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1746-UM005 - Rockwell Automation

1. lt 1 lt lt lt lt lt lt lt IN16 lt BASIC net lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt BASIC 0B32 0V32 Publication 1746 UMO005B EN P June 2004 3 4 Installing and Wiring Your Analog Module Publication 1746 UMO005B EN P June 2004 NI4 NI04I NIO4V NO4I NO4V 7 s V IV32 s V IB32 bs V V 0X8 V V V V V NO4I V V V V V NO4V V ITB16 s V ITV16 7 V IC16 s V V OBP16 be y V V OVP16 e e V NT4 e V e NR4 mae The NO4I and NO4V modules provide user supplied external 24V dc power supply connections When the NO4I module is used in a fixed controller you must provide an external power supply When the NO4I or NO4V is used with an external 24V dc power supply and is placed in a fixed controller expansion chassis it is compatible with those modules noted in the compatibility chart starting on the previous page When set for external power the module will only draw the 5V current off the backplane Refer to the next section for details on how to configure your module for external power The 24V dc user power connection on a fixed SLC 500 can power an NO4I or NO4V analog module Howe
2. Source A N7 0 0 o Source B o Minimum analog output value MOV MOVE Source 6242 Dest 0 2 0 Rung 2 1 N7 0 contains percentage of valve open If this value is greater than 100 move the maximum value to the analog output 31208 decimal 20 mA at the analog output Check for Above above range flag range GRT B3 GREATER THAN Source A N7 0 i o Source B 100 Minimum analog output value MOV MOVE Source 31208 Dest 0 2 0 Ladder logic continued on the next page Publication 1746 UM005B EN P June 2004 Rung 2 2 Scale values in the 0 to 100 range to the decimal range for the 4 20 mA Below Above range flag range flag B3 B3 1 t 0 dL Rung 2 3 Programming Examples 6 13 analog output SCP SCALE W PARAMETERS Input N7 0 o Input Min 0 Input Max 100 Scaled Min 6242 Scaled Max 31208 Scaled Output 0 2 0 SSS SS eS Publication 1746 UMO005B EN P June 2004 6 14 Programming Examples Scaling Offset when ea may be applications vais a capi Ne put o math instructions is greater than 32 707 or less than 32 708 In these gt
3. MULi 522 4 Sseee ese MULTIPLY Source A LO_VALUE 3267 Source B SLOPE_X10K 9983 Dest N10 5 32767 Pees SS SSS SSDs ssSaoSess DDV DOUBLE DIVIDE Source 10000 Dest N10 6 3261 fE e E N E a SSSss SUB SUBTRACT Source A SCALE LO 3277 Source B N10 6 3261 Dest OFFSET 16 aS a a a SSS SS SaaS 5 5 U 0 MUL MULTIPLY Source A ANALOG_IN 8000 Source B SLOPE_X10K 9983 Dest N10 8 o A A SSeS 6 5 p Uj gt sssennnainl 0 DDV DOUBLE DIVIDE Source 10000 Dest N10 12 l o FE a ADDsssseseseeeeees ADD oeescs Source A N10 12 o Source B OFFSET 16 Dest ANALOG_SCL 8002 PoesessSSSSsSsoesss Appendix D Module Input and Output Circuits 380K NI4 Series B module Input Circuit for 1746 NI4 NIO4I and NIO4V 500K NI4 Series A module Modules 380K NI4 Series B module 500K NI4 Series A module IN gt N gt 380K NI4 Series B module ANL 500K NI4 Series A module COM gt Switches S1 and S2 control whether the input circuit is for current closed or voltage open Voltage Output Circuit for 1746 NIO4V Positive Voltage Supply Modules gt VOLTAGE OUT gt ANLCOM Negative Voltage Supply Current Output Circuit for 1746 NI04I Module
4. 6 2 Calculating the Out of Range Flag Using the Scale TASH CHO eea shana sed he 8 pe oath Adee A ap OURS 6 3 Using Standard Math i ands Sewers eS SS Stats Sek 6 4 Using the Scale SCL Instruction 6 6 Using Scale with Parameters SCP Instruction 6 7 Addressing and Scaling Outputs 0 05 6 8 Calculating the Linear Relationship 6 8 Using Standard Matin Js 2es 066 dBA Seca Reo RS aT 6 10 Using the Scale with Parameters SCP Instruction 6 12 Scaling Offset when gt 32 767 or lt 32 768 6 14 Calculating the Linear Relationship 6 14 Maintenance and Safety Specifications Two s Complement Binary Numbers Optional Analog Input Software Calibration Module Input and Output Circuits Table of Contents iii Calculating the Shifted Linear Relationship 6 15 Using Standard Math oaaao anaa aaa 6 16 Using the Scale with Parameters SCP Instruction 6 18 Scaling and Range Checking and Analog Inputs and CN ae era oe nee aN Sette Bue ty Re oe ek ek 6 20 Calculating the Linear Relationship 6 21 Using Standard Math Instructions 6 22 Scaling and Range Checking of Analog Inputs and Outpt att cil a he ho Techies ete ee Paes ee Rea EO 6 24 Using SCE Instruction 2 hc 0 Ais ood hie pe ES 6 25 Using the Scale with Parameters SCP Instruction 6 26 Chapter 7 Preventative Maintenance 5
5. Rung 2 2 Turn on the below range alarm output when the analog input is below the acceptible range Below Below range flag range alarm B3 O 2 o o Rung 2 3 Turn on the above range alarm output when the analog input is above the acceptible range Above Above range flag range alarm B3 O 2 1 1 Rung 2 4 Below Above Scale range flag range flag analog input B3 B3 SCP SCALE W PARAMETERS o i Input I i ij 0 Input Min 0 Input Max 32767 Scaled Min 100 Scaled Max 500 Scaled Output N7 0 0 Rung 2 5 Publication 1746 UM005B EN P June 2004 6 8 Programming Examples Addressing and Scaling We are making the following assumptions Outputs e The NIO4I is located in slot 2 of a SLC 500 system e An actuator from a flow control valve is wired to output channel 0 e The actuator accepts a 4 mA to 20 mA signal proportional to 0 to 100 of the valve s opening For this example the signal actuator can not receive a signal out of the 4 mA to 20 mA range e The percentage of valve opening is manually input to the SLC The following graph displays the linear relationship 20 mA 31208 scaled max Scaled Value 4 mA 6242 sca
6. e The NI4 is located in slot 3 of a modular system e A temperature transducer with a 0 to 10V dc output is wired to the second input channel on the analog module e The transducer voltage signal is proportional to a range of 100 C to 500 C 212 F to 932 F e The process temperature must stay between 275 and 300 C 527 F to 572 F If the temperature deviates from this range a flag is set and this out of range value is not processed The data is presented in degrees C for monitoring and display purposes Publication 1746 UMO005B EN P June 2004 6 2 Programming Examples The scaling operation is displayed in the following graph It displays the linear relationship between the input and the resulting scaled values 500 C Scaled max Scaled Value 300 C 275 C Process operating range 100 C Scaled min _0 0V de Low High 32767 10V dc 1 LSB input min Limit Limit input max Input Value Calculating the Linear Relationship Use the following equations to express the linear relationship between the input value and the resulting scaled value Scaled value input value x slope offset Slope scaled max scaled min input max input min 500 100 32 767 0 400 32 767 Offset scaled min input min x slope 100 0 x 400 32 767 100 Scaled value input value x 400 32767 100 Publication 1746 UMO005B EN P June 2004 Programming Examples 6 3
7. Allen Bradley SLC 500 4 Channel Analog I O Modules Catalog Numbers 1746 NI4 1746 NI04I 1746 NIO4V 1746 NO4l and 1746 NO4V User Manual Rockwell Automation Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment Safety Guidelines for the Application Installation and Maintenance of Solid State Controls Publication SGI 1 1 available from your local Rockwell Automation sales office or online at http www ab com manuals gi describes some important differences between solid state equipment and hard wired electromechanical devices Because of this difference and also because of the wide variety of uses for solid state equipment all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable In no event will Rockwell Automation Inc be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment The examples and diagrams in this manual are included solely for illustrative purposes Because of the many variables and requirements associated with any particular installation Rockwell Automation Inc cannot assume responsibility or liability for actual use based on the examples and diagrams No patent liability is assumed by Rockwell Automation Inc with respect to use of information circuits equipment or s
8. 1x2 3 8192 1x212 4096 1x211 2048 1x210 1024 1x29 512 1x28 256 1x2 128 1x25 64 1x25 32 1x2 16 1x23 8 1x22 4 1x2 2 1x29 4 1x215 1 This position is always 1 for negative numbers Publication 1746 UMO005B EN P June 2004 B 4 Two s Complement Binary Numbers Publication 1746 UMO005B EN P June 2004 Calibrating an Analog Input Channel Appendix C Optional Analog Input Software Calibration This appendix helps you calibrate an analog input channel using software offsets to increase the expected accuracy of an analog input circuit Examples of equations and a ladder diagram are provided for your reference A software calibration reduces the offset error and gain error at a given temperature by scaling the values read at calibration time The following procedure can be adapted to all analog inputs current or voltage For this example the 1746 NI4 with a 4 mA to 20 mA input is used Refer to the 1746 NI4 specifications in appendix A These specifications represent the worst case values The overall error for the NI4 which is guaranteed to be not more than 0 365 includes non linearity repeatability offset error and gain error at a given temperature The overall error of 0 365 at 20 mA equates to 60 LSB of error or a code range of 16324 to 16444 Any value in this range is returned by an analog input channel at 20 mA The expected nominal value at 20 mA is 16384 After performing
9. Calculating the Out of Range Flag Using the Scale Instruction Use the following equation to calculate the low and high limit input values which determine the out of range flag Input value scaled value offset slope low limit 275 100 400 32 767 14 344 high limit 300 100 400 32 767 16 393 Once you have calculated the linear relationship and the out of range flag value this example allows you to e Turn on a heater or fan to maintain the process temperature between 275 and 300 C by using the out of range flags e Monitor the process temperature using a Data Table Access Module DTAM or Hand Held Terminal HHT e Output the process temperature for operation interface purposes by MOVing the scaled value to an output module as variable data to a Dataliner Converting the scaled value to BCD using TOD instruction and MOVing it to an LED display The following ladder diagrams show how to program the processor The first example uses standard math instructions available in any SLC 500 processor The ladder diagram prevents a processor fault by unlatching the mathematical overflow bit S2 5 0 before the end of the scan The second example uses the scaling instruction SCL available in the 5 02 and higher processors The rate parameter is calculated by multiplying the slope by 10 000 rate 400 32767 x 10 000 122 If the result of the Source times the Rate divided by 10000 is greater
10. Indicator Lights When the red LED on the analog module is illuminated it indicates that 24V dc power is applied to the module Activating Devices When Troubleshooting When troubleshooting never reach into the machine to actuate a device Unexpected machine motion could occur Use a wooden stick Stand Clear of Machine When troubleshooting any SLC 500 system problem have all personnel remain clear of the machine The problem could be intermittent and sudden unexpected machine motion could occur Have someone ready to operate an emergency stop switch in case it becomes necessary to shut off power to the machine ATTENTION Never reach into a machine to actuate a switch since unexpected machine motion can occur A Remove all electrical power at the main power disconnect switches before checking electrical connections or inputs outputs causing machine motion Program Alteration There are several causes of alteration to the user program including extreme environmental conditions Electromagnetic Interference EMD improper grounding improper wiring connections and unauthorized tampering If you suspect the program has been altered check it against a previously saved program on an EEPROM or UVPROM memory module Safety Circuits installed on the machine for safety reasons like over travel limit switches stop push buttons and interlocks should always be hard wired to the master control relay These devices must be wired
11. decimal value of the position The equivalent decimal value of the binary number is the sum of the position values Positive Decimal Values The far left position is always 0 for positive values As indicated in the figure on the next page this limits the maximum positive decimal value to 32767 all positions are 1 except the far left position For example 0000 1001 0000 1110 2114 28 23 22 21 2048 256 8 4 2 2318 0010 0011 0010 1000 213429 28 25 98 8192 512 256 32 8 9000 Publication 1746 UMO005B EN P June 2004 B 2 Two s Complement Binary Numbers 1x214 16384 1x2 8192 1x212 4096 1x21 2048 1x2 1024 1x2 512 1x28 256 1x2 128 1x28 64 1x25 32 1x2 16 1x23 8 1x22 4 1x21 2 1x20 4 0x2 5 Q This position is always zero for positive numbers Negative Decimal Values In two s complement notation the far left position is always 1 for negative values The equivalent decimal value of the binary number is obtained by subtracting the value of the far left position 32768 from the sum of the values of the other positions In the figure on the next page all positions are 1 the value is 32767 32768 1 For example 1111 1000 0010 0011 21442134212421142 421429 219 16384 8192 4096 2048 32 2 1 32768 30755 32768 2013 Publication 1746 UMO005B EN P June 2004 Two s Complement Binary Numbers B 3 1x2 16384
12. installing programming or troubleshooting control systems that use SLC 500 4 Channel Analog I O Modules You should have a basic understanding of electrical circuitry and familiarity with relay logic If you do not obtain the proper training before using this product This manual describes the procedures you use to install wire and troubleshoot your 4 channel analog I O module This manual e explains how to install and wire your module e gives you an overview of the SLC 500 programmable controller system Refer to your programming software user documentation for more information on programming your SLC 500 programmable controller Publication 1746 UMO005B EN P June 2004 2 Preface Related Documentation The following documents contain additional information concerning Rockwell Automation products To obtain a copy contact your local Rockwell Automation office or distributor For Read this Document Document Number In depth information on the SLC Instruction Set SLC 500 Instruction Set Reference Manual 1747 RMO001 A description on how to install and use your Modular SLC 500 SLC 500 Modular Hardware Style User 1747 UM011 programmable controller Manual A description on how to install and use your Fixed SLC 500 SLC 500 Fixed Hardware Style Installation amp 1747 6 21 programmable controller Operation Manual A description on how to install 4 channel analog I O modules SLC 500 4 Channel Ana
