CAN - CAI812
Contents
1. Fig 3 1 2 Position of the solder bridges on the bottom layer CAN CAI812 Hardware Rev 5 1 Jumper Assignment li i The respective def2. Fig 2 2 3 Integration of the module into an EMY OFF chain The earth terminal P5 type KDS4 is connected to the plain connector P6 which is inside the case see component diagram of the PCB The earth cable of the case top is also connected to P6 therefore making it possible to connect the case top of the module to the protection earth PE via the screwed connector P5 The bottom of the module however is not connected to P5 or P6 It is earthed by screwing the protective conductor to a mounting hole via a cable terminal and toothed disks Wires with a cross section of up to 4 mm can be connected to the screwed connector P5 2 2 2 CAN Connections P2 P3 The CAN is connected via connector P2 male or and P3 female In their assignment both 9 pin DSUB connectors correspond to the recommendations of the CiA Group CAN in Automation 11 1992 Detailed descriptions about these connectors can be taken from the appendix The CAN cable has to be terminated at both ends For this two 9 pin DSUB connectors with terminal resistors are available 16 CAN CAI812 Hardware Rev 5 1 Installation wa Via P4 the analog inputs are connected Three terminals have been designed for each of the 8 differential inputs Ix Ix and GND 2 2 3
3. 1 reserved 2 CANL 3 CAN GND 4 reserved 5 reserved 1 2 3 4 5 e e e e J e G 6 7 8 9 CAN GND 6 CAN H 7 reserved 8 reserved 9 Signal description CAN L CAN H CAN signal lines CAN GND reference potential of the local CAN physical laver reserved reserved for future applications 44 CAN CAI812 Hardware Rev 5 1 Connector Assignment 6 1 4 CAN Connector P3 9 pin DSUB female reserved 1 CAN L 2 CAN GND 3 reserved 4 reserved 5 o em er oe xe oo 9 6 CAN GND 7 CAN H 8 reserved 9 reserved Signal description CAN L CAN H CAN signal lines CAN GND reference potential of the local physical layer reserved reserved for future applications CAN CAI812 Hardware Rev 5 1 45 Connector Assignment 6 1 5 Add On Male Connector X8 optional The connector X8 is optionally mounted It is next to the DSUB connector inside the case X8 has been designed for the use of optional add ons other physical layers Signal Pin Signal reserved CAN_L CAN_H reserved 10 pin wrap plug Signal description CAN_L CAN_H CAN signal lines CAN GND reference potential of the local CAN physical layer 3 V local voltage supply of the CAN interface reserved reserved for future applications 46 CAN CAI812 Hardware Rev 5 1 Connector Assignment 6 1 6 A
4. Table 3 2 6 Function of jumpers J401 J504 as el Jumper for bridging the CAI812 potential divider AADNFWN HE Table 3 2 7 Bridging the input potential divider assignment of channels to jumpers 28 CAN CAI812 Hardware Rev 5 1 CAN Identifiers 4 CAN Identifiers In operation with the default parameters the CAN Tx identifiers on the module consist of the following ias as ias ias setting via jumper J3 setting via coding switch HIGH setting via coding switch LOW SW1 SW0 id11 id9 are set by means of jumper J3 1 2 3 4 5 6 id8 id2 are set via the coding switches SWO and SWI of the module idl via id the channel group of the CAI812 is selected lto4 0 TxId1 ae ee ae A detailed description of the assignment of the jumper and the coding switches can be taken from the chapter Configuration Jumpers The local software of the module offers the possibility to program the Tx identifiers freely Further information on this can be taken from the software manual of the esd CAN protocol CAN CAI812 Hardware Rev 5 1 29 30 CAN CAI812 Hardware Rev 5 1 CAN Interface 5 Description of the Assemblies 5 1 CAN Interface 5 1 1 Bitrate The transmission speed can be varied from 10 kbit s to 1 0 Mbit s The bitrate is selected via J3 The local software of the module offers the possibilitv to reprogram the bitrate This programmed bitrate then substitutes the bitrate set
