20mA SIGNAL TOTALIZER Installation, Operation and Service Manual
Contents
1. 5 4 PRODUCT 65 nan 7 5 2555 5 2 9 5 1 HANDLING PRECAUTIONS 10 9 5 2 UNPACKING THE 9 5 3 GENERAL INSTALLATION CONSIDERATIONS 2 1 ene 9 6 TROUBLESHOOTING AND nana 11 6 1 ROUTINE MAINTENANCE 022 2 tese tier rre rise rise trier rrr enis 11 6 2 CLEANING 5 0000 11 6 3 VERIFICATION ade ee eee 11 6 4 lt 9 gra vili 12 7 THEORY OFOPERATI N iniciara 13 8 DRAWINGS aan 15 TABLES Table Title Page Table S lt 1 Drawing Br d 15 2013 DynAmp LLC 045447B Page xi Inst2. 10 CHANNEL MATL CK eon ARB eu DWG NO 2 10 065 REVISION DRN DATE CK S DATE 3 14 79 8mm 3 13 MODULE 79 5mm HALF B e 1 onoono 4 20 106 7mm BOTTOM VIEW TOP VIEW NOTE 1 ENCLOSURE MAY BE MOUNTED ON 35mm x 7 5mm OR G PROFILE 32mm X 15mm DIN RAIL 2 MODULE HALF A IS BONDED TO MODULE HALF B WITH RTV ADHESIVE THIS DRAWING AND ALL INFORMATION A DO NOT SCALE PRINT CONTAINED HEREIN IS THE PROPERTY 045427 TOL UNLESS OTHERWISE NOTED D A LLC GROVE CITY OF DynAmp LLC AND MAY Fe yn mp OHIO NOT BE COPIED REPRODUCED 015 015 1 NOR DIVULGED TO UNAUTHORIZED FINISH DRN DATE SCALE TITLE PERSONS WITHOUT THE EXPRESS WRITTEN CONSENT OF DynAmp LLC aero FULL OUTLINE 20mA SIGNAL TOTALIZER IT IS PROVIDED SOLELY FOR THE 7 7 11 20 CHANNEL MODULE CONVENIENCE OF THE USER AND MATL CK D DATE APV DATE SHALL BE RETURNED UPON REQUEST JOB DWG NO REV 02 109178 REVISION DRN DATE CK S DATE NOTE 1 UP TO 2 20mA SIGNALS MAY BE SUMMED USING THIS TOTALIZING MODULE 4 2 TERMINALS WILL ACCEPT WIRE SIZES 24AWG TO 12 INPUT 2 AWG SINGLE WIRE STRANDED 1 14 3 ONE OR TWO WIRES MAY BE CONNECTED TO EACH 3 OUTPUT TERMINAL USING WIRE SIZE 18AWG 2 2 TO 24AWG STRANDED WIRE ey 4 STRIP LENGTH 0 31 8mm OUTPUT 1 5 SCREW TORQUE 5 3 inch pound 0 6 N m 19 20 o 2
3. Cr OUTPUT 2 TOTALIZING MODULE WIRING CONNECTIONS THIS DRAWING AND ALL INFORMATION B M NO REF Oc NOT SCALE PRINT CONTAINED HEREIN IS THE PROPERTY 045752 TOL UNLESS OTHERWISE NOTED D A LLC GROVE CITY ier TRU alae Alte i NOT BE COPIED REPRODUCED i 015 015 NOR DIVULGED TO UNAUTHORIZED FINISH ES TITLE PERSONS WITHOUT THE EXPRESS WRITTEN CONSENT OF DynAmp LLC 4 23 10 N A WIRING DIAGRAM 1 OR 2 CHANNEL 15 PROVIDED SOLELY FOR THE 20mA TOTALIZING MODULE CONVENIENCE OF THE USER AND MATL CK D DATE APV DATE JOB DWG NO REV SHALL BE RETURNED UPON REQUEST E d A 838109177 REVISION DRN DATE CK S DATE NOTE fa bz 1 UP TO 10 20mA SIGNALS MAY BE SUMMED 2 USING THIS TOTALIZING MODULE 2 TERMINALS WILL ACCEPT WIRE SIZES 24AWG TO 12 INPUT 4 INPUT 5 INPUT 6 AWG SINGLE WIRE STRANDED 15 14 15 16 17 18 3 ONE OR TWO WIRES MAY BE CONNECTED TO EACH TERMINAL USING WIRE SIZE 18AWG TO 24AWG 2 9 2 9 2 9 STRANDED WIRE E 4 STRIP LENGTH 0 31 8mm EMIS INPUT 5 SCREW TORQUE 5 3 Ib in 0 6 19 20 2 22 23 24 oo oo Qo Oo LE peer es 52555 INPUT 10 OUTPUT 1 OUTPUT 2 TOTALIZING MODULE WIRING CONNECTIONS B M NO REF THIRD ANGLE THIS DRAWING AND ALL INFORMATION A DONOT SCALE PRINT CONTAINED HEREIN IS THE PROPERTY 044864 D A LLC GROVE CITY OF DynAmp LLC AND MAY E
4. a higher output voltage is required a signal isolator transmitter should be used To generate the higher output voltage the totalizer output is connected as the input signal to the transmitter This output may be scaled for Volts or mA For more information contact DynAmp regarding Item No 044079 Isolator fully Adjust CE 20 253V AC DC Supply INPUT 20mV 200V 0 1 100mA uni bipolar OUTPUT 0 10V 0 20mA 4 20 1000V Working Voltage Basic Insulation 600V In to Out amp 300V Out supply Reinforced Insulation 2013 DynAmp LLC Page 9 045447B Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page 10 045447B Installation Operation and Service Manual 20mA Signal Totalizer 6 TROUBLESHOOTING AND SERVICE 6 1 ROUTINE MAINTENANCE As is true with any electronic circuitry proper maintenance will prolong the service life DynAmp LLC recommends the following program be performed at the recommended interval to prevent or detect damage to the System and to ensure continuing reliable performance Always use appropriate measures to correct any problems found Following the suggested maintenance may assist in early diagnosis of problem s to minimize repairs and down time 6 2 CLEANING INSTRUCTIONS Dust and dirt may be removed from the totalizer by gently vacuum cleaning the unit 6 3 VERIFICATION Periodic verification of the key instruments u
