D0-ANLG-M Manual - AutomationDirect
Contents
1. Transmitter Supply Manufacturers of transmitters and transducers specify a wide variety of power sources for their products Follow the manufacturer s recommendations In some cases manufacturers specify a minimum loop or load resistance that must be used with the transmitter The F0 04AD 1 provides 125 ohm resistance for each channel If your transmitter requires a load resistance below 125 ohms you do not have to make any changes However if your transmitter requires a load resistance higher than 125 ohms you need to add a resistor in series with the module Consider the following example for a transmitter being operated from a 30 VDC supply with a recommended load resistance of 750 ohms Since the module has a 125 ohm resistor you need to add an additional resistor R Tr Mr R resistor to add RES 18 Tr Transmitter Requirement R 625 i Mr Module resistance internal 125 ohms Two wire Transmitter Module Channel 1 DC Supply R CH1 30V CH1 an oV 5 ohms OV FO 04AD 1 4 Channel Analog Current Input Module Operation Channel Scanning The DLO5 reads all four channels of input data during each scan The CPU supports special V memory locations that are used to manage the data transfer This2. HHH HHHH 440 oz wA TERR WARNING Before removing the analog module or the terminal block on the face of the module disconnect power to the PLC and all field devices Failure to disconnect power can result in damage to the PLC and or field devices Connecting and Disconnecting the Field Wiring Wiring Guidelines Your company may have guidelines for wiring and cable installation If so you should check those before you begin the installation Here are some general things to consider e Use the shortest wiring route whenever possible e Use shielded wiring and ground the shield at the transmitter source Do not ground the shield at both the module and the source e Do not run the signal wiring next to large motors high current switches or transformers This may cause noise problems e Route the wiring through an approved cable housing to minimize the risk of accidental damage Check local and national codes to choose the correct method for your application The F0 04AD 1 does not supply power to field devices You will need to power transmitters separately from the PLC To remove the terminal block disconnect power to the PLC and the field devices Pull the terminal block firmly until the connector separates from the module You can remove the analog module from the PLC by folding out the retaining tabs at the top and bottom of the mo
3. DIRECT AUTOMATION dl DL05 4 Channel Analog Input Module Manual Number DO ANLG M Analog Input 4 CHANNELS 0 20mA 4 20mA WARNING Thank you for purchasing automation equipment from Automationdirect com We want your new DirectLOGIC automation equipment to operate safely Anyone who installs or uses this equipment should read this publication and any other relevant publications before installing or operating the equipment To minimize the risk of potential safety problems you should follow all applicable local and national codes that regulate the installation and operation of your equipment These codes vary from area to area and usually change with time It is your responsibility to determine which codes should be followed and to verify that the equipment installation and operation is in compliance with the latest revision of these codes At a minimum you should follow all applicable sections of the National Fire Code National Electrical Code and the codes of the National Electrical Manufacturer s Association NEMA There may be local regulatory or government offices that can also help determine which codes and standards are necessary for safe installation and operation Equipment damage or serious injury to personnel can result from the failure to follow all applicable codes and standards We do not guarantee the products described in this publication are suitable for your particular application
4. fies a 4 channel analog input module in the DLO5 option slot and stores the in put values as binary numbers LSB 9876543210 O The DLO5 PLC uses V7701 as a pointer to a V memory location used for storing analog input data The value loaded in V7701 is an octal number identifying the first word in a contiguous range of V memory locations For the F0 04AD 1 module you will identify the first of four V memory locations since it is a 4 channel module For example loading 02000 causes the pointer to write channel 1 s data value to V2000 channel 2 s data value to V2001 channel 3 s data value to V2002 and channel 4 s data value to V2003 You will find an example program that loads appropriate values to V7700 and V7701 on page 1 9 EES F0 04AD 1 4 Channel Analog Current Input Analog Data Bits Module Resolution The first twelve bits represent the analog data in binary format Bit Value Bit Value 0 1 6 64 1 2 7 128 2 4 8 256 3 8 9 512 4 16 10 1024 5 32 11 2048 Since the module has 12 bit resolution the analog signal is converted into 4096 counts ranging from 0 4095 212 For example a 4mA signal would be 0 anda 20mA signal would be 4095 This is equivalent to a binary value of 0000 0000 0000 to 1111 1111 1111 or 000 to FFF hexadecimal The diagram to the right shows how this relates to the signal range Each count can also be expressed in