13. the upper boundary condition is 5 volts enter 16384 into N7 0 Repeat step 7 for the upper boundary condition Repeat steps 1 through 9 for each output channel If any of the output channels do not pass the start up procedure check for the following potential causes e The processor is not in the RUN mode e The terminal block is not secured in the analog module e The analog module terminal block is not wired properly or wires are broken See chapter 3 for details on wiring the analog module e The actuator or test ammeter voltmeter is not operating properly Addressing Out of Range Detection and Scaling of Analog Inputs Chapter 6 Programming Examples This chapter shows several programming examples that provide additional capabilities such as e Addressing Out of Range Detection and Scaling of Analog Inputs e Addressing and Scaling of Analog Outputs e Scaling Offsets when gt 32 767 or lt 32 768 e Scaling and Range Checking of Analog Inputs and Outputs AA The programming examples in this chapter are for informational purposes only Because of the many variables and requirements associated with any application the Allen Bradley Company cannot assume responsibility or liability for actual use based on these examples The following example uses an NI4 analog input module to show input addressing range checking and scaling of analog inputs into engineering units The following assumptions are being made
14. 1 O e 2 Output Channel 2 0 e 3 Output Channel 3 1746 NO4I NIO4I 1746 NO4V NIO4V Current Range Decimal Representation Voltage Range Decimal Representation for Output Word for Output Word 0 to 21 mA 0 to 32 764 10 to 10V dc 32 768 to 32 764 0 to 20 mA 0 to 31 208 0 to 10V dc 0 to 32 764 4 to 20 mA 6 242 to 31 208 0 to 5V dc 0 to 16 384 1 to 5V dc 3 277 to 16 384 o Write ladder logic to process the module s analog data Reference Several programming examples are provided in chapter 6 that demonstrate how to scale the raw Chapter 5 data from the analog card into engineering units such as psi percent etc Study these examples Testing Your and apply them to your application as appropriate Publication 1746 UM005B EN P June 2004 Module Chapter 6 Programming Examples European Union Directive Compliance Chapter 3 Installing and Wiring Your Analog Module To obtain the maximum performance from an analog module proper module installation is imperative This chapter describes the procedures that you must follow to install the analog module in an SLC 500 system The following items are described e European Union Directive Compliance e determining your power requirements e configuring your module e selecting a slot in the chassis e installing your module e wiring considerations system wiring guidelines grounding your cable determining the
15. 1 Bit 15 Bit 0 SLC 500 1746 NO4I_ amp NO4V Address SLC 5 01 or 5 02 Analog Output Modules Data Files Output ChannelO Word 0 0 e 0 Output Channel 1 Word 1 O e 1 utput Channel 2 Word 2 O e 2 Word 3 0 e 3 0 Output Channel 3 it Bit 15 Bit 0 e slot of module Publication 1746 UMO005B EN P June 2004 4 4 Module Operation and System Considerations 1746 NI4 msb eo 15 14 13 rer L_ 15 4 13 e2 L 15 13 l e 3 15 4 13 1746 NIO41 amp NIO4V ool 1 T 15 14 13 12 11 4 3 0 ot d morm x 5 9 8 7 6 5 4 3 2 0 Publication 1746 UM005B EN P June 2004 Bit Level Addressing The following bit maps show bit level addressing for the analog inputs and outputs The input channel converter resolution is 16 bits or 1 word The output channel converter resolution is 14 bits and is loaded from the most significant 14 bits of the associated output word The two least significant bits O e 0 0 and O e 0 1 of the output word have no effect on the actual output value CH 0 OUTPUT 8 7 6 5 10 9 UTPUT e slot of module x bit not used Module Operation and System Considerations 4 5 Processor Update of Analog Data The analog input and output data is updated by the processor once during each scan of the user program The table below shows typical analog update scan times and the number of input and
16. 25 Publication 1746 UMO005B EN P June 2004 6 26 Programming Examples Using the Scale with Parameters SCP Instruction Rung 2 0 Check for below range LES LESS THAN Source A I 1 0 Source B 3277 Rung 2 1 Check for above range GRTS s S gt GREATER THAN Source A I 1 0 Source B 16384 Rung 2 2 B3 B3 0 ale Rung 2 3 Publication 1746 UMO005B EN P June 2004 Scale the analog input for the analog output B3 0 MOv MOVE Source o Dest 0 1 0 B3 1 MOVv MOVE Source 8192 Dest 0 1 0 ECP csesenaannana SCALE W PARAMETERS Input I 1 0 Input Min 3277 Input Max 16384 Scaled Min 0 Scaled Max 8192 Scaled Output OF1 0 Horn Preventative Maintenance Chapter f Maintenance and Safety This chapter provides preventive maintenance information and safety considerations when troubleshooting your SLC 500 system The printed circuit boards of the analog modules must be protected from dirt oil moisture and other airborne contaminants To protect these boards the SLC 500 system must be installed in an enclosure suitable for the environment The interior of the enclosure sh
17. 4 2 Bit Level Addressing 2 4 ood Keele eka oR 4 4 Processor Update of Analog Data 4 5 Monitoring the Input and Output Data 4 5 Converting Analog Input Data 4 6 Converting Analog Output Data 4 7 System Considerations 2 4 4 5 24 0458 aoa Sree amp eae Le 4 9 Sate State for Outputs tan 8 Go ER Se weet ee 84 4 9 Retentive Programming Option 4 9 Retentive Analog Output Example 4 10 Non Retentive Analog Output Example 4 11 During a Mode Change or Power Cycle 4 11 Input Out of Range Detection 005 4 11 Response to Slot Disable hdsie DEE 4 ainsi haha tones 4 13 Input Response to Slot Disable 4 13 Output Response to Slot Disable 4 13 Input Channel Filtering n gt sag 4 eos bs FSS es kes 4 14 Chapter 5 Testing the SLC 500 System oana ies SLE READ OO 5 1 Start up Procedures ss achg ok So AG ee eR 5 1 Inspect the Analog Module 00005 5 2 Disconnect Prime Movers Motion Devices 5 2 Power Up the SLC 500 System yah oso p45 Rear ecu gee aya 5 3 Testing Analog Inputs 3 cei Macias d aie eg ee es 5 4 Testing Analog Outputs s 2 425028 ks eae he eee ee 5 6 Chapter 6 Addressing Out of Range Detection and Scaling of Analog THUS i tens vK a sth heated he a Be hoe tone oe eve ot Bua dowe eee aad 6 1 Calculating the Linear Relationship
18. Belden is a trademark of Belden Inc C UL is a registered trademark of Underwriters Laboratories www rockwellautomation com Power Control and Information Solutions Headquarters Americas Rockwell Automation 1201 South Second Street Milwaukee WI 53204 2496 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Europe Middle East Africa Rockwell Automation Vorstlaan Boulevard du Souverain 36 1170 Brussels Belgium Tel 32 2 663 0600 Fax 32 2 663 0640 Asia Pacific Rockwell Automation Level 14 Core F Cyberport 3 100 Cyberport Road Hong Kong Tel 852 2887 4788 Fax 852 2508 1846 Publication 1746 UMO05B EN P June 2004 Supersedes Publication 1746 6 4 January 1996 Copyright 2004 Rockwell Automation Inc All rights reserved Printed in the U S A
19. Checking and Analog Inputs and Outputs Publication 1746 UMO005B EN P June 2004 This example demonstrates the addressing of analog I O and the scaling and range checking of analog input and output values An NIO4V is placed in slot 1 of an SLC 500 system A 0 to 200 psi pressure sensor is input as a 4 mA to 20 mA signal to input channel 0 The input value is checked to ensure it remains within the 4 mA to 20 mA range It is then scaled and output as a 0 to 2 5 volt signal to a panel meter pressure display connected to output channel 0 If an out of range condition is detected a flag bit will be set The scaling operation is shown below The graph displays the linear relationship between the input value and the resulting scaled value scaled max Scaled Value 0 scaled min _ 3277 16384 input min input max Input Value Programming Examples 6 21 Calculating the Linear Relationship Use the following equations to express the linear relationship between the input value and the resulting scaled value Scaled value input value x slope offset Slope scaled max scaled min input max input min 8192 0 16384 3277 8192 13107 Offset scaled min input min x slope 0 3277 8192 13 107 2048 Scaled value input value x 8192 13017 2048 This equation can be implemented using integer math capabilities of the SLC 500 system Three example programs are shown The first runs on an
20. OS400 processors The ladder diagram prevents a processor fault by unlatching the mathematical overflow bit S2 5 0 before the end of the scan Refer to the example ladder diagram on the next page Following the standard math example is a ladder diagram using the SCP instruction available only in the SLC 5 03 OS302 or later SLC 5 04 OS401 or later and SLC 5 05 Publication 1746 UMO005B EN P June 2004 6 10 Programming Examples Using Standard Math Rung 2 0 N7 0 contains percentage of valve open If this value is less than 0 move the minimum value to the analog output 6242 decimal 4 mA at the analog output Check for Below below range flag range LES B3 LESS THAN Source A N7 0 0 o Source B o Minimum analog output value MOV MOVE Source 6242 Dest 0 2 0 Rung 2 1 N7 0 contains percentage of valve open If this value is greater than 100 move the maximum value to the analog output 31208 decimal 20 mA at the analog output Check for Above above range flag range GRT B3 GREATER THAN o 7 7 5555 Source A N7 0 1 o Source B 100 Minimum a
21. and equipment you need e lists preliminary considerations e describes when to configure the module e explains how to install and wire the module e discusses system power up procedures Have the following tools and equipment ready e small blade screwdriver e an adequate length of communication cable Belden 8761 for your specific application See chapter 3 Installing and Wiring Your Analog Module for maximum cable distances e programming equipment Publication 1746 UMO005B EN P June 2004 2 2 Quick Start for Experienced Users Procedures Eg Check the contents of shipping box Reference Unpack the shipping box making sure that the contents include e Analog I O module Catalog Number 1746 Series e installation instructions publication 1746 IN008 If the contents are incomplete call your local Allen Bradley representative for assistance Determine your power requirements for the modular controller Reference Review the power requirements of your system to see that your chassis supports placement of the Chapter 3 analog module Installing and Wiring Your e For modular style systems calculate the total load on the system power supply using the Analog Module procedure described in the SLC 500 Modular Hardware Style User Manual publication 1747 UM011 or the SLC 500 Family System Overview publication 1747 SO001 Appendix A Specifications e For fixed SLC 500 controllers refer to the SLC 5
22. cable length e wiring the analog module e minimizing electrical noise on the analog module If this product is installed within the European Union or EEA regions and has the CE mark the following regulations apply EMC Directives This product is tested to meet Council Directive 89 336 EEC Electromagnetic Compatibility EMC and the following standards in whole or in part documented in a technical construction file e EN 50081 2 EMC Generic Emission Standard Part 2 Industrial Environment e EN 50082 2 EMC Generic Immunity Standard Part 2 Industrial Environment This product is intended for use in an industrial environment Publication 1746 UM005B EN P June 2004 3 2 Installing and Wiring Your Analog Module Determining Your Power Requirements for a Modular Controller Determining Your Power Requirements for a Fixed Controller Publication 1746 UMO005B EN P June 2004 Analog modules require both 5V dc and 24V dc power from the backplane of the SLC 500 system However the NO4I and NO4V analog modules can use an external 24V dc power supply This eliminates the 24V dc backplane power requirement providing configuration flexibility if SLC power supply loading is critical These two modules provide user supplied external 24V dc power supply connections The 24V dc user power connection on a fixed SLC 500 can power an NOA4I or NO4V analog module However the regulation of the 24V dc user connection on a
23. following potential causes e The processor is not in the TEST CONTINUOUS scan mode e The terminal block is not secured on the analog module e The analog module terminal block is not wired properly or wires are broken See chapter 3 for details on wiring the analog module e The analog module input channel sensor or test voltage or current source is not operating properly If a current source is not available to test a current input channel a test voltage can be applied to the current input channel to achieve the input boundary conditions In normal operation a voltage source should not be connected to an analog input channel in the current mode To determine the boundary conditions use the following equation Voltage Input V Current Input mA x 0 25 EXAMPLE If the current input boundary conditions are 1 mA and 5 mA the boundary conditions in volts would be 0 25 volts and 1 25 volts If this calculation is done correctly the test voltage should never exceed 5 volts Testing Analog Outputs Before testing the analog module output channels the SLC 500 system must be installed and tested according to the SLC 500 Modular Hardware Style User Manual publication 1747 UM011 or the SLC 500 Fixed Hardware Style Installation amp Operation Manual publication 1747 6 21 The processor must be connected to a programming Testing Your Module 5 7 device properly configured and must have no rungs in its ladder progr
24. for N14 A 1 Series B module Change in Impedance Channel to Channel specification for A 1 NI4 Series B module Change in Input Impedance specification for NI4 Series B A 4 module Change in resistance value for NI4 Series B module Appendix D Publication 1746 UMO005B EN P June 2004 2 Summary of Changes Publication 1746 UMO005B EN P June 2004 Overview Quick Start for Experienced Users Installing and Wiring Your Analog Module Table of Contents Preface Who Should Use this Manual i 4 5 260 e 64 sa aay eee as P 1 Purpose of this Manual s lt si0 ova dae pba ee eens P 1 Related Documentation noaa aaa P 2 Common Techniques Used in this Manual P 3 Your Questions or Comments on this Manual P 3 Chapter 1 How to Use Analog 74 0425 5 48 hoes bakes EEG POT ES es 1 1 Types of Analog Modules 0 0 0000000000 1 1 1746 NI4 Analog Input Module 0 1 2 1746 NIO4I and NIO4V Analog Combination Modules 1 2 1746 NO4I and NO4V Analog Output Modules 1 2 Chapter 2 Required Tools and Equipment cults wks nto eto pe sues 2 1 Proced res fo Spee ag Wn tae Wana Uae ea Ad Na E 2 2 Chapter 3 European Union Directive Compliance 3 1 EMG OU CUY CS eto fo 9 Po rade BUG wink Gi ea kn Se oer ORAR eG 3 1 Determining Your Power Requirements for a Modular Controler eena peace ee BER LS Re A ees 3 2 Determining Your Power Requirements for a Fixed Control