5. CAN connectors PI 24VIES Q HIG hi P3 P2 OD Status Low DSUB9 female DSUB9 male GND ES ES 124V message output CSD CAN BUS Module ld CAI812 8 analog inputs 17 O O O O O O O O O OOO OOO Y s2 P4 1O O O O O OOOO OO OOOO Ohe P1 connecting of 24V power supply emergency stop input and message outputs inscription fields CAN CAI812 Hardware Rev 5 1 P5 PE terminal connected to metallic case P4 VO connector Overview CAN CAI812 Hardware Rev 5 1 Overview 1 1 3 General Technical Data Temperature area permissible ambient temperature 0 50 C Humidity max 90 not condensing Operating voltage Connectors Case nominal voltage 24 V 10 current input typical at 20 C 300 mA electronic reverse battery protection safety fuse 400 mA T P1 MSTB 2 5 supply voltage EMY OFF input message output P2 DSUB9 male CAN connection P3 DSUB9 female CAN connection P4 screw clip connector MSTB 2 5 analog inputs P5 KDS 4 designed for earthing the case top Dimensions 136 x 66 x 245 mm installable on rails NS35 7 5 DIN EN 50022 space between rails 150 mm Weight ca 700 g Table 1 1 1 General data of the CAI812 CAN CAI812 Hardware Rev 5 1 7 Overview 1 1 4 CAN an
6. Fig 2 2 1 Position of externally reachable connectors of the CAN module 2 2 1 Supply Voltage EMY OFF Message Input and Earth Terminal P1 P5 The module is supplied with voltage via connector P1 The nominal value of the supply voltage is 24 VDC The EMY OFF input and the message output of the module are also at P1 The message output can be connected optionally The EMY OFF inputs must be supplied with voltage otherwise the module cannot operate If the inputs are open the module is in RESET status 14 CAN CAI812 Hardware Rev 5 1 Installation fo If the EMY OFF inputs should not be used it is advisable to make bridges to the terminals of the module voltage supply which is next to the inputs in order to enable these Vec 24V DC Emergency Stop Input TOERE Message Outputs P1 Module Status LED Fig 2 2 2 Connection of the supply voltage and the EMY OFF input signal example EMY OFF function not in use Via the EMY OFF inputs the module can be integrated into an EMY OFF chain see fig 2 2 3 Wires with a cross section of up to 2 5 mm can be connected to connector P1 type MDSTBW 2 5 via a strippable screwed connector type MSTB 2 5 Detailed descriptions about connector P1 can be taken from the appendix CAN CAIS12 Hardware Rev 5 1 15 wa Installation Emergency Stop Chain
7. 3 2 3 CAN Identifier Bits id11 id4 SW0 SW1 Setting 00 FF s Switch 3 HIGH EE e LOW ar Function id8 id7 ETA ids ida l ida id2 BET The setting of identifier bit id1 is not evaluated on the CAI812 Id1 either selects channels 1 4 or 5 8 Table 3 2 2 Assignment of CAN identifier bits id1 to id8 to the coding switches CAN CAI812 Hardware Rev 5 1 25 ie Jumper Assignment 3 2 4 Bridges and Coding Switches of the Analog Inputs 3 2 4 1 Selection of Channels for Current Measurement J4 J18 Each input channel of the CAI812 has a jumper which enables a shunt of 250Q 0 1 between the two inputs Ix and Ix x 1 2 8 In order to configure the respective channel for measuring the current the jumper has to be set Standardly this jumper is open The electric position of the jumper and the shunt in the input circuit can be taken from the circuit diagram in chapter Analog Inputs The assignment of channels to jumpers is shown in the table below Channel of the CAI812 Jumper for current measurement AADNFWN HE Table 3 2 3 Current measurement assignment of channels to jumpers 26 CAN CAI812 Hardware Rev 5 1 Jumper Assignment li i For each channel of the CAI812 the voltage current area to be evaluated can be selected via a jumper 3 2 4 2 Selection of the Measuring Area J5 J19 If the jumper is open input voltages in the area of 45 V can be measured If the jumper is se
8. 5 V 5 V 20 mA 20 mA 10 V 10 V 40 mA 40 mA The possible jumper positions have already been described in the chapter Selection of the Measuring Area J5 J19 VO connector P4 U5 INA114 to U31 LTC1294 Pin 1 Fig 5 3 1 Analog input circuit of the module example channel 1 10 V Via the local software it is furthermore possible to configure the A D converter LTC1294 for unipolar measurements This makes measurements with 12 bit resolution in the areas of 0 5 V 0 20 mA and 0 10 V 0 40 mA possible This configuration is described in the software manual of the module CAN CAI812 Hardware Rev 5 1 37 WA Analog Inputs 5 3 2 Balancing the Analog Inputs The analog inputs can be balanced by the user by means of the firmware This procedure is described in the manual CAN CAI812 Manual of the Module Specific Software 38 CAN CAI812 Hardware Rev 5 1 LED Displays 5 4 LED Displays 5 4 1 Status LED LED 1 The status LED is between the coding switches and the CAN connector P3 In off voltage status the LED is white when run however it can luminesce in red or green Following table shows the meaning of the different luminous states of the status LED State of the samote Status of the CAN module EM module status is OK module runs with the parameters stored in the EEPROM mae sigue module status is OK module runs with the default parameters because 8 gt E