5. ATE CK S DATE E 3209 CHG HOUSING TYPE WAS UEG20 IS UEGH22 5 RM o THIS DRAWING AND ALL INFORMATION CONTAINED HEREIN IS THE PROPERTY OF DynAmp LLC AND MAY NOT BE COPIED REPRODUCED NOR DIVULGED TO UNAUTHORIZED PERSONS WITHOUT THE EXPRESS WRITTEN CONSENT OF DynAmp LLC IT IS PROVIDED SOLELY FOR THE CONVENIENCE OF THE USER AND SHALL BE RETURNED UPON REQUEST 4 20 106 7 NO REF D ALE DO NOT SCALE PRINT 044752 TOL UNLESS OTHERWISE NOTED D A L LC GROVE CITY ed DEC FRAC ANG yn OHIO 015 015 11 FINISH s TET SCALE TITLE FULL OUTLINE 20mA SIGNAL 11 21 08 TOTALIZER MODULE 2 CHANNEL MATL CK D DATE DATE DWG NO REV E E 192021222324 1 ENCLOSURE MAY BE MOUNTED ON 35mm x 7 5mm OR G PROFILE 52mm X 15mm DIN RAIL SYM REVISION DRN DATE CK S DATE E 3231 MIRROR POSITION OF DIN MOUNTING FOOT THIS DRAWING AND ALL INFORMATION CONTAINED HEREIN IS THE PROPERTY OF DynAmp LLC AND MAY NOT BE COPIED REPRODUCED NOR DIVULGED TO UNAUTHORIZED PERSONS WITHOUT THE EXPRESS WRITTEN CONSENT OF DynAmp LLC IT IS PROVIDED SOLELY FOR THE CONVENIENCE OF THE USER AND SHALL BE RETURNED UPON REQUEST E ee 21 0 6 814 NO REF THIRD ANGLE 044864 TOL UNLESS OTHERWISE NOTED GROVE CITY OHIO o pepe BC DynAmp LLC FINISH m Qi La TITLE EFT OUTLINE 20mA SIGNAL 11 21 06 TOTALIZER MODULE
6. April to last Sunday in October 6 30 GMT to 15 00 GMT After Hours Critical Service Emergency Telephone 1 614 871 6906 5 00 PM to 8 00 AM USA Eastern Time From last Sunday in October to first Sunday in April 22 00 GMT to 13 00 GMT From first Sunday in April to last Sunday in October 21 00 GMT to 12 00 GMT Central e mail hel dynamp com DynAmp web www dynamp com 2013 DynAmp LLC Page vii 045447B Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page viii 045447B Installation Operation and Service Manual 20mA Signal Totalizer Page Rev all New 5 7 9 1 5 7 15 B 2013 DynAmp LLC 045447B MANUAL REVISIONS Reason For Revision ECR 1674 5 Remove references to fixed item numbers Harmonize name of product ECO 3290 Totalizers to uni directional and include a bidirectional 1Ch shunt module Date 04 11 11 11 10 13 Page ix Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC 045447B Page X Installation Operation and Service Manual 20mA Signal Totalizer TABLE OF CONTENTS Par Title Page 1 SAEETY E E E E E A souosausssscewes T 1 1 1 OVERVIEW T e nie IRI Eu Eu IN 1 2 HANDLING AND STORAGE 20 21 2 4 2 4 3 3 PRODUCT
7. DynAmp 20mA SIGNAL TOTALIZER Installation Operation and Service Manual Manual Item No 045447 Rev B DynAmp LLC 3735 Gantz Road Phone 1 614 871 6900 www dynamp com Grove City Ohio 43123 USA Fax 1 614 871 6910 helpladynamp com Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC 045447B Page Installation Operation and Service Manual 20mA Signal Totalizer DynAmp LLC WARRANTY Items and components manufactured by Seller for permanent installation are warranted for two 2 years from the date of shipment Items and components manufactured by Seller for portable and temporary use in more than one location are warranted to be free from defects in material and workmanship for a period of eighteen 18 months from the date of shipment Items and components not manufactured and resold by Seller are warranted by their manufacturer Warranty repair shall be at DynAmp s option in the form of repair or replacement of the defective items or components Concerning warranty repairs DynAmp will be responsible for DynAmp provided time material and transportation costs shipping or travel Actual method of warranty repair correction will be determined by DynAmp at DynAmp s sole option Such warranty repair shall constitute a fulfillment of all DynAmp LLC liabilities in respect to said items and components In no event shall DynAmp LLC be liable for co
