1791-6.5.8, Block I/O User Manual
Contents
1. 24 Chapter 2 Installing Block I O Table 2 B Wiring Block Designations 1791 IOBA 1791 IOBB Connector Remote I O Connector Blue wire RIO Blue wire RIO Clear wire RIO Clear wire RIO COM DH 485 Common COM DH 485 Common Chassis ground 24 4 DCN CN Connector Output supply Power Supply Requirements An external 24V dc power supply is required to power the block Total current required to power the block is equal to 200mA plus an inrush of 5 5A for 10usec for each block The supply must be able to source an additional 100mA plus an inrush current of 400mA when a peripheral is connected In addition the external power supply should have current limiting capabilities The voltage range must not exceed 20 5 27 6 dc 2 5 Chapter 2 Installing Block I O 2 6 EEL Clear wire Blue wire Shield wire Wiring Requirements Table 2 C shows the wiring cable requirements for the 1791 IOBA B and 1791 IOBB B modules Table 2 C Acceptable Wiring Cables for Block I O Connection PLC 2 PLC 3 PLC 5 family programmable controllers and SLC controllers Remote I O Link or DIO Link Belden 9463 DH 485 Data Link Belden 9842 SLC controllers only Up to 14AWG Stranded with 3 64 A inch insulation Input and Output wiring Figure 2 5 Remote I O Link Wiring Tighten screw to clamp wire Clear 10832 1 Remote 1 0 Link or Distributed Link Wiring To Programm2. Off Open PLC 5 25 processors can scan racks 01 07 PLC 5 40 and 5 60 processors can scan racks 01 17 Each block uses 2 words of output image table memory and 2 words of input image table memory Each block occupies 1 4 rack of data table with 4 blocks comprising 1 logical rack Image table usage for one assigned rack number is shown in Figure 3 2 IOBA and Figure 3 4 IOBB An example of image table usage is shown in Figure 3 3 IOBA and Figure 3 5 IOBB 3 3 Chapter 3 Contiguring Your Block I O for PLC Family Programmable Controllers Figure 3 2 1 0 Image Table for One Assigned Rack Number with 1791 IOBA B Input Image 17 10 7 0 Reserved Reserved Reserved Reserved NO oP Output Image 17 10 7 0 Remi Red NO of For 1791 1 7 0 input and 7 0 output image bits 10837 1 Figure 3 3 Input Table Usage Example for One Starting I O Group with 1791 IOBA B PLC 2 Example 1 1 0 00 PLC 3 PLC 5 PLC 5 250 Example 1 0 00 Type of I O Type of I O 1 Input F Input 0 Output Bit O Output Bit Rack Number Starting 111 76543210 Input Image Group Number I O Rack Number Group Number m Group Block Data UM cna mi mme Block Data 10838 1 3 4 Chapter 3 Configuring Your Block I O for PLC Family Pro
3. 1 2 Installing Block 0 2 1 Chapter 2 1 Pre installation Considerations 2 1 Installing the Block I O 2 3 Connecting Wiring 2 3 Remote 1 0 Link or Distributed I O Link Wiring 27 Extended Node 2 9 Compatibility of 1771 I O Products with Extended Node Numbers 2 10 Configuring Your Block I O for PLC Family Programmable Controllers 3 1 Chapter 34 Setting the Configuration 34 Configuring Your Block 1 0 for SLC Controllers 4 1 Chapter 4 1 Setting the Configuration 4 1 Addressing the Blocks Using SLC Controllers 4 3 Troubleshooting 5 1 Chapter 5 1 LED lc o ceux E 5 1 Specifications A 1 Purpose of Manual Audience Vocabulary Manual Organization Chapter Introducing Block I O Description of the modules including general and hardware features 1 Preface Using This Manual This manual shows you how to use your block I O wi
4. 2 shows the dimensions of the required air gap Figure 2 2 Clearance Required for Block I O Modules 51mm 10830 1 Connecting Wiring Connections to the block I O module are made to the removable connectors which plug into the front of the block The connector blocks are keyed to prevent incorrect insertion and are secured by screws Wiring for the block is shown in Figure 2 3 and Figure 2 4 Remote I O wiring connections are shown in Figure 2 5 2 3 Chapter 2 Installing Block I O Figure 2 3 Input and Output Connections for the 1791 IOBA B 8 OUTPUTS 8 INPUTS 2 SHD 1 B A COM 24 DCN CG VDC O0 01 02 O4 O5 O6 O7 M 15 6 17 COM Mle 8 Eq EE TE EE Remote DH 485 Link for