9. steady current interrupting current Table 1 1 3 Technical data of the EMY OFF input and the message outputs CAN CAI812 Hardware Rev 5 1 9 Overview 1 1 6 A D Converter Assemblies Number 8 inputs Resolution accuracy Common mode Measuring area Input resistance Supply voltage of the analog assemblies Potential separation from controller assemblies resolution of the converter 12 bit linearity and accuracy of the converter lt 1LSB measuring value display on the CAN straight binary normalized to 16 bit range of values on the CAN 7FFF 0000 8000 tolerance of measuring value 0004 voltage area 5 V common mode 8 V voltage area 10 V common mode 3 V selectable via jumpers 5 V 5 V 20 mA 20 mA 10 V 410 V furthermore selectable via software bipolar or unipolar measuring area with 12 bit resolution each voltage input gt 1 MQ current input 250 Q 1 o locally generated from the 24 V supply from the CAN module via DC DC converters Galvanical isolation according to German VDE regulation 0110b 8 isolation group C and installation into cubicle 300 V DC 250 V AC Table 1 1 4 Technical data of the analog inputs 1 1 7 Software Support The complete EPROM resident CAN communication firmware required to operate the module is contained in the delivery see software manual of the module 10 CAN CAI812 Hardware Rev 5 1 Order Information 1
10. 2 Order Information Type Properties Order no CAN CAI812 CAN module with 8 analog inputs C 2702 02 12 bit resolution CAN CAI812 MD user s manual in German C 2702 20 CAN CAI812 ME f user s manual in English C 2702 21 The manual is included in the price if ordered together with the module Table 1 2 1 Order information CAN CAI812 Hardware Rev 5 1 11 12 CAN CAI812 Hardware Rev 5 1 Installation wa 2 General Installation Notes 2 1 Installation and Fastening of the Module The esd CAN modules are flat assemblies which are designed for the installation into cubicles Thev can be installed on two rails NS 35 7 5 DIN EN 50022 space 150 mm next to each other It is important to consider the free spaces above and below the case as these are needed for the installation of connectors and cables and for latching the module case on the rails The dimensions and the required installation space of the CAN module can be taken from the following figure 111 5 M acc to DIN EN 50022 205 285 carrier rail mounting NS35 7 5 All dimensions in mm Fig 2 1 1 Dimensions and required installation space of the module case CAN CAI812 Hardware Rev 5 1 13 wa Installation If possible the modules are to be installed with the CAN connectors on top since possible LED displavs in the case can then be read much more comfortable 2 2 Installation of Connectors and Cables P3 P2 PI
11. Content Page 1 Functional Characteristics iS SE eee ence ee see 3 BES ed EE OE OE OE RE eyes 3 1 1 1 Description of the Module 423 EE GR HERE Ai Ma ab da i Broek 3 1 1 2 Case View with LED and Connector Description ses ss see 5 1 1 3 General Technical Data tits EER EER EERS KG ER ba Ee EE ER EERS ER EL 6 1 1 4 CAN and uController Assemblies EE EE eee eee eee ee 7 1 1 5 EMY OFF Input Message Outputs 332 sissa se EG iri a Se AR Wek EE 8 1 1 6 A D Converter Assemblies 234 EE ER e ES EE EG VER Ba SE ie eas 9 1 1 7 Software Support iii De EER Coes Ee RR e di eb BEER Dee eee g ada 9 1 2 Order Information 424 42 shheo22 erine EER EE bee bide ned EN GE AS Be ED EE ee 10 2 General Installation Notes s3 ti we 83 BES RE DN RSE B BED EED SS be es 11 2 1 Installation and Fastening of the Module 6 11 2 2 Installation of Connectors and Cables eee 12 2 2 1 Supply Voltage EMY OFF Message Input and Earth Terminal P1 P5 12 2 2 2 CAN Connections P2 P3 is seed e eb betas ote B de BE oY 14 223 VOG ondieelBr BA oth ah kan o A GE ED d UA Side kv a il a a at 15 3 Bridges and Coding Switches eee 17 3 1 Default Setting of Bridges and Coding Switches eee 19 3 2 Bridges and Coding Switches of CAN Assemblies 0 000020 eee eee 20 3 2 1 Use of other Physical Layers BRI BR2 Se ss ee eee 20 3 2 2 Configuration field J3 311 303 oi ER UR ME od Ge Ee Lin il