8. NS THIS DRAWING AND ALL INFORMATION A FRCUMES NOT SCALE PRINT CONTAINED HEREIN IS THE PROPERTY 045427 TOL UNLESS OTHERWISE NOTED UNLESS OTHERWISE NOTED D A LLC GROVE CITY OF DynAmp LLC AND MAY peer yn mp BE COPIED REPRODUCED 015 015 NOR DIVULGED TO UNAUTHORIZED FINISH may SENEC TITLE PERSONS WITHOUT THE EXPRESS WRITTEN CONSENT DynAmp LLC 4 10 N A WIRING DIAGRAM 20 CHANNEL IS PROVIDED SOLELY FOR THE ji 20mA TOTALIZING MODULE CONVENIENCE OF THE USER AND MATL CK D DATE APV DATE JOB DWG NO REV SHALL BE RETURNED UPON REQUEST 5 D 8505179
9. allation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page xii 045447B Installation Operation and Service Manual 20mA Signal Totalizer 1 SAFETY 1 1 OVERVIEW The following are general guidelines that should be followed when installing operating and servicing of the 20mA Signal Totalizer Qualified technicians who are familiar with the warnings and instructions of this manual should perform all installation maintenance and service procedures Always follow all local and plant safety procedures Do not place the equipment in the rain or under water or submerge any part of the system The equipment is not intrinsically safe Do not place in explosive atmospheres Use of the equipment in a manner not specified by the manufacturer can impair the protection provided DynAmp does not assume liability for the customer s failure to comply with the rules and requirements provided in this manual 2013 DynAmp LLC Page 045447B 1 Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page 2 045447B Installation Operation and Service Manual 20mA Signal Totalizer 2 HANDLING AND STORAGE DynAmp products are engineered and manufactured for use in industrial environments However they contain sensitive electronic and mechanical components which may be damaged and fail if not handle
10. d and stored properly All products must be handled and stored with the same care as any precision measurement instrument Severe bumps or jolts may damage internal parts and cause malfunction or premature failure DynAmp products are designed and assembled with conformal coating shock mounting and environmental seals when appropriate or when specified However this protection requires that the product must be properly installed and operational before the protection is fully functional Therefore adequate protection from humidity shock and temperature must be provided during handling and storage prior to installation The handling and storage of equipment must be sufficient to meet the storage temperature and humidity specifications of the product and to prevent any condensation or contact with water or any other liquid The storage location and container or crate must provide adequate protection from precipitation rain snow ice and direct water contact Adequate shelter must be provided to prevent the accumulation of precipitation rain snow ice and water which can lead to the deterioration or failure of shipping containers or crates and cause water ingress Storage in coastal or industrial areas subject to salt laden or corrosive air or areas of wind driven sand or other abrasive dust must be adequate to prevent the deterioration or failure of shipping containers or crates and cause ingress Frequent inspection of storage areas and storage conta