5. nor do we assume any responsibility for your product design installation or operation If you have any questions concerning the installation or operation of this equipment or if you need additional information please call us at 1 770 844 4200 This publication is based on information that was available at the time it was printed At Automationdirect com we constantly strive to improve our products and services so we reserve the right to make changes to the products and or publications at any time without notice and without any obligation This publication may also discuss features that may not be available in certain revisions of the product Trademarks This publication may contain references to products produced and or offered by other companies The product and company names may be trademarked and are the sole property of their respective owners Automationdirect com disclaims any proprietary interest in the marks and names of others Stage is a trademark of Koyo Electronics Industries Co LTD Think amp Do Software is a trademark of Think amp Do Software Inc Texas Instruments is a registered trademark of Texas Instruments Inc TI TIWAY Series 305 Series 405 T1305 and T1405 are trademarks of Texas Instruments Inc Siemens and SIMATIC are registered trademarks of Siemens AG GE is a registered trademark of General Electric Corporation Series One is a registered trademark of GE Fanuc Automation North America Inc MODBUS is
6. Analog inputs can be used as process variables for the 4 PID loops included in the DLO5 CPU Field device burn out is detected on all four channels when 4 20mA range is selected On board active analog filtering and RISC like microcontroller provide digital signal processing to maintain precise analog measurements in noisy environments INPUT xo X1 X2 x3 X4 X5 x6 X7 Analog Input 4 CHANNELS PT ll Analog Input 4 CHANNELS OMA o vi va ova w FO 04AD 1 4 Channel Analog Current Input The following tables provide the specifications for the FO 04AD 1 Analog Input Module Review these specifications to make sure the module meets your application Input Number of Channels 4 single ended one common Specifications Input Range 0 to 20 mA or 4 to 20 mA current jumper selectable Resolution 12 bit 1 in 4096 for 0 20mA scaled for 4 20mA Step Response 25 0 mS typ to 95 of full step change Crosstalk 80 dB 1 2 count maximum Active Low pass Filtering 3 dB at 40Hz 12 dB per octave Input Impedance 125 Ohm 0 1 1 8 W current input Absolute Maximum Ratings 30 mA to 30 mA current input Converter type Successive approximation Linearity Error End to End 1 count 0 025 of full scale maximum Input Stability 1 count Full Scale Calibration Error 10 counts maximum 20mA current input Offset error not included Offset Calibration Error 5 counts maximum 4mA current input M
7. a registered trademark of Gould Inc IBM is a registered trademark of International Business Machines MS DOS and Microsoft are registered trademarks of Microsoft Corporation Windows and Windows NT are trademarks of Microsoft Corporation OPTOMUX and PAMUX are trademarks of OPTO 22 Copyright 1999 Automationdirect com Incorporated All Rights Reserved No part of this manual shall be copied reproduced or transmitted in any way without the prior written consent of Automationdirect com Incorporated Automationdirect com retains the exclusive rights to all information included in this document Manual Revisions If you contact us in reference to this manual be sure to include the revision number Title DLO5 4 Channel Analog Input Manual Manual Number DO ANLG M oo orga FO 04AD 1 4 Channel Analog Current Input In This Chapter Module Specifications Setting the Module Jumper Connecting and Disconnecting the Field Wiring Wiring Diagram Module Operation Special V memory Locations Using the Pointer in Your Control Program Detecting Input Signal Loss Scale Conversions Special Relays FO 04AD 1 4 Channel Analog Current Input Module Specifications The F0 04AD 1 Analog Input module offers the following features The DLO5 reads all four channels in one scan The removable terminal block makes it possible to remove the module without disconnecting the field wiring