25. in series so that when any one device opens the master control relay is de energized thereby removing power to the machine Never alter these circuits to defeat their function Serious injury or machine damage could result Appendix A Specifications This section lists the specifications for the 1746 NI4 NIO4I NIO4V NO4I and NO4V analog modules They include Analog Modules Specification General Specifications for NI4 NIO4I NIO4V NO4I and NO4V e General specifications e Current and Voltage input specifications e Current and Voltage output specifications Specification SLC Communication Format Value 16 Bit Two s Complement Binary Field Wiring to Backplane Isolation 500V de Update Time 512 us for all channels in parallel Recommended Cable Shielded Belden 8761 Maximum Wire Size 14 AWG maximum Terminal Block Removable Location 1746 chassis Calibration Factory Calibrated Refer to calibration procedure pg D 2 Noise Immunity NEMA Standard ICS 2 230 Environmental Conditions Operating Temperature Storage Temperature Relative Humidity 0 to 60 C 32 to 140 F 40 to 85 C 40 to 185 F 5 to 95 non condensing Agency Certification when product or packaging is marked C UL Listed Industrial Control Equipment Dus for use in Class 1 Div 2 Hazardous Locations C Marked for all applicable directives Marked for all ap
26. js 6 kc ak oO A hah Bay hoe 7 1 Safety Considerations When Troubleshooting 7 2 Appendix A Analog Modules Specification lt lt 6 9 sea do Selec 4a ode eS A 1 General Specifications for NI4 NIO4I NIO4V NO4I and NOV vu ted dietu se eh Seoul ee att ll ty ee Rell tee A A 1 General Analog Input Specifications for NI4 NIO4I and NIOV hee teh tate be ed G hh ade Sop eae S pad wea A 2 Current Loop Input Specifications for NI4 NIO4I and PTO ioe ete Mens vit ser hs es cet ean dace des A techa ek ap aid mead A aed oto A 3 Voltage Input Specifications for NI4 NIO4I and NIO4V A 4 Current Output Specifications for NIO4I and NO4I A 5 Voltage Output Specifications for NIO4V and NO4V A 6 Appendix B Positive Decimal NAMES ys hats eae PKS ESAS EES A 1 Negative Decimal Values 00 0005 A 2 Appendix C Calibrating an Analog Input Channel A 1 Calculating the Software Calibration A 2 Appendix D Index Publication 1746 UMO005B EN P June 2004 Table of Contents iv Publication 1746 UMO005B EN P June 2004 Who Should Use this Manual Purpose of this Manual Preface Read this preface to familiarize yourself with the rest of the manual It provides information concerning e who should use this manual e the purpose of this manual e related documentation e conventions used in this manual e Rockwell Automation support Use this manual if you are responsible for designing
27. module Position the module e in a slot away from ac or high voltage dc module e in the chassis closest to the bottom of the enclosure where the SLC 500 system is installed e away from the chassis power supply if installed in a modular system All modules are mounted in a single slot Remember that in a modular system the processor always occupies the first slot of the first chassis When installing the analog module in a chassis it is not necessary to remove the terminal block from the module However if the terminal block is removed use the write on label located on the side of the terminal block to identify the module location and type Installing and Wiring Your Analog Module 3 7 ATTENTION Never install remove or wire modules with power applied to the chassis Also do not expose analog modules to surfaces or other areas that may typically hold an electrostatic charge Electrostatic charges can destroy the analog circuitry a Removing the Analog Module Terminal Block To remove the terminal block grasp it on the top and bottom and pull outward and down mM The potentiometer sets the voltage during factory calibration to 2 5 volts It is set and sealed at the factory and does not require any adjustments 1 Verify that all switches are set correctly for the application ATTENTION Care should be taken to avoid connecting a voltage source to a channel configured for a current input Publicati
28. of the various analog modules Publication 1746 UMO005B EN P June 2004 1 2 Overview 1746 NI4 Analog Input Module The 1746 NI4 Analog Input module contains 4 analog input channels that are user selectable per channel for voltage or current to support a variety of monitoring and controlling applications 1746 NIO41 and NIO4V Analog Combination Modules The NIO4I and NIO4V Analog Combination I O modules provide two input and two output channels in a single slot module The 1746 NIO4I module contains two current or voltage inputs user selectable per channel and two current outputs The 176 NIO4V module contains two current or voltage inputs user selectable per channel and two voltage outputs 1746 NO4I and NO4V Analog Output Modules The NO4I and NO4V Analog Output Modules provide 4 analog output channels The NO4I module contains four current outputs The NO4V module contains four voltage outputs Both of these modules support a variety of monitoring and controlling applications Catalog 1746 Input Channels per Output Channels per Backplane Current Draw External 24V dc Power Module Module 5V max 24V max Supply Tolerances NI4 4 differential voltage or NA 35 mA 85 mA NA current selectable per channel not individually isolated NIO4I 2 differential voltage or 2 current outputs not 55 mA 145 mA NA current selectable per individually isolated channel not individually isolated NIO
29. slot away from ac or high voltage dc modules Wiring Your e in the chassis closest to the bottom of the enclosure where the SLC 500 system is Analog Module installed e away from the chassis power supply if installed in a modular system ATTENTION Never install remove or wire modules with power applied to the chassis or devices wired to the modules Publication 1746 UMO005B EN P June 2004 2 4 Quick Start for Experienced Users Make sure system power is off then insert the analog module into your 1746 chassis In this example procedure local slot 1 is selected To w w W Ro WH WK ww WS eee eee Top and Bottom Module Release s al Wire the module Reference Important Follow these guidelines when wiring the module Chapter 3 Installing and e Use shielded communication cable Belden 8761 and keep length as short as possible Wiring Your Analog Module e Connect only one end of the cable shield to earth ground e Channels are not isolated from each other All analog commons are connected together internally e The module does not provide power for analog inputs e Use a power supply that matches the transmitter sensor specifications Publication 1746 UMO005B EN P June 2004 Quick Start for Experienced Users 2 5 NI4 T analog source Jea NOO O00000 000 OOO Jumper unused inputs NIO4I amp NIO4V ana
30. than 32767 the SCL instruction overflows causing error 0020 Minor Error Bit and places 32767 in the Destination This occurs regardless of the current offset The third example uses the SCP scale with parameters instruction available in the SLC 5 03 OS302 or later SLC 5 04 OS401 or later and SLC 5 05 only Publication 1746 UMO005B EN P June 2004 6 4 Programming Examples Using Standard Math Rung 2 0 Check for below allowable range Below range flag LES B3 LESS THAN Source A E141 o Source B 14344 Rung 2 1 Check for above allowable range Above range flag GRT B3 GREATER THAN _ Source A I 1 1 1 Source B 16383 Rung 2 2 Turn on the below range alarm output when analog input is below acceptible range Below Below range flag range alarm B3 0 2 E 0 0 Rung 2 3 Turn on the above range alarm output when analog input is above acceptible range Above Above range flag range alarm B3 0 2 1 1 Ladder logic continue
31. to go online with the programming device The slot in the chassis where the analog module is located is not operational Remove the power from the SLC 500 system move the analog module to another slot and restore power If it appears that the slot is defective replace the chassis e The analog module is defective Publication 1746 UM005B EN P June 2004 5 4 Testing Your Module Publication 1746 UMO005B EN P June 2004 Testing Analog Inputs Before testing the analog module input channels the SLC 500 system must be installed and tested according to the SLC 500 Fixed Hardware Style Installation amp Operation Manual publication 1747 6 21 or the SLC 500 Modular Hardware Style User Manual publication 1747 UM011 The processor must be connected to a programming device properly configured and must have no rungs in its ladder program The analog module LED must also be illuminated ATTENTION The procedure described in this section for testing analog module input channels assumes that all I O module outputs that normally activate prime movers or other potentially dangerous devices have been disconnected from these devices gt Do not attempt to test the analog module input channels unless prime movers and or other potentially dangerous devices are disconnected from the I O modules The devices connected to the analog module input channels are referred to as sensors If the sensors can be manually varied ove
32. to monitor input and output data the binary radix is the only available option To view the analog input and output data in decimal radix the data must be moved to an integer data file Converting Analog Input Data Analog inputs convert current and voltage signals into 16 bit two s complement binary values The table below identifies the current and voltage input ranges for the input channels the number of significant bits for the applications using input ranges less than full scale and their resolution Voltage Current Range Decimal Representation Number of Significant Bits Resolution per LSB 10V de to 10V de 1LSB 32 768 to 32 767 16 bits 305 176 pV 0 to 10V de 1LSB 0 to 32 767 15 bits 0 to 5V de 0 to 16 384 14 bits 1 to 5V de 3 277 to 16 384 13 67 bits 20 mA to 20 mA 16 384 to 16 384 15 bits 1 22070 pA 0 to 20 mA 0 to 16 384 14 bits 4 to 20 mA 3 277 to 16 384 13 67 bits To determine an approximate voltage that an input value represents use one of the following equations Publication 1746 UMO005B EN P June 2004 10V 32 768 x input value input voltage V The Input Value is the decimal value of the word in the input image for the corresponding analog input For example if an input value of 16 021 is in the input image the calculated input voltage is 10V 32 768 x 16 201 4 889221 V It should be noted that this is the calculated value Th
33. using your programming software a list of the different I O modules including the analog modules is most likely provided for you If a list is not provided you need to enter the module identification code when configuring the slot Refer to the table below for the appropriate analog module ID code Using the Hand Held Terminal HHT firmware v1 1 enter the proper MODULE ID CODE under the other selection Version 2 0 or later of the HHT firmware provides a list of I O modules Refer to the following publications for complete information e your programming software s user manual e the Hand Held Terminal User Manual Catalog No Module ID Code 1746 NI4 4401 1746 NI04 3201 1746 NIO4V 3202 1746 NO4I 5401 1746 NO4V 5402 Publication 1746 UMO005B EN P June 2004 4 2 Module Operation and System Considerations Publication 1746 UMO005B EN P June 2004 Addressing Analog Modules NI4 Each input channel of the NI4 is addressed as a single word in the input image table The NI4 uses a total of 4 words in the input image table The converted values from channels 0 through 3 are addressed as input words 0 through 3 respectively for the slot where the module resides EXAMPLE If you want to address input channel 2 of the NI4 in slot 4 you would address it as input word 2 in slot 4 4 2 NIO4I and NIO4V Each input channel of the NIO4I and NIO4V is addressed as a single word in the input ima
34. voltage input specifications A 4 voltage output specifications A 6 wiring 3 10 B Bit Level Addressing 4 4 C Calculating the Software Calibration A 2 Calibrating an Analog Input Channel A 1 common techniques used in this manual Bo Configuring Your Module External Power Switch for the 1746N04l and NO4V 3 6 Switch Settings for the 1746NI04I and NIO4V 3 5 Index Converting Analog Input Data 4 6 Converting Analog Output Data 4 7 Current Output Circuit for 1746NI041 Modules A 1 D Disconnect Prime Movers 5 2 E equipment needed 2 1 G getting started overview 2 1 getting started quickly 2 1 Input Channel Filtering 4 14 Input Circuit for 1746NI4 NIO4I and NIO4V Modules A 1 Input Response to Slot Disable 4 13 installation getting started 2 1 manuals related P 2 minimizing electrical noise 3 15 Module Input and Output Circuits Current Output Circuit for 1746NI041 Modules A 1 Input Circuit for 1746NI4 NIO4I and NIO4V Modules A 1 Voltage Output Circuit for 1746NI04V Modules A 1 module installation 3 6 Monitoring Input and Output Data 4 5 Negative Decimal Values A 2 NonRetentive Analog Output Example 4 11 0 Output Response to Slot Disable 4 13 P Publication 1746 UMO005B EN P June 2004 2 Index Positive Decimal Values A 1 power requirements for a fixed controller 3 2 power requirements for a modular controller 3 2 PowerUp the SLC 500 System 5 3 Processor Update of Analog Dat
35. 00 Fixed Hardware Style Installation amp Operation Manual publication 1747 6 21 Catalog Number Backplane Current Draw External 24V dc Power 5V max 24V max Supply Tolerance 1746 Nl4 35 mA 85 mA NA 1746 NI04I 55 mA 145 mA NA 1746 NIO4V 55 mA 115 mA NA 1746 NO4I 55 mA 195 mA 24 10 at 195 mA max 21 6 to 26 4V de 1746 NO4V 55 mA 145 mA 24 10 at 145 mA max 21 6 to 26 4V de o Required for some applications if SLC 24V power is not readily available Publication 1746 UM005B EN P June 2004 Quick Start for Experienced Users 2 3 3 Configure the module using the DIP switches analog inputs only Reference Each analog input channel can be configured for either voltage or current Locate the DIP Chapter 3 switches on your module and set them for your application Installing and Wiring Your Analog Module ON Configures channel for current input fs Off Configures channel for voltage input Current Switch 1 Channel 0 1746 NI4 o Ien Switch 2 Channel 1 i i I A A Switch 3 Channel 2 Switch 4 Channel 3 Voltage Current 1746 NIO41 NIO4V Switch 1 Channel 0 o 12 h r r Switch 2 Channel 1 Voltage External 1746 NO4I NO4V 24V de Sw1 Power Selector Backplane a Install your module Reference When selecting a slot for an analog module position the module Chapter 3 Installing and e in a