SLC see Figure 2 5 only Input Common 24V dc Neutral Chassis Ground Output Vdc OUTPUT 0 INPUT 7 OUTPUT 1 INPUT 6 OUTPUT 2 INPUT 5 OUTPUT 3 INPUT 4 OUTPUT 4 INPUT 3 OUTPUT 5 INPUT 2 OUTPUT 6 INPUT 1 OUTPUT 7 INPUT 0 10831 1 Figure 2 4 Input Output Wiring Connections for the 1791 IOBB B 6 OUTPUTS 10 INPUTS 2 SHD 1 B 24 DCN CG 00 01 02 03 0405 10 2 M 6 1 19 COM 000000000 LLLLLLILLLILLIILII Remote DH 485 Link for SLC only Input Common cone INPUT 9 dc Neutral INPUT 8 Chassis Ground INPUT 7 INPUT 6 Output Vdc INPUT 5 OUTPUT 0 INPUT 4 OUTPUT 1 INPUT 3 OUTPUT 2 OUTPUT 3 INPUT 2 OUTPUT 4 INPUT 1 OUTPUT 5 INPUT 0
5. On Closed 5 On Closed On Closed 6 On Closed On Closed 7 Off Open On Closed 3 2 Chapter 3 Configuring Your Block I O for PLC Family Programmable Controllers Table 3 B Addressing PLC 3 and PLC 5 250 Processors Rack Switch Number Rack Switch Number Number 3 4 5 6 Number 3 4 5 6 2 Off Open 3 Off Open 4 Off Open 5 Off Open On Closed Off Open On Closed 5 Off Open Closed Off Open Off Open 6 On Closed Off Open Off Open On Closed EN On Closed Off Open Off Open Off Open 7 Off Open Off Open Off Open On Closed Off Open Off Open Off Open Off Open Table 3 C Addressing PLC 5 I O Processors Rack Switch Number Rack Switch Number Number 3 4 5 Number 3 4 5 6 01 Off Open On Closed On Closed IE On Closed On Closed On Closed Off Open On Closed Off Open Off Open On Closed On Closed HR Off Open On Closed On Closed Off Open Off Open On Closed Off Open PLC 5 15 processors can scan racks 01 03 04 o Closed On Closed Off Open Off Open Off Open 05 Off Open On Closed Off Open On Closed o5 Off Open On Closed Off Open Off Open 06 On Closed Off Open Off Open On Closed E On Closed Off Open Off Open Off Open 07 Off Open Off Open Off Open
6. an additional 100mA plus an inrush current of 400mA when a peripheral is connected 32 to 131 F 0 to 55 C 40 to 185 F 40 to 85 C 5 to 95 noncondensing 14 gauge stranded maximum 3 64 inch insulation maximum IOBA B 13 94 Watts maximum 9 62 Watts typical IOBB B 13 05 Watts maximum 8 92 Watts typical IOBAJB 47 7 BTU hr maximum 32 9 BTU hr typical IOBB B 44 6 BTU hr maximum 30 5 BTU hr typical 850V dc transformer for 1 second 850V dc optocoupler for 1 second RIO PLC 57 6K 10 000 cable feet 115 2K 5 000 cable feet 230 4K 2 500 cable feet SLC 230 4 2 500 cable feet DH 485 4000 ft 1219 meters RIO DIO Belden 9463 DH 485 Belden 9842 Input type Input voltage range On state input current On state input voltage Off state voltage Off state current Turn On time Turn Off time Sinking 20 5 to 27 6V dc 6 5mA minimum 20 5V dc 20 5V dc minimum 6 0V dc maximum 1 5mA dc maximum 1 5msec maximum 1 0msec maximum A 1 Appendix A Specifications 1791 IOBA B Output Specifications Number of outputs Output type Source Rated output voltage 10 to 30V de Maximum on state voltage drop 1 5V dc 25 C Maximum on state current 0 5A Minimum on state current 15mA Surge Current 3 0A for 10ms maximum 1 pulse per second max Off state voltage 30V dc maximum Off state leakage current 0 5mA maximum Turn on time 0 5ms maximum Turn off t
7. 0 cable feet 10 000 cable feet 1772 SD 1772 SD2 16 blocks channel 64 blocks scanner with 150 ohm terminator Any PLC 3 scanner module 5 000 cable feet PLC 3 family 10 000 cable feet 1775 55 or SR5 module 32 blocks channel 64 blocks scanner 5 000 cable feet with 82 ohm terminator 2 000 cable feet PLC 5 15 12 blocks with 150 ohm terminator 10 000 cable feet 16 blocks with 150 ohm terminator PLC 5 family 28 blocks with 82 ohm terminator 10 000 capis tod 16 blocks channel 28 blocks per 10 000 cable feet PLC 5 30 processor with 150 ohm terminator 5 000 cable feet 2 1 Chapter 2 Installing Block I O When using pm Maximum Capacity A 10 000 cable feet PLC 5 family continued PLC 5 30 5 000 cable feet 2 500 cable feet 16 blocks channel 32 blocks per 10000 cable leet processor with 150 ohm terminator 445 5 000 cable feet PLC 5 40L PLC 5 60L 57 6 10 000 cable feet 32 blocks channel 60 blocks per 115 2K 5 000 cable feet processor with 82 ohm terminator 2 500 cable feet 16 blocks channel 60 blocks per 57 6K 10000956188 processor with 150 ohm terminator 445 ok 5 000 cable feet PLC 5 40 PLC 5 60 57 6K 10 000 cable feet 32 blocks channel 60 blocks per processor with 82 ohm terminator Maie Spore es 230 4K 2 500 cable feet 16 blocks channel 32 57 6K 10 000 cable feet blocks scanner 64 blocks 2 scanners with 150 ohm terminato