12. dimensions in mm mil Fig 5 1 2 Installation dimensions of the add on top view CAN CAI812 Hardware Rev 5 1 33 CAN Interface N Figure 5 1 2 shows the maximum permissible dimensions of the add on The free spaces above and below the add on have to be considered when mounting the add on Since the dimensions of these free spaces depend on the size of the chosen PCB connectors the user is responsible for keeping to the installation height The wrap plugs X7 and X8 are mounted optionally The size of the pins can vary depending on the design of the wrap plugs The minimum size of the pins is 8 mm including the plastic socket The pins of the wrap plugs have a square cross section of 0 635 mm Two mounting holes are available for installing the add on with 2 5 mm screws 34 CAN CAI812 Hardware Rev 5 1 EMY OFF Input and Message Outputs 5 2 EMY OFF Input and Message Outputs 5 2 1 EMY OFF Input The EMY OFF input of the module is connected to the RESET input of controller 8xC592 via optocoupler U1 TLP620 If the EMY OFF input is dead at P1 the module is in RESET status This means that the connections EMY and EMY have to be supplied with voltage on P1 for the operation of the module even if the EMY OFF option is not used This can be achieved e g by externally bridging pins 2 and 5 of the connector and the inputs The nominal voltage of the EMY OFF input is 24 V DC between EMY and EMY for the operation
13. or Si9200 and another interface should be used the CAN connectors have to be separated from the driver This is achieved bv removing thin conductor lines between the pads of soldering bridge BRI If required the connections can be established again bv soldering the pads The soldering bridge is on the bottom laver of the PCB near to the CAN connectors Furthermore the Rx output of optocoupler U3 has to be separated from the interface since the coupler sets its outputs also with open input This is avoided bv separating the thin conductor line between the pads of soldering bridge BR2 If required this connection too can be established again by soldering the pads of the bridge BR2 can be found on the component laver of the PCB next to optocoupler U3 of the CAN interface BRI Ij ot ol GND GND CAN_L CAN_H View of bottom layer CAN connectors to the right 2 BR2 1 CRx0 from U3 HCPL7100 View of component layer CAN connectors to the left Standard setting All bridges are connected 22 CAN CAI812 Hardware Rev 5 1 Jumper Assignment 3 2 2 Configuration field J3 Jumper Bit Function D7 mode D6 D5 bitrate D4 D3 D2 CAN identifier bit idil D1 CAN identifier bit id10 DO CAN identifier bit id9 jumper set gt bit 1 Function of bits Mode D7 Only for esd internal use jumper open normal mode jumper set
14. via J3 Further information on this can be taken from the software manual of the esd CAN protocol A detailed description of the possible bit rates can be taken from the description of jumper J3 5 1 2 Transmit and Receive Circuit of the CAN Interface Phvsical Laver The phvsical interface of the esd CAN corresponds to the norm ISO 11898 The interface is connected to the busline via 9 pin DSUB connectors from which one is male and one is female Other physical lavers can optionally be realized by mountable piggyback The Si9200or the 82C250 for instance are used as CAN transceivers on the module The voltage supplv of the CAN is galvanicallv isolated from the fed 24V supplv and the CAN controller 8xC592 The signals are galvanicallv isolated from the CAN bv means of optocouplers CAN CAI812 Hardware Rev 5 1 31 CAN Interface DCDO2 S7U 0505 P2 P3 9 pole DSUB CAN GND G X7 CAN_GND connector plugs CAN_L 1x10 DO option CAN H n c U2 CAN GND SDA HCPL7100 SCL VCCout GND OUT U4 sine Si9200 TXI l 82C250 TXO GNDin GNDout CAN GND Ne 24V CAN L 10 pole VCC 3 connector plugs RX1 CAN H option Si RXO CAN transceiver CAN GND o ENABLE GNDout GNDin optocouplers add on option X7 X8 for other phvsical lavers 24 V VCC GND local supply voltages galvanically isolated from the CAN interface TXO RXO signals of CAN controller 8xC592 U9 which are led onto the CAN via a