36. 32 767 or lt 32 768 cases it is easier to shift the linear relationship along the input value axis and reduce the values This example is similar to the situation described in Example 2 except the 4 mA to 20 mA signal is scaled to a value between 90 100 The NIOA4I is located in slot 2 and the output device is wired to channel 0 The following graph displays the linear relationship 20 mA 31208 scaled max Scaled Value 4 mA 6242 scaled min 90 100 input min input max Input Value Calculating the Linear Relationship Use the following equations to calculate the scaled units Scaled value input value x slope offset Slope scaled max scaled min input max input min 31 208 6 242 100 90 24 966 10 Offset scaled min input min x slope 6242 90 x 24 966 10 218 452 Scaled value input value x 24 966 10 218 452 Notice the offset value is less than 32 768 Publication 1746 UM005B EN P June 2004 Programming Examples 6 15 The following graph shows the shifted linear relationship Notice that the resulting offset value is reduced 20 mA 31208 scaled max Scaled Value 4 mA 6242 scaled min 90 100 input min input max Input Value Calculating the Shifted Linear Relationship Use the following equations to recalculate the linear relationship Scaled value input value input min x slope offset Slope scaled max scal
37. 4V 2 differential voltage or 2 voltage outputs not 55 mA 115 mA NA current selectable per individually isolated channel not individually isolated N04 NA 4 current outputs not 55 mA 195 mA 24 10 at 195 mA max individually isolated 21 6 to 26 4V de NO4V NA 4 voltage outputs not 55 mA 145 mA 24 10 at 145 mA max individually isolated 21 6 to 26 4V de 1 Required for some applications if SLC 24V power is not readily available Publication 1746 UMO005B EN P June 2004 For more specification information refer to Appendix A Required Tools and Equipment Chapter 2 Quick Start for Experienced Users This chapter can help you to get started using analog The procedures are based on the assumption that you have an understanding of SLC 500 products You should understand electronic process control and be able to interpret the ladder logic instructions required to generate the electronic signals that control your application Because it is a start up guide for experienced users this chapter does not contain detailed explanations about the procedures listed It does however reference other chapters in this book where you can get more information If you have any questions or are unfamiliar with the terms used or concepts presented in the procedural steps always read the referenced chapters and other recommended documentation before trying to apply the information This chapter e tells you what tools
38. 77 Sa a a A Publication 1746 UMO005B EN P June 2004 B3 0 MOV MOVE Source o Dest O 1 0 frm no Ladder logic continued on the next page Rung 2 1 Check for above range GRT B3 GREATER THAN 4 Source A I 1 0 1 Source B 16384 MOv MOVE Source 8192 Dest O 1 0 Rung 2 2 Scale the analog input for the analog output Multiply by the scaled range B3 B3 MUL MULTIPLY o 1 Source A I 1 0 Source B 8192 Dest N7 0 o Divide result by the input range DDV DOUBLE DIVIDE Source 13107 Dest N7 0 o Add offset ADD ADD Source A N7 0 o Source B 2048 Dest O 1 0 Clear flt bit from overflow S 5 U 0 Rung 2 3 Se e END 7 3 3 5 aa Programming Examples 6 23 Publication 1746 UMO005B EN P June 2004 6 24 Programming Examples Scaling and Range C
39. Bits per LSB Oto21mA 1LSB_ 0 to 32 764 13 bits 2 56348 pA 0 to 20 mA 0 to 31 208 12 92 bits 4 to 20 mA 6 242 to 31 208 12 6 bits Publication 1746 UM005B EN P June 2004 4 8 Module Operation and System Considerations Publication 1746 UMO005B EN P June 2004 Voltage Range Decimal Number of Resolution per Representation for Significant LSB Output Word Bits 10 to 10V de 32 768 to 32 764 14 bits 1 22070 mV 0 to 10V de 0 to 32 764 13 bits 0 to 5V de 0 to 16 384 12 bits 1 to 5V dc 3 277 to 16 384 11 67 bits Use the following equation to determine the decimal value for the current output 32 768 mA X Desired Current Output mA Output Decimal V alue For example if an output value of 4 mA is desired the value to be put in the corresponding word in the output image can be calculated as follows 32 768 21 mA Note The actual resolution for analog current outputs is 2 56348 uA per LSB where the LSB position in the output word is indicated as x 4mA 6242 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 X Bit Not Used Use the following equation to determine the decimal value for the voltage output 32 768 Tovde Desired Voltage Output V dc Output Decimal V alue For example if an output value of 1V de is desired the value to be put in the corresponding word in the output image can be calculated as follows 32 768 10V de Note The actual resol
40. Final V alue Module Operation and System Considerations 4 15 If power line noise is coupling into the input signal through the input cable the proper use of differential inputs reduces the effect of noise With differential inputs noise couples into both the plus and minus inputs where it is attenuated by over 105 dB 60 Hz common mode rejection The affect of the filter with respect to time can be seen by examining the step response of the input channel The following illustration shows the response of the input value versus time when a step change is made in the voltage or current at the input terminal The response of the filter demonstrates no overshoot and rapid settling time The input value settles to within 95 of the final value in 60 milliseconds independent of the input magnitude EXAMPLE If the input instantaneously changes from 0 to 10 volts the value converted by the analog module after 60 milliseconds is 9 5 volts Within this time the analog module updates the input data value in memory with an intermediate response every 512 microseconds 100 95 80 60 40 20 0 40 60 80 120 Time ms Publication 1746 UMO005B EN P June 2004 4 16 Module Operation and System Considerations Publication 1746 UMO005B EN P June 2004 Testing the SLC 500 System Chapter 5 Testing Your Module The purpose of this chapter is to help you isolate problems i
41. I Specification 1746 NI04I N04I Converter Resolution 14 bit Location of LSB in 1 0 image word 0000 0000 0000 01XX Non linearity 0 05 Conversion Method R 2R Ladder Step Response 2 5 ms at 95 Load Range 0 to 500 Ohms Maximum Load Reactance 100 pH Current Output Coding 0 to 21 mA 1 LSB 0 to 32764 Output Range Normal 0 to 20 mA Overrange Capability 5 0 to 21 mA 1 LSB Resolution 2 56348 pA per LSB Full Scale 21 mA Overall Accuracy at 25 C 77 F max 0 298 of full scale Overall Accuracy at 0 to 60 C 32 to 140 F max 0 541 of full scale Overall Accuracy Drift max 70 ppm C of full scale Gain Error at 25 C 77 F max 0 298 Gain Error at 0 to 60 C 0 516 32 to 140 F max Gain Error Drift max 62 ppm C Offset Error at 25 C 77 F max 10 LSB Offset Error at 0 to 60 C 12 LSB 32 to 140 F max Offset Error Drift max 0 06 LSB C Publication 1746 UM005B EN P June 2004 A 6 Specifications Voltage Output Specifications for NIO4V and NO4V Publication 1746 UMO005B EN P June 2004 Specification 1746 NIO4V NO4V Converter Resolution 14 bit Location of LSB in I O image word 0000 0000 0000 01XX Non linearity 0 05 Conversion Method R 2R Ladder Step Response 2 5 ms at 95 Load Range 1K to Ohms Maximum Load Curr
42. SSSeSSSSe SaaS Ladder logic continued on the next page Publication 1746 UMO005B EN P June 2004 Programming Examples 6 17 Rung 2 2 Scale values in the 90 100 range to the decimal range for the 4 20 mA analog output Subtract the input min B3 B3 SUB SUBTRACT o 0 Source A N7 0 o Source B 90 Dest N7 1 o Multiply by the scaled range MUL MULTIPLY er Source A N7 1 o Source B 24966 Dest N7 1 o Divide result by input range DDV DOUBLE DIVIDE Source 10 Dest N7 1 o Add offset ADD ADD Source A N7 1 o Source B 6242 Dest 0 2 0 Clear flt bit from overflow S 5 U 0 Rung 2 3 Publication 1746 UMO005B EN P June 2004 6 18 Programming Examples Using the Scale with Parameters SCP Instruction Rung 2 0 N7 0 contains percentage of valve open If this value is less than 90 move the minimum value to the analog output 6242 decimal 4 mA at the analog output Check for B
43. U Alarm IMIT TEST CIRC 33 0 Turn ON Alarm F ok oe Limit Exceeded es id ihe High Lim 1 i Remainder of Program END Module Operation and System Considerations 4 13 Response to Slot Disable You have the ability to disable any slot in the chassis using the processor Before disabling any slot containing an analog module it is important to consider how the analog module will respond when the slot is disabled ATTENTION Make sure that the implications of disabling an analog module slot are clearly understood before utilizing this feature The response to slot disable for inputs and outputs is the same for all the analog modules Input Response to Slot Disable The module continues to update the input values to the processor However the processor does not read inputs from a module that is disabled Therefore when the processor disables the analog module slot the module inputs appearing in the processor image table remain in their last state When the processor re enables the analog module slot the current state of the module inputs are received by the processor during the subsequent scan Output Response to Slot Disable The processor may change the analog module output data as it appears in the processor image table However this data is not transferred to the analog module Instead the analog module holds its outputs in their last state When the slot is re enabled the data that appears in the proces
44. a 4 5 publications related P 2 0 Quick Start for Experienced Users 2 1 related publications P 2 Required Tools and Equipment 2 1 Response to Slot Disable 4 13 Retentive Programming Option 4 9 S Scaling and Range Checking of Analog Inputs and Outputs Calculating the Linear Relationship 6 21 Using SCL Instruction 6 25 Using Standard Math Instructions 6 22 Using the Scale with Parameters SCP Instruction 6 26 Scaling Offset when gt 32 767 or 32 768 Publication 1746 UM005B EN P June 2004 Calculating the Linear Relationship 6 14 Calculating the Linear Shifted Relationship 6 15 Using Standard Math 6 16 Using the Scale with Parameters SCP Instruction 6 18 startup instructions 2 1 system start up procedures 5 1 T terminal block removing 3 7 Testing Analog Inputs 5 4 Testing Analog Outputs 5 6 Testing the SLC 500 System 5 1 tools needed 2 1 Two s Complement Binary Numbers Positive Decimal Values A 1 A 2 V Voltage Output Circuit for 1746N104V Modules A 1 Ww Wiring Considerations Grounding Your Cable 3 9 Index 3 Publication 1746 UMO005B EN P June 2004 Rockwell Automation Rockwell Automation provides technical information on the web to assist you in using our products At http support rockwellautomation com you can Support find technical manuals a knowledge base of FAQs technical and application notes sample code and links to software service packs and a MySupport feature that you can custo
45. a software calibration the overall error is reduced to 3 LSB or a code range of 16381 to 16387 The graph on the next page shows the linear relationship between the input value and the resulting scaled value The values in this graph are from the example program Publication 1746 UMO005B EN P June 2004 C 2 Optional Analog Input Software Calibration Publication 1746 UMO005B EN P June 2004 20 mA 16384 scale Hi Scaled Value 4 mA 3277 scale low 3267 16396 Low Value from card Hi Value from card Input Value ScaledValue vs Input Value Calculating the Software Calibration Use the following equation to perform the software calibration Scaled Value input value x slope offset Slope scaled max scaled min input max input min Offset Scaled min input min x slope Procedure 1 Place your SLC 500 system in the normal operating temperature Ensure that adjacent I O modules in your system do not cause temperature fluctuations For example place high power and random load I O modules away from your analog input module 2 Determine the scaled high and low values you wish to use in your application In this example scaled high is 16384 and scaled low is 3277 3 Using an analog input calibration source or your system s input device placed at the 4 mA position capture the low value by energizing the calibrate low input Ensure that your low value lies within the conversion range
46. able is connected to the terminal block e If the foil shield and drain wire are grounded at the chassis mounting tab make sure End 1 is connected to the terminal block 7 Repeat steps 1 through 6 for each channel on the analog module Jumper the unused plus minus and common terminals of each input channel individually Unused output and common terminals should be left unconnected The following illustrations depict the proper cable preparation for END 1 and END 2 Shrink wrap is applied to each cable end Make sure the foil shield and drain wires on END 1 are long enough to reach their designated earth ground points Foil Shield and Drain Wire Insulation Black Wire Clear Wire Insulation Black Wire Clear Wire Publication 1746 UM005B EN P June 2004 3 12 Installing and Wiring Your Analog Module Labeling and Installing the Terminal Block Grounding the Foil Shields and Drain Wires Publication 1746 UMO005B EN P June 2004 The terminal block has a write on label Labeling the terminal block will help ensure that it is installed on the correct module Note The black dot on the terminal block label indicates the position of terminal 0 Once you have wired your analog module and properly labeled the terminal block install the terminal block on the analog module To install the terminal block 1 Align the terminal block with the receptacle 2 Insert the terminal block and press firmly a
47. am The analog module LED must be illuminated The procedure described in this section for testing analog module output channels assumes that all I O module outputs that normally activate prime movers or other potentially dangerous devices have been disconnected from these devices Do not attempt to test the analog module output channels unless prime movers and or other potentially dangerous devices are disconnected from the I O modules The devices connected directly to the analog module outputs are referred to as actuators If the actuators do not affect prime movers or initiate any other potentially dangerous operation use these devices to test the outputs If the actuators affect prime movers or initiate a potentially dangerous operation use a voltmeter to test the voltage outputs and an ammeter to test the current outputs Note that these meters have some inherent error of their own In the latter case disconnect actuators at the analog module outputs to test the terminal blocks The following procedure applies to either of the previous situations 1 Determine the boundary conditions for the analog module output channel For example if the output channel is connected to an actuator that has an input range of 1 volt to 5 volts the boundary conditions are 1 volt dower and 5 volts upper 2 Using the formulas from page calculate the output decimal values that must be entered into the processor image table to pr