8. ALLEN BRADLEY Wy Block I O Cat No 1791 IOBA and IOBB Series B 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 notes to alert you to pos
9. a list of available block I O modules Table P A Types of Block I O Catalog Number Description Publication Number 1791 IOBA 8 sinking inputs 8 sourcing outputs 1791 6 5 8 1791 IOBB 10 sinking inputs 6 sourcing outputs 1791 IOVA 8 sourcing inputs 8 sinking outputs oe 1791 6 5 6 1791 IOVB 10 sourcing inputs 6 sinking outputs 1791 IOBW 32 sinking inputs 32 sourcing outputs A 1791 6 5 7 1791 IOVW 32 sourcing inputs 32 sinking outputs 1791 IOBX 64 sinking inputs 64 sourcing outputs 1791 6 5 2 1791 IOVX 64 sourcing inputs 64 sinking outputs This publication covers the 1791 IOBA B and IOBB B block I O modules The 1791 IOB A B has 8 inputs and 8 outputs the 1791 IOBB B has 10 inputs and 6 outputs In all other respects they are identical For a list of publications with information on Allen Bradley programmable controller products consult our publication index 50499 Chapter Objectives General Description DH 485 Port Introducing Block I O In this chapter you will learn what block I O is its features and how it functions 1791 IOBA B and IOBB B block I O modules are small self contained remote I O devices complete with power supply programmable controller interface input output connections and signal conditioning circuitry The 1791 IOBA B has 8 inputs and 8 outputs the 1791 IOBB B has 10 inputs and 6 outputs In all other aspects they are identical The blocks are compatib
10. able Controller or I O Scanner Module Chapter 2 Installing Block I O Blocks must be wired in series as shown in Figure 2 6 or Figure 2 7 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 Refer to Table 2 A page 2 1 for maximum block usage for individual systems Figure 2 6 Series Connection for Block I O Using PLC 2 PLC 3 or PLC 5 Family Programmable Controllers lt P lt 00 ll ER 1 1 0 Rack wes SVG w EYE 7 SSS Ur E 11 0 ie Install terminating resistor on last block 2 7 Chapter 2 Installing Block I O Figure 2 7 Series Configurations for Block I O Using the SLC Programmable Controller To 1747 DSN Lu Ko 7 1747 DSN Scanner Module aS EET u LY amp Install terminating resistor on last block To 1747 SN Up to 30 blocks with Scanner Module SLC 5 02 Install terminating resistor on last block 16 Install terminating resistor Up to 16 blocks with on last block SLC 5 02 10834 1 2 8 Extended Node Capability Chapter 2 Installing Block I O Termination Resistor A termination resistor must be installed on the last block in a series Connect the resistor as shown in Figure 2 8 Use the resistor as identified in Table 2 D Figure 2 8 Installing the Termination Resistor Tighten screw to clamp wires and termination resistor Connect t
11. ation for aid in troubleshooting DH 485 Port A plug in DH 485 data port is provided for use with the SLC controller How Block 1 0 Fits in a PLC Block I O is a complete I O interface that includes the functionality of the System I O rack adapter power supply and I O modules in a single unit Connect sensors and actuators to the module and use the remote I O cable to connect the block I O to your programmable controller as shown in chapter 2 The block uses sinking inputs and sourcing outputs In sinking inputs Figure 1 2 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 Figure 1 2 Sinking Input Example V Field Device DC Power Supply Block I O Sinking Input COM 10826 1 Chapter 1 Introducing Block 1 0 Sourcing outputs Figure 1 3 have the power bussed in the block When the output is on current is supplied to the field control device which sinks the current The field circuit and the equipment remain at ground potential until the output is turned on Figure 1 3 Sourcing Output Example Block I O DC Power Supply Field Device Field Device 10827 1 You connect the block I O to your remote I O link as you would any other device Figure 1 4 The blo