15. CAN CAI812 8 Analog Inputs 12 Bit Resolution Hardware Manual CAN CAI812 Hardware Rev 5 1 NOTE The information in this document has been carefully checked and is believed to be entirely reliable esd makes no warranty of any kind with regard to the material in this document and assumes no responsibility for any errors that may appear in this document esd reserves the right to make changes without notice to this or any of its products to improve reliability performance or design esd assumes no responsibility for the use of any circuitry other than circuitry which is part of a product of esd gmbh esd does not convey to the purchaser of the product described herein any license under the patent rights of esd gmbh nor the rights of others esd electronic system design gmbh Vahrenwalder Str 205 D 30165 Hannover Germany Tel 49 511 372 980 Fax 49 511 633 650 Email pm esd h eunet de CAN CAI812 Hardware Rev 5 1 Manual File I TEXTE DOKU MANUALS CAN CAI812 CAI825 1H EN6 Date of Print 24 11 97 Described PCB Version CAI812 4 Changes in the Chapters The changes in the user s manual listed below affect changes in the hardware as well as changes in the description of the facts only TA LT with respect to Rev 5 0 First First english issue issue l fa Further technical changes are subject to change without notice CAN CAI812 Hardware Rev 5 1 CAN CAI812 Hardware Rev 5 1
16. EPROM data is defective or deleted 50 ms red LED flashes 40 ms green current CAN error 40 ms red ED Res The module found a temporary CAN error which however is not active 50 ms green anymore 250 ms red Voltage supply is OK all other functions of the module are out of order r uC constantly red 8xC592 is not working or an internal error has occurred In this case the user should contact the supplier who will then remove the error Table 5 4 1 Display of the status LED The position of the status LED on the module can also be taken from the figure in the chapter Case View with LED and Connector Description CAN CAI812 Hardware Rev 5 1 39 40 CAN CAI812 Hardware Rev 5 1 Connector Assignment 6 Appendix 6 1 Connector Assignments 6 1 1 Voltage Supply and EMY OFF P1 P1 row 1 lower row internal 24V 24V EMY EMY GND GND assignment pin 1 2 3 4 5 6 A A A A A A external connections ka ae 24V O O GND of the supply EMY OFF bridge supply voltage key switch for voltage optional EMY OFF The EMY OFF input is inactive no EMY OFF if a voltage of 24 VDC is applied between the terminals EMY and EMY For this either the supply voltage see example above or any other DC voltage can be used The EMY OFF input is galvanically isolated from all other assemblies of the CAN module If the voltage between the EMY inputs is disconnected e g by key switch breaker a l
17. VO Connector P4 Wires with a cross section of up to 2 5 mm can be connected to the screw terminal P4 type MSTB 2 5 The screwed connections are pluggable in groups Following display shows the top view of the screw terminal with the position of the individual connections internal connections to case cover 11 11 12 12 13 I3 14 14 15 15 16 16 17 I7 18 18 e g 10V 10V Fig 2 2 4 Connection of the analog inputs to P4 CAN CAI812 Hardware Rev 5 1 17 18 CAN CAI812 Hardware Rev 5 1 Jumper Assignment 3 Bridges and Coding Switches 3x MOSTB2 572 UCC 24U A SOSO NeS O0nl R38 cself AF CS7 holed 9 en TOO 19 49 1S2S2W1 O o u uqub pse ZHW9 I ez 624 iT ZZ OL J501 J502 J503 J504 U x O ol DU wo N E dk T o o J19 J17 J15 J13 J4 J6 J8 JIO J12J14 JI6J18 Fig 3 1 1 Position of the coding switches and the bridges on the component layer of the PCB CAN CAIS12 Hardware Rev 5 1 19 20 Jumper Assignment
18. ault setting see following table as factorv set is registered 3 1 Default Setting of Bridges and Coding Switches The arrangement of bridges and coding switches on the component layer can be taken from figure 3 1 1 In the following the bridges are shown as seen bv the user when the PCB is viewed with the CAN connectors to the left The arrangement of bridges on the bottom layer can be taken from figure 3 1 2 In the following the soldering bridges are shown as seen by the user when the PCB is viewed with the CAN connectors to the right Bridge A piggyback connection for other phvsical lavers J4 J6 current measurement channels 1 open i e all inputs are configurated to J16 J18 to 8 measure voltage standard according to ISO 11898 setting the measuring area jumpered i e the measuring area is set to channels 1 to 8 10 V for all channels J401 J402 bridging the potential dividers of potential dividers and filters are not J503 J504 the input circuits bridged coding switches SWO LOW SW1 HIGH CAN identifier bits id4 id11 user dependent Table 3 1 1 Default setting of bridges and coding switches CAN CAIS12 Hardware Rev 5 1 21 li i Jumper Assignment 3 2 Bridges and Coding Switches of CAN Assemblies 3 2 1 Use of other Phvsical Lavers BRI BR2 If other phvsical interfaces are to be used the module can be equipped with an ADD ON If the module already has the CAN driver 82C250
