Power Transducer for the Series 90
Contents
1. 2 Overview The PTM Processing module which mounts in the PLC baseplate must be configured as a Foreign module on the Series 90 30 PLC configuration software screen The Q bits and AQ words are used to transfer required commands and parameter data from the PLC to the PTM that determine such things as operating mode gain offsets etc This data will usually be sent in the first few rungs of the ladder program since the PTM will not be functional until it receives this data In return the PTM writes data to the PLC s I and AI memory that is used in the PLC for calculating and reporting PTM measurements Configuration These are the three basic steps to configure a PTM Processing module in a Series 90 30 PLC 1 Determine the PLC baseplate slot that the Processing module will be installed in The section Mounting Location in Chapter 3 offers guidelines that are designed to improve safety and reduce noise coupling 2 Inthe PLC configuration software select the slot determined in Step 1 and configure that slot as a Foreign module 3 Onthe Foreign module configuration screen configure the following memory allocations You will have to configure both the starting memory location address as well as the size for each type Type Size l 16 bits Q 16 bits AI 25 words AQ 2 words Note that there are no additional parameters to set Items such as operating modes gains and meas2. Contentsi ix Contents Table Tal PIM Catalog Wu mbers iere etri e e ere der ee ia econtra y aea 1 2 T ble 122 Specifications td is 1 5 Table 1 3 Faults Relating to Processing Module s Fault LED eeeeeeeeeeeeeen 1 9 Table 2 1 Q Command Status Bits sent to PTM sss eere en ernst en nhn nnn 2 3 Table 2 2 Missing Voltages Currents Reconstruction Dependencies sess 2 4 Table 2 3 AQ Parameter Number Value sent to PTM sss entere eere entres 2 5 Table 2 4 Parameter Numbers Sent to PTM via Second AQ Word sse 2 6 Table 2 5 AI Word Feedback Data from the PTM in 3 Phase Power Monitor Mode 2 8 Table 2 6 AI Feedback Data from the PTM in Single Phase Power Monitor Mode sss 2 9 Table 2 7 AI Feedback Data from the PTM in Synchro Monitor Mode coooccoccconononccionoconoconnconnonncconnos 2 11 Table 2 8 Relative Reporting Mode Reference Values ssssssseseeeeeeee ener ener enne 2 12 Table 2 9 Absolute Reporting Units sess eene enne nennen eren nennen 2 13 Table 2 10 Theoretical Worst Case Rollover Times ssssessesseesseeeeeee enne nennen 2 14 Table 2 11 Parameters Common to Relative and Absolute Modes seen 2 16 Table 2 12 ol Status Bits from the PTM ssssesssesseeeeeeeeeeenee nennen nnne 2 17 Power Transducer for the Ser
3. IC693CBL341 39 1 meter interface cable Difference Between IC693PTM100 and IC693PTM101 The only difference between the IC693PTM100 and IC693PTM101 is in the length of interface cable supplied with each system The PTM100 comes with a 19 0 5 meter cable and the PTM101 comes with a 39 1 meter cable Operating Modes 1 2 The PTM operates in one of the two following modes which are selectable by a Q bit in the user s PLC application program Power Monitor Mode In this mode the PTM samples AC voltage and current and calculates the RMS values of these waveforms There are several sub modes that are selected via Q bits in the PLC ladder logic program These are 1 Single Mode This sub mode has two options Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A e Three single phases e One 3 wire single phase 120 240 2 3 Phase Mode In this sub mode complex power complex energy consumption and power factor are calculated This sub mode has two options e Wye e Delta Synchro Monitor Mode In this mode the PTM samples three AC voltages produced by a generator and one voltage from the power grid The module then provides information on the voltages frequencies and relative phase Processing Module Interface Board The PLC CPU controls the PTM Processing module by sending it several Q bits and AQ words during each PLC sweep These Q bits and AQ words represent comman
4. L1 N L2 Branch circuit 15A max When used without additional CTs Va COM Vb 1A Fuses CT Shorting Block Frame Ground Figure 3 3 Connections for 120 240 VAC system with CTs The connections given in the figure above detail the installation for a typical North American 120 240 volt AC 3 Wire Single Phase connection The neutral is connected to a ground point usually at the main power distribution panel Extra mandatory equipment includes protection fuses for the voltages and a CT shorting block These will allow replacement of the PTM Interface board with the system still energized To replace the Interface board the fuses are removed and the CTs shorted Then the connections on the Interface board can be removed safely The Processing module can be replaced simply by powering off the PLC and replacing the module This can be done without disturbing the wiring field wiring on the Interface board Operation of the Interface board at rated currents can be done without CTs but this configuration is not recommended Currents will necessarily have line potential thus additional safety concerns must be carefully addressed Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A GFK 1734A Branch circuit 15A max gt he lo When used without additional CTs Q 9 COM 1A Fuses CT Shorting Block QS S S el a s i o mone LLL a LL m lt O S in D
5. 00012 0010 FUNC 37 MOVIN P1 00001 P2 00001 P3 R0001 END OF PROGRAM LOGIC 0011 END OF PROGRAM GFK 1734A Appendix A Ladder Logic Example A 7 Appendix C693PTM340 341 PTM Interface Cables b These cables connect the PTM Processing module to the PTM Interface board The only difference between the two cables is their lengths e IC693CBL340 is 19 inches 0 5 meter long e 1C693CBL341 is 39 inches 1 meter long Figure B 1 Figure IC693CBL340 341 PTM Interface Cables GFK 1734A B 1 Series 90 30 PLC Processing Module 1C693CBL340 341 PTM Cable Interface Board Figure B 2 PTM Component Mounting and Cable Connection The PTM Interface board connects to hazardous voltages Before installing testing or troubleshooting this board you should refer to the complete instructions in this manual Failure to follow the guidelines in the PTM User s Manual may result in personal injury equipment damage or both PTM Products Ordering Information The Processing module and its Interface board are considered to be a matched set Therefore they are not sold separately The two cables however may be ordered as separate items There are four catalog numbers in the PTM product line e IC693PTM100 This contains the Processing module its matched Interface board and the 19 0 5 meter interface cable e 1C693PTM101 This contains the Processing module its ma
6. AIO0016 INRMS Neutral Current RMS AI0017 PF TOT Total 3 Phase Power Factor AI0018 LFREQ Line Frequency SAI0019 APD 15M Tot 3 Ph 15min Active PwrDmd SAI0020 RPD 15M Tot 3 Ph 15min Reactive PwrDmd AI0021 LSW ENA Tot 3 Ph Active Energy AI0022 MSW ENA Tot 3 Ph Active Energy AI0023 LSW ENR Tot 3 Ph Reactive Energy SAI0024 MSW ENR Tot 3 Ph Reactive Energy AQ001 POINTER Parameter pointer SAQ002 VALUE Paramter value Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Program PTM 12 04 98 08 07 ALW ON S0007 t MOVE_ INT PTM par ameter table o ffset OFFSPTM SROOO1 IN Q LEN 00001 0003 LD lt lt RUNG 5 STEP 0004 FUNC 37 C PROGRAM LM90 PTM GE SERIES 90 30 90 20 MICRO v6 01 Power Transducer lt lt RUNG 4 STEP 0001 gt gt FST_SCN 50001 MOVE_ INT PTM par ameter table o ffset OFFSPTM CONST IN Q RO001 00001 LEN 00001 0001 LD S0001 0002 FUNC 37 MOVIN P1 00001 P2 00001 P3 ROOO1 0003 gt gt Paramet er pointer POINTER AQ001 S0007 MOVIN Pl ROOO1 P2 00001 P3 AQ001 Block MAIN Page 5 REFERENCE NICKNAME REFERENCE DESCRIPTION 250007 ALW ON S0001 FST SCN SROOOL OFFSPTM PTM parameter table offset AQ001 POINTER Parameter pointer GFK 1734A Appendix A Ladder Logic Example A 5 A 6 Program PTM C PROGRAM LM90 PTM 12