11. ified by the manufacturer can impair the protection provided within DynAmp does not assume liability for the customer s failure to comply with the rules and requirements provided in this manual This equipment is intended for indoor use The ambient temperature must not exceed 70 C For mounting considerations that fall outside the recommended specifications provided in this manual the factory should be contacted for approval This unit is rated for installation category 300V and pollution degree 2 General definitions of safety symbols used on equipment and manual AN Caution Warning Refer to accompanying documents for instructions 2013 DynAmp LLC 045447B Page v Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page vi 045447B Installation Operation and Service Manual 20mA Signal Totalizer DynAmp LLC Customer Support For further assistance contact DynAmp Customer Support at Americas Telephone 1 614 871 6900 Fax 1 614 871 6910 8 00 AM to 5 00 PM USA Eastern Time From last Sunday in October to first Sunday in April 13 00 GMT to 22 00 GMT From first Sunday in April to last Sunday in October 12 00 GMT to 21 00 GMT Europe Telephone 41 22 706 1446 Fax 41 22 706 1311 8 30 AM to 5 00 PM Central European Time From last Sunday in October to first Sunday in April 7 30 GMT to 16 00 GMT From first Sunday in
12. iners or crates is required to ensure proper storage conditions are being maintained If the shipping container or crate is opened and or the equipment is removed for inspection prior to installation the equipment must be repackaged in the original undamaged container or crate in the same manner as it was shipped to prevent environmental damage or placed in a storage location that meets the required environmental and storage conditions General product storage temperature and humidity requirements Storage Temperature 40 to 70 C 40 to 158 F Storage Humidity 85 non condensing DynAmp LLC does not assume liability for the customer s failure to comply with handling and storage requirements For further assistance contact DynAmp customer support 2013 DynAmp LLC Page 3 045447B Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page 4 045447B Installation Operation and Service Manual 20mA Signal Totalizer 3 PRODUCT DESCRIPTION 3 1 OVERVIEW This manual is intended primarily for personnel who install operate or service the 20mA Signal Totalizer and or Shunt Module in the field In this manual 20mA Signal Totalizer or Totalizer is used interchangeably with Shunt Module Complete documentation consists of this manual and applicable drawings Detailed descriptions of the Totalizer detailed specifications installation instructions
13. m and function and should also be familiar with the technical terms warnings and instructions in this manual and all plant safety rules and be able to follow these The totalizer should be inspected for shipping damage at the earliest opportunity Visible damage must be reported to the carrier immediately Concealed damage not evident until the system is operated must be reported to DynAmp LLC immediately 5 2 UNPACKING THE EQUIPMENT Before unpacking any equipment inspect the exterior packaging for visible damage incurred in transit Remove the outer wrapping or packaging Check all items against the packaging slip If damage is suspected during shipping and handling contact DynAmp LLC Customer Support 5 3 GENERAL INSTALLATION CONSIDERATIONS There are two sets of terminals designated for connecting to the totalizer output voltage The two output signals are connected directly in parallel The outputs are not galvanically isolated from each another When both outputs are connected the user must be sure that the inputs of the equipment being connected to are isolated or floating Each totalizer is housed in DIN rail mount enclosure All terminal blocks are finger safe 20 rated The output is custom scaled to a customer specified voltage for a given input The recommended maximum output voltage is 1Volt full scale This minimizes the possibility of errors due to self heating of the precision resistor For applications where