19. d u Controller Assemblies physical layer according to ISO 11898 CAN Mitac add on option for other physical interfaces Ee EE selectable via jumpers or programmable from 10 kbit s to 1 Mbit s a can be set via coding switches and are programmable via the CAN GP Nee the module assigns 2 Tx identifiers esd module no Can be set via coding switches and programmed via CAN ucontroller 8xC592 16 MHz for storing the firmware EERS memory capacity 32 kbytes EEPROM for storing the CAN parameters SRAM memory capacity 32 kbytes LED display dichromatic LED for displaying the status of the ucontroller Galvanical isolation of the CAN according to German VDE regulation 0110b 8 isolation group C and interface from installation into cubicle ucontroller 300 VDC 250 VAC assemblies Table 1 1 2 Technical data of the CAN and controller assemblies 8 CAN CAI812 Hardware Rev 5 1 Overview 1 1 3 EMX OFF Input Message Outputs EMY OFF input Nominal voltage 24 V reverse battery protected EMY OFF is triggered if the input is dead activation triggers local RESET Galvanical isolation input isolated from controller assemblies via optocoupler Message outputs Activation 1 break contact 1 make contact total system status OK gt message outputs activated breaker open maker Activation closed Switching voltage DC 1 mV 100 V DC switching current area Load capacity make current DC
20. dd On Male Connector X7 optional In connection with connector X8 the optional connector X8 can be used for an add on for the use of other phvsical lavers Signal description 24V VCC GND TXO RXO TXI RXI SDA SCL Pin Signal wrap plug 1 x 10 local supply voltages galvanically isolated from the CAN interface signals of the CAN controller 8xC592 U9 which are led onto the CAN via available interface signals of the CAN controller 8xC592 for future applications add on local serial bus FC generated by the 8xC592 ports P1 1 SDA and P1 3 SCL CAN CAIS12 Hardware Rev 5 1 47 48 CAN CAI812 Hardware Rev 5 1 6 2 Circuit Diagrams CAN CAI812 Hardware Rev 5 1 Circuit Diagrams 49 50 CAN CAI812 Hardware Rev 5 1 6 3 Data Sheets CAN CAI812 Hardware Rev 5 1 INA114 Data Sheets i g 51 52 CAN CAI812 Hardware Rev 5 1
21. ge 6 1 Connector Assignments ie spa i Re DE EER ees doe bee eee b GER se 39 6 1 1 Voltage Supply and EMY OFF P1 ee Ses Se se Ses Se ke se se 39 6 1 2 VO Connectors P4 MSTB 2 5 40 pin LL 41 6 1 3 CAN Connector P2 9 pin DSUB male es ES SE Se se see 42 6 1 4 CAN Connector P3 9 pin DSUB female 6 43 6 1 5 Add On Male Connector X8 optional 0 0 0 eee eee eee 44 6 1 6 Add On Male Connector X7 optional ES SE Se se see 45 6 2 Circuit Da ARTI s Aude SE A ea AR A a DS RA mija n AD oe 47 6 3 Data SHEE 14 sessi EES EE ED SERED OE eG CAM Ee eave ea Se 49 2 CAN CAI812 Hardware Rev 5 1 Overview 1 Functional Characteristics 1 1 Overview 1 1 1 Description of the Module electrical isolation Channel 1 Physical CAN Layer Emergency Stop digital and Message Output VO Ports P4 Terminal Block digital Power Supply VO Ports Input 24 V DO Output 5 V DC P1 Terminal Block external SRAM Fig 1 1 1 Functional block diagram of the CAI812 The CAI812 module offers 8 differential analog inputs with a 12 bit resolution The input voltage area can be selected via jumpers separately for each channel between 5 V and 10 V Furthermore the module can be configurated via jumpers channel by channel for current measurement 20 mA 40 mA By means of the software it is possible to select whether the input signals are to be evaluated bipolarly or unipolarly T
22. he analog inputs are evaluated by means of the A D converter LTC1294 which is galvanically isolated from the CAN assemblies The firmware offers the possibility to let the user select zero point and measuring area of the individual channels The physical CAN layer is galvanically isolated from the other local assemblies and is designed according to ISO 11898 for a bitrate of 1Mbit s Other physical layers are optionally realizable via mountable piggyback CAN CAI812 Hardware Rev 5 1 3 Overview The bitrate can be altered via jumpers on the PCB or configurated via the CAN The CAN identifiers of the module can be set via two externally accessible rotary switches or they can also be configurated via the CAN A dichromatic LED