7. Interface Board Figure 3 2 PTM Mounting Location Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Safety Cautions Interface Board Frame Ground Connection The basic system configuration consists of the Series 90 30 PLC the PTM Processing module and the PTM Interface board A special interface cable is used to connect the Processing module to the Interface board The Interface board must have frame ground connected The frame ground will ensure that the metal safety cover over the components on the Interface board is safely at ground potential In the diagrams following specific wiring configurations are detailed Make sure that the safety features detailed in the drawings are included in your installation Failure to do so could result in personal injury or death and equipment damage General Safety Warnings WARNING DO NOT TOUCH the connectors or wiring after powering up the PTM system Hazardous voltages exist and death or injury may result FUSES on input and output leads for the Potential Transformers PTs are mandatory CURRENT TRANSFORMER CT shorting bars are mandatory The Interface board frame ground connection must always be installed and must be installed before any other wiring is attached GFK 1734A Chapter 3 Installation 3 3 Wiring Diagrams 3 4 Be sure you read and understand all safety related information in this manual before attempting to wire or use the PTM
8. B Generator Voltage RMS value of Phase C Generator Voltage Phase Shift between Grid Line and Generator Voltages Generator Frequency Grid Line Frequency Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Al Words in Synchro Monitor Mode The data reported to the PLC by the PTM unit running in Synchro Monitor Mode is detailed in the following table To determine exact memory address for these AI words determine the starting address for the PTM s AI memory this is assigned when the PTM is configured as described in Configuration earlier in this chapter then match the word to the applicable memory location For example if the starting AI address was configured to be AI0016 then the 1st word in the table below would be AI0016 the 2nd word would be AI0017 the 3rd word would be AI0018 etc Table 2 7 Al Feedback Data from the PTM in Synchro Monitor Mode AI Word Data Sent from Processing Module to PLC in Single Phase Power Monitor Mode AI Word Description RMS value of Phase A Grid Line Voltage RMS value of Phase A Generator Voltage RMS value of Phase B Generator Voltage Firmware Version Diagnostic Value Ist GFK 1734A Chapter 2 Configuration and Data Transfer 2 11 Interpretation of Reported Results Many reported values can be configured as relative values with respect to reference values or they can represent those physical variables directly in Volts Amperes Watt
9. S L S i N LOAD gt Frame Ground Figure 3 4 User Connection Diagram WYE 3 Phase 4 Wire system The connections detailed in Figure 3 4 show the situation where a 3 Phase 120 208V system is being monitored Isolation PTs are not required but are recommended as an additional safety measure The neutral must be connected to a ground point and this is usually at the main power distribution panel Chapter 3 Installation 3 5 3 6 As with the previous configuration the unit can be wired in this configuration without CTs This configuration is not recommended again since the current leads will be at line potential raising additional safety concerns The CT used on the neutral is not necessary and only provides the user with a direct measurement of neutral current If this CT is not included the PTM will calculate the neutral current from the addition of all the three line current inputs L1 L2 L R 3 Branch circuit 15A max 5 O o When used without additional CTs 1A Fuses Vc CT Shorting Block ANAC E NENNEN lt o la c ill E E Ib 4 LL c 92 E Ib 02 Ed Ic LOAD Frame Ground Figure 3 5 User Connections for 120 208 3 Phase 3 Wire Delta system The connections detailed in Figure 3 5 show how a delta load is connected to the Interface board Note that the PTM sees the installation as a WYE system and must be configured as such The Interface board circuitry itself forms an independent common neutral
10. are required Also included in Figure 3 8 are the additional connections to phase B and C generator voltages and all line currents After the breaker is closed the PTM mode can be changed to monitor the power produced by the generator Chapter 3 Installation 3 9 3 10 Breaker GRID Connections Generator VY Ye 11 OS i L3 Frame Ground GO GG CT Shorting Block HE al i A A PTs SN o SN o Vga Sp SN p COM 1A Fuses on secondary Frame Ground Figure 3 9 Delta Synchro Power Monitor connection In Figure 3 9 another possible generator connection method is pictured In this arrangement the system is connected as a Delta system and once the breaker is closed the system can go into measuring power using the two watt meter method described earlier The PTs used must scale the voltages down to the 120VAC nominal voltage required by the PTM All scale factors present due to the PTs and CTs must be applied to the readings returned to the PLC by the PTM Fuses on the potential transformer primaries and secondaries are required A fuse failure is an indication of wiring problems within the system Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Appendix Ladder Logic Example A Note This example was created with Logicmater programming software It contains the logic necessary to transfer Parameter data to the PTM via the two AQ words See Chapter 2 for a discussion of t
11. of Terms and Acronyms eene ee eene ee eene e eene setas eee ense seen seen aee C 1 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Figure 1 1 Figure 1 2 Figure 1 3 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 Figure 3 7 Figure 3 8 Figure 3 9 Figure B 1 Figure B 2 GFK 1734A Contents Series 90 30 PTM Processing Module sees eene enne nnne 1 8 PTM Interface Circuit Board 5 2 trece tne teh rei ge Pe ete Feder kn 1 8 IC693C BESdQ SAL PD MCAD OS doter abro etg digestio etude ci 1 9 B sic system configuration ocn tree ec re re aoo A E E aT 3 2 PIM Mounting Location oserei etie tre hn e deti rt esfera e e lea aaah cut ee etie 3 2 Connections for 120 240 VAC system with CTS sessi 3 4 User Connection Diagram WYE 3 Phase 4 Wire system sssssseeeeeeeeee 3 5 User Connections for 120 208 3 Phase 3 Wire Delta system sse 3 6 Connection to 3 Phase 4 Wire system with 3 PTSs sees eee 3 7 Configuration for 3 Phase 3 Wire Delta system with 2 PTS 3 8 Wye Synchro Power Monitor connection esses enne ener 3 9 Delta Synchro Power Monitor connection essere enne enne enne nnns 3 10 Figure IC693CBL340 341 PTM Interface Cables sse B 1 PTM Component Mounting and Cable Connection ooooncocinnononnnonnconnconncon cono noconoconoconacannnnananass B 2