48. annel The following symbols are used in this example Cal_Lo I 1 0 0 Cal_Hi 1 1 0 1 Calibrate I 1 0 2 Conversion N10 0 3 Enable Analog_In 1 2 0 Lo_Value N10 1 Hi_Value N10 2 Scale_Hi N10 3 Scale_Lo N10 4 Scale_Span N10 7 Span N10 9 Slope_x10K N10 18 Offset N10 19 Analog_Scl N10 20 Rung 2 2 Calibrate Ter Optional Analog Input Software Calibration Bs MOV MOVE Source ANALOG IN 8000 Dest LO VALUE 3267 ANEI ATE TEE MOV Sas MOVE Source ANALOG IN 8000 Dest HI_VALUE 16396 ee Pees tester eeeees SUB SUBTRACT Source A HI _VALUE 16396 Source B LO VALUE 3267 Dest SPAN 13129 Poe SSS SSS SSS See SUB SUBTRACT Source A SCALE HI 16384 Source B SCALE LO 3277 Dest SCALE SPAN 13107 Pisses sSSSSsosees MUL oss sso SsSseseScee ese MULTIPLY Source A SCALE _SPAN 13107 Source B 10000 Dest N10 16 32767 Pisses e sSSsasosaSese see DDV DOUBLE DIVIDE Source SPAN 13129 Dest SLOPE _X10K 9983 Posse T Selo Sennen C 5 Ladder logic continued on the next page Publication 1746 UMO005B EN P June 2004 C 6 Optional Analog Input Software Calibration Publication 1746 UMO005B EN P June 2004 Rung 2 3 Conversion Enable
49. d on the next page Publication 1746 UMO005B EN P June 2004 Rung 2 4 Programming Examples 6 5 Scale the analog input value and process the result only when it is within the acceptible range Below Above Multiply range flag range flag by the scaled range B3 B3 4 MUL MULTIPLY o 1 Source A Isti Source B 400 Dest N7 0 o Passa Sse coe see Divide result by input range DDV DOUBLE DIVIDE Source 32767 Dest N7 0 of p Add offset N7 0 cont ains proce ss tempera ture ADD ADD Source A N7 0 of Source B 100 Dest N7 0 oj S Clear flt bit from overflow S 5 U 0 Rung 2 5 END Publication 1746 UM005B EN P June 2004 6 6 Programming Examples Using the Scale SCL Instruction Rung 2 0 Check for below allowable range Rung 2 1 Check for above Rung 2 2 Turn on the below range alarm output when the analog input is below the acceptible range Below range flag B3 Rung 2 3 Turn on the above range alarm output when the analog input is above the acceptible range Above range flag B3 Rung 2 4 Scale analog input va
50. e actual value may vary within the accuracy limitations of the module Module Operation and System Considerations 4 7 To determine an approximate current that an input value represents you can use the following equation 20 mA 16 384 The Input Value is the decimal value of the word in the input image for the corresponding analog input x input value input current mA For example if an input value of 4096 is in the input image the calculated input current is 20 mA 16 384 It should be noted that this is the calculated value The actual value may vary within the accuracy limitations of the module x 4096 5 mA Converting Analog Output Data Analog outputs convert a 16 bit two s complement binary value into an analog output signal Because the analog output channels have a 14 bit converter the 14 most significant bits of this 16 bit number are the bits that the output channel converts The NIO4I and NO4I support two and four current outputs respectively ranging from 0 mA to a maximum of 21 mA The NIO4V and NO4V support two and four voltage outputs respectively ranging from 10 to 10 Volts dc The following tables identify the current and voltage output ranges for the output channels the number of significant bits for the applications using output ranges less than full scale and their resolution Current Range Decimal Representation Number of Resolution for Output Word Significant
51. e module whether the programming rung is true or false If an SLC 500 system detects a fault condition the analog outputs reset to zero The data in the Output Image table is retained during the Publication 1746 UMO005B EN P June 2004 4 10 Module Operation and System Considerations Publication 1746 UMO005B EN P June 2004 fault Once the fault condition is corrected and the major fault bit in the processor is cleared the retained data is sent to the analog output channels If you choose not to use the retentive programming option retained data is not sent to the output channels The following section provides example program options for retentive data and non retentive data Retentive Analog Output Example If a modular system is configured with the CPU in slot 0 a discrete I O module in slot 1 and an analog output module in slot 2 the following ladder logic rung can be programmed MOV L1s 2 0 0 j MOVE Source 32767 Dest 00 2 0 When bit 0 of the discrete I O module turns ON the rung is true and the value 32767 is moved into the Output Image table location that corresponds with analog output channel 0 in slot 2 At the end of the scan this value is transferred to the module where it is converted to the appropriate voltage or current depending on the type of module used If on the next program scan the rung becomes false the MOVE of the value of 32767 to the Output Image table doe
52. ed min input max input min 31 208 6 242 100 90 24 966 10 Offset scaled min 6 242 Scaled value input value 90 x 24 966 10 6242 Since the slope is greater than 3 2767 only standard math can be used for the ladder diagram with SLC 500 fixed SLC 5 01 5 02 5 03 OS300 and 301 and 5 04 OS400 The following ladder diagram prevents a processor fault by unlatching the mathematical overflow bit S2 5 0 before the end of the scan Refer to the example ladder diagram on the next page Following this example is another ladder diagram performing the same function but using the SCP scale with parameters instruction available only in the SLC 5 03 OS302 SLC 5 04 OS401 and SLC 5 05 Publication 1746 UMO005B EN P June 2004 6 16 Programming Examples Using Standard Math Rung 2 0 N7 0 contains the percentage of the valve open Check for below range LES B3 LESS THAN Source A N7 0 0 o Source B 90 MOv MOVE Source 6242 Dest 0 2 0 i SARS Se Gr Rung 2 1 Check for above range GRT B3 GREATER THAN Source A N7 0 1 o Source B 100 MOV MOVE Source 31208 Dest 0 2 0 PeSeS
53. elow below range flag range LES B3 LESS THAN Source A N7 0 0 o Source B 90 Minimum analog output value MOV MOVE Source 6242 Dest 0 2 0 Rung 2 1 N7 0 contains percentage of valve open If this value is greater than 100 move the maximum value to the analog output 31208 decimal 20 mA at the analog output Publication 1746 UMO005B EN P June 2004 GREATER THAN gt Check for above range GRT Source A N7 0 o Source B 100 Above range flag Minimum analog output value MOVE Source 31208 Ladder logic continued on the next page Programming Examples 6 19 Rung 2 2 Scale values in the 90 to 100 range to the decimal range for the 4 20 mA analog output Below Above Scale for the analog output range flag range flag B3 B3 SCP SCALE W PARAMETERS 0 1 Input N7 0 0 Input Min 90 Input Max 100 Scaled Min 6242 Scaled Max 31208 Scaled Output 0 2 0 e sss SSS See sess sess ssSs Rung 2 3 Fa END 7 7 a a Publication 1746 UM005B EN P June 2004 6 20 Programming Examples Scaling and Range
54. ent 10 mA Maximum Load Reactance 1 uF Voltage Output Coding 10 to A0V dc 1 32 768 to 32 764 LSB Output Range Normal 10 to 10 volts 1 LSB Resolution 1 22070 mV per LSB Full Scale 10V de Overall Accuracy at 25 C 77 F max 0 208 of full scale Overall Accuracy at 0 to 60 C 32 to 140 F max 0 384 of full scale Overall Accuracy Drift max 54 ppm C of full scale Gain Error at 25 C 77 F max 0 208 Gain Error at 0 to 60 C 0 374 32 to 140 F max Gain Error Drift max 47 ppm C Offset Error at 25 C 77 F max 9 LSB Offset Error at 0 to 60 C 11 LSB 32 to 140 F max Offset Error Drift max 0 05 LSB C Appendix B Two s Complement Binary Numbers The SLC 500 processor memory stores 16 bit binary numbers Two s complement binary is used when performing mathematical calculations internal to the processor Analog input values from the analog modules are returned to the processor in 16 bit two s complement binary format For positive numbers the binary notation and two s complement binary notation are identical As indicated in the figure on the next page each position in the number has a decimal value beginning at the right with 2 and ending at the left with 2 Each position can be 0 or 1 in the processor memory A 0 indicates a value of 0 a 1 indicates the
55. ertain wires are secure ATTENTION Care should be taken to avoid connecting a voltage source to a channel configured for a current input Improper module operation or damage to the module can occur 3 Make sure that the shield for the cable used to wire the analog module is properly grounded Refer to chapter 3 for additional information Do not connect the Belden 8761 foil shield and drain wire to the analog module terminal block The foil shield and drain wire must be connected to earth ground which is not available on the analog module terminal block 4 Make certain that the removable terminal block on the analog module is secured on the module Disconnect Prime Movers Motion Devices During the following test procedures the processor is energized As a safety precaution make sure that machine motion does not occur To achieve this e Disconnect the motor wires at the motor starter or the motor itself This allows you to test the operation of the starter coil verifying that your output circuit is wired correctly and functioning e To disconnect a solenoid disengage the valve leaving the coil connected Testing Your Module 5 3 In some instances you may not be able to disconnect a device the preferred way In these cases open the output circuit at a point as close as possible to the motion causing device For example your output might be a relay coil which in turn energizes a motor starter If you canno
56. fications 2 Wire Transmitter Transmitter Transmitter Supply Signal GND O ANL COM Transmitter Signal O ANL COM Publication 1746 UM005B EN P June 2004 Installing and Wiring Your Analog Module 3 15 Wiring Schematic for Single ended Analog Input Connections When wiring single ended analog input devices to the analog input card the number of total wires necessary can be limited by using the ANALOG COMMON terminal Note that differential inputs are more immune to noise than single ended inputs Transmitter Supply O Signal nee INO Transmitter ANL COM 3P O Signa N14 N1 Transmitter ANL COM O Signal N24 IN 2 Transmitter ANL COM Supply Signal Ground IN3 IN 3 ANL COM Minimizing Electrical Inputs on analog modules employ digital high frequency filters that significantly reduce the effects of electrical noise on input signals Noise on Analog Modules However because of the variety of applications and environments where analog modules are installed and operating it is impossible to ensure that all environmental noise will be removed by the input filters Although it is not the purpose of this manual to address SLC 500 system procedures several specific steps can be taken to help reduce the effects of environmental noise on analog signals e install the SLC 500 system in a properly rated i e NEMA enclosure Make sure that the SLC 500 system is properly grou
57. ge table and each output channel of the module is addressed as a single word in the output image table Both the NIO4I and NIO4V use a total of 2 input words and 2 output words The converted input values from input channels 0 and 1 are addressed as words 0 and 1 of the slot where the module resides The output values for the output channels 0 and 1 are addressed as output words 0 and 1 of the slot where the module resides EXAMPLE If you want to address output channel 0 of the NIO4I in slot 3 you would address it as output word 0 in slot 3 O 3 0 NO4I and NO4V Each output channel of the NO4I and NO4V is addressed as a single word in the output image table Both modules use a total of 4 output words The converted output values from output channels 0 through 3 are addressed as words 0 through 3 respectively for the slot where the module resides EXAMPLE If you want to address output channel 3 of the NO4I in slot 3 you would address it as output word 3 in slot 3 O 3 3 Module Operation and System Considerations 4 3 The following illustration shows I O addressing for the analog modules SLC 500 SLC 5 01 or 5 02 Data Files 1746 NI4 Address Analog Input Module Le l e 0 Input 1 77 f Image l e 1 4 words i l e 2 3 l e 3 1746 NIO4I amp NIO4V SLC 500 lave SLC 5 01 or 5 02 Analog Combination Modules arses Data Files Output Word 0 0 e 0 Scan Word 1 0 e 1 Input Channel 0 Word 0 l e 0 Input Channel 1 Word 1 e
58. h 10 Hz Step Response 60 ms at 95 Conversion Method Delta Sigma Modulation Impedance to ANL COM 380K ohms 500K ohms Impedance channel to channel 760K ohms 1M ohms 1 The value listed is for Series B and greater For Series A the impedance to ANL COM is 500K Ohms 2 The value listed is for Series B and greater For Series A the impedance channel to channel is 500K Ohms Publication 1746 UMO005B EN P June 2004 Specifications A 3 Current Loop Input Specifications for N14 NIO4I and NIO4V Specification 1746 N14 NI04I NIO4V Input Range Normal Operation 20 to 20 mA Absolute Maximum Input Current 30 to 30 mA Absolute Maximum Input Voltage 7 5V de or 7 5V ac RMS Current Input Coding 20 to 20 mA 16 384 to 16 384 Input Impedance 250 Ohms Resolution 1 22070 pA per LSB Full Scale 20 mA Overall Accuracy at 25 C 77 F max 0 365 of full scale Overall Accuracy at 0 to 60 C 32 to 140 F max 0 642 of full scale Overall Accuracy Drift max 79 ppm 5 C of full scale Gain Error at 25 C 77 F max 0 323 Gain Error at 0 to 60 C 0 556 32 to 140 F max Gain Error Drift max 67ppm C Offset Error at 25 C 77 F max 7 LSB lin 0 Vem 0 Offset Error at 0 to 60 C 14 LSB 32 to 140 F max lin 0 Vem 0 Offset Error Drift ma
59. hecking of Analog Inputs and Outputs Publication 1746 UMO005B EN P June 2004 The scaling instruction available in the SLC 5 02 processor is used to realize a more efficient program The scaling instruction uses the same multiply divide and add algorithm but it does so with a single rate instead of the scaled range and input range values The rate is determined by Rate scaled range input range x 10 000 For the programming example the rate 6250 Using SCL Instruction Programming Examples Rung 2 0 Check for below range LES B3 LESS THAN a t Source A I 1 0 0 Source B 3277 MOV MOVE Source o Dest 0 1 0 pressessesdnhntssssn Rung 2 1 Check for above range GRT B3 GREATER THAN aaa t Source A I 1 0 1 Source B 16384 MOV MOVE Source 8192 Dest 0 1 0 pS See RRS See eee Rung 2 2 Scale the analog input for the analog output B3 B3 SCL SCALE 0 1 Source I 1 0 Rate 10000 6250 offset 2048 Dest 0 1 0 o Rung 2 3 Se Set eS SSS Sree esse Sess Sree aa tEND 2259 9S SSS SS asa a Se see S ss ss 6
