Block I/O Cat. No. 1791-IOBX and -IOVX
Contents
1. wu Device ISH Common 124914 2 6 Chapter 2 Installing Block 1 0 Table 2 D 1791 IOBX Output Terminal Wiring for Groups 2 and 3 TRM4 for PLC Family Programmable Controllers 37 36 DC Output Assignment Output Assignment Terminal Group 3 Terminal Group 2 Number Number es 1 2 Fes 3 ISH Device 5 Output14 Output 12 7 13 Output 11 26 Output12 Output10 St 8 Output12 Output 10 27 Output 11 Output 09 ISH 9 Output 08 Output 07 SHH utput07 Output 07 30 Output06 Output 06 S aw p loupo 04406 31 0 08 Output 05 m 13 4 405 Output 05 32 Outputo4d Outputo4 ISH Deu 14 Output04 Output 04 33 Output 03 Output 03 I 15 Output 03 Output 03 34 Output 02 Output 02 ISE 16 Output02 Output 02 35 Output 01 Output 01 IS 17 Output01 Output 01 36 Output 00 Output 00 18 Output00 Output 00 37 VDCC VDCC fwo T Common 124914 2 7 Chapter 2 Installing Block 1 0 Table 2 E 1791 IOVX Input Terminal Wiring for Groups 0 and 1 TRM1 for PLC Family Programmable Controllers Input Assignment Input Assignment Group 0 Terminal Group 1 Number DC Terminal Number FZ ial nput 07 10 nput 08 11 nput 09 12 nput 10 13 nput 11 14 nput 12 15 nput 13 put 14 n 17 put 15 nput 15 182. SSISSSSSSSSSSGSOOSSSSSSSSSSSSSSSS SSI GSSISGSSSSSSSS GROUP No CONFIGURATION SWITCHES DISPLAY E 1791 IOBX 128 POINT 24V DC DISTRIBUTED 10 MODULE 64 24VDC SINK INPUTS 01 64 24VDC SOURCE OUTPUTS 11 CONFIGURATION SWITCHES 4 31211 OUTPUT LAST STATE LATCH OFF ON RESET 0to3 OFF 4107 ON 11 GROUP 13 Termination Resistor S SS O SSS SS S SS 150 Ohm Off 82 Ohm 109314 Chapter 3 Configuring Your Block 1 0 Figure 3 2 Configuration Switch Settings PLC designations shown Rack Address Switch Refer to Table 3 A ar Lj en 8 7 6 5 4 3 2 1 S e f L SWITCHES Suis 2 05 S S 122 2 5 Si S 1 12 ER O Configuration S witch Top View of S witch NotUsed 7 UH 57 6kbps 115 2kbps 230 4kbps Unused STATE Reset ON Last State Switch 3
3. c WC 124934 2 8 Chapter 2 Installing Block 1 0 Table 2 F 1791 IOVX Input Terminal Wiring for Groups 2 and 3 TRM2 for PLC Family Programmable Controllers Input Assignment Input Assignment Group 2 Terminal Group 3 Number VDC Terminal Number cL nput 07 10 nput 08 nput 09 LL 102 12 nput 10 21 4 14 12 pz 2l E Input 13 e put 14 n 17 put 15 nput 15 18 c WC 22 rora rora PHS 36 37 124934 2 9 2 Installing Block 1 0 Table 2 0 1791 IOVX Output Terminal Wiring for Groups 0 and 1 TRM3 for PLC Family Programmable Controllers Output Assignment Output Assignment roup 1 Terminal Group 0 SLC PLC VDC Terminal G Number umber IN 1 N C N C 20 Common S 2 Common Output IT Outputs 3 Output17 Output 15 Output16 Output 14 Sh 4 Output16 Output 14 Output 15 Output 13 5 Output15 Output 13 Output 14 Output 12 Field 6 Output14 Output 12 Output 13 Output 11 7 Output13 Output 11 26 Output 12 Output 10 8 Output12 Output 10 27 11 Output 09 lt 9 11 Output 09 Output 10 Output 08 isa 10 1 JR Out Output07 Output 07 30 Output 06 Output 06 12 Output06 Output 06 31
4. Title Topics Covered Introducing Block 1 0 Description of the module including general and hardware features Installing the Module Module power requirements location and wiring information Configuring your block 1 0 How to set the configuration switches and address the block 1 0 Troubleshooting How to use the indicators to troubleshoot your block 1 0 module How to replace the fuse Appendix A Specifications for the block 1 0 1 Preface Using This Manual About Block I O Related Publications P 2 Block I O consists of small self contained remote I O devices complete with power supply programmable controller interface input output connections and signal conditioning circuitry This publication covers the 1791 and IOVX block I O modules The 1791 IOBX has 64 sinking inputs and 64 sourcing outputs the 1791 IOVX has 64 sourcing inputs and 64 sinking outputs In all other aspects they are identical For a list of publications with information on Allen Bradley programmable controller products consult our publication index SD499 Introducing Block I O Installing Block 10 Configuring Your Block I O Troubleshooting Specifications 5 1 Chapter Objectives General Description How the Block Fits ina PLC System SUMMALY Heed caw e
5. Output05 Output 05 STS 13 Output 05 Output 05 32 Output 04 Output 04 14 Output 04 Output 04 33 Output 03 Output 03 7 15 04 403 03 34 Output02 Output 02 AST SSH i Output Or Jt pevce 17 01 Output 01 36 Output 00 Output 00 18 Output00 Output 00 37 VDCA VDC A 124944 2 10 Chapter 2 Installing Block 1 0 Table 2 H 1791 IOVX Output Terminal Wiring for Groups 2 and 3 4 for PLC Family Programmable Controllers Output Assignment Output Assignment roup 3 Terminal Group 2 VDC Terminal Number G 1 N C N C 20 CommonC Common 3 Common Ouputl _ 15 SI 3 Output17 Output 15 Output16 Output 14 T 4 Output16 Output 14 Output 15 Output 13 5 Output15 Output 13 Output14 Output 12 FT 6 Output14 Output 12 Output 13 Output 11 1 Output13 Output 11 26 Output 12 Output 10 8 Output12 Output 10 27 11 Output 09 9 11 Output 09 Output 10 10 Output10 Output 08 Output 07 Output07 Output 07 30 12 Output06 Output 06 31 Output 05 Output 05 13 Output05 Output 05 32 Output 04 Output 04 7714 Output04 Output 04 33 Output 03 Output 03 715 Output03 Output 03 34 Output 02 Output 02 ie 35 17 Output01 Output 01 36 Output 00 Output 00 7718 Ou