12. ofthe connection cable between the PTM Interface board and the PTM Processing module the leads to user potential and current transformers and frame ground connections from the Interface board to the chassis No CT shorting bars are provided on the PTM Interface board and must be supplied by the user The maximum length of the PTM Interface Cable is one meter with shorter lengths recommended In all installations the use of potential transformers is recommended and will provide complete isolation for all signals connected to the PTM Interface board The signals on the PTM Interface board are scaled down to 1 VAC for processing by the PTM processor module General Wiring Notes GFK 1734A In the following connection diagrams the line connections are labeled L1 L2 and L3 When the user wires the Interface board into a system the decision must be made which line will correspond to which phase Usually L1 will correspond to phase A L2 with phase B and L3 with phase C Once the user decides how they will connect the system together the labels L1 L2 and L3 can be changed to A B and C according to how the user wishes Then the diagrams can be followed and the connections made Since phase rotation in not important to the PTM the user is free to select any one of six connection possibilities for the wiring The Interface board can accommodate wire sizes up to 1 OAWG Copper wires and ferrules are recommended for Interface board connections b
13. variable voltage or current exceeds the Reference Value This may also occur if the channel gain constants are incorrectly set 7th Bit Phase A Voltage If this flag bit is set the Phase A Voltage V4 in Power Monitor Mode or Vga in Synchro Monitor Mode is not applied or is below 30 Hz in frequency The PTM unit can not execute any calculations under these conditions All the reported values except the total energy in Power Monitor Mode are reported as zeros 8th Bit Phase Polarity If flag bit is set the Phase Active Powers in the 3 phase system have mixed signs which is an indication that either one of the voltage or current of one phase is incorrectly connected in reverse 9th 16th Bits Vn In If one of these status bits is set the applicable variable is not being measured or cannot be reconstructed This indicates that the associated value returned by the PTM is invalid and should not be used For example when in Delta Mode the neutral current cannot be reconstructed from the phase currents thus the 10th Bit would be set to logic one to indicate the value of Iy neutral current is invalid in Delta Mode the neutral current does not exist Chapter 2 Configuration and Data Transfer 2 17 Chapter 3 Installation The PTM passes the requirements of CE mark testing when mounted in a metal cabinet The metal cabinet reduces emissions by both the module and the PLC that interfaces to it Field wiring to the PTM consists
14. 0 1 x 3 phase current 1 neutral current Impedance 50mOQ Range 0 7 5A RMS 5A nominal Frequency 35 70 Hz Chapter 1 PTM Description and Specifications 1 5 1 6 Table 1 2 Continued Measurement Accuracy Voltage 0 296 Current 0 2 kW kVAR kVA 0 4 kWH kVARH kVAH 0 4 Power factor 1 Frequency 0 05 Hz Phase 1 09 Resolution 14 bit A D converter Interface Board Input Terminal Ratings Current Voltage 15 Amps maximum 150 volts maximum PTM Measurement Ranges Voltage inputs Current inputs Frequency 10 to 150Vrms 120Vrms nominal 0 to 7 5 Amps rms 5A rms nominal 35Hz to 70Hz Measurement Data Scaling All data is scaled to range from 0 to 32 767 left justified or in engineering units user selected Automatic Data Exchange PLC Memory Requirement I Q AI AQ 16 bits 16 bits 25 words 2 words Data Exchange Time Between PLC 8 PTM A complete data exchange between the PTM and PLC occurs during each PLC scan Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A GFK 1734A Table 1 2 Continued Operating Environment Enclosure Mounting Required Operating Temperature 0 to 55 C Storage Temperature 40 to 85 C Humidity 5 to 95 non condensing Vibration 3 5mm 5 9Hz 1G 9 to 150Hz Mechanical Shock 15 G s for 11ms Agency Approvals and Li
15. 04 98 08 07 GE SERIES 90 30 90 20 MICRO v6 01 Power Transducer Module lt lt RUNG 6 STEP 0005 gt gt ALW_ON 9S0007 ARRAY MOVE _ WORD PTM OFFSET paramet Paramte er r value OFF PTM VALUE R0002 SR DS AQ002 LEN 00012 PTM par ameter table o ffset OFFSPTM ROO01 SNX CONST DNX 00001 CONST N 00001 0005 LD S0007 0006 FUNC Pl R0002 P2 ROOO1 P3 00001 P4 00001 P5 00012 P6 AQ002 REFERENCE NICKNAME REFERENCE DESCRIPTION S0007 ALW_ON R0002 OFF PTM PTM OFFSET parameter SROOOL OFFSPTM PTM parameter table offset SAQ002 VALUE Paramter value Power Transducer for the Series 90 30 PLC User s Manual January 2000 Block _MAIN Page 6 GFK 1734A Program PTM C PROGRAM LM90 PTM Block MAIN 12 04 98 08 07 GE SERIES 90 30 90 20 MICRO v6 01 Page 7 Power Transducer Module lt lt RUNG 7 STEP 0007 gt gt ALW_ON 50007 ADD GE INT INT PTM par PTM par PTM par ameter ameter ameter table o table o table o ffset ffset ffset OFFSPTM OFFSPTM OFFSPTM 4 R0001 I1 Q R0001 ROOO1 I1 Q MOVE_ INT PTM par ameter table o ffset OFFSPTM CONST 12 CONST 12 CONST IN Q RO001 00001 00012 00001 LEN 00001 0007 LD S0007 0008 FUNC 60 ADD Pl ROOO1 P2 00001 P3 ROOO1 0009 FUNC 55 GE Pl ROOO1 P2
16. GE Intelligent Platforms Programmable Control Products Power Transducer for the Series 90 30 PLC User s Manual GFK 1734A April 2010 GFL 002 Warnings Cautions and Notes as Used in this Publication Warning notices are used in this publication to emphasize that hazardous voltages currents temperatures or other conditions that could cause personal injury exist in this equipment or may be associated with its use In situations where inattention could cause either personal injury or damage to equipment a Warning notice is used Caution notices are used where equipment might be damaged if care is not taken Note Notes merely call attention to information that is especially significant to understanding and operating the equipment This document is based on information available at the time of its publication While efforts have been made to be accurate the information contained herein does not purport to cover all details or variations in hardware or software nor to provide for every possible contingency in connection with installation operation or maintenance Features may be described herein which are not present in all hardware and software systems GE Intelligent Platforms assumes no obligation of notice to holders of this document with respect to changes subsequently made GE Intelligent Platforms makes no representation or warranty expressed implied or statutory with respect to and assumes no responsibility for
17. Laboratories tests Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A UL CUL A dual United States Canadian listing mark of Underwriter s Laboratories May also be C UL US VA Volt ampere Unit of apparent electrical power var Volt ampere reactive Unit of reactive electrical power Watt hour Unit of electrical energy equal to consuming or converting power at the rate of one watt per hour Equal to 3600 joules Wh Watt hour wye A 3 phase circuit which when drawn resembles the letter Y GFK 1734A Appendix C Glossary of Terms and Acronyms C 3 GFK 1734A AI words table 2 11 AQ Words parameters 2 5 table 2 5 lI bits status bits 2 17 table 2 17 Q bits table 2 3 A Absolute reporting mode 2 13 Absolute reporting mode units table 2 13 Accuracy measurement Actual value formulas 2 13 Agency approvals listings 1 1 7 Approvals listings agency 1 7 B Backplane isolation 1 5 Baseplate compatibility 1 4 C Cabinet mounting Cables eM eei PTM interface Catalog numbers of PTM products 1 2 12 Communication protocol 2 2 Compatibility with CPUs and baseplates 1 4 Configuration l bits Q bits parameter data 2 2 Configurations power measurement list 1 7 CPU Index compatibility 1 4 Data maintaining reported to PLC scaling 1 6 Definitions terms and acronyms C 1 Demand valu