signalizes the total system status of the module Additional monitoring functions increase the reliability After the watchdog time has elapsed the watchdog timer integrated into the ucontroller automatically triggers a RESET of the CAN module Via the potential free EMY OFF input and the relay message output the module becomes part of an EMY OFF chain 4 CAN CAI812 Hardware Rev 5 1 1 1 2 Case View with LED and Connector Description Overview DIP switches setting of the module no and the default value of the CAN identifier bis id1 id8 LED 1 red green board status LED lights green no error LED lights red error on board LED off power supply failed P2 and P3
23. ii 21 3 2 3 CAN Identifier Bits id11 id4 SWO SWI LL 23 3 2 4 Bridges and Coding Switches of the Analog Inputs 24 3 2 4 1 Selection of Channels for Current Measurement J4 J18 24 3 2 4 2 Selection of the Measuring Area J5 J19 L 25 3 2 4 3 Bridging the Potential Divider and the Second Input Filters G40 le bl EO OR OR ORE al 26 4 CAN Identifiers EE SE kein eaten wl DEE EE OE KEER DE SEG Ba BERE DE ee 2 EER DE es 27 5 Description of the Assemblies EE EE EE SS eee ee ee ee ee 29 AE AN IRIEIERGE EE ES EER ie EE ER Ed ee ES E oe he ta ER SG te ees es 29 AD Mi EERS EE IE OH EE IE EE DE N 29 5 1 2 Transmit and Receive Circuit of the CAN Interface Physical Layer 29 5 1 3 Use of other Physical Layers Add On Option ie ss ss se se 31 5 2 EMY OFF Input and Message Outputs iese ss se Se Se Se Se Se Se Se Se se ee 33 9 2 LEMX OFF Input si 6 ER eke BOSE nes Pen uta oe ee OE DER ER ds 33 5 2 2 Message Outputs ie De cas EER EE Geen GER ER EE Ba oe Eee See eae 34 3 3 Analog TAPUES veins Sesh did EE DER GES te ib bo EE doe i ia ea al ho eb 35 J2 L Ui ee REEL EL ET ON earns te dae EED HA 35 5 3 2 Balancing the Analog INDUSEER BREER EE Br ED e bba 36 JALED Display ss ii iv GES So aoe SE De SAT EER SE DRIE DER ASE DE RR i 37 5401 Stats LED TED Vy sia tini OE ER IG OE AE 37 G Append xx ka A BR RE a DA a RE RE EG SEA ME AR E AMY DAE 39 CAN CAIS12 Hardware Rev 5 1 1 Content Pa
24. ocal RESET is triggered on the module The RESET is maintained until voltage is applied to the EMY OFF inputs again The EMY OFF inputs are always evaluated The EMY Off function cannot be blocked that means that a voltage must always apply to the EMY OFF inputs when the module is to be taken into operation CAN CAI812 Hardware Rev 5 1 41 42 Connector Assignment The EMY OFF input can be accessed by two male contacts each Contacts 3 and 11 and contacts 4 and 12 are internally bridged The construction of an EMY OFF chain is shown in detail in the chapter General Installation Notes Pl row 2 upper row T T internal relay relay EMY EMY assignment breaker maker pin 7 8 9 10 11 12 A A A A external connections example supply alarm supply voltage for device voltage for alarm device e g horn load relay load relay T N l breaker CAN CAI812 Hardware Rev 5 1 Connector Assignment 6 1 2 VO Connectors P4 MSTB 2 5 40 pin Ix Ix differential analog inputs x 1 2 8 GNDA reference potential Note The permissible input voltage area of a channel depends on the position of the according jumper see section Selection of the Measuring Area and the software parameterization unipolar bipolar CAN CAI812 Hardware Rev 5 1 43 Connector Assignment 6 1 3 CAN Connector P2 9 pin DSUB male
25. of the module The EMY OFF input as well as the connections of the supply voltage cannot be polarized wrongly U1 TLP620 Fig 5 2 1 Input circuit of the EMY OFF input In chapter General Installation Notes detailed displays of the wiring of the EMY OFF input can be found The description of the assignment of connector P1 can be taken from the appendix CAN CAI812 Hardware Rev 5 1 35 EMY OFF Input and Message Outputs STOP 5 2 2 Message Outputs The module has two message outputs at P1 which are enabled by a relay One output is connected to the maker and the second output is connected to breaker of the relav The relay is driven via a 74HC14 component from port P35T1 pin 30 of the controller 8xC592 PI plug terminal connectors from U9 8xC592 Port P35TI EER 74HC14 Fig 5 2 2 Circuit of the message outputs The description of the assignment of connector P1 can be taken from the appendix 36 CAN CAI812 Hardware Rev 5 1 Analog Inputs EJ 5 3 Analog Inputs 5 3 1 Input Circuit The input circuit of the CAI812 has been designed in a way that individuallv for each channels the desired voltage measuring area can be chosen via a jumper J5 J19 provided that J401 J504 are set accordingly The input circuit has a shunt which can also be enabled via a jumper J4 J18 and by which it is possible to measure current via the module Depending on the jumper positions following measuring areas are possible