60. hierarchical information e Italic type is used for emphasis Your Questions or Comments on this Manual If you find a problem with this manual or you have any suggestions for how this manual could be made more useful to you please contact us at the address below Rockwell Automation Automation Control and Information Group Technical Communication Dept A602V P O Box 2086 Milwaukee WI 53201 2086 Publication 1746 UMO005B EN P June 2004 4 Preface Publication 1746 UMO005B EN P June 2004 How to Use Analog Types of Analog Modules Chapter 1 Overview This chapter describes how analog is used and provides two application examples of analog The types of available analog modules and their related specifications are also described Analog refers to the representation of numerical quantities by the measurement of continuous physical variables Analog applications are present in many forms The following application shows a typical use of analog In this application the processor controls the amount of fluid placed in a holding tank by adjusting the percentage of the valve opening The valve is initially open 100 As the fluid level in the tank approaches the preset point the processor modifies the output to degrade closing the valve 90 80 adjusting the valve to maintain a set point Analog Output Analog 0 Module Level Sensor x Analog Input The following sections provide an overview
61. led min 0 100 input min input max Input Value Calculating the Linear Relationship Use the following equations to calculate the scaled output value Scaled value input value x slope offset Slope scaled max scaled min input max input min 31 208 6 242 100 0 24 966 100 Offset scaled min input min x slope 6 242 0 x 24 966 100 6 242 Scaled value input value x 24 966 100 6 242 Publication 1746 UMO005B EN P June 2004 Programming Examples 6 9 The out of range limits are predetermined because any value less than 0 is 6 242 and any value greater than 100 is 31 208 The ladder logic checks for the out of range flag to verify that not less than 4 mA and not more than 20 mA is provided out of the analog output channel The percentage of valve opening may be input to the processor by e entering the data through a DTAM or HHT e MOVing the data from thumb wheels or a keypad possibly converting the data from BCD using FRD instruction The percentage of valve opening may be output for operator interface by e monitoring the data using a DIAM or HHT e MOVing the data to an output module as variable data to a Dataliner e converting the data to BCD using TOD instruction and MOVing it to an LED display Since the slope is greater than 3 2767 only standard math can be used for the ladder diagram with SLC 500 fixed SLC 5 01 5 02 5 03 OS300 or OS301 and 5 04
62. ler sei ee a A ee eR Ree E 3 2 Configuring Your Module 3 5 0 uo See eA 3 5 Switch Settings for the 1746 NI4 3 5 Switch Settings for the 1746 NIO4I and NIO4V 3 5 External Power Switch for the 1746 NO4I and NO4V 3 6 Choosing a Slot in the Chassis s 4 4 8 229 99 S pace as 3 6 Installing Your Module lt 4 ocean o4 ohne Gta h bbe bee oe 3 6 Removing the Analog Module Terminal Block 3 7 Wiring COnmsideralonss cya fs evan Dee RERAG Oe 3 8 System Wiring Guidelines occ sgn d a ba feel deme 3 9 Grounding Your Cable 30 hp BES Cad mae ee 4 3 9 Determining the Cable Lenethi 4 ae hw soe Sis 3 10 Wiring the Analog Module 9 430 uaa yee Rea eS weed 3 10 Labeling and Installing the Terminal Block 3 12 Grounding the Foil Shields and Drain Wires 3 12 Wiring Schematics for 2 3 and 4 Wire Analog Input TOV ICSS ojos ek pe and ao Gh ac bE td IG ANG dele HOR aoved 3 14 Wiring Schematic for Single ended Analog Input G2 al at GUL 6 oc Garam nar aera a ar ay le ore ek ee te a ae 3 15 Minimizing Electrical Noise on Analog Modules 3 15 Publication 1746 UMO005B EN P June 2004 Table of Contents ii Module Operation and System Considerations Testing Your Module Programming Examples Publication 1746 UM005B EN P June 2004 Chapter 4 Interface between the Module and the Processor 4 1 Entering Module ID Codes nannaa anaa 4 1 Addressing Analog Modules nonna anaana
63. log source E Jumper unused E inputs SOW ONO Aaw NSO O00 O00 000 OOO 24V de power supply if unused outputs NO4I amp NO4V external power is selected Cable length from external 24V dc power supply to analog gt Ext pwr module must be less than 10m sup LA 2O WD OF WN OO OO OO OO h ground Do not jumper Analog commons are internally connected unused outputs in the module Channels are not isolated from each other Publication 1746 UMO005B EN P June 2004 2 6 Quick Start for Experienced Users e Configure system 1 0 configuration Reference Configure your system I O configuration for the particular slot the analog module is in When Chapter 4 assigning an O module to a slot location select the module from the displayed list If not listed Module select OTHER at the bottom of the list and enter the module s ID code at the prompt Operation and System Considerations Catalog No Module ID Code 1746 NI4 4401 1746 NI04 3201 1746 NIO4V 3202 1746 NO4I 5401 1746 NO4V 5402 Check that the module is operating correctly Reference Chapter 5 Testing Your Module ATTENTION Machine motion during system checkout can be hazardous to personnel During all checkout procedures you must disconnect all devices which when energized might cause machine motion Apply power to the fixed or modular system The analog module LED red sho
64. log I O Modules 1746 IN008 Installation Instructions Information on reducing electrical noise System Design for Control of Electrical GMC RM001 Noise In depth information on grounding and wiring Allen Bradley Allen Bradley Programmable Controller 1770 4 1 programmable controllers Grounding and Wiring Guidelines A description of important differences between solid state Application Considerations for Solid State SGI 1 1 programmable controller products and hard wired electromechanical Controls devices An article on wire sizes and types for grounding electrical National Electrical Code Published by the National Fire Protection equipment Association of Boston MA A glossary of industrial automation terms and abbreviations Allen Bradley Industrial Automation AG 7 1 Glossary Publication 1746 UMO005B EN P June 2004 Preface 3 If you would like a manual you can e download an electronic version from the internet at www theautomationbookstore com http ab com manuals e order a printed manual by contacting your local distributor or Rockwell Automation representative visiting www theautomationbookstore com calling 1 800 963 9548 USA Canada or 001 330 725 1574 Outside USA Canada Common Techniques Used The following conventions are used throughout this manual in this Manual e Bulleted lists such as this one provide information not procedural steps e Numbered lists provide sequential steps or
65. lue and process the result only when it is within acceptible range Publication 1746 UMO005B EN P June 2004 LES LESS THAN Pa A A E E E Source A f e ea o Source B 14344 GRT GREATER THAN gate Source A I 1 1 o Source B 16383 Below range flag B3 EE eee eee j 0 Above range flag B3 ee eee jesse 1 Below range alarm O 2 0 Above range alarm 0 2 jise pi Below Above Scale range flag range flag analog input B3 B3 SCL SCALE o I Source mis Bape 2 0 2 1 0 Rate 10000 122 Offset 100 Dest N7 0 0 tooo Rung 2 5 SS Se END Programming Examples 6 7 Using Scale with Parameters SCP Instruction Rung 2 0 Check for below allowable range Below range flag LES B3 LESS THAN 4 Source A Tyas o o Source B 14344 o Rung 2 1 Check for above allowable range Above range flag GRT B3 GREATER THAN 4 Source A nee 1 o Source B 16383 o
66. mize to make the best use of these tools For an additional level of technical phone support for installation configuration and troubleshooting we offer TechConnect Support programs For more information contact your local distributor or Rockwell Automation representative or visit http support rockwellautomation com Installation Assistance If you experience a problem with a hardware module within the first 24 hours of installation please review the information that s contained in this manual You can also contact a special Customer Support number for initial help in getting your module up and running United States 1 440 646 3223 Monday Friday 8am 5pm EST Outside United Please contact your local Rockwell Automation representative for any States technical support issues New Product Satisfaction Return Rockwell Automation tests all of our products to ensure that they are fully operational when shipped from the manufacturing facility However if your product is not functioning and needs to be returned United States Contact your distributor You must provide a Customer Support case number see phone number above to obtain one to your distributor in order to complete the return process Outside United Please contact your local Rockwell Automation representative for States return procedure Allen Bradley is a registered trademark of Rockwell Automation SLC and DTAM are trademarks of Rockwell Automation
67. modular SLC 500 power supply Catalog Number 1746 P1 P2 P4 is outside of the requirements of the NO4I and NO4V analog modules and cannot be used The following table shows the power requirements for each analog module using backplane power Use this table to calculate the total load on the modular system power supply For more information refer to the SLC 500 user manual for modular controllers mee The analog modules do not supply loop power for the input device You must supply the appropriate loop power for loop powered input devices Catalog Number 5VoltCurrent 24VoltCurrent T4eN4 o SS MAst lt lt SO OSC COMAO 1746 NI04 55 mA 145 mA 1746 NIO4V 55 mA 115mA 1746 NO4I 55 mA 195 mA 1746 NO4V 55 mA 145 malt 1 Omit these values from your SLC power supply loading calculations if you decide to use an external power supply The chart starting on the next page provides available analog module combinations in the expansion chassis of a fixed controller e valid combination invalid combination V valid combination when used with external power supply BASIC net Basic Module is supplying power to an AIC No other device requiring power is connected to the AIC NI4 NI04I NIO4V Installing and Wiring Your Analog Module 3 3 NO4I NO4V OG16 Ow4 OW8 lt lt lt
68. n a systematic and controlled manner before beginning normal system operation If your analog module is installed in the expansion chassis of a fixed system test your system using the procedures described in the SLC 500 Fixed Hardware Style Installation amp Operation Manual publication 1747 6 21 before executing the analog module start up procedures If your analog module is installed in a modular system test the modular system using the procedures described in the SLC 500 Modular Hardware Style User Manual publication 1747 UM011 before executing the analog module start up procedures Start up Procedures Once you have tested your SLC 500 system follow the steps below in sequence to test your analog module 1 Inspect the analog module 2 Disconnect prime movers 3 Power up the SLC 500 system 4 Test the analog inputs 5 Test the analog outputs 6 Start up the system Publication 1746 UMO005B EN P June 2004 5 2 Testing Your Module Publication 1746 UMO005B EN P June 2004 Inspect the Analog Module Problems can be prevented by inspecting the analog module before installing it in the SLC 500 system Inspection should include the following steps 1 Make sure that all voltage current mode selection DIP switches are set properly inputs only 2 Make sure that all analog module wiring connections are correct and that there are no missing or broken wires Check the tightness of all terminals to make c
69. nalog output value MOV MOVE Source 31208 Dest 0 2 0 Ladder logic continued on the next page Publication 1746 UM005B EN P June 2004 Programming Examples 6 11 Rung 2 2 Scale values in the 0 to 100 range to the decimal range for the 4 20 mA analog output Below Above Mulitply range flag range flag by scaled range B3 B3 MUL MULTIPLY o 1 Source A N7 0 o Source B 24966 Dest N7 1 o Divide by input range DDV DOUBLE DIVIDE Source 100 Dest N7 1 o Add offset ADD ADD Source A N7 1 o Source B 6242 Dest 0 2 0 Clear math overflow Le bi S 5 4 U 0 Rung 2 3 Publication 1746 UM005B EN P June 2004 6 12 Programming Examples Using the Scale with Parameters SCP Instruction Rung 2 0 N7 0 contains percentage of valve open If this value is less than 0 move the minimum value to the analog output 6242 decimal 4 mA at the analog output Check for Below below range flag range LES B3 LESS THAN
70. nd continuous scan mode function 4 Display the data in File 1 Input Image Table 5 Change the radix of the display to decimal 6 If the input channel of the module has been disconnected from its sensor attach a voltage source voltage input or current source current input to the input and set the source to the lower boundary condition If the input channel is connected to its sensor set the sensor to its lower boundary condition 7 Locate the input channel image data in the image table The input image word for the input channel being tested should read approximately the lower boundary calculated in step 2 The exact value of the image word is affected by the accuracy of the analog module and the input sensor Ensure that the deviation from the boundary value is within tolerances for the analog application 8 If the input channel has been disconnected from its sensor attach the voltage source voltage input or current source current input to the input and set the source to the upper boundary condition If the input channel is connected to its sensor set the sensor to its upper boundary condition 9 Repeat step 7 for the upper boundary condition Publication 1746 UMO005B EN P June 2004 5 6 Testing Your Module Publication 1746 UMO005B EN P June 2004 10 Repeat steps 1 through 8 for the remaining analog inputs 11 If any of the analog input channels do not pass the start up procedure check for the
71. nded e use Belden cable 8761 for wiring the analog modules making sure that the drain wire and foil shield are properly earth grounded e route the Belden cable separate from any other wiring Additional noise immunity can be obtained by routing the cables in grounded conduit Publication 1746 UMO005B EN P June 2004 3 16 Installing and Wiring Your Analog Module Publication 1746 UMO005B EN P June 2004 e group analog and low voltage dc modules away from ac I O or high voltage dc modules A system may malfunction due to a change in the operating environment after a period of time We recommend periodically checking system operation particularly when new machinery or other noise sources are installed near the SLC 500 system For further details on system installation and startup refer to e SLC 500 Modular Hardware Style User Manual publication 1747 UM011 e SLC 500 Fixed Hardware Style Installation amp Operation Manual publication 1747 6 21 e Safety Guidelines for the Application Installation Maintenance of Solid State Control A B Publication SGI 1 1 Interface between the Module and the Processor Chapter 4 Module Operation and System Considerations This chapter describes e Interface between the Module and Processor e System Considerations This section describes how to set up an analog module in a SLC 500 system Entering Module ID Codes When configuring an analog module for an SLC 500 system
72. oduce the analog module output channel boundary conditions determined in step 1 For example if 1 volt and 5 volts are boundary conditions the decimal values would be 3277 and 16384 Publication 1746 UMO005B EN P June 2004 5 8 Testing Your Module Publication 1746 UMO005B EN P June 2004 3 10 11 Create and save the test rung shown below MOV MOVE Source N7 0 Dest Oven e is the slot number of the analog module x is the number of the analog module output channel being tested Download the program to the processor and enter the RUN mode Display the data in address N7 0 Enter lower boundary condition value in N7 0 For example if the lower boundary condition is 1 volt enter 3277 into N7 0 If the output channel has not been disconnected from its actuator the actuator should assume its lower boundary condition If the output channel has been disconnected from its actuator connect either the ammeter current output or voltmeter voltage output to the analog module output channel The exact value of the meter reading is affected by the accuracy of the analog module and the meter Ensure that the deviation from the lower boundary condition is within tolerances for the application in which the analog module is used For example if 1 volt was the lower boundary condition the voltmeter should read approximately 1 volt Enter upper boundary condition value in N7 0 For example if
73. of your analog input Optional Analog Input Software Calibration C 3 4 Using an analog input calibration source or your system s input device placed at the 20 mA position capture the high value by energizing the calibrate high input Ensure that your high value lies within the conversion range of your analog input 5 Energize the calibrate input This causes the SLC to calculate the slope and offset values used to perform the error correction to the analog input The analog channel is now calibrated to 3 LSB at the calibration temperature Use the offset error drift and gain error drift to calculate the amount of additional error that can be introduced into your system due to temperature variation The recommended calibration period is once every 6 months If an application has a wide range of operating temperatures a software calibration should be performed every 3 to 4 months Publication 1746 UMO005B EN P June 2004 C 4 Optional Analog Input Software Calibration Publication 1746 UMO005B EN P June 2004 Example Ladder Diagram The following ladder diagram requires 3 external inputs that are used to perform the calibration procedure Lo causes the ladder to capture the 4 mA calibration value and Hi causes the ladder to capture the 20 mA calibration value Cal causes the ladder diagram to scale the Hi and Lo values to the nominal values which provides the slope and offset values used to calibrate the analog input ch
74. oftware described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Automation Inc is prohibited Throughout this manual we use notes to make you aware of safety considerations Identifies information about practices or circumstances that can cause an explosion in a hazardous environment which may lead to personal injury or death property damage or economic loss IMPORTANT Identifies information that is critical for successful application and understanding of the product Identifies information about practices or circumstances that can lead to personal injury or death property damage or economic loss Attentions help you ATTENTION e identify a hazard e avoid a hazard e recognize the consequence TAATA Labels may be located on or inside the drive to alert people that dangerous voltage may be present TETA Labels may be located on or inside the drive to alert people that surfaces may be dangerous temperatures Summary of Changes The information below summarizes the changes to this manual since the last printing To help you find new and updated information in this release of the manual we have included change bars as shown to the right of this paragraph For information on See SCP scale with parameters instruction available with SLC 6 3 6 9 6 15 6 21 5 05 Change in Impedance to ANL Com specification
75. on 1746 UMO005B EN P June 2004 3 8 Installing and Wiring Your Analog Module Wiring Considerations Publication 1746 UMO005B EN P June 2004 2 Align the circuit board of the analog module with the card guide of the chassis 3 Slide the module in until both top and bottom retaining clips are secured WA WH Pe WNW WAS WH WW WWD SS al 7 __ Ni NYWQ A VIA Top and Bottom Module Release s N N O A hS Card Guide x oe oo ao N No N ee 4 To remove the module depress the retaining clips at the top and bottom of the module and slide the module out The following section provides system wiring guidelines how to ground your Belden cable and how to determine the cable length ATTENTION Before wiring any analog module disconnect power from the SLC 500 system and from any other source to the analog module Installing and Wiring Your Analog Module 3 9 System Wiring Guidelines Use the following guidelines in planning the system wiring for the analog modules e all analog common terminals ANL COM are electrically connected inside the module ANL COM is not connected to earth ground inside the module voltages on IN and IN terminals must remain within 20 Volts with respect to ANL COM to ensure proper input channel operation This is true for current and voltage input channel operation voltage ou
76. ould be kept clean and the enclosure door should be kept closed whenever possible Regularly inspect your terminal connections for tightness Loose connections may cause improper functioning of the SLC 500 system or damage the components of the system ATTENTION To ensure personal safety and to guard against equipment damage inspect connections with A incoming power OFF For general maintenance procedures for electrical equipment refer to the requirements specific to your region e Europe Refer to the standards found in EN 60204 and your national regulations e United States Refer to article 70B of the National Fire Protection Association NFPA It describes general requirements regarding safety related work practices Safety considerations are an important element of proper troubleshooting procedures Actively thinking about the safety of yourself and others as well as the condition of your equipment is of primary importance Refer to the SLC 500 Fixed Hardware Style Installation amp Operation Manual publication 1747 6 21 or the SLC 500 Modular Hardware Style User Manual publication 1747 UM011 for additional information on troubleshooting Publication 1746 UMO005B EN P June 2004 7 2 Maintenance and Safety Safety Considerations When Troubleshooting Publication 1746 UMO005B EN P June 2004 The following section describes several safety areas you should be aware of when troubleshooting your SLC 500 system
77. output bits for the specified modules If an application requires processor updates of the analog data more frequently than once per scan use an Immediate Input or an Immediate Output instruction An Immediate Input or Output instruction typically updates 16 bits or 1 analog channel in 1 millisecond Refer to your programming software s user manual for more information Typical Time for Analog Data Updates to the Processor s Input and Output Image Once per processor scan 10 milliseconds for typical Automatic 1K program Using immediate Input or Output 1 millisecond per analog Instruction channel Number of Input and Output Bits Representing Analog Data Description Input Bits Output Bits NI4 64 N1401 and NIO4V 2 input and 2 Output 32 32 channels NO4I and NO4V 64 Monitoring the Input and Output Data The analog input and output data can be monitored in several different radices using your programming software Viewing the radix as decimal allows the analog input and output data to be viewed as decimal representations of integer words When monitoring in binary radix data is viewed in two s complement representation for negative values A description of two s complement data is available in Appendix B Publication 1746 UMO005B EN P June 2004 4 6 Module Operation and System Considerations If you are using the Hand Held Terminal HHT or the Data Table Access Module DTAM
78. plicable acts N223 Publication 1746 UM005B EN P June 2004 A 2 Specifications General Analog Input Catalog 1746 Input Channels per Output Channels per Backplane Current Draw External 24V dc Power Module Module 5V max 24V max Supply Tolerance NI4 4 differential voltage or NA 35 mA 85 mA NA current selectable per channel not individually isolated NIO4I 2 differential voltage or 2 current outputs not 55 mA 145 mA NA current selectable per individually isolated channel not individually isolated NIO4V 2 differential voltage or 2 voltage outputs not 55 mA 115 mA NA current selectable per individually isolated channel not individually isolated NO4I NA 4 current outputs not 55 mA 195 mA 24 10 at 195 mA max individually isolated 21 6 to 26 4V de NO4V NA 4 voltage outputs not 55 mA 145 mA 24 10 at 145 mA max individually isolated 21 6 to 26 4V de 1 Required for some applications if SLC 24V power is not readily available Specifications for NI4 NIO4I and NIO4V Specification 1746 NI4 1746 NI04I NIO4V Converter Resolution 16 bit Repeatability 1LSB Location of LSB in 1 0 image word 0000 0000 0000 0001 Non linearity 0 01 Common Mode Voltage Range 20 to 20 volts Common Mode Rejection at 0 to 10 Hz min 50 dB Common Mode Rejection at 60 Hz min 105 dB Normal Mode Rejection at 60 Hz min 55 dB Channel Bandwidt
79. r their normal operating range use these devices to test the analog module input channels If the sensors cannot be manually varied a voltage source or current source is necessary to test the input channels In this case disconnect the analog module input channels at the sensor to test the terminal block wiring The following information applies to either test procedure mA The following procedure does not ensure that the input mode DIP switch is properly configured Visually inspect the input mode DIP switch before installing the analog module in the chassis ATTENTION Care should be taken to avoid connecting a voltage source to a channel configured for a current input Improper module operation or damage to the module can occur gt Testing Your Module 5 5 To test the analog inputs follow these steps 1 Determine the boundary conditions for the analog module input channel For example if the input channel is connected to a sensor that has an output range of 1 mA to 5 mA the boundary conditions would be 1 mA Gower and 5 mA upper 2 Using the formulas from page calculate the input decimal values that should appear in the processor image table when the boundary conditions are present on the analog module input channel For example if 1 mA and 5 mA are boundary conditions the decimal values would be 819 and 4096 3 Assuming that the programming device is on line with the processor select the test mode a
80. s from DAC gt CURRENT L otur OUT gt ANL COM Publication 1746 UM005B EN P June 2004 D 2 Module Input and Output Circuits Circuit for 50Q Current Output Publication 1746 UMO005B EN P June 2004 P l ANL com 120Q _ 30KQ L 10KQ V Circuit for Current Input Circuit for Voltage Input Circuit for Voltage Output AtoD Converter AtoD Converter DtoA Converter DtoA Converter Isolation Rating lt 500V de gt Transfomer Isolation Rectifier Filter and Regulation Optical Isolation V V F V Connection to V SLC 500 System Connection to Chassis Numerics 1746 NO04I and NO4V Analog Output Modules 1 2 1746 N1041 and NIO4V Analog Combination Modules 1 2 1746 NI4 Analog Input Module 1 2 A Addressing Analog Modules 4 1 Addressing and Scaling Outputs Calculating the Linear Relationship 6 8 Using Standard Math 6 10 Using the Scale with Parameters SCP Instruction 6 12 Addressing OutofRange Detection and Scaling of Analog Inputs Calculating the Linear Relationship 6 2 Calculating the OutofRange Flag Using the Scale Instruction 6 3 Using Standard Math 6 4 Using the Scale SCL Instruction 6 6 Using the Scale with Parameters SCP Instruction 6 8 analog modules addressing 4 1 4 2 configuring 3 5 current output specifications A 5 current loop input A 3 general specifications A 1 inspecting 5 2 installing 3 6 preventative maintenance 7 1
81. s not occur Unless another rung is added to transfer data to the Output Image based on this rung being false the previous data is retained That is the value 32767 remains in the Output Image table and is transferred to the analog module at the end of subsequent program scans until changed by the user program Module Operation and System Considerations 4 11 Non Retentive Analog Output Example The following example shows a non retentive program during a program execution and for a mode change or power cycle MOV I1 1 0 0 MOVE Source 32767 Dest 0022 0 MOV aes MOVE Source 0 Dest 00 2 0 In the above example as long as discrete input 0 is ON the value 32767 is transferred to analog output channel 0 If discrete input 0 turns OFF the value 0 is transferred to analog output channel 0 During a Mode Change or Power Cycle The first pass bit in the Status File is used to initialize the analog output following a power up in the RUN mode or entry into the RUN or TEST mode The address of the First Pass bit is 2 1 15 When this bit is ON the first pass of the program scan is taking place Therefore the following ladder rung can be programmed to always clear the analog output channel during the first program scan MOV ce MOVE i Source 0 Dest 00 2 0 Input Out of Range Detection Analog modules do not provide an input out of range signal to the proces
82. sor However if this feature is critical to a specific application you can program the processor to provide this function The following program applies to all SLC 500 processors The program shows two compare instructions that check for analog input values Publication 1746 UMO005B EN P June 2004 4 12 Module Operation and System Considerations Publication 1746 UMO005B EN P June 2004 which exceed low and high limits respectively For this example the analog input value is in word 1 of slot 1 11 1 1 Whenever the input value exceeds a limit this program latches a binary variable in memory that could serve as an alarm indication at some other point in the program B3 0 Turn OFF U Alarm LES B3 0 come LESS THAN L Turn ON Alarm Low Limit Source A I1 1 1 Exceeded Source B o GRT B3 0 Turn ON Alarm High Limit GREATER THAN L SL g Source A I1 1 1 Source B 16 384 Remainder of Program END The second program is for SLC 5 02 processors This program uses the Limit Test instruction that checks both low and high limits in a single instruction This instruction assumes that the analog input value is in word 1 of slot 1 11 1 1 As in the above program whenever the input value exceeds a limit this program latches a binary variable in memory which could serve as an alarm indication at some other point in the program B3 0 Turn OFF a