18. Monitor Mode seen 2 8 AI Words in 3 Wire Single Phase Power Monitor Mode sss 2 9 Data reported to the PLC for Synchronization Monitoring eene 2 10 AI Words in Synchro Monitor Mode sse 2 11 Interpretation of Reported Results sse ener 2 12 GENE 2 12 Absolute Reporting Mode sse ener enne 2 13 Phase tit POWSE eorr e red ete cette dte bre eee n rer i Pee 2 13 Active and Reactive Total Energy AI Words 21 24 sse 2 13 Handling AI Word Rollover sseseeeeeeeeeenn eee 2 14 Maintaining Your Data il 2 14 Sliding Average 3 Phase 15 Minute Power Demand AI Words 19 and 20 2 15 Total Power Factor V6AI Word 17 sss eene 2 15 Parameters Common to Both Reporting Modes sse 2 16 JI Status flags returned by the PTM 0 ccccssccssecsteceteceneceecesecseeeseeeeeeeeeseeeseeeeeeeeesaees 2 17 IS CTI SD AAA A issado s bisses asisas sosaieti sasies eiS 3 1 Genera Wiring Notes deal s 3 1 Mou ntirig Locations eei oeiee dada aia ce pe se ed tae ide eet tede 3 2 Safety OCIO 3 3 Interface Board Frame Ground Connection cccccesccesscessceeeeeeeeeeeeeeeeeseeeeeeaeeaees 3 3 General Safety Warnings esses eene nennen nnne enr ener 3 3 Ma AAA 3 4 Ladder Logic Example aia A 1 1C693PTM340 341 PTM Interface Cables eere eee eee reete tena B 1 Glossary
19. Product list PTM products 1 2 Programming ladder logic example A 1 Protection features 1 7 PTM cable picture R Relative reporting modej2 12 table 2 12 Reported results interpretation 2 12 Resolution measurement 1 6 Rollover AT word 2 14 Safety installation warnings Scaling measurement data 1 6 Scan time data exchange Specifications measurement Status I bits 2 17 Synchro Monitor mode 2 22 11 T Temperature operating and storage 1 7 Vibration rating 1 7 W Wiring notes 1 Wiring diagram 120 208 3 phase 3 wire delta 3 6 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Index 120 240 single phase 3 4 3 phase 3 wire delts with 2 PTs 3 8 3 phase 4 wire with 3 PTs 3 7 delta synchro power monitor 3 10 wye synchro power monitor wye 3 phase 4 wire 3 5 Wiring diagrams 3 4 GFK 1734A Index Index 3
20. Va ab 0 valid 1 invalid Ia O valid 1 invalid Vb bc 0 valid 1 invalid Ib O valid 1 invalid Vc ca 0 valid 1 invalid PTM Op O disabled 1 enabled PTM Mode 0 Power 1 Synchro Measurement Mode 0 single 1 3Ph Single 0 3 1 1 3PH 0 Y 1 Delta Display Mode 0 Relative 1 Absolute Spare Spare Spare PT Gen Phase A O NA 1 USED CT Neutral O NA 1 USED PTa ab 0 NA 1 USED CTa O NA 1 USED PTb bc O NA 1 USED CTb O NA 1 USED PTc ca O NA 1 USED CTc O NA 1 USED PTM parameter table offset PIM OFFSET parameter PTM Module Gain PTM Channel 1 PTMIM gain PTM Channel 2 PTMIM gain PTM Channel 3 PTMIM gain PTM Channel 4 PTMIM gain PTM Channel 5 PTMIM gain 6 7 PTM Channel PTMIM gain PTM Channel PTMIM gain PTM Channel 8 PTMIM gain Diagnostic Address Phase A Voltage RMS Phase A DC Component Phase A Current RMS A 3 Program PTM C PROGRAM LM90 PTM Block MAIN 12 04 98 08 07 GE SERIES 90 30 90 20 MICRO v6 01 Page 4 Power Transducer Module AIO0004 PAWATTS Phase A Active Power AIO0005 PAVARS Phase A Reactive Power SAI0006 VBRMS Phase B Voltage RMS AI0007 VB DC Phase B DC Component AIO008 IBRMS Phase B Current RMS AIO0009 PBWATTS Phase B Active Power AIO0010 PBVARS Phase B Reactive Power AIO0011 VCRMS Phase C Voltage RMS AI0012 VC DC Phase C DC Component AI0013 ICRMS Phase C Current RMS AIO0014 PCWATTS Phase C Active Power AIO0015 PCVARS Phase C Reactive Power
21. alue of 0 corresponds to the gain of 0 a value of 16384 0x4000 corresponds to the gain of 1 and a value of 32767 0x7FFF corresponds to the gain of 2 The default value is close to 16384 0x4000 i e the default gain is close to 1 Note that these gains affect the input signals and cannot be used as scale factors for PTs or CTs Scale factors for PTs and CTs must be applied in the PLC program Word 11 Zero Diagnostic Address A zero value sent to the PTM unit will return the Firmware Version as a content of the 25th AI word see AI tables later in this chapter Non zero values are reserved for manufacturing diagnostic purposes Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Data Reported to the PLC for Power Monitoring Purposes The units reported depend on the whether the Relative or Absolute Reporting mode is selected See the section Interpretation of Reported Results later in this chapter for details e Status Bits e RMS value of Phase or Line to Line voltages e DC Component of Phase or Line to Line voltages e RMS value of Phase Current e Phase Power e RMS value of Neutral Current e Total 3 phase Power Factor e Line Frequency e Total 3 phase 15 minute Power Demand e Total energy GFK 1734A Chapter 2 Configuration and Data Transfer 2 7 AI Words in 3 Phase Power Monitor Mode The data reported to the PLC by the PTM unit running in the 3 Phase or 3 x single phase Power Monito
22. apter 2 for details If this LED flashes or blinks it may indicate an intermittent fault condition For example if an AC input voltage level were varying above and below the limit value the LED would turn ON and OFF correspondingly Table 1 3 Faults Relating to Processing Module s Fault LED OF PTM Or Fault Possible Causes Fault Bit Phase A not present Blown fuse poor or missing connection 6th I bit Over range condition on one Input voltage or current values too high or more inputs 7th lI bit Phase polarity fault Most likely due to a wiring change Sth I bit GFK 1734A Chapter 1 PTM Description and Specifications 1 9 User Supplied Equipment Requirements 1 10 The user must supply the following components depending upon the application This equipment includes Current transformers Potential transformers 1 Amp fuses for each of the voltage leads connected to the PTM Interface module 1 Amp fuse for the common or return line for the voltage lead on the Interface module A CT shorting block for each current transformer CT connection used on the PTM Interface module when used with external CTs Branch circuit fuses or breakers rated at 15 Amps if the PTM is used to monitor a small load directly with no additional CTs Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Chapter Configuration and Data Transfer
23. briefly when the unit is reconfigured Clearing this bit will reset the accumulated real and reactive powers When enabled the PTM begins operation if the A phase voltage is present V4 for Power Monitoring or Voa for Synchro Mode Bit2 PTM Mode This bit determines the PTM operational mode If this flag bit is cleared the PTM runs in Power Monitor Mode In Power Monitor Mode the PTG4 should not be used and the PT PT and PT measure the Phase Voltages of the Grid If the PTM Mode flag bit is set to 1 the PTM runs in Synchro Monitor Mode In Synchro Monitor Mode the PTG4 must measure the Phase A Voltage of the Grid and the PT PTg and PTc measure the Generator Phase Voltages PT and PT are optional in this mode with the appropriate Q bits reset Bit3 Power Monitor Mode Determines relation among the phases If cleared the phases are considered to be independent 1 e single otherwise they are considered to belong to one 3 phase system Bit4 Single 3 phase Mode If Power Monitor Mode is set as Single Mode and this flag bit 1s cleared the monitored system 1s considered as 3 single phase system If the flag bit is set the monitored system is considered as one 3 WIRE single phase 120 240 system If Power Monitor Mode is set as 3 phase this flag bit indicates WYE or DELTA connection of the phases Bit5 Display Mode If Display Mode flag bit is cleared the reported values of the measured variables Voltage Current and Power