26. t the voltage measuring area is 10 V Standardly all jumpers are set The measuring area can only be selected via the jumpers J5 J19 if the jumpers J401 J504 see following chapter are set accordingly Jumper J5 J19 Measuring area voltage 5 V 5 V 10 V 10 V measurement lede Wes 20 mA 420 mA 40 mA 40 mA current measurement Jumpers J4 J18 are set according to current or voltage measurement set open default setting Table 3 2 4 Setting the measuring area via jumper J5 J19 Channel ofte Jumper for measuring CAIS12 area setting 1 2 3 4 5 6 7 8 Table 3 2 5 Measuring area assignment of channels to jumpers CAN CAI812 Hardware Rev 5 1 27 ie Jumper Assignment 3 2 4 3 Bridging the Potential Divider and the Second Input Filters J401 J504 For each channel a jumper is available by means of which the potential divider which is switched on via jumpers J5 J7 and J19 can be bridged Furthermore the following low pass of the instrument amplifier INA114 is bridged The function of the jumper can also be taken from the figure in the chapter Input Circuit Jumper positions ik l oe potential divider is active input voltage can be selected between 5 V and 10 V filter circuit is active default setting potential divider and filter are not active input voltage area is always 5 V jumper position of J5 J7 J19 is unimportant
27. testmode CAN CAI812 Hardware Rev 5 1 23 ie Jumper Assignment Bitrate D6 D3 Transmission speed A jumper here sets the according bit to the value 1 The specified typical line lengths base on experimental values from practice The minimum reachable line lengths result from the worst case delay of the components used The default setting of the module as factory set is shown in bold print Jumper bits 8xC592 register B typical values of the minimum D6 BTRO BTRI TANJA reachable line length reachable line HEX HEX Las ml length 1 Dm O OOOOOO The specifications in the table base on the limit values of the bit timing of the CAN protocol the delav times of the local CAN interface and the delav times of the cable This is assumed with about 5 5 ns m Further influences as caused for instance bv missing terminal resistors the specific resistance the cable geometry or external disturbances have not been considered for the transmission Table 3 2 1 Setting the transmission speed via J3 CAN Identifier Bits id9 to id11 DO id9 DI id10 D2 id11 jumpered bit 24 CAN CAI812 Hardware Rev 5 1 Jumper Assignment li i Via the coding switches HIGH SW 1 and LOW SWO the default values of the CAN identifier bits idl to id8 are set Furthermore the value set at the coding switches corresponds to the esd module no see software manual of the module
28. vailable interface TXI RXI signals of CAN controller 8xC592 for future applications add on SDA SCL local serial bus I C generated by the 8xC592 ports P1 1 SDA and P1 3 SCL Fig 5 1 1 Functional circuit diagram of the CAN interface in use with the interface components Si9200 or 82C250 The description of the connector assignment can be taken from the appendix 32 CAN CAI812 Hardware Rev 5 1 CAN Interface 5 1 3 Use of other Physical Layers Add On Option The CAN module offers the possibility to run the CAN with other physical layers For this matter a PCB with the desired circuit can be mounted on an add on plug in If the module is eguipped with the CAN drivers 82C250 or Si9200 the CAN connectors have to be separated from the driver This is achieved by removing thin conductor lines between the pads of bridge BRI Furthermore the Rx output of the optocoupler U3 of the standard interface has to be separated since the coupler also sets its output with open input This can be avoided bv separating the conductor line between the pads of bridge BR2 The add ons are electrically connected via the optionally equipped wrap plugs X7 and X8 The pin assignment and description of these connectors can be taken from the chapter Connector Assignments which can be found in the appendix 5 08 200 6 35 250 S 8 ES oj N Dj o N N 5 08 200 10 79 425 41 28 1625 46 36 1825 48 9 1925 All
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