83. sor image table is transferred to the analog module on the subsequent scan Publication 1746 UMO005B EN P June 2004 4 14 Module Operation and System Considerations Publication 1746 UMO005B EN P June 2004 Output Amplitude in dB Input Channel Filtering The input channels for all of the analog modules incorporate extensive on board signal conditioning The purpose of this conditioning is to reject the high frequency noise that can couple into an analog input signal while passing the normal variations of the input signal The conditioning is performed by passing the input signal through a 6 pole Gaussian digital filter The sharp cut off of this filter is demonstrated in the frequency response plot shown below Frequency components of the input signal at or below the filter corner frequency of 10 Hz are passed with under 3 dB of attenuation This pass band allows the normal variation of sensor inputs such as temperature pressure and flow transducers to be input data to the processor 0 20 40 60 80 100 120 140 Frequency in Hz Noise signals coupled in at frequencies above the 10 Hz pass band is sharply rejected An area of particular concern is the 50 60 Hz region where pick up from power lines can occur From the frequency response diagram you see that a 60 Hz signal on the plus input with respect to the minus input is attenuated by over 55 dB 60 Hz normal mode rejection Percentage of
84. t disconnect the motor wires open the circuit at a point between the motor starter and the relay contact ATTENTION Machine motion during system checkout can be hazardous to personnel During all checkout A procedures you must disconnect all devices which when energized might cause machine motion Power Up the SLC 500 System Apply power to the fixed or modular system The analog module LED red should be illuminated indicating that the module is receiving 24V dc power While an illuminated analog module LED does not ensure that the module is operating properly a non illuminated LED indicates that the analog module is not functional Do not continue with the test procedures until the LED is illuminated The four most probable causes of a non illuminated LED are e The SLC 500 system is not receiving power from its power supply Check the POWER LED on the fixed system unit or the power supply on the modular system If the LED is not illuminated refer to the Fixed Hardware Style Installation amp Operation Manual publication 1747 6 21 or the Modular Hardware Style User Manual publication 1747 UM011 If the module is a 1746 NO4I or NO4V check the state of the optional 24V dc power switch If external power is selected but not connected to the front of the module the power LED will not illuminate The power from the supply is not being received by the remainder of the SLC 500 system You can test this by attempting
85. t the top and bottom until it is properly secured You are now ready to earth ground your foil shield and drain wire from each cable Do not connect the foil shield or drain wire to the analog module terminal block The foil shield and drain wire must be connected to earth ground which is not available on the terminal block Refer to the illustration on the next page for wiring diagrams of the analog modules Installing and Wiring Your Analog Module 3 13 NI4 j analog source analog source earth ground Jumper unused inputs O00000 D000 O00 ANL COM NIO4I amp NIO4V analog source IN 0 IN 0 ANL COM earth ground Jumper unused inputs Do not jumper unused outputs Ono ONO ARU N O O00 000 000 000 lt x NO4I amp NO4V 24V de power supply if external power is selected Cable length from external Jt 24V de power supply to analog gt Ext pwr module must be less than 10m 1 SUD u ground Do not jumper unused outputs OO OO OO OO NOD OF WP Analog commons are internally connected in the module Channels are not isolated from each other Publication 1746 UMO005B EN P June 2004 3 14 Installing and Wiring Your Analog Module Wiring Schematics for 2 3 and 4 Wire Analog Input Devices Important The module does not provide loop power for analog inputs Use a power supply that matches the transmitter speci
86. tputs OUT 0 and OUT 1 of the NIO4V and NO4V are referenced to ANL COM Load resistance R1 for a voltage output channel must be equal to or greater than 1K ohms current output channels OUT 0 and OUT 1 of the NIO4I and NOMI source current that returns to ANL COM Load resistance R1 for a current output channel must remain between 0 and 500 ohms Grounding Your Cable Belden cable 8761 has two signal wires black and clear one drain wire and a foil shield Refer to the illustration on p 3 10 The drain wire and foil shield must be grounded at one end of the cable Do not earth ground the drain wire and foil shield at both ends of the cable Input Channel Use a chassis mounting tab as a ground for the drain wire and foil shield Output Channel Ground the drain wire and foil shield at the analog load a you cannot ground the output channel at the load ground the drain wire and foil shield at the chassis mounting tab Do not connect the foil shield or drain wire to the analog terminal block They must be connected to an earth ground which is not provided at the analog module Publication 1746 UMO005B EN P June 2004 3 10 Installing and Wiring Your Analog Module Wiring the Analog Module Publication 1746 UMO005B EN P June 2004 Foil Shield Insulation Black Wire Clear Wire Drain Wire Determining the Cable Length Determine the length of cable you will need to connect a channel to its input or outp
87. uld be illuminated indicating that the module is receiving 24V dc power Publication 1746 UMO005B EN P June 2004 Quick Start for Experienced Users 2 7 e Understanding analog inputs Reference Analog inputs convert current and voltage signals into 16 bit max integer values and place Chapter 4 them in the input image for the slot that the analog module resides in Module Operation and System Considerations Address 1746 NI4 1746 NI04I NI04V l e 0 Input Channel O Input Channel 0 l e 1 Input Channel 1 Input Channel 1 l e 2 Input Channel 2 l e 3 Input Channel 3 Note The e is the slot number Voltage Current Range Integer Representation 10V dc to 10V de 32 768 to 32 767 0 to 10V de 0 to 32 767 10V de 0 to 5V de 0 to 16 384 1 to 5V dc 3 277 to 16 384 20 mA to 20 mA 16 384 to 16 384 0 to 20 mA 0 to 16 384 20 mA 4 to 20 mA 3 277 to 16 384 Publication 1746 UMO005B EN P June 2004 2 8 Quick Start for Experienced Users Ea Understanding analog outputs Reference Analog outputs convert 16 bit integer values placed in the output image to voltage or current Chapter 4 signals for the slot that the analog card is in Module Operation and System Considerations Address 1746 NO4 1746 NIO4I NIO4V O e 0 Output Channel 0 Output Channel 0 O e 1 Output Channel 1 Output Channel
88. ut device Remember to leave additional length to route the drain wire and foil shield for earth grounding After the analog module is properly installed in the chassis use the following wiring procedure Belden cable 8761 is recommended when wiring analog modules This section assumes that you have properly installed the analog module ATTENTION Before wiring any analog module disconnect power from the SLC 500 system and from any other source to the analog module To wire your analog module follow these steps and refer to the illustrations on the next page 1 Designate the end of the cable where the drain wire and foil shield is earth grounded as END 1 Designate the other end as END 2 2 At each end of the cable strip some casing to expose the individual wires 3 Trim the signal wires to 2 inch lengths Strip about 3 16 inch 4 76mm of insulation away to expose the end of the wire 4 At End 1 twist the drain wire and foil shield together bend them away from the cable and apply shrink wrap Installing and Wiring Your Analog Module 3 11 5 At End 2 cut the drain wire and foil shield back to the cable and apply shrink wrap 6 Connect the signal wires black and clear to the terminal block and the input and output devices The recommended maximum torque is 5 lb in 0 565 NM for all terminals e If the foil shield and drain wire of the channel are grounded at the sourcing device make sure End 2 of the c
89. ut mode of input channel 0 and 1 A switch in the ON position configures the channel for current input A switch in the OFF position configures the channel for voltage input Current o 12 Switch 1 Channel 0 d A A Switch 2 Channel 1 Voltage Publication 1746 UMO005B EN P June 2004 3 6 Installing and Wiring Your Analog Module Choosing a Slot in the Chassis Installing Your Module Publication 1746 UMO005B EN P June 2004 External Power Switch for the 1746 NO4I and NO4V The NO4I and NO4V analog output modules have an external 24V dc power switch SW1 which gives you the option of using an external power supply In the UP position power is drawn from an external power source In the DOWN position power is drawn from the backplane of the module The switch is located on the analog module board Switch orientation is also provided on the nameplate of the module The 24V dc user power connection on a fixed SLC 500 can power an NOA4I or NO4V analog module However the regulation of the 24V dc user connection on a modular SLC 500 power supply Catalog Number 1746 P1 P2 is outside of the requirements of the NO4I and NO4V analog modules and cannot be used External 24V de Sw 1 Power Selector Backplane Two factors determine where the analog module should be located in the chassis ambient temperature and electrical noise Consider the following conditions when selecting a slot for an analog
90. ution for analog voltage outputs is 1 22070 mV per LSB where the LSB position in the output word is indicated as x Wde 3277 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 X Bit Not Used Module Operation and System Considerations 4 9 System Considerations This section describes the system considerations for an analog module These include e safe state for outputs e retentive programming e input out of range detection e response to slot disable e input channel filtering Safe State for Outputs Whenever an SLC 500 system is NOT in the RUN mode the outputs on the analog module are automatically forced to 0 Volts or 0 mA by the SLC 500 system This occurs when the processor is in the e FAULT mode e PROGRAM mode e TEST mode ATTENTION When designing and installing the SLC 500 system devices connected to the analog module output channels must be placed into a safe state whenever the analog output is 0 volts or 0 mA the offset error Retentive Programming Option This section describes the affects of a processor mode change on analog outputs The following information applies to the 1746 NIO4I NIO4V NO4I and NO4V analog modules This programming option allows you to retain analog data in the Input and Output Image tables when the SLC 500 processor e transitions from RUN PROGRAM RUN mode OR e when power is turned OFF and reapplied In both cases when power is reapplied the data is transferred to th
91. ver the regulation of the 24V dc user connection on a modular SLC 500 power supply Catalog Number 1746 P1 P2 and P4 is outside of the requirements of the NO4I and NO4V analog modules and cannot be used Installing and Wiring Your Analog Module 3 5 Configuring Your Module The NI4 NIO4I and NIO4V analog modules have user selectable DIP switch settings which allow you to configure the input channels as either current or voltage inputs The switches are located on the analog module board The following illustration shows the ON and OFF switch settings Switch orientation is also provided on the nameplate of the module A ON Configures channel for current input J OFF Configures channel for voltage input ATTENTION Care should be taken to avoid connecting a voltage source to a channel configured for current input Improper module operation or damage to the module can occur Switch Settings for the 1746 N14 The NI4 has 4 individual DIP switches that control the input mode of input channels 0 through 3 A switch in the ON position configures the channel for current input A switch in the OFF position configures the channel for voltage input Current Switch 1 Channel 0 123 Switch 2 Channel 1 A A A A Switch 3 Channel 2 Switch 4 Channel 3 Zo Voltage Switch Settings for the 1746 NIO4I and NIO4V The NIO4I and NIO4V have 2 individual switches labeled 1 and 2 These switches control the inp
92. x lin 0 Vem 0 0 20 LSB C 1 Refer to Appendix C for a method to improve accuracy over temperature Publication 1746 UMO005B EN P June 2004 A 4 Specifications Voltage Input Specifications for NI4 NIO4I and NIO4V Specification 1746 N14 1746 NI04I N104V Input Range 10 to 10V de 1 LSB Voltage Input Coding 10 to 10V dc 1 LSB 32 768 to 32 767 Input Impedance 760K ohms 1M ohms Resolution 305 176 pV per LSB Full Scale 10V de Overall Accuracy at 25 C 77 F max 0 284 of full scale Overall Accuracy at 0 to 60 C 32 to 140 F max 0 504 of full scale Overall Accuracy Drift max 63 ppm C of full scale Gain Error at 25 C 77 F max 0 263 Gain Error at 0 to 60 C 0 461 32 to 140 F max Gain Error Drift max 57 ppm C Offset Error at 25 C 77 F max 7 LSB Offset Error at 0 to 60 C 14 LSB 32 to 140 F max Offset Error Drift max 0 20 LSB C Overvoltage Protection max across IN to IN terminals either 220V ac RMS continuously or 220V dc continuously 1 The value listed is for Series B and greater For Series A the input impedance is 1M ohm 2 Refer to Appendix C for a method to improve accuracy over temperature Publication 1746 UMO005B EN P June 2004 Specifications A 5 Current Output Specifications for NIO4I and NO4
93. y SLC 500 processor and the second uses the scaling instruction available on the SLC 5 02 and later processors The third program uses the SCP scale with parameters instruction available only with SLC 5 03 OS302 or later SLC 5 04 OS401 or later and SLC 5 05 In the first example program the analog input value is checked against the minimum and maximum allowable input values If the input is out of range the output value is set to its minimum or maximum value If the input value is in range the output value is determined by scaling the input To scale an analog input follow these steps 1 Multiply the input by the scaled range Scale range scaled max scaled min 2 Divide the 32 bit result by the input range Input range input max input min 3 Add in the offset value in this case negative The final value is then moved to the analog output channel 0 The multiply operation will generate an overflow bit and minor error flag whenever the results exceed 16 bits Since the divide is carried out on the 32 bit result in the math register the overflow does not present a problem The minor error flag has to be cleared before the end of the program scan to avoid a system error Publication 1746 UMO005B EN P June 2004 6 22 Programming Examples Using Standard Math Instructions Rung 2 0 Check for below range LES LESS THAN Source A I 1 0 Source B 32

1746-UM005 - Rockwell Automation

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