24. d 11 No Connection 12 Frame Ground 13 No Connection 14 VG Voltage Generator negative lead 15 IN Current Neutral negative lead 16 V A Voltage phase A negative lead 17 IA Current phase A negative lead 18 No Connection 19 VB Voltage phase B negative lead 20 IB Current phase B negative lead 21 VC Voltage phase C negative lead 22 IC Current phase C negative lead 23 No Connection 24 No Connection 25 Frame Ground GFK 1734A Appendix B 1C693PTM340 341 PTM Interface Cables B 3 Appendix C GFK 1734A Glossary of Terms and Acronyms A D ANSI Apparent power CE mark CISPRII CT Current transformer delta DIN rail grid Analog to digital Refers to converting an analog signal to a digital form that can be used by a PLC or other digital microprocessor based system American National Standards Institute The product of rms voltage and rms current in a circuit with no consideration for phase angle European compliance mark of the European Union Generally required for products sold in Europe International Special Committee on Radio Interference Standard 11 pertains to industrial equipment Current transformer An instrument transformer used for measuring electrical current The conductor to be measured is passed through the current transformer s center one or more times and serves as the transformer s primary winding Or if the transformer has a built in primary winding it is conn
25. d from the other two by the Processing module These must be indicated as not installed by the user All additional scaling factors must be applied to the values being returned by the PTM by the 90 30 PLC program For safety considerations both the primaries and secondaries of the potential transformers must be fused A fuse failure is an indication of wiring problems within the system Note that in this configuration the phasing of the potential transformers is slightly different 3 8 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A GFK 1734A Breaker GRID CTs Connections Generator a e L4 AAA AL cet L oOo To To o Frame Ground la la Iba Ib lc Ic CT Shorting Block Pu 2a ame ee 1A Fuses on secondary rc n2 rc co SQ 00 OY ELEZE 7 Frame Ground Figure 3 8 Wye Synchro Power Monitor connection In Figure 3 8 above the PTM is connected between two systems the Grid and Generator sub systems The PTM is selected to be in the Synchro Monitor mode when the breaker is open and the two systems are not running in synchronization When the PLC program determines that the voltages and phases match between Phase A voltage on the grid and Phase A voltage on the generator then the PLC can safely close the breaker When the PTM is used only in the Synchronization Monitoring mode only the two PTs associated with Phase A of the generator and Phase A of the grid
26. ds such as Enabled Disabled Power Synchro Mode Display Mode and Gain values In return the Processing module provides information to the PLC CPU by sending it several I bits and AI words each PLC sweep The information sent by the Processing module includes voltage current power and phase values as well as discrete fault status The PTM Interface board has one 3 phase voltage and one 3 phase current input one 1 phase neutral current input and one additional 1 phase voltage input The Interface Board has 8 separate input terminals for these voltage and current inputs Its terminal block accepts the 10AWG size wire commonly used in power utility applications The Interface board uses a DB 25 connector and is connected to the Processing module via one of the IC693CBL340 341 shielded cables The Interface board translates the 0 to 5 A current transformer CT signals and the 120V potential transformer PT signals to 0 to 1 VAC signals for use by the Processing module The Interface board is not equipped with CT shorting bars These must be provided separately by the user Data Reported to the PLC for Power amp General Monitoring Purposes GFK 1734A Common Functions All configurations e Module Status Word e Fault Condition Reporting Power Synchronization Functions e Data calculation rate 20ms Y 50hz 16 67 ms 60Hz Chapter 1 PTM Description and Specifications 1 3 e Data latency of less than 5ms plus Y of line frequency pe
27. e sliding average 2 15 Diagrams wiring 3 4 Dimensions cable Interface borad 1 8 Processing module E Energy total use reported 2 13 Environment operating Fault LED indicator on PTMPM 1 9 G Generator line frequency 2 16 Grounding Interface board 3 3 Humidity rating 1C693CBL340 341 ordering information picture pin out list Installation line phasing 3 1 mounting beu safety consideratio E wiring diagrams 3 4 Index 1 Index Index 2 Interface board dimensions picture Isolation backplane 1 5 Ladder logic example A 1 LED Processing module 1 9 Maximum input values 2 12 Measurement accurac ranges 1 6 Mechanical shock rating 1 7 Memory PLC requirement 1 6 Mode 3 phase power monitor 2 8 3 wire 1 phase power monitor 2 9 absolute reporting power monitor 1 2 2 2 relative reporting synchro monitor 1 3 Modes operating 1 2 Monitoring aua 2 72 10 Mounting cabinet 3 1 Interface board dimensions 1 8 location 3 2 P Parameter data 2 2 Parameters for AQ words table 2 6 Peak input values 2 12 Phase power 2 13 Phase shift between generator and bus 2 16 Power factor data 2 15 Power Monitor mode 2 2 mode 3 phase 2 8 mode 3 wire 1 phase 2 9 Power requirements Processing module 1 5 Processing module dimensions picture power requirements 1 5
28. ected in series with the conductor to be measured A built in secondary winding produces a relatively low current proportional to the primary current This secondary current is used for the measurement A 3 phase circuit which when drawn resembles a triangle or the Greek letter delta A A standard size mounting rail measuring 35 x 7 5 mm The DIN rail is usually mounted to a panel and is often long enough to hold several devices The devices that mount to a DIN rail snap on and off the rail and do not require any additional mounting hardware Unit of acceleration equal to the acceleration of gravity which is approximately 32 feet 9 8 meters per second per second In power terminology refers to a network for distributing power integers k kilo kvah kvar kvarh kWh Phase angle PLC Potential transformer Power factor PT PTM Reactive Reactive power Real power rms UL A set of numbers composed of all positive and negative whole numbers including zero Fractional and decimal numbers are excluded Abbreviation for kilo see kilo A prefix equal to a value of 1000 Kilovolt amperes per hour Kilovar 1000 vars see var Kilovars per hour Kilowatt hour Unit of electrical energy equal to 1000 Watt hours An angular measurement of the difference in time occurrence between corresponding points on two waveforms In a reactive circuit there will be a finite phase angle between voltage and current wav
29. eeeeneenenenenes 1 7 Power Measurement Configurations essen 1 7 Protection ECat te 2 tana nad ld da 1 7 Figures and Dimensions einder niire eee enne eene a iE nnne 1 8 Processing Module 4 x UG AR edt e E iere tel d eie uote 1 8 Interface Board ia a Backes 1 8 I C693CBLE340 341 Cableado tiit E ipe tiene EH Ie oo b reds 1 9 Processing Module s LED Indicators esses eene 1 9 User Supplied Equipment Requirements ccsccesccesscessceeeceeeeeeeeeeeeeseeeeeeaeenaes 1 10 Configuration and Data Transfer eee eee ee eere ee eene ee eene sees seeessseees DL OVerview vastum Ta 2 1 Configuration ie o ete roe enc tela REA A ree ees eder etn ev erbe 2 1 Power Monitor Mode ccccccccccccssccsssceesseceeseeceseecesseceesseceeseeceseeeesaeceesseceeeeesseeeesseeeeseeens 2 2 Synchro Monitor Mode esses enne ener enne 2 2 Parameter D lt icit eie eto RD ER and 2 2 PLC PTM Communication Protocol esses entente nnne 2 2 Data required from PE Critican cocotero REFER RA XER REESE OE terre riri Contents Chapter 3 Appendix A Appendix B Appendix C viii YTS US cs esi A A Nea ONCE A essed EVE ME 2 3 AQ Parameter Transfer Words cccccccsccessecessseceesceceseccesseceessececseeceseesesseesesseceseeeesas 2 5 Data Reported to the PLC for Power Monitoring Purposes 2 7 AI Words in 3 Phase Power