12. aud rate last state or reset DH 485 termination These switches are accessible by opening the door on the left side of the module Figure 4 1 4 1 Chapter 4 Configuring Your Block I O for SLC Controllers Figure 4 1 Switch Settings for Block 1 0 when used with the SLC 500 Controller Guoan VE eae COMM POWER O OOODdO O dQ s 6 Hold Last State 4 ong Hold last state On 0 1 7 100000 to 111000 mE we i 0 Switch as viewed from this end Terminate On 0 Off 1 On Closed 0 Bali 10839 1 Block Switches Not Used Addresses 1 6 4 2 Chapter 4 Configuring Your Block 1 0 for SLC Controllers Table 4 A Addressing SLC 500 Controllers Block Switch S1 Positions Block Switch S1 Positions ie MOI ET puresa 1 2 4 010 On 0 On 0 On Of 0 On 0 Off 1 On 0 Off 1 On 0 5 Of 1 OF 1 On 0 On 0 On 0 cm On 0 Off 1 On 0 Off 1 On 0 EUN 15 On 0 16 Invalid Addressing the Blocks The SLC controller communicates with the block I O using a Distributed Using SLC Controllers I O Scanner module cat no 1747 DSN or an RIO Scanner module cat no 1747 SN The 1747 DSN scanner can address up to 7 blocks using an SLC 5 01 Controller and up to 30 blocks using an SLC 5 02 Controlle
13. ck looks like a 1 4 I O rack to the processor and uses 2 words of input image table memory and 2 words of output image table memory The block is addressed directly on the remote I O link Block I O functions 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 Figure 1 4 Block I O Connection in a PLC System Blocks are daisy chained to a programmable controller or a scanner Programmable Controller or Scanner Block 1 0 each block is 1 4 I O rack 10828 1 1 3 Installing Block I O Chapter Objectives In this chapter you will learn how to mount the block connect the remote I O link connect the input and output wiring to the block and terminate the remote I O link Pre installation Before installation you must determine Considerations the number of blocks desired the total distance of the installation transmission rate desired if external fuses are required Acceptable combinations are shown in Table 2 A Table 2 A Acceptable Combinations of Processor and Block 1 0 Baud Rate Maximum When using and Maximum Capacity Used Network Distance 57 6K 10 000 cable feet 1771 SN 16 blocks with 150 ohm terminator 5 000 cable feet PLC 2 family 16 blocks channel 28 blocks scanner 57 6K 10 000 cable feet with 150 ohm terminator 115 2K 5 00
14. ermination resistor across terminals 1 2 10835 1 Table 2 0 Terminator Requirements System Terminator Resistor PLC 2 PLC 3 PLC 5 family SLC 500 family 150 ohm 57 6K and 115 2K baud 82 ohm 230 4K baud If this is the last remote I O adapter on the remote I O 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 at 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 remote I O 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 2 9 Chapter 2 Installing Block I O Compatibility of 1771 I O Certain products are not compatible with extended node capabilities Products with Extended obtained with the use of 82 ohm terminators Table 2 E lists those products Node Numbers that are not compatible Table 2 E Non compatible Products Device Series Scanners 1771 SN All 1772 SD All 1772 SD2 All 1775 SR All 1775 S4A All 1775 S4B All Adapters 1771 AS All TASB Series A 1771 DCM All Misce