6. Voltage Output phe Maximum Surge Current 179140 24V dc 300 per point 2 4A continuous per 16 point group 24V dc maximum surge current 1 0A for 25ms 1791 10VX 1 pulse second maximum Consult the factory for fuse recommendations In this chapter you learned how to physically mount your block I O make power wiring connections how to make the input output wiring connections to the block and how to terminate the remote I O link 2 15 Chapter 2 Installing Block 1 0 This page left intentionally blank 2 16 Configuring Your Block Chapter Objectives In this chapter you will learn how to configure your block I O when used with PLC family programmable controllers This includes the following setting the configuration switches addressing the block I O To learn how to configure your block I O when used with SLC 500 processors refer to the publication for the 1747 SN Remote I O Scanner Module Setting the Configuration Each block I O module has multiple position switches for setting Switches transmission baud rate used to set the communication rate chosen for the remote I O link a last state when last state is enabled a processor reset will keep the outputs in their present last state when last state is disabled the outputs will reset processor restart lockout PRL when PRL is enabled switch 4 on the programmable controller cannot automatically start
7. tomati Rociwell Automation Allen Bradley Block 1 0 Cat 1791 IOBX and User Manual M Important User Information Because of the variety of uses for the products described in this publication those responsible for the application and use of this control equipment must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements including any applicable laws regulations codes and standards The illustrations charts sample programs and layout examples shown in this guide are intended solely for example Since there are many variables and requirements associated with any particular installation Allen Bradley does not assume responsibility or liability to include intellectual property liability for actual use based upon the examples shown in this publication Allen Bradley publication SGI 1 1 Safety Guidelines For The Application Installation and Maintenance of Solid State Control available from your local Allen Bradley office describes some important differences between solid state equipment and electromechanical devices which should be taken into consideration when applying products such as those described in this publication Reproduction of the contents of this copyrighted publication in whole or in part without written permission of Allen Bradley Company Inc is prohibited Throughout this manual we make
8. 128 POINT 24V DC DISTRIBUTED Removable Removable 10 MODULE Output Terminal Input Terminal 64 24VDC SINK INPUTS Blocks Blocks 64 24VDC SOURCE OUTPUTS CONFIGURATION SWITCHES Terminal Block Removal Screws same on all 4 terminal blocks GROUP No GROUP No Ln Termination RIO Wiring Block N d Resistor 24 dc Power Switch 109144 Wiring Terminals remote field wiring is made 4 separate removable 37 pin terminal blocks mounted on the sides of the module Terminal assignments are shown in chapter 3 A separate nonremovable terminal block is provided for connection of the remote I O link and external 24V dc power supply 1 2 How the Block I O Fits in a PLC System Chapter 1 Introducing Block 1 0 Switch Assemblies Two DIP switches are provided for setting the I O configuration and rack address The configuration switch lets you select baud rate last state processor restart lockout last rack and I O group The rack address switch lets you select the system rack address for the block A third switch is provided for selection of the termination resistor Status Indicators Indicators are provided for power active communication and fuse blown indications An LED array provides input output status Status Indicators Bi color LED indicators provide power active communication and fuse blown indications An LED array provides input output status Indicator Indication Customer voltage
9. 2 1 Chapter 2 Installing Block 1 0 Figure 2 1 Mounting Dimensions for the Block I O Module Cat 1791 IOBX and IOVX 6 15 T J 156 21 4 8 17 105 1 4 ORA 87651413 211 2 2 ONFIGURATION S 5 SWITCHES Si e IS eue W eae T a LE 5 SHE i2 cj B DISPLAY S 2 ACTIVE 2 2 COMM S 5 2 FUSE INPUT OUTPUT S 5 2 S 1 2 S 42 IS Dimensions 2 2 6 15W x 13 0 x 1 720 1
10. 42 11 9 Output 11 0X Y 3 11 28 Output 10 0X Y 2 10 10 Output 10 4310 2 Output 07 OX Y 42 07 12 Output 06 OX Y 3 06 31 Output 5 OX Y 2 05 13 Output 05 3 05 32 Output04 _ OX Y 2 04 14 Output 04 Y 3 04 33 Output 03 0X Y 2 03 15 Output 03 0 3 03 34 Output 02 0X Y 2 02 16 Y 3 02 3 0X Y 42 01 17 0 2 00 18 GROUP No 19 Where X 2 Rack Number 1 2 3 Y Module Group 0 7 109424 Summary In this chapter you learned how to set the configuration switches and the rack addresses for input and output terminals 3 14 Chapter Objectives Indicators Troubleshooting In this chapter you will learn about the indicators on the block I O module and how to use them to troubleshoot the unit Each block I O module has indicators Figure 4 1 which provide indication of specific functions Each module has the following Status Indicators Indicators are provided for power active communication and fuse blown indications An LED array provides input output status a POWER Indicator green on continuously if customer voltage is present off if power is not applied or there is an internal power supply problem a ACTIVE Indicator redif the CPU is not running green if the CPU is operating correctly COMM Indicator indicates the status of the RIO link green when communication is correctly established off when commu
11. CAUTION Set switch 3 to the ON position to deenergize outputs wired to this module when Last Rack Switch 5 a fault If switch 3 is set to the PLC 2 OFF position outputs connected to this OFF When module does not contain the highest module remain in their last state when a fault numbered group for the associated rack number occurs and machine motion may continue ON When module does contain the highest after fault detection numbered 1 0 group for the associated rack number Disabled OFF PLC 3 Enabled ON This switch must always be setto OFF 3 PLC 5 Processor Restart Lockout PRL Switch 4 This switch not used When PRL is enabled on the programmable controller cannot automatically start up the module s v communications if the power has been cycled to either the module or the programmable controller 109324 3 3 Chapter 3 Configuring Your Block 1 0 Table 3 A Rack Address Switch Settings 1747 5 1771 SN PLC 2 PLC 5 PLC 5 250 PLC 3 Rack Address Switch Position Rack Rack Rack Rack Rack Rack Number Number Number Number Number Number 4 2 Rack 0 Rack 1 Rack1 Not Valid Rack 0 Rack 0 0 0 0 11111 2 3 3 Rack 2 Rack 2 Rack 2 0 0 0 1 Racks Po EXE EXE ERE Rack 10 Rack 10 Rack 11 Rack 11 Rack 12 Rack 12 Rack 13 Rack 14 Rack 14 Rack 15 Rack 15 Rack 16 Rack 17 Rack 17 Rack 20 Rack 20 Rack 21 Rack 22
12. current Turn On time Turn Off time Input to System Isolation Group to Group Isolation 64 4 groups of 16 1791 Sinking 1791 10 Sourcing 12 0 to 26 4V dc 1 56 minimum 1 0 dc maximum 1 0mA dc maximum 10msec maximum 4msec 10msec maximum 4msec 1500V ac opto for 1 second 1500V ac air gap for 1 second Appendix Specifications Output Specifications Number of outputs Output type aximum output range aximum on state voltage drop aximum on state current inimum on state current Output Current per output group Surge Current Off state voltage Off state leakage current Turn on time Turn off time Fuse Type Outputto System Isolation Group to Group Isolation 64 4 groups of 16 1791 108 Source 1791 10 VX Sink 18 0 to 26 4V dc 9 300maA resistive 1 5V dc maximum 259C at rated current 300 per point maximum 5mA minimum 2 44 maximum continuous 1 0A for 25ms maximum 1 pulse per second max 26 4V dc maximum 0 5mA maximum 2 0ms maximum 2 0ms maximum 5 0A slow blow 5 X 20mm size one per group 1500V ac opto for 1 second 1500V ac air gap for 1 second baud rate 3 1 3 3 C compatibility 1 1 extended node numbers 2 15 configuration switches 3 3 setting 3 1 connection in a PLC system 1 6 connections wiring 2 3 D description 1 1 IOBX 1 3 IOVX 1 4 dimensions mounting 2 1 E exte
13. 10 nput 13 nput 14 nput 15 nput 11 nput 12 nput 13 3l 32 33 put 11 put 12 put 13 n n n n n n n 8 Input 06 26 input 06 n n n n n n n n n 16 nput 16 nput 14 34 nput 16 put 14 17 nput 17 nput 15 35 nput 17 nput 15 18 36 J GROUP GROUP 124904 2 5 2 Installing Block 1 0 Table 2 C 1791 IOBX Output Terminal Wiring for Groups 0 and 1 TRM3 for PLC Family Programmable Controllers SLC PLC SU Assignment Tm Terminal roup 1 ermina roup 0 Number E Number P OUTPUT OUTPUT DC DC 1 NC NC 1 Common Commons 7I 3 15 22 3 73 5 Opus 2 6 Output14 Output 12 1 Output13 Output 11 26 Output12 Output 10 8 Output 27 Output Outputs 708 28 7 10 fou Ouput S 29 A OutputO7 Output 07 Output 06 Output 06 12 Output06 Output 06 Output05 Output 05 13 Output05 Output 05 32 Output 04 Output 04 7714 Output04 Output 04 33 Output 03 Output 03 715 Output03 Output 03 34 Output 02 Output 02 16 Output02 Output 02 35 Output 01 Output 01 1 Output 01 36 00 Output 00 18 Output00 Output 00 37 VDCA VDC A
14. 791 0BX S IS 156 21W x 334 0H x 43 7D ice 128 POINT SHS oL 24V DC SO 1228 130 DISTRIBUTED 312 0 334 0 3220 120 3340 gt MODULE S S 28 SIS CONFIGURATION SWITCHES 5 ee SS ae 2 Se 2 S Inches e 2 5 Millimeters 2 GROUP No GROUP No HS S e S 212 Se ee S 5 109164 The operating temperature the air gap between block 1 modules must not exceed 609C 1409F The dimensions of the air gap required are shown in Figure 2 2 2 2 Connecting Wiring Chapter 2 Installing Block 1 0 Figure 2 2 Clearance Required for Block I O Modules 2 50 8 Inches 2 Millimeters 50 8 50 8 10919 1 Connections to the block I O module are made to the removable terminal blocks on each side of the module Input connections are on the left side and output connections are on the right side The input terminal blocks are keyed differently than the output blocks to prevent incorrect insertion removed for wiring or module replacement make certain that the terminal blocks are placed in their proper position when reinstalling ATTENTION Both input terminal blocks are keyed alike If Wiring connections for the 1791 IOBX and IOVX are shown in Tables 2 through 2 H Catalog Number 1794 IOBX Catalog Number 1794 IOVX Input Terminal Wiring Groups 0 and 1 TRM1 Groups 2 and 3 TRM2 Output Terminal Wiri
15. Rack 23 Rack 23 Rack 24 Rack 24 Rack 25 Rack 26 Rack 26 Rack 27 Rack 27 0 0 0 1 1 1 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 1 Rack 45 Rack 30 0 Rack 31 Rack 31 1 0 Rack 33 Rack 33 0 1 0 1 1 ka ka 91111111919 3 ss wx 1 1 Rack 37 Rack 37 0 1 1 10 1 3 16 a or Rack 42 1 0 0 0 1 0 3 4 Chapter 3 Configuring Your Block 1 0 1747 SN 1771 SN PLC 2 PLC 5 PLC 5 250 PLC 3 Rack Address Switch Position Rack Rack Rack Rack Rack Rack Number Number Number Number Number Number 6 1 es 31 T 1 o 2 o oj o o o o o o o Rack address 77 is an illegal configuration PLC 5 11 processors can scan rack 03 PLC 5 15 and PLC 5 20 processors can scan racks 01 03 PLC 5 25 and PLC 5 30 processors can scan racks 01 07 PLC 5 40 and PLC 5 40L processors can scan racks 01 17 PLC 5 60 and PLC 5 60L processors can scan racks 01 27 PLC 5 250 processors can scan racks 00 37 PLC 3 processors can scan racks 00 76 Each block uses 4 words of output image table memory and 4 words of input image table memory Each block
16. d remove the blown fuse 4 3 Chapter 4 Troubleshooting 4 Replace the blown fuse with a 5 0A slow blow fuse 5 Reinstall cover and secure with 5 screws removed in step 2 6 Reapply power to the module Summary In this chapter you learned what the LED indicators represent and how to interpret them 4 4 Appendix Specifications General Specifications External power Power Dissipation Thermal Dissipation Remote 1 0 Isolation Interconnect cable length PLC or SLC Cable requirements Dimensions Conductors Wire Size Category Environmental C onditions Operating Temperature Storage Temperature Relative Humidity Operating Non operating Range 18 to 26 4V dc 300mA 24V initial surge 2 0A for 10msec 25 2 Watts maximum 15 2 Watts typical 86 2 BTU hr maximum 51 9 BTU hr typical 850V dc transformer for 1 second RIO 57 6 10 000 cable feet 115 2K 5 000 cable feet 230 4K 2 500 cable feet RIO Belden 9463 Inches 6 15W x 13 0H x 1 72D Millimeters 156 21W x 334 0H 43 70 14 gauge 2mm stranded maximum 3 64 inch 1 2mm insulation maximum 2 32 to 140 F 0 to 60 C 40 to 1850F 40 to 85 C 5 to 95 noncondensing 5 to 80 noncondensing 1 Referto publication 1770 4 1 Programmable Controller Wiring and Grounding Guidelines Input Specifications Number of Inputs Input type On state voltage range On state input current Off state voltage Off state
17. e Cause Corrective Action Green Normal indication None required POWER 10 status on off green Of 0 24V power connected or hardware fault Check 24V dc power to block Solid green Normal indication module is communicating with the programmable controller None required f 0 CREE Check that power LED is on Make sure that 0 communication with adapter scanner etc proper number of blocks are configured Flashi Reset command or output disable bitfor SLC has Check program Correct as necessary ASI QUSE gt been issued by processor scanner or adapter SLC or programmable controller not in run mode Place in run mode Green Normal indication None ACTIVE green red Red Internal CPU fault Return module for repair Red One or more fuses are open Replace blown fuse FUSE red Normal indication None required Replacing a Fuse The block I O module has one fuse for each group of outputs To replace a fuse proceed as follows 1 Remove power to the block module ATTENTION Remove power to the block I O module before attempting to replace the fuse a Failure to remove power from the block module could cause injury or equipment damage due to possible unexpected operation a Failure to remove power from the module could cause module damage degradation of performance or injury 2 Remove the 5 screws securing the cover to the block I O module 3 Locate an
18. e Poland e Portugal e Puerto Rico e Qatar e Romania e Russia CIS e Saudi Arabia e Singapore e Slovakia e Slovenia e South Africa Republic e Spain e Sweden e Switzerland e Taiwan e Thailand e Turkey e United Arab Emirates e United Kingdom e United States e Uruguay e Venezuela e Yugoslavia Allen Bradley Headquarters 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Publication 1791 6 5 2 February 1995 955121 06 Supersedes publication 1791 6 5 2 August 1993 Copyright 1995 Allen Bradley Inc Printed in USA
19. iring connections 2 3 wiring terminals 1 2 1995 Allen Bradley Company Inc PLC is a registered trademark of Allen Bradley Company Inc PLC 2 is a registered trademark of Allen Bradley Company Inc PLC 3 is a registered trademark of Allen Bradley Company Inc PLC 5 is a registered trademark of Allen Bradley Company Inc PLC 5 250 is a registered trademark of Allen Bradley Company Inc SLC is a registered trademark of Allen Bradley Company Inc 63 Rockwell Automation Allen Bradley a Rockwell Automation Business has been helping its customers improve productivity and quality for more than 90 years We design manufacture and support a broad Allen Bradley range of automation products worldwide They include logic processors power and motion control devices operator interfaces sensors and a variety of software Rockwell is one of the worlds leading technology companies Worldwide representation J 227 Argentina Australia e Austria e Bahrain Belgium e Brazil e Bulgaria e Canada e Chile e China Colombia Costa Rica Croatia e Cyprus e Czech Republic e Denmark e Ecuador e Egypt e El Salvador e Finland France Germany e Greece e Guatemala e Honduras Hong Kong Hungary Iceland e India e Indonesia e Ireland e Israel e Italy e J ordan e Korea e Kuwait e Lebanon e Malaysia e Mexico Netherlands e New Zealand e Norway e Pakistan e Peru Philippines
20. is present Power green wht No customer voltage less than 2V CPU operating correctly Active green red CPU not running wht Communication not established red One ofthe 4 output fuses is open F d wht The I O status array is an 8 by 8 array of 64 LEDs capable of displaying the status of 32 inputs and 32 outputs at any one time Pushbuttons are provided to toggle the display between the lower 32 bits and the upper 32 bits Block I O is a complete I O interface that includes the functionality of the I O rack adapter power supply and I O modules in a single unit Simply connect sensors and actuators to the module and use the remote I O cable to connect the block I O to your programmable controller Figure 1 6 The 1791 IOBX block uses sinking inputs and sourcing outputs Chapter 1 Introducing Block 1 0 In sinking inputs the dc common is bussed on the block and the current is sourced from the field device The sourcing field device switches the hot side of the power supply bus causing current to flow through the sourcing device to the sinking input on the block Refer to Figure 1 2 Figure 1 2 Sinking Input Example Block 10 Field Device BR Device Sinking Input DC Power V Bus Common 10826 Sourcing outputs have the power bussed the block When the output is current is supplied to the field control device which sink
21. mt 1 14 32 XY mus 1 15 33 mutis 1815 Where X 2 Rack Number 1 2 3 Y Module Group 0 7 109354 3 7 Chapter 3 Configuring Your Block 1 0 Table 3 C 1791 IOBX Input Terminal Addressing for Groups 2 and 3 TRM2 Input Input Terminal Terminal Assignment Assignment Number Group 2 Address Number Group 3 Address GROUP No 5 Where X Rack Number 1 2 3 Y Module Group 0 7 109364 3 8 Chapter 3 Configuring Your Block 1 0 Table 3 D 1791 IOBX Output Terminal Addressing for Groups 0 and 1 TRM3 Output Assignment Group 1 Output Assignment Group 0 Terminal Number Terminal Number Program Address 0XY17 0 16 0 15 0 14 0 13 0xY12 0xY11 28 Output 10 0XY10 0 10 Joxwenn 9 oyo owwo Joxwenor 30 0 owo _ 12 Joxwenoo 31 fOutputos ovo 13 Output 05 144105 2 Outputog 20014 0 OX Y 1 04 33 Outputo3 2 15 owwos fOutputoz oyo 16 0 01 22 a 17 X Y 1 01 0 00 Where X 2 Rack Number 1 2 3 Y Module Group 0 7 109374 3 9 Chapter 3 Configuring Your Block 1 0 Table 3 E 1791 IOBX Output Terminal Addressing for Groups 2 and 3 Output Output Number Assignment Add
22. n in Figure 2 4 Do not attempt to wire any block in parallel The number of blocks used depends not only on the user requirements but also on the system used Figure 2 4 Series Connection for Block I O Using PLC 2 PLC 3 or PLC 5 Family Programmable Controllers To Programmable Controller or I O Scanner Module 11 0 Rack 11 0 Rack 11 0 Rack 11 0 Rack Install terminating resistor on last block 109294 2 13 Chapter 2 Installing Block 1 0 Extended Node Capability 2 14 Termination Resistor A termination resistor must be used on the last block in the series A 150 ohm and 82 ohm termination resistors are built into the unit To select the termination resistor position the switch to the desired position as shown in Figure 2 5 Figure 2 5 Installing the Termination Resistor Chassis 24VDC 24VDC TERMINATION BLU GND RESISTOR Position switch to connect termination resistor across 1 and 2 as follows 150 ohm position switch at top 82 ohm position switch at bottom OFF no resistor position switch in middle 109304 Shield cla 150 OHM OFF If this is the last remote I O adapter on the RIO link in a PLC system you must use a terminating resistor to terminate both ends of the remote I O link scanner end and last block end The size of the terminator is determined by the system configuration Older configurations can use a 150 ohm resistor a
23. nded node capability 2 14 F fuses removing and replacing 4 3 G group address 3 1 3 3 image table usage 3 5 indicator active 1 3 communication 1 3 fuse blown 1 3 power 1 3 indicators I O status array 1 3 locations 4 2 status 1 3 status reported 4 1 input sourcing 1 5 input terminal addressing IOBX groups 0 and 1 3 7 IOBX groups 2 and 3 3 8 IOVX groups 0 and 1 3 11 IOVX groups 2 and 3 3 12 inputs sinking 1 4 installation termination resistor 2 14 L last rack 3 1 3 3 LED indicators 4 1 M mounting clearance 2 3 0 output sinking 1 5 output terminal addressing IOBX groups 0 and 1 3 9 IOBX groups 2 and 3 3 10 IOVX groups 0 and 1 3 13 IOVX groups 2 and 3 3 14 outputs sourcing 1 4 P power requirements 2 12 processor restart lockout 3 1 4 2 R rack address 3 1 S sinking inputs 1 3 description 1 4 sourcing outputs 1 3 description 1 4 specifications A 1 switch configuration 1 3 rack address 1 3 termination resistor 1 3 switch assemblies 1 3 switch settings 3 3 T termination resistor installation 2 14 internal 3 1 troubleshooting chart 4 3 1 1 W wiring block designations 2 11 cable requirements 2 12 IOBX input terminals 0 and 1 2 4 2 and 3 2 5 IOBX output terminals 0 and 1 2 6 2 and 3 2 7 IOVX input terminals 0 and 1 2 8 2 and 3 2 9 IOVX output terminals 0 and 1 2 10 2 and 3 2 11 remote I O link 2 12 w
24. ng Table 2 C page 2 6 Groups 0 and 1 TRM3 Table 2 G page 2 10 Table 2 D page 2 7 Groups 2 and 3 Table 2 H page 2 11 Remote I O link wiring connections are shown in Figure 2 3 Input Terminal Wiring Table 2 page 2 4 Table 2 B page 2 5 Groups 0 and 1 TRM1 Groups 2 and 3 TRM2 Table 2 E page 2 8 able 2 F page 2 9 Groups 0 and 1 TRM3 Groups 2 and 3 TRM4 2 3 Chapter 2 Installing Block 1 0 Table 2 A 1791 IOBX Input Terminal Wiring for Groups 0 and 1 TRM1 for PLC Family Controllers and SLC Processors Input Assignment Input Assignment T Group 0 Group 1 I 19 4 5 6 in n npu 7 5 8 n n 10 uta C n n n n n n 18 C 36 C m 7 lt 52 Common 36 37 124904 2 4 Chapter 2 Installing Block 1 0 Table 2 B 1791 IOBX Input Terminal Wiring for Groups 2 and 3 TRM2 for PLC Family Programmable Controllers and SLC Processors Input Assignment Input Assignment Terminal Group 2 Terminal Group 3 Number Number SLC Common C ommon D n put 02 I 2 J 1 5 1 nput 05 nput 05 25 8 9 27 input07 30 12 nput 12 put
25. nication 1 not established flashing when programmable controller is in PROG mode FUSE Indicator indicates the status of the 4 output fuses off if all 4 fuses are intact red if any one of the fuses opens The I O status array is an 8 by 8 array of 64 LEDs capable of displaying the status of 32 inputs and 32 outputs at any one time Pushbuttons are provided to toggle the display between the lower 32 bits and the upper 32 bits Refer to Table 4 A below for status indications reported by the indicators 4 1 Chapter 4 Troubleshooting 4 2 Figure 4 1 Indicators on the 1791 IOBX and IOVX Block I O Modules PLC labels shown 81716 514 3 211 CONFIGURATION WITCHES POWER 1 ___ comm C FusE DISPLAY SELECT INPUT OUTPUT LED O GROUP 0 1 2 3 ON 2 OUTPUT 00 01 02 03 04 05 06 07 00 01 02 03 04 05 06 07 10 1 12 13 14 15 16 17 00 01 02 03 04 05 06 07 00 01 02 03 04 05 06 07 indicates LED off lower 32 bits are displayed DISPLAY SELECT XX indicates LED on upper 32 bits are displayed Press Input and Output pushbuttons simultaneously to reset Processor Restart Lockout 10943 1 Chapter 4 Troubleshooting Table 4 A Troubleshooting Chart Indication Probabl
26. notes to alert you to possible injury to people or damage to equipment under specific circumstances ATTENTION Tells readers where people may be hurt if procedures are not followed properly ATTENTION Tells readers where machinery may be damaged or economic loss can occur if procedures are not followed properly Attention helps you a Identify a hazard a Avoid the hazard Recognize the consequences Important We recommend you frequently backup your application programs on appropriate storage medium to avoid possible data loss Purpose of Manual Audience Vocabulary Manual Organization Chapter Preface Using This Manual This manual shows you how to use your Block I O with an Allen Bradley programmable controller It helps you install program and a troubleshoot your module You must be able to program and operate an Allen Bradley programmable controller PLC to make efficient use of Block I O modules We assume that you know how to do this in this manual If you do not refer to the appropriate PLC programming and operations manual before you attempt to program this module In this manual we refer to the block module as the block or the module a the programmable controller as the controller or processor This manual is divided into 4 chapters The following chart shows each chapter with its corresponding title and brief overview of the topics covered in that chapter
27. occupies 1 2 rack of data table with 2 blocks comprising 1 logical rack Image table usage for one assigned rack number is shown in Figure 3 3 An example of image table usage is shown in Figure 3 4 Figure 3 3 10 Image Table for One Assigned Rack Number Input Image 17 10 7 0 0 1 2 3 4 5 6 7 Output Image 17 10 7 0 0 1 2 2 179140 or 179140 per rack 3 1st 1 2 rack module group 0 3 4 2nd 1 2 rack module group 4 7 5 6 1 109334 3 5 Chapter 3 Configuring Your Block 1 0 Figure 3 4 Input Table Usage Example for One Starting I O Group with 1791 IOBX and Example 11 s of I O d Output Bit 10 Rack Number 10 Group Number s e s n SO om e 1 epe m pu pps wr e e ro nde Switch 6 ZOFF Input Image Output Image 114 115 Starting 09 ns een cm e s e p o Esp s s gt os ofe up e os s Input Image 109344 3 6 Chapter 3 Configuring Your Block 1 0 Table 3 B 1791 IOBX Input Terminal Addressing for Groups 0 and 1 1 Input Assignment Group 0 Input Assignment Group 1 Terminal Number Program Terminal Address Number Program Address o n mum 1 12 30 nul mus 1 13 31 nut mun 0M
28. rce output channels The 1791 IOVX 24V module has 64 source input channels and 64 sink output channels Complete specifications for these modules are contained in Appendix A The blocks are compatible with PLC 2 PLC 3 and PLC 5 family programmable controllers and the SLC 500 modular controllers When used with PLC 2 family programmable controllers a sub scanner module is used to communicate with the blocks When used with PLC 3 and PLC 5 family programmable controllers they can be connected directly to the controller or to a scanner module When used with SLC 500 controllers a 1747 SN remote I O scanner is used to communicate with the blocks you must use a 1775 S5 or SR5 scanner module Do not use ATTENTION When using PLC 3 programmable controllers 1775 SR S4A or 54 scanner modules Note The 1791 IOBX and IOVX block modules are not compatible with the 1747 DSN scanner module Connections are made to removable terminal blocks mounted on the sides of the block Physical features of the block I O are shown in Figure 1 1 Chapter 1 Introducing Block 1 0 Figure 1 1 Major Features of the 1791 IOBX and IOVX Block I O Modules shown 8 7 6 5 4 3 211 Configuration Switches Rack Address SWITCHES on top of unit Switch Input Output Status LED a Array Power Active Comm and Fuse DISPLAY LED Indicators Display Select Pushbuttons 1791 IOBX
29. ress Number Assignment Address 1 2 2 17 3 OX Y 42 16 4 OX Y 42 15 5 0X Y 2 14 6 OX Y 42 13 7 0X Y 2 12 8 OX Y 42 11 9 Output 11 0X Y 3 11 28 Output 10 0X Y 2 10 10 Output 10 4310 2 Output 07 OX Y 42 07 11 Output 07 OX Y 3 07 30 Outputos OX Y 2 06 12 Output 06 OX Y 3 06 31 Output 5 OX Y 2 05 13 Output 05 OX Y 43 05 32 Output04 _ OX Y 2 04 14 Output 04 Y 3 04 33 Output 03 0X Y 2 03 15 owwos fOutputoz 0X Y 2 02 16 3 2 01 17 2 00 18 GROUP 19 Where X 2 Rack Number 1 2 3 Y Module Group 0 7 109384 3 10 Chapter 3 Configuring Your Block 1 0 Table 3 F 17914 Input Terminal Addressing for Groups 0 and 1 TRM1 mun 1XY11 29 van 1 12 30 inputi mam mus 1 13 31 nut mun 1 14 32 2215 mei 1 15 33 mutis 1815 Input Input Terminal Terminal Number i Ta Number Address 2 n 1 00 20 1X Y 1 00 3 n 1 01 21 1X Y 1 01 4 n 1 02 22 1X Y 1 02 5 n 1xY03 23 1X Y 1 03 6 n 1 04 24 1X Y 1 04 7 n 1 05 25 1X Y 1 05 8 n 1 06 26 1X Y 1 06 9 nput 07 1XY07 2 1 07 Dm 10 nput 10 1 10 28 1X Y 1 10 n Where X 2 Rack Number 1 2 3 Y Module Group 0 7 109394 3 1 Chapter 3 Configu
30. ring Your Block 1 0 Table 3 0 1791 IOVX Input Terminal Addressing for Groups 2 and 3 TRM2 Input Input N Terminal Terminal Assignment Assignment Number Group 2 Address Number Group 3 Address GROUP No Where X 2 Rack Number 1 2 3 Y Module Group 0 7 109404 3 12 Chapter 3 Configuring Your Block 1 0 Table 3 H 17914 Output Terminal Addressing for Groups 0 and 1 TRM3 Output Assignment Group 1 Output p Assignment OUTPUT Group 0 Terminal Number Terminal Number 0XY17 0 16 0 15 0 14 0 13 0xY12 0xY11 28 Output 10 0XY10 0 10 Joxwenn 9 oyo owwo Joxwenor 30 0 owo _ 12 Joxwenoo 31 fOutputos ovo 13 Output 05 144105 2 Outputog 20014 0 OX Y 1 04 33 Outputo3 2 15 owwos fOutputoz oyo 16 0 01 22 a 17 X Y 1 01 0 00 Where X 2 Rack Number 1 2 3 Y Module Group 0 7 109414 3 13 Chapter 3 Configuring Your Block 1 0 Table 3 1 17914 Output Terminal Addressing for Groups 2 and 3 Output Output 11 Output 07 0X Y 3 07 30 Output 06 0X Y 2 06 Number Assignment Address Number Assignment Address 1 2 2 17 3 OX Y 42 16 4 OX Y 42 15 5 0X Y 2 14 6 OX Y 42 13 7 0X Y 2 12 8 OX Y
31. s the current The field circuit and the equipment remain at ground potential until the output is turned on Refer to Figure 1 3 Note The outputs must be externally fused to protect the device output against overcurrent or short circuit conditions Figure 1 3 Sourcing Output Example Block 1 0 DC Power Supply 10827 The 1791 IOVX block uses sourcing inputs and sinking outputs Chapter 1 Introducing Block 1 0 In sourcing input modules Figure 1 4 the V on circuits is bussed on the module supplying sourcing the current for each input circuit The field device switches the circuit to the common side of the power supply sinking the circuit and causing current to flow from the module s input Figure 1 4 Sourcing Input Example Block 1 0 W DC Power Supply mw Device dc Common Bus 10917 1 sinking outputs Figure 1 5 the current flow is reversed dc common is bussed on the module and the current is sourced from the field device being actuated When an output is turned on the output switch in the module sinks the circuit causing current to flow from the V bus through the field device to the module Note The outputs must be externally fused to protect the device output against overcurrent or short circuit conditions Figure 1 5 Sinking Output Example Block DC Power Supply Common 109184 1 5 Chapter 1 Introducing Block 1 0 Block I O f
32. t both ends With newer devices that can support it you can use an 82 ohm termination resistor at both ends The 82 ohm terminators provide extended node capability which allows you to have up to 32 physical devices on the RIO link The number of logical racks capable of being addressed by the scanner is not affected ATTENTION Devices that are operating at 230 4K baud must have 82 ohm terminators in place for proper operation Compatibility 01 17711 0 Products with Extended Node Operation Fusing Summary Chapter 2 Installing Block 1 0 Certain products are not compatible with extended node capabilities obtained with the use of 82 ohm terminators The following table lists those products that are not compatible Device Series Scanners 1771 SN All 1772 SD All 1772 SD2 All 1775 6581 All 1775 S4A All 1775 5481 All Adapters 1771 AS 1771 ASB Series A 1771 DCM All Miscellaneous 1771 AF 1771 1 All 1 When using PLC 3 programmable controllers you must use a 1775 55 or SR5 scanner module Do not use 1775 58 54 or S4B scanner modules 1791 high density block I O modules 64 and 128 input output have internal fusing Each group of 16 output points is protected by a 5 0A fuse These fuses protect the user output devices They do not protect each individual output from overload It is recommended that individual outputs be fused externally to protect the individual output circuit Catalog Number