30. eforms In a purely resistive circuit the phase angle is equal to Zero indicating that real power is equal to apparent power Programmable Logic Controller The PTM works with a GE Series 90 30 PLC An instrument transformer used for measuring electrical potential voltage Its primary winding connects to the voltage to be measured Its secondary winding produces a stepped down voltage proportional to the primary voltage The secondary voltage is used for the measurement Ratio of real or active power to apparent power in an AC circuit Potential transformer Power Transducer This abbreviation is based upon the group of three letters in the product s catalog number such as IC693PTM100 A circuit having either or both inductive or capacitive effects in which these effects are high in comparison to resistive effects in the circuit The component of apparent power that does not go into producing real work It is generally considered to be lost or wasted power usually dissipated in the form of unwanted heat The component of apparent power that goes into producing real work It is equal to volt amperes multiplied by the power factor It 1s expressed in watts or kilo watts Root mean square Also know as effective value It refers to the value of an alternating current that will give the same heating effect as a corresponding direct current Underwriter s Laboratories The UL mark indicates that a product has passed Underwriter s
31. en an electrical generator and associated power grid Chapter 1 Chapter 2 Chapter 3 Appendix A Appendix B Appendix C PTM Description and Specifications This chapter presents physical details such as dimensions and indicator light information as well as a specifications table Configuration and Data Transfer Discusses configuration operation modes and automatic data transfers via I Q AI AQ memory Installation Contains mounting and wiring instructions and diagrams Ladder Logic Example Example of ladder logic used to send parameter data to the PTM IC693PTM340 341 Interface Cables Data sheet for interface cables Glossary of Terms and Acronyms Definitions of terms and acronyms found in this manual Related Publications GFK 0356P or later version Series 90 30 PLC Installation and Hardware Manual GFK 0467 GFK 1734A Series 90 30 20 Micro PLC CPU Instruction Set Reference Manual Preface vi Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Chapter 1 Chapter 2 GFK 1734A Contents PTM Description and Specifications oooooommossso 1 1 Product OVertVIeW encre hene eee levied on lenient devise eked ed ie edu een 1 1 Features and Applications cccecccecscessseeseeesceesceceecssecnsecnsecesecseeseeeeeeeseseeeeeeaeeaaes 1 1 PTM Product Ordering Information ener 1 2 Difference Between IC693PTM100 and IC693PTM101 ssseeee
32. for all of the phases In addition one of the CTs is optional Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A GFK 1734A L1 L2 L3 N PTs 1A Fuses Va Vb Vc COM Frame Ground la VV Ne mone woe wore tt Ll Ls AE AE CTs LOAD Frame Ground CT Shorting Block Figure 3 6 Connection to 3 Phase 4 Wire system with 3 PTs In Figure 3 6 the connections for a typical 3 phase 4 wire system are shown The PTs are selected to take the nominal line voltage down to the nominal 120VAC that can be processed by the Interface board PTM processing module system Note that the additional scaling for each CT and PT must be applied to all the results given by the PTM through the 90 30 PLC The primaries and secondaries of each potential transformer should be fused for maximum protection A fuse failure is an indication of wiring problems within the system Chapter 3 Installation 3 7 1A Fuses on secondary Va COM Vb Frame Ground CT Shorting Block LOAD Figure 3 7 Configuration for 3 Phase 3 Wire Delta system with 2 PTs The system detailed in Figure 3 7 shows two PTs being used in an open delta configuration connected to the Interface board Note that in this mode selected through the 90 30 configuration parameters the line to line voltage must be scaled down to the level of 120VAC nominal The third voltage and current are reconstructe
33. gy MSW Firmware Version Diagnostic Value 2 6 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A AI Words in 3 Wire Single Phase Power Monitor Mode The data reported to the PLC by the PTM unit running in 3 wire Single Phase 120 240 Power Monitor Mode is detailed in the following table To determine exact memory addresses for these Vo AI words first determine the starting address for the PTM s AI memory this is assigned when the PTM is configured as described in Configuration earlier in this chapter then match the word to the applicable memory location For example if the starting AI address was configured to be AI0016 then the 1st word in the table below would be AI0016 the 2nd word would be AI0017 the 3rd word would be AI0018 etc Table 2 6 6AI Feedback Data from the PTM in Single Phase Power Monitor Mode AI Word Data Sent from Processing Module to PLC in Single Phase Power Monitor Mode AI Word Offset Description Section A Voltage RMS value Ist GFK 1734A Chapter 2 Configuration and Data Transfer 2 9 2 10 Data reported to the PLC for Synchronization Monitoring The units reported depend on the whether the Relative or Absolute Reporting mode is selected See the section Interpretation of Reported Results later in this chapter for details Status Bits RMS value of Phase A Grid Line Voltage RMS value of Phase A Generator Voltage RMS value of Phase
34. he rollover occurs add this scaled value the output of the divide instruction to a separate PLC double integer register then immediately reset set to a value of zero the PTM s AI words 21 24 The reset is done by changing the PTM Operation bit the first Q bit from logic 1 to logic 0 for one PLC scan only you can use a transition coil to accomplish this Note that this action only resets AI words 21 24 The values in the other AI words are retained Since the value obtained from the divide operation is relatively small data would accumulate in the separate PLC register for a relatively long time before rolling over Additional ladder logic could be used to capture a total for a specific period of time such as for a one month period Note that for CPUs models 311 341 that do not support floating point real math instructions the Divide Instruction does not retain a remainder it rounds down to the nearest whole number which means that a fraction of one kWh would be lost from the total The more frequently the reset is performed the greater the impact that this cumulative error would have on the total If greater accuracy with those CPUs is desired a Modulo divide instruction which outputs only the remainder of a divide operation could be used to supplement the Divide instruction CPUs models 350 364 that support floating point math retain the remainder from a division operation so this would not be an issue if using one of