8. and the number of channels to scan This loads an octal value for the first V memory location that will be used LDA to store the incoming data For example the 02000 entered here would 102000 designate the following addresses Ch1 V2000 Ch2 V2001 Ch3 V2002 Ch 4 V2003 The octal address 02000 is stored here V7701 is assigned to the ex our pansion slot and acts as a pointer which means the CPU will use the octal value in this location to determine exactly where to store the in coming data RET F0 04AD 1 4 Channel Analog Current Input Detecting Input Signal Loss Analog Signal Loss The F0 04AD 1 analog module can sense the loss of analog input signals in 4 20mA loops The Special Relays described on page 1 12 allow you to use this feature in your ladder program For example in the rung below SP610 is used to pull in coil Y1 which would be used to open or close an external circuit SP610 vi The Special Relay SP610 detects fou 7 a loss of input signal to channel 1 he Use SP610 to trigger an alarm or shut down a machine NOTE The FO 04AD 1 analog module cannot sense the loss of analog input signals in 0 20mA loops See page for information about setting the jumper to select your input type Scale Conversions Scaling the Input Data Many applications call for measure x Units A Het ments in engineering un
9. input type 0 0 20mA 1 4 20mA SP610 Chan 1 input open 0 xmitter signal open 1 xmitter signal good SP611 Chan 2 input open 0 xmitter signal open 1 xmitter signal good SP612 Chan 3 input open 0 xmitter signal open 1 xmitter signal good SP613 Chan 4 input open 0 xmitter signal open 1 xmitter signal good
10. is Sequence with a discussed in more detail in the section on Writing the Control Program DL05 Analog Module Updates Scan Ar DLO5 PLC Read Inputs Execute Application Program Read the data Scan N lt Ch 1 2 3 4 H Scan N 1 1 Ch 1 2 3 4 Store data Scan N 2 lt Ch 1 2 3 4 H y Scan N 3 lt Ch 1 2 3 4 y Scan N 4 Ch 1 2 3 4 Write to Outputs Even though the channel updates to the CPU are synchronous with the CPU scan the module asynchronously monitors the analog transmitter signals and converts each signal into a 12 bit binary representation This enables the module to continuously provide accurate measurements without slowing down the discrete control logic in the RLL program The module takes approximately 25 milliseconds to sense 95 of the change in the analog signal For the vast majority of applications the process changes are much slower than these updates NOTE If you are comparing other manufacturers update times step responses with ours please be aware that some manufacturers refer to the time it takes to convert the analog signal to a digital value Our analog to digital conversion takes only a few microseconds It is the settling time of the filter that is critical in determining the full update time Our update time specification includ
11. terms of the signal level by using the equation shown MSB LSB 4mA 0 4095 eo H L Resolution 4095 H high limit of the signal range L low limit of the signal range 16mA 4095 3 907UA per count FO 04AD 1 4 Channel Analog Current Input Using the Pointer in Your Control Program Using the program below the CPU examines the pointer values the beginning memory location identified in V7701 on the first scan only The example program below shows how to setup these locations Place this rung anywhere in the ladder program or in the initial stage if you are using stage programming instructions This is all that is required to read the analog input data into V memory locations Once the data is in V memory you can perform math on the data compare the data against preset values and so forth V2000 is used in the example but you can use any user V memory location SPO A LD or LD i K 0400 S K 8400 Loads a constant that specifies the number of channels to scan and the data format The upper byte selects the data format i e 0 BCD 8 Binary and the number of channels set to 4 for the F0 01AD 1 The binary format is used for displaying data on some operator interfaces The DL05 PLCs support binary math functions OUT Special V memory location assigned to the expansion slot contains the V7700 data format
12. aximum Inaccuracy 4 25 C 77 F 85 0 to 60 C 32 to 140 F Accuracy vs Temperature 80 ppm C maximum full scale calibration including maximum offset change Recommended Fuse external 0 032 A Series 217 fast acting current inputs One count in the specification table is equal to one least significant bit of the analog data value 1 in 4096 General PLC Update Rate 4 channels per scan Specifications requirements 16 bit Data Word 12 binary data bits 2 channel ID bits 2 diagnostic bits Operating Temperature 0 to 60 C 32 to 140 F Storage Temperature 20 to 70 C 4 to 158 F Relative Humidity 5 to 95 non condensing Environmental air No corrosive gases permitted Vibration MIL STD 810C 514 2 Shock MIL STD 810C 516 2 Noise Immunity NEMA ICS3 304 EES F0 04AD 1 4 Channel Analog Current Input Setting the Module Jumper The position of jumper J3 determines the input signal level You can choose between 4 20mA and 0 20mA The module ships with the jumper not connecting the two pins In this position the expected input signal is 4 20mA To select 0 20mA signals use the jumper to cover both pins 00000000 The default jumper setting se p00000000000 lects a 4 20mA signal source The default jumper setting does not connect the two pins
13. dule As the retaining tabs pivot upward and outward the module s connector is lifted out of the DLO5 socket Once the connector is free you can lift the module out of its slot FO 04AD 1 4 Channel Analog Current Input Wiring Diagram Use the following diagram to connect the field wiring If necessary the FO 04AD 1 terminal block can be removed to make removal of the module possible without disturbing field wiring Typical User Wiring Internal See NOTE 1 Module Wiring FI Analog Input 4 CHANNELS 0 20mA N kd 4 20mA wire 4 20mA CH1 Transmitter N DN x AM PWR 7 N CH1 125 ohms RUN cHe malt CPU 3 wire D N 1 En S rxi1 4 20mA CH2 gt I ae Transmitter D D 4 WW gt a Q AtoD I TX2 Gh 125 ohms D Converter 2 9710 RX2 cHs he kg 7 2 wire mM 4 3 3 EG g 4 20mA CH3 a Transmitter N 4w Je CH3 125 ohms JED z CH4 hoe A x H 8 2 wire 4 20mA CH4 Transmitter 4 FO 04AD 1 pa CH4 125 ohms NOTE 1 Shields should be grounded at the signal deg V source NOTE 2 Connect all external power supply com 18 30VDC OV mons Supply NOTE 3 A Series 217 0 032A fast acting fuse is recommended for current loops Current Loop Transmitter Impedance
14. es the filter settling time 1 7 F0 04AD 1 4 Channel Analog Current Input Special V memory Locations Data Formatting Structure of V7700 Structure of V7701 The DLO5 series has two special V memory locations assigned to the analog input module These V memory locations allow you to e specify the data format binary or BCD e specify the number of channels to scan 4 channels for the FO 04AD 1 e specify the V memory locations to store the input data The table below shows the special V memory locations used by the DLO5 PLC for analog input modules Analog Input Module V memory Locations V7700 V7701 Data Type and Number of Channels Storage Pointer The DLO5 PLC allows the use of bits 8 15 for identifying the number of input channels and the data type binary or BCD The F0 04AD 1 module actually uses only bits 10 and 15 as shown in the diagram below Bit 10 identifies the module as a 4 channel analog input module This bit should be set to 1 for the FO O4AD 1 module Bit 15 is used to distinguish BCD 0 and binary 1 Loading a constant of 0400h into V7700 MSB puts a 1 in bit 10 This identifies a 4 channel analog input module in the DLO5 option slot and stores the input data values as BCD numbers LSB 9876543210 Oo Loading a constant of 8400h into V7700 puts a 1 in bit 15 and bit 10 This identi
15. its which can be 4095 more meaningful than raw data Convert to engineering units using the formula H High limit of the engineering shown to the right unit range You may have to make adjustments to L Low limit of the engineering the formula depending on the scale you unit range choose for the engineering units A Analog value 0 4095 For example if you wanted to measure pressure PSI from 0 0 to 99 9 then you would have to multiply the analog value by 10 in order to imply a decimal place when you view the value with the programming software or a handheld programmer Notice how the calculations differ when you use the multiplier Analog Value of 2024 slightly less than half scale should yield 49 4 PSI Example without multiplier Example with multiplier its a HL to H L Units A 4095 Units 10 A 4095 ee 100 0 EE 100 0 Units 2024 4095 Units 20240 4095 Units 49 Units 494 Handheld Display Handheld Display V 2001 V 2000 V 2001 V 2000 0000 0049 0000 0494 This value is more accurate FO 04AD 1 4 Channel Analog Current Input The Conversion The following example shows how you would write the program to perform the Program engineering unit conversion This example assumes you have BCD data loaded into the appropriate V memory locations using instructions that apply for the model of CPU you are using Note this example uses SP1 which is always on You could also use an X C e
16. tc permissive contact SPI LD When SP1 is on load channel 1 data to the accumulator V2000 MUL Multiply the accumulator by 1000 to start the conversion K1000 DIV Divide the accumulator by 4095 K4095 OUT Store the result in V2010 V2010 Analog and Sometimes it is useful to convert between the signal levels and the digital values Digital Value This is especially helpful during machine startup or troubleshooting The following Conversions table provides formulas to make this conversion easier Range If you know the digital value If you know the analog signal level 4 to 20mA _ 16D 4095 _ 2995 4 Die AEA 0 to 20mA A 20D D 4095 4095 20 For example if you have measured the _ 4095 _ D A 4 signal as 10mA you can use the formula 16 to determine the digital value that will be p 4095 10mA 4 stored in the V memory location that 16 contains the data D 255 93 6 D 1536 FO 04AD 1 4 Channel Analog Current Input Special Relays The list of other Special Relays associated with the DLO5 PLC is contained in the DLO5 User Manual The following special relays are new and relate to the status of the FO O4AD 1 module or one of its input channels SP600 Chan 1 input type 0 0 20mA 1 4 20mA SP601 Chan 2 input type 0 0 20mA 1 4 20mA SP602 Chan 3 input type 0 0 20mA 1 4 20mA SP603 Chan 4
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