15. grammable Controllers Figure 3 4 Image Table for One Assigned Rack Number with 1791 IOBB B Input Image 17 10 7 0 Reserved Reserved Reserved NOP 1 Rack Output Image 17 10 7 0 o Resno 1 Resne 5 Reed 1791 IOBB B 11 0 input and 5 0 output image bits Figure 3 5 Input Table Usage Example for One Starting I O Group with 1791 IOBB B PLC 2 Example 1 1 2 00 PLC 3 PLC 5 PLC 5 250 Example 12 00 Type of I O i Type of I O J ds I O Bit I O Bit 0 Output O Output Rack Number Group Number Rack Number Group Number Input Image Sag nal Reeve m mrjejsja s 2 Group Block Data e TUE Reseved 843210 Block Data 3 5 Chapter Objectives Setting the Configuration Switches Configuring Your Block 1 0 for SLC Controllers In this chapter you will learn how to configure your block I O when used with SLC family controllers This includes the following setting the configuration switches addressing the block I O Refer to publication 1747 NM004 Series A Distributed I O Scanner and publication 1747 NM0095 Series A RIO Scanner for complete information on switch settings and addressing of the block I O Each block I O module has two 6 position DIP switches for setting block address transmission b
16. ime 1ms maximum 1791 IOBB B Input Specifications Number of Inputs 10 Input type Sinking Input voltage 20 5 to 27 6V dc On state input voltage 20 5V dc minimum On state input current 6 5mA minimum 20 5V dc Off state voltage 6 00V dc maximum Off state current 1 5mA dc maximum Turn On time 1 5msec maximum Turn Off time 1 0msec maximum A 2 Appendix A Specifications 1791 IOBB B Output Specifications Number of outputs Output type Source Rated output voltage 10 to 30V dc Maximum on state voltage drop 1 5V dc 25 C Maximum on state current 0 5A Minimum on state current 15mA Surge Current maximum 3 0A for 10ms max 1 pulse per second max Off state voltage 30V dc maximum Off state leakage current 0 5mA maximum Turn on time 0 5ms maximum Turn off time 1ms maximum B block addressing SLC 4 3 C compatibility extended node numbers 2 10 configuration switches 3 1 SLC 4 1 connecting block I O in a PLC system 1 3 connecting wiring 2 3 1791 IOBA 2 4 1791 IOBB 2 4 D description P 2 1 1 DH 485 port 1 2 E extended node capability 2 9 F features 1 1 I O rack addressing PLC 2 family 3 2 PLC 3 and PLC 5 250 3 3 PLC 5 3 3 image table usage 3 3 1791 IOBA 3 4 1791 IOBB 3 5 L LED indicators 5 1 Index mounting dimensions 2 3 P power supply requirements 2 5 R related publications _P 2 remote I O lin
17. k connector 1 2 remote I O link wiring _2 7 S series connections PLC 2 PLC 3 and PLC 5 2 7 SLC 2 8 sinking inputs 1 2 description 1 2 sourcing outputs 1 2 description 1 3 specifications 1 status indicators 1 2 switch assemblies 1 2 T termination resistor 2 9 troubleshooting chart 5 2 Types of block I O 2 types of block I O 1 1 W wiring cable 2 6 wiring connections definitions 2 5 ALLEN BRADLEY ROCKWELL INTERNATIONAL COMPANY With offices in major cities worldwide WORLD EUROPE MIDDLE HEADQUARTERS EAST AFRICA Allen Bradley HEADQUARTERS 1201 South Second Street Allen Bradley Europe B V Milwaukee WI 53204 USA Amsterdamseweg 15 Tel 1 414 382 2000 1422 AC Uithoorn Telex 43 11 016 The Netherlands FAX 1 414 382 4444 Tel 31 2975 43500 Telex 844 18042 FAX 31 2975 60222 Publication 1791 6 5 8 April 1992 Supersedes publication 1791 6 5 8 March 1992 As a subsidiary of Rockwell International one of the world s largest technology companies Allen Bradley meets today s challenges of industrial automation with over 85 years of practical plant floor experience More than 11 000 employees throughout the world design manufacture and apply a wide range of control and automation products and supporting services to help our customers continuously improve quality productivity and time to market These products and services not only control individ
18. le with PLC 29 PLC 3 and PLC 5 family programmable controllers and the SLC 500 modular controllers Refer to the table below for information on using block I O with various Allen Bradley programmable controllers If You are Using You must use 1771 SN sub I O scanner PLC 2 family programmable controller 1771 SD2 remote I O scanner PLC 3 family programmable controller Block attaches directly to controller PLC 5 family programmable controller 1747 DSN scanner or SLC 500 programmable controller 1747 SN remote I O scanner Figure 1 1 shows the physical features of the block I O Figure 1 1 Major Features of the Block I O Module 1791 IOBA B shown Switch Assemblies Status Indicators Communication LED Power LED EIE seo Fone INPUT OOOOOOOOOOOOOCOOOOOO oT TTT eis TTT TTS Removable Remote I O Link Connector Removable Input Output Connector 10825 1 1 1 Chapter 1 Introducing Block I O Wiring Connectors Remote I O link connector and input output connector are removable for easy connection of wiring Switch Assemblies Two DIP switches are provided for setting the I O rack number starting I O group transmission rate last chassis last state and DH 485 terminator Status Indicators LED indicators display the status of communication power and input output These provide a visual indic