35. hese Parameters and AQ words KK K K k k K k k k k k k k k k k k k k k k k k k k k ckckckckckckck ck ckckck ckckck ck ckckck ck ckck ck ckckck ck k k k ck k k ck k k k ck ckckck ck ckck ck kck ok X Program PTM PLC PROGRAM ENVIRONMENT HIGHEST REFERENCE USED A A A A A A A A EIAEPE EGO INPUT 1 512 INPUT NONE B OUTPUT 0 512 OUTPUT NONE INTERNAL M 1024 INTERNAL NONE GLOBAL DATA G 1280 GLOBAL DATA NONE TEMPORARY T 256 TEMPORARY NONE il REGISTER R 1024 REGISTER R0013 ANALOG INPUT AI 64 ANALOG INPUT NONE ANALOG OUTPUT AQ 32 ANALOG OUTPUT AQ013 PROGRAM SIZE BYTES 224 eK KK A KAKI AKI KARA KAKI ck ckckck ck k k k ck k k k k k k k GFK 1734A A 1 A 2 Program PTM 12 04 98 08 07 GE SERIES 90 3 C PROGRAM LM90 PTM 0 90 20 MICRO v6 0 Power Transducer Module 1 I3 70 Power Transducer for the Series 90 30 PLC User s Manual January 2000 Page 2 kkkkkxkkxkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkxk BLOCK _MAIN BLOCK SIZE BYTES 2 DECLARATIONS ENTRIES HIGHEST REFERENCE USED We i ie e A ee A et es ee te es et en oe a a INPUT 1 NONE OUTPUT Q NONE INTERNAL M NONE GLOBAL DATA G NONE TEMPORARY T NONE REGISTER R R0013 ANALOG INPUT AI NONE ANALOG OUTPUT AQ 2AQ013 k
36. ies 90 30 PLC User s Manual January 2000 GFK 1734A Chapter PTM Description and Specifications 1 Product Overview The Series 90 30 Power Transducer PTM is an intelligent system for measuring electrical power consumption or for monitoring voltages between an electrical generator and the electrical power grid The PTM module is not intended to provide a protective relay function or be used for energy billing purposes The PTM connects to usersupplied current and potential transformers le which furnish the input signals the PTM uses to calculate its data The Processing module which mounts in a Series 9030 PLC transfers the mw F data it gathers to the PLC where it can be used for a wide variety of Mo m purposes The PTM can be used with a wye or delta type three phase EN power system or with a single phase power system The PTM consists of three parts which are all included under one Processing Module catalog number e Processing Module a module that mounts in a Series 9030 ar e A a Rack 3 e Interface Board a panelmounted circuit board This board interfaces between the Processing module and the input transformers current and potential e Interface cable connects the Processing module to the Interface board Interface Board Features and Applications e Uses standard usersupplied current and potential transformers as its input devices e Accurately measures RMS voltage and current power
37. is reported in AI words 23 24 Each of these double integer words contains a running total of power consumed in Watt seconds The average power measured during the last 1 second time period is added to this total every second To calculate the value of energy in kWh units this value must be divided by a constant of 3 6 10 3 600 000 in the PLC ladder program These double integer AI words can accumulate a maximum value of 2 147 483 647 after which they roll over to zero The next table Chapter 2 Configuration and Data Transfer 2 13 2 14 shows the worst case times minimum time for this rollover to occur based upon a continuous power consumption at the maximum values shown in Table 2 8 Table 2 10 Theoretical Worst Case Rollover Times Theoretical Worst Case Rollover Times Mode Non Sinusoidal Sinusoidal Waveform Waveform Absolute Reporting Mode 99 hours 198 hours Relative Reporting Mode 18 hours 36 hours In a practical application the actual rollover times could be considerably longer We recommend you include a rollover time consideration in your design process to ensure that you don t lose any data There are many possible ways to handle the rollover issue The next paragraph discusses one of these Handling Al Word Rollover Divide the value received from the PTM in the AI double integer word register by 3 6 10 3 600 000 to convert the data to kWh as noted above At fixed intervals before t
38. kkkkxkkxkxkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkxk x e x GFK 1734A Program PTM 12 04 98 08 07 t t C PROGRAM LM90 PTM Block MAIN SERIES 90 30 90 20 MICRO v6 01 Page 3 Power Transducer Module START OF LD PROGRAM PTM VARIABLE DECLARATIONS VARIABLE REFERENCE 10001 10002 10003 10004 10005 10006 10007 10008 10009 10010 10011 10012 10013 10014 10015 00001 00002 00003 00004 00005 00006 00007 00008 00009 00010 00011 00012 00013 00014 00015 00016 SR0001 R0002 R0003 R0004 R0005 R0006 R0007 R0008 R0009 R0010 R0011 AI0003 NICKNAME PTM TOG PTM ERR SPARE1 SPARE2 SPARE3 MAX SMP VA MISS PWR INV VAG INV IN INV VAB INV IA INV VBC INV IB INV VCA INV PTM ENA PTM MD MEAS MD PH MODE DI MODE SPARE8 SPARE9 SPARE10 PTAG EN CTN EN PTA EN CTA EN PTB EN CTB EN PTC EN CTC EN OFFSPTM OFF PTM GAINPTM CH1 PTM CH2 PTM CH3 PTM CH4 PTM CH5 PTM CH6 PTM CH7 PTM CH8 PTM DIAGADD VARMS VA DC IARMS GFK 1734A Appendix A Ladder Logic Example DECLARATION TABLE REFERENCE DESCRIPTION PTM Operating Normally Flag PTM Error Flag Spare Spare Spare Samples exceeded MAX value Phase A Voltage missing Phase Powers have different sign Vag 0 valid 1 invalid In O valid 1 invalid
39. n 0 01 Hz units If the Generator frequency is below 30 Hz a zero value is reported If the Line frequency is below 30 Hz all the reported values except the total energy in Power Monitor Mode are reported as zeros For example a reported value of 5947 would equal an actual frequency of 59 47 Hz Phase Shift between Bus Line and Generator Voltage is an integer value directly representing a phase shift in 0 1 degree units For example a reported value of 17 would equal an actual phase shift of 1 7 degrees Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A l Status flags returned by the PTM GFK 1734A The 16 I Status Bits returned to the PLC contain important flags detailed in the following table Table 2 12 l Status Bits from the PTM 1 Status Bits Sent from Processing Module to PLC 1 BIT PTM Operating Normally 2nd Sth Spares not used at this time 6th Input Signal Range 0 valid 1 not valid Phase A Voltage 0 present 1 not present Ig O0 valid 1 not valid 15th Vc 0 valid 1 not valid 16th Ic 0 valid 1 not valid fthe 6th 7th or 8th bits are logic 1 the Fault LED will turn ON 1st Bit PTM Operating Normally This is the Heart Beat bit and it is toggled by the PTM unit every scan This can used by the PLC program to determine if the PTM is operating correctly 6th Bit Input Signal Range If flag bit is set some input
40. power factor frequency energy and total 3 phase 15 minute power Interface Cable demand e Data reporting applications Series 90 30 is a trademark of GE Intelligent Platforms North America GFK 1734A 1 1 e Fault monitoring applications e Generator control features for generator to power grid synchronizing applications e Demand penalty cost reduction load shedding applications e The Processing module mounts in a standard Series 90 30 baseplate slot The matching Interface board is DIN rail mounted It is compatible with standard GE PLC programming software e The generic design of the PTM has one 3 phase voltage input one 1 phase voltage input one 3 phase current input and one single phase neutral current input The module digitizes these inputs and analyzes them to calculate all of the generator synchronization and power monitoring data PTM Product Ordering Information The Processing module and its Interface board are considered to be a matched set and therefore are not sold separately The two PTM cables however may be ordered as separate items There are four catalog numbers in the PTM product line Table 1 1 PTM Catalog Numbers IC693PTM100 Contains the Processing module its matched Interface board and the 19 0 5 meter interface cable IC693PTMI101 Contains the Processing module its matched Interface board and the 39 1 meter interface cable IC693CBL340 19 0 5 meter interface cable