14. mN mp OHIO NOT BE COPIED REPRODUCED rm NOR DIVULGED TO UNAUTHORIZED FINISH 22 E SCALE TITLE PERSONS WITHOUT THE EXPRESS e WRITTEN CONSENT OF DynAmp LLC 9 i 07 N A WIRING DIAGRAM 10 CHANNEL IT IS PROMDED SOLELY FOR THE A 20mA TOTALIZING MODULE CONVENIENCE OF THE USER AND CK D DATE APV DATE OB WENO ey SHALL BE RETURNED UPON REQUEST d REVISION DRN DATE CK S DATE NOTE 1 TO 20 20mA SIGNALS MAY BE SUMMED USING THIS TOTALIZING MODULE 2 TERMINALS WILL ACCEPT WIRE SIZES 24AWG TO 12 AWG SINGLE WIRE STRANDED 3 ONE OR TWO WIRES MAY BE CONNECTED TO EACH TERMINAL USING WIRE SIZE 18AWG TO 24AWG STRANDED WIRE 4 STRIP LENGTH 0 31 8mm 5 SCREW TORQUE 5 3 inch pound 0 6 N m MODULE HALF A MODULE HALF B 1 2 5 4 5 6 7 8 9 10 11 12 oo oo Qo Qo oo oo Qo Qo 0 CA INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 15 14 15 16 17 18 19 20 21 22 25 24 oo oo Qo Oo oo oo Qo Oo er tX INPUT 7 8 INPUT 9 INPUT 10 INPUT 11 12 25 26 27 28 29 50 51 32 55 54 55 56 oo oo Qo Qo oo oo 00 KE do IM m INPUT 13 INPUT 14 INPUT 15 INPUT 16 INPUT 17 INPUT 18 57 38 59 40 41 42 45 44 45 46 47 48 oo oo Qo o oo oo 00 C INPUT 19 INPUT 20 JUMPER OUT JUMPER IN OUTPUT 1 OUTPUT 2 TOTALIZING MODULE WIRING CONNECTIO
15. nday in April to last Sunday in October 21 00 GMT to 12 00 GMT Central e mail hel dynamp com DynAmp web www dynamp com 2013 DynAmp LLC Page 12 045447B Installation Operation and Service Manual 20mA Signal Totalizer 7 THEORY OF OPERATION The principle of operation is a direct implementation of Ohm s Law The voltage drop across the sensing resistor is proportional to the current flowing through it In addition low ohmic value series resistors are added between each current loop positive terminal and the summing junction of the sensing resistor These resistors prevent interaction between the individual current loop circuits The series resistors do not affect the measurement 2013 DynAmp LLC Page 13 045447B Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page 14 045447B Installation Operation and Service Manual 20mA Signal Totalizer 8 DRAWINGS TABLE 8 1 DRAWING LIST Outline and Mounting 2 Channel 02A108925 Outline and Mounting 10 Channel 02A108969 Outline and Mounting 19 Channel 02A109178 Wiring Diagram 2 Channel Totalizer 83A109177 Wiring Diagram 10 Channel Totalizer 83A109021 Wiring Diagram 19 Channel Totalizer 83A109179 2013 DynAmp LLC Page 15 045447B 0 89 22 504 1 ENCLOSURE MAY BE MOUNTED 35mm x 7 5mm OR G PROFILE 32mm X 15mm DIN RAIL REVISION DRN D
16. nsequential damages Information in this document is subject to change without notice 2011 2013 DynAmp LLC All rights reserved Reproduction in any manner whatsoever for purposes other than installation operation or service by the purchaser or end user without the written permission of the DynAmp LLC is strictly forbidden This manual is part of the complete set of product documentation that includes installation operation and service instructions drawings and test results Users should evaluate the information in the context of the complete set of product documentation and their particular applications DynAmp LLC assumes no liability for any incidental indirect or consequential damages arising form the use of this documentation While all information presented is believed to be reliable and in accordance with accepted engineering practices DynAmp LLC makes no warranties as to the completeness of the information 2013 DynAmp LLC iii 045447B Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page iv 045447B Installation Operation and Service Manual 20mA Signal Totalizer Hazard Warning GENERAL INSTALLATION Symbol Identification All installation maintenance and service must be performed by qualified technicians who are familiar with the warnings and instructions of this manual Use of the equipment in a manner not spec
17. sed in modern plants is a requirement of quality assurance programs such as ISO 9000 PERMANENTLY INSTALLED SYSTEM Typically 48 months or as required by plant specific programs The totalizer should be checked if there is an excessive difference between the measurement of the primary measurement system and a secondary back up system Verification should also be performed if any change in the difference between the primary measurement system and secondary system is noted Any time the accuracy or proper operation of a unit or units is in question 2013 DynAmp LLC Page 11 045447B Installation Operation and Service Manual 20mA Signal Totalizer 6 4 SERVICE ASSISTANCE For further assistance contact DynAmp Customer Support at Americas Telephone 1 614 871 6900 Fax 1 614 871 6910 8 00 AM to 5 00 PM USA Eastern Time From last Sunday in October to first Sunday in April 13 00 GMT to 22 00 GMT From first Sunday in April to last Sunday in October 12 00 GMT to 21 00 GMT Europe Telephone 41 22 706 1446 Fax 41 22 706 1311 8 30 AM to 5 00 PM Central European Time From last Sunday in October to first Sunday in April 7 30 GMT to 16 00 GMT From first Sunday in April to last Sunday in October 6 30 GMT to 15 00 GMT After Hours Critical Service Emergency Telephone 1 614 871 6906 5 00 PM to 8 00 AM USA Eastern Time From last Sunday in October to first Sunday in April 22 00 GMT to 13 00 GMT From first Su
18. stallation Operation and Service Manual 20mA Signal Totalizer 4 PRODUCT SPECIFICATIONS Dimensions Shunt Module 89 x 3 3 x 4 20 22 5mm x 79 5mm x 106 7mm 2 Channel Totalizer 89 x 3 3 x 4 20 22 5mm x 79 5mm x 106 7mm 3 to10 Channel Totalizer 1 57 x 3 3 x 4 20 39 9mm x 79 5mm x 106 7mm 11 to 19 Channel Totalizer 3 14 x 3 3 x 4 20 79 8mm x 79 5mm x 106 7mm Weight Shunt Module 0 316 1549 2 Channel 0 316 1549 3 10 Channel 0 516 2579 11 to 19 Channel 1lb 513g Temperature Temperature Coefficient 10 ppm C max Working Temperature 10 to 70 Electrical Signal Input 20mA per Channel Signal Output 1 amp 2 0 to 1V or customer specified full scale value Accuracy lt 0 1 Power Consumption DC 1W typical 2013 DynAmp LLC Page 7 045447B Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page 8 045447B Installation Operation and Service Manual 20mA Signal Totalizer 5 INSTALLATION 5 1 HANDLING PRECAUTIONS The 20mA Totalizer and or Shunt Totalizer is intended for use in industrial measurement systems The totalizer is mounted on a DIN rail The DIN should be inside an industrial enclosure or control room environment The totalizer should be handled with the same care as any precision measurement instrument Personnel involved in the installation should be experienced with equipment of similar for
19. troubleshooting and service instructions and theory of operation are presented The Shunt Module is a single channel bidirectional unit used to remotely terminate a 20mA loop The 20mA Signal Totalizer is a unidirectional unit used to sum 2 to 19 individual 20mA loops It is available in three versions e 2 channel 3 to 10 channel e 11 to 19 channel The Shunt Module and all Signal Totalizers are passive devices 3 2 APPLICATION The DynAmp LLC 20mA Signal Totalizer family is designed to sum together the signal s from 20mA loop outputs s or to remotely terminate a single 20mA loop A unique item number is assigned for each resistance value channel number version Each totalizer is a passive device with mA current inputs and a voltage output The individual 20mA input signals are connected in parallel through a high precision temperature stable resistor The summed output signal is the voltage drop across the precision resistor Each totalizer is housed in a DIN rail mount enclosure All terminal blocks are finger safe IP20 rated The output is custom scaled to a customer specified voltage for a given input The maximum output voltage is 1Volt full scale This minimizes the possibility of errors due to self heating of the precision resistor 2013 DynAmp LLC Page 5 045447B Installation Operation and Service Manual 20mA Signal Totalizer This Page is Intentionally Blank 2013 DynAmp LLC Page 6 045447B In
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