19. llaneous 1771 AF All 1771 AF1 All Chapter Objectives Setting the Configuration Switches Configuring Your Block 1 0 for PLC Family Programmable Controllers 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 Each block I O module has two 6 position DIP switches for setting starting I O group rack number transmission baud rate a last chassis last state DH 485 terminator These switches are accessible by opening the door on the left side of the module Figure 3 1 3 1 Chapter 3 Contiguring Your Block 1 0 for PLC Family Programmable Controllers Figure 3 1 Switch Settings for 1791 IOBA B and IOBB B om OO Oo ooo COMM POWER 7 00000000 uU OOOQOOOOQ __ KWOOODOOCOOCOOOCOO00000 ele INCASE 12516 s e of ore Hold last state On Closed Oros Or Cs ETE Off Open On Closed Off Open Rack Number Switches 3 6 see Table 3 A B and C On Closed Switch as viewed from this end No On Closed sche ES mas a on Co rere Table 3 Addressing PLC 2 Family Processors Rack Switch Number Number 3 4 5 6 On Closed 2 On Closed On Closed 3 Closed Off Open On Closed On Closed 4 Off Open
20. nunnnnun COMM POWER 00000000 OOOOOCOOO OOO0000000000000000 S TELTTELEISISETELEEEETELELTLTELL ES 10846 1 5 1 Chapter 5 Troubleshooting Table 5 A Troubleshooting Chart Indication Probable Cause Corrective Action Green COMM LED on Red POWER LED on Normal indication None required I O status LED on off Cycle power to the block If problem persists Red POWER LED flashing Block failed self test or a major fault is detected replace the block Red POWER LED off No 24V dc power connected or hardware fault Check 24V dc power to block Check that power LED is on Make sure that Green COMM LED off No communication with processor scanner etc proper number of blocks are configured Check remote I O link or distributed I O link wiring Reset command or output disable bit for SLC has been issued by processor or scanner Check program Correct as necessary Green COMM LED flashing SLC or programmable controller not in run mode Place in run mode 5 2 Appendix Specifications General Specifications External power Environmental Conditions Operating Temperature Storage Temperature Relative Humidity Conductors Wire Size Power Dissipation Thermal Dissipation Remote I O Isolation DH 485 Isolation Interconnect cable length Cable requirements 1791 IOBA B Input Specifications Number of Inputs 200mA 24V dc initial surge 5 5A for 10sec The supply must be able to source
21. r 115 2K 5 000 cable feet PLC 5250 requires a 5150 RS remote scanner 57 6K 10 000 cable feet 32 blocks channel 32 blocks scanner 64 blocks 2 115 2K 5 000 cable feet scanners with 82 ohm terminator 230 4K 2 500 cable feet SLC 5 01 Controller 1747 DSN Scanner module 7 blocks 230 4K 2 500 cable feet SLC 5 02 Controller 1747 DSN Scanner module 30 blocks 230 4K 2 500 cable feet 57 6K 10 000 cable feet 1747 SN Remote I O SLC 5 02 Controller 16 blocks 115 2K 5 000 cable feet Scanner Module 230 4K 2 500 cable feet The DH 485 network which operates independent of the remote O distributed I O network supports up to 30 DH 485 nodes blocks or 1747 AIC isolated couplers The maximum DH 485 network distance is 4 000 cable feet 2 2 Chapter 2 Installing Block I O Installing the Block I O Figure 2 1 shows the mounting dimensions for the block I O module 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 Figure 2 1 Mounting Dimensions for the Block I O Module Cat No 1791 IOBA B and IOBB B 8mm Depth 96 0mm 3 78 ae 0 31 198mm om OO OO Ooo BDunununmu in a nuri OO OOOO 0 Lu 16mm 0 63 212mm 8 35 10829 1 10mm 0 39 5 3 S m 0 63 The operating temperature in the air gap between block I O modules must not exceed 55 C 151 F Figure 2
22. r The 1747 SN scanner only used with the SLC 5 02 processor can address 16 blocks When used with the Distributed I O Scanner module block addresses must be contiguous The actual number of blocks to which the 1747 DSN scanner module will communicate is determined when programming the SLC controller Refer to publication 1747 NM004 Series A Distributed I O Scanner and publication 1747 NM0095 Series A RIO Scanner for complete information on switch settings and addressing of the block I O 4 3 Chapter Objectives LED Indicators Troubleshooting In this chapter you will learn about the LED indicators on the block I O module and how to use them to troubleshoot the unit Each block I O module has LED indicators Figure 5 1 which provide indication of module status Each module has the following green communication indicator indicates whether communication is occurring between processor or scanner and the block red power indicator indicates if power is applied to module and internal hardware status 16 T O status indicators 8 input 8 output 10 input 6 output reflect the state of the individual inputs and outputs on or off Figure 5 1 shows the location of the indicators Refer to Table 5 A for status indications reported by the indicators Figure 5 1 Indicators on the Block I O Module 1791 IOBA B shown Status Indicators Communication LED green Power LED red i EIE ouey
23. sible 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 Warnings and Cautions Identify a possible trouble spot Tell what causes the trouble Give the result of improper action Tell the reader how to avoid trouble 1992 Allen Bradley Company Inc PLC is a registered trademark of Allen Bradley Company Inc SLC is a registered trademark of Allen Bradley Company Inc Important We recommend you frequently backup your application programs on appropriate storage medium to avoid possible data loss Table of Contents Important User Information 1 Using This Manual P 1 Purpose of Manual ccce ee m n P 1 ior P 1 Vocabulary o iim iue Ren E ERE ea 1 Manual Organization P 1 About Block WO P 2 Related P 2 Introducing Block 1 0 1 1 Chapter 1 1 General Description 1 1 How Block I O Fits in a PLC System
24. th an Allen Bradley programmable controller It helps you install program and 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 I O module as the block or the module the programmable controller as the controller This manual is divided into 5 chapters The following chart shows each chapter with its corresponding title and brief overview of the topics covered in that chapter Module power requirements location and wiring Installing Block I O information How to set the configuration switches and address Family Programmable Controllers the block 1 0 Configuring Your Block I O for PLC Configuring Your Block I O for SLC How to set the switches and where to go for full Controllers information Troubleshooting io ae the indicators to troubleshoot your block Appendix A Specifications for the block I O P 1 Preface Using This Manual About Block 1 0 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 Table P A is
25. ual machines but integrate the manufacturing process while providing access to vital plant floor data that can be used to support decision making throughout the enterprise ASIA PACIFIC CANADA LATIN AMERICA HEADQUARTERS HEADQUARTERS HEADQUARTERS Allen Bradley Hong Kong Allen Bradley Canada Allen Bradley Limited Limited 1201 South Second Street Room 1006 Block B Sea 135 Dundas Street Milwaukee WI 53204 USA View Estate Cambridge Ontario NIR Tel 1 414 382 2000 28 Watson Road 5X1 Telex 43 11 016 Hong Kong Canada FAX 1 414 382 2400 Tel 852 887 4788 Tel 1 519 623 1810 Telex 780 64347 FAX 1 519 623 8930 FAX 852 510 9436 P N 955112 02 Copyright 1992 Allen Bradley Company Inc Printed in USA
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