41. r Mode is detailed in the following table To determine exact memory addresses for these Vo AI words first determine the starting address for the PTM s AI memory this is assigned when the PTM is configured as described in Configuration earlier in this chapter then match the word to the applicable memory location For example if the starting AI address was configured to be AI0016 then the 1st word in the table below would be AI0016 the 2nd word would be A10017 the 3rd word would be AI0018 etc Table 2 5 Al Word Feedback Data from the PTM in 3 Phase Power Monitor Mode AI DataSent from Processing Module to PLC in 3 Phase Power Monitor Mode AI Word Description Ist Phase A Voltage RMS value Phase A Voltage DC component Phase A Current RMS value 4th Phase A Active Power Phase A Reactive Power o b Phase B Voltage RMS value Phase B Voltage DC component Phase B Current RMS value 9th Phase B Active Power Phase B Reactive Power Phase C Voltage RMS value Phase C Voltage DC component Phase C Current RMS value Phase C Active Power Phase C Reactive Power Neutral Current RMS value Total 3 Phase Power Factor Line Frequency Sliding average 3 Phase 15 minute Active Power Demand Sliding average 3 Phase 15 minute Reactive Power Demand Total 3 Phase Active Energy LSW Total 3 Phase Active Energy MSW Total 3 Phase Reactive Energy LSW Total 3 Phase Reactive Ener
42. rated from PLC signal wiring in order to reduce noise coupling this can have a bearing on which baseplate slots to choose when mounting Processing modules DO NOT TOUCH the connectors or wiring after powering up the PTM system Hazardous voltages exist and death or injury may result The PTM Interface board frame ground connection must always be installed and must be installed before any other wiring is attached To reduce risk of electric shock always open or disconnect all circuits connected to the PTM Interface board from the power distribution system before installing or servicing current sensing transformers used with the the Interface board 1 4 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Specifications GFK 1734A Table 1 2 Specifications Processing Module Power Requirements Backplane Power Consumption 5V 400mA max from 90 30 backplane Total Power Dissipation 4W max Isolation from Backplane 1500V Measurement Specifications MONITOR Mode 1 x 3 phase voltage PT Impedance gt 200k ohms Range 10 150 VAC RMS 120VAC nominal Frequency 35 70 Hz 1 x 3 phase current CT and neutral current Impedance 50mO Range 0 7 5A RMS 5A nominal Frequency 35 70 Hz SYNCHRO Mode 1 x 3 phase voltage 1 x 1 phase voltage generator grid Impedance gt 200k ohms Range 10 150 VAC RMS 120VAC nominal Frequency 35 70 Hz Phase 18
43. re 1 2 Operating Modes neret etd eer in EP o hen ates 1 2 Power Mointor MOde 2 52 tent eod nt omo nu AES 1 2 Synchro Monitor Mode sse ener 1 3 Processing Module ssssssssssseeseeeseeee eee nnnes 1 3 Interface Boarder e ete bed a re eorr e ined 1 3 Data Reported to the PLC for Power amp General Monitoring Purposes 1 3 Common Functions All configurations esessseseeeeee 1 3 Power Synchronization Functions sess 1 4 Power Monitoring Functions essere enne nnns 1 4 Series 90 30 PEG Compatibility tete tert ene meet etn eests 1 4 SpecIfiCatlOns idet edt t ect Hee Ee p e e ER oe Ie TNT cadence Cds 1 5 Processing Module Power Requirements sse 1 5 Meas rement Specification 1 5 MONITOR Modia ere ette einer 1 5 SYNGHRO Modes iio 1 5 Table 1 2 Continued eeu ee rr e E dee a Cc ERE neki 1 6 Medstirement ACCUracy icc E 1 6 Interface Board Input Terminal Ratings eene 1 6 PT M Me asurement Ranges en rer rete DP tertio qr 1 6 Measurement Data Scaling esses 1 6 Automatic Data Exchange PLC Memory Requirement sesssssss 1 6 Data Exchange Time Between PLC amp PTM sesseeee 1 6 Table 1 2 Contin ed de ttem eee tete 1 7 Operating Environment ssessessesseeeeee eene eene 1 7 Agency Approvals and Listings sssssssseseeee
44. riod e RMS voltage of phase A grid in volts x 10 e RMS voltage of phase A B and C generator in volts x 10 e Phase angle between phase A grid and phase A generator in degrees x 10 e Frequency of phase A grid and phase A generator in Hz x 100 Power Monitoring Functions e Data calculation rate for monitoring functions 20ms 50hz 16 67 ms Y 60Hz e RMS voltages of phase A B and C in volts x 10 e DCcomponent of measured RMS voltages in volts x 10 e RMS currents of phase A B C and Neutral in Amperes x 1000 e Real and reactive power reported per phase and total in Watts Volt Amperes Reactive e Real and reactive total energy consumption in Watt Seconds and Volt Amperes Reactive Seconds updated once per second re settable by the user e Total power factor e Average real and reactive power consumption sliding 15 minute window updated once per second e Line frequency in Hz x 100 Series 90 30 PLC Compatibility The PTM is compatible with all Series 9030 CPUs The Processing module may be installed in any type of Series 9030 baseplate CPU Expansion or Remote There are no restrictions as to the maximum number of Processing modules per PLC system or per PLC baseplate as long as the PLC power supply has sufficient capacity and there is sufficient I Q AI and AQ memory available However as noted in Chapter 3 Installation it is beneficial to keep the Interface module power wiring physically sepa
45. rom the PLC unit consists of 16 Q bits and 2 AQ words The following table shows the structure of the Q bits To determine exact memory locations for these bits determine the starting address for the PTM s Q memory this is assigned when the PTM is configured as described in Configuration earlier in this chapter then match the bit to the applicable memory location For example if the starting Q address was configured to be Q0016 then the 1st bit in the table below would be 0Q0016 the 2nd bit would be Q0017 the 3rd bit would be 0Q0018 etc Table 2 1 Q Command Status Bits sent to PTM Q Discrete Data Sent from Processing Module to the PLC Bit Description Ist PTM Operation 0 Disabled 1 Enabled PTM Mode 0 Power Monitor 1 Synchro Monitor 5 2 Power Monitor Mode 0 Single Mode 1 3 Phase Mode 4th Single Mode 0 3 single phases 1 3 wire single phase 120 240 1 3 Phase Mode 0 WYE 1 DELTA 8 EN CTy Neutral 0 not used 1 used PT 0 not used 1 used CT 0 not used 1 used PT 0 not used 1 used CTs 0 not used 1 used PTc 0 not used 1 used CTc 0 not used 1 used t t 6t 7t t 9t h l Chapter 2 Configuration and Data Transfer 2 3 2 4 Bit1 PTM Operation When enabled the PTM unit performs its measurements It should be disabled just after powering on the PLC until the PTM unit is fully configured or
46. s etc If the Display Mode Q flag bit fifth bit is set to logic 0 the results are reported as relative values If this flag bit is set high the results are reported as absolute values Relative Reporting Mode 2 12 The reported values in this mode must be interpreted as the signed fractional values The maximum positive value of 32767 0x7FFF corresponds to the fractional value of 0 999969482 which can be rounded to 1 0 Similarly the maximum negative value of 32768 0x8000 represents a fractional value of 1 0 A value of 16384 0x4000 represents 0 5 16384 0xC000 represents 0 5 etc The following equation shows the relationships between a 16 bit integer and a fractional value in decimal format The Integer Value is a reported value by the PTM unit Fractional Value Reported Integer Value 32768 The following table contains the reference values required for the interpretation of reported results Also see the section Parameters Common to Both Reporting Modes later in this chapter Table 2 8 Relative Reporting Mode Reference Values Relative Reporting Mode Reference Maximum Values Peak Values REFERENCE VOLTAGE Vrer 200 V REFERENCE 3 PHASE REACTIVE POWER Otrer 6000 VAR REFERENCE 2 SECTION ACTIVