface Slot Module Figure Application of i 7531 The i 7531 is an optically isolated CAN repeater which provides 2500 Vrms of optical isolation allowing you to separate and protect critical segments of the system from the rest of the CAN network And its galvanic isolation isolates both 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 Therefore I 7531 can be used in CANopen DeviceNet and generic ISO 11898 2 standard lf user wants to Know more detail information about the I 7531 please visit our website as follow http www icpdas com products Remote IO can_bus i 7531 htm I 7531 CAN Repeater User Manual ver 1 1 2008 01 10 3 1 1 Features High speed up to 1 Mbps Removable terminal block Mountable on DIN Rail Bus pins protected against transients in an industrial environment No disturbance of the bus lines with an un powe
7. red node Transmit data TxD dominant time out function prevents the output drivers from driving a permanent dominant state A thermal protection circuit is integrated to prevent the transceiver from damage if the junction temperature exceeds thermal shutdown level 1 2 Specifications Support CAN 2 0A CAN 2 0B Fully compatible with the ISO 11898 2 standard Communication baud range 10Kbps 1Mbps Photo coupler isolation between 2 CAN port 2500 Vrms Power consumption 2W max CAN terminal resistors are integrated can be disabled by jumper 3KV galvanic isolated among of power supply and each CAN port Power Supply 10Vpc 30Vpc Operating temperature 250 75 Humidity 5 95 Dimensions 123 mm x 72 mm x 33 mm 1 3 Application Factory Automation Building Automation Home Automation Control system Monitor system Vehicle Automation i 7531 CAN Repeater User Manual ver 1 1 2008 01 10 4 2 Hardware 2 1 Block Diagram Figure 2 is a block diagram illustrating the functions of the i 7531 module It provides the 3000Vrms isolation in the CAN interface site And photo isolation 2500 Vrms between two CAN ports Isolation CAN H 7 p DC DC Physical CAN layer CAN L gt Block Diagram of l 7531 CAN Port 1 CAN H a DC i DE TP DC Physical CAN layer 120 Ohm CAN L E TI 3000V d Isolation f i 2500 Vrms i 3000V Photo Isolation CAN Port 2
8. us system are not equal At this time it could cause some problems to derogate system staibility of this CAN bus system There is one way to fix this problem user can connect the CAN_Ground between those CAN devices to achieve equal voltage level of CAN Ground Wiring of CAN Ground is not necessary user can modify the configuration of wiring according to actual applications lf user usees some kinds of signal cable with shield e g STP then user can use the shield of this cable to connect FG CAN Shield among different devices in the same CAN bus system 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 1 2008 01 10 8 2 4 Wire Connection 7 BEN FG CAN Shield CAN Bus 1 7 zean SEE EA ES CAN GND l s s Ean SS e E EE E i ra A CANH A CAN DEVICE l I ff2 5 2 e E S 3 a j i CAN bus Repeater Support CAN 2 0A 2 0B d A E DE e Mountable on DIN Rail 3000V Isolation a A a a d CAN Bus 2 a CAN_L ot Ground CAN H _ 4 l 10V 30V l l CAN GND i i a Ee r FG CAN Shield i vw oo TT T N S sc 7 Figure5 Wire Connection of I 7531 I 7531 CAN Repeater User Manual ver 1 1 2008 01 10

The i-7531 CAN Repeater

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