33. tput00 Output 00 3 vocc VDC C wo voc 31 N Field SSH Device Device Field Device 12494 Table 2 1 Wiring Block Designations Connector Description Blue wire RIO Clear wire RIO Shield Shield RIO Remote 1 0 Connector Chass GND Chassis Grond 24vDC RET 24VDC 24V dc Input Terminals 1 thru 37 See Tables Output Terminals 1 thru 37 See Tables 2 11 Chapter 2 Installing Block Power Supply Requirements An external 24V dc 10 25 power supply is required to power the block Total current required to power the block is equal to 300mA In addition the external power supply should have current limiting capabilities The voltage range must not exceed 18 0 26 4V dc Wiring Requirements Wiring cable requirements are shown in Table 2 J Table 2 J Acceptable Wiring Cables for Block I O Connection Use Cable Type With PLC 2 PLC 3 PLC 5 family programmable Remote 0 Link Belden 9463 controllers and SLC controllers Up to 14AWG 2mm Stranded Input and Output wiring with 3 64 inch 1 2mm insulation Figure 10 Link Wiring GROUP No GROUP No Chassid 24VDC TERMINATION Shield BLU 24VDC RESISTOR 150 OHM 82 OHM omes 8 Clear wire ES 10928 1 2 12 Remote Link Wiring Chapter 2 Installing Block 1 0 Blocks must be wired in series as show
34. unctions exactly like any Allen Bradley remote I O product Input and output data is scanned asynchronously and transferred back and forth between the block and the controller input and output image table You connect the block I O to your remote I O link as you would any other device The block looks like a 1 2 I O rack to the processor and uses 4 words of input image table memory and 4 words of output image table memory The block is addressed directly on the remote I O link Figure 1 6 Block I O Connection PLC System Blocks are daisy chained to a programmable controller or scanner Programmable Controller or Scanner Block 1 0 each block is 1 2 1 0 rack 10915 1 In this chapter you learned what block I O is its features and how it functions Chapter Objectives Pre installation Considerations Installing the Block Installing Block I O In this chapter you will learn how to mount the block how to connect the remote I O link how to connect the input and output wiring to the block and how to terminate the remote I O link Before installation you must determine the number of blocks desired the total distance of the installation transmission rate desired Mounting dimensions for the block I O module are shown in Figure 2 1 Mount the blocks horizontally with a minimum of 2 between blocks This air gap is necessary to maintain proper cooling air flow through the block
35. up the module s communications if the power has been cycled to either the module or the programmable controller Press Input and Output pushbuttons simultaneously to reset PRL a last rack used to identify if the module contains the highest numbered I O group for the associated rack number I O group address used to identify which module group 0 3 or 4 7 the module should assign to its inputs outputs rack address used to select the rack address of the module RIO termination resistor used to connect an internal resistor 82 ohm 150 ohm or no resistor across LINE 1 and 2 on the remote I O terminals These switches are all accessible on the front or top of the module as shown in Figure 3 1 3 1 Chapter 3 Configuring Your Block 1 0 Configuration S witch Rack Address S witch Termination Resistor Switch 3 2 Figure 3 1 Switch Setting Locations 1791 IOBX shown 817 6 5 S So SS RACK ADDR POWER ACTIVE COMM FUSE M 00 01 57 6 5 OFF OFF ON JOFF OFF ON ON ON
36. we pH KH RR REPE E ers Chapter 2 Chapter Objectives Pre installation Considerations Installing the Block Connecting Remote Link Wiring Extended Node Compatibility of 1771 I O Products with Extended Node Operation lano SUMMA Chapter 3 Chapter breed bah RR Setting the Configuration Switches SUMMALY E d ER S ER Chapter 4 Chapter Objectives cs esd emere Ree INGICALOTS TCR Replacing a Fuse Nuntia ET Appendix A Specifications awe gas esp waqaq Table of Contents This page left intentionally blank Introducing Block I O Chapter Objectives In this chapter you will learn what block I O is its features and how it functions General Description Block I O consists of small self contained remote I O devices complete with power supply programmable controller interface input output connections and signal conditioning circuitry The 1791 IOBX 24V dc module has 64 sink input channels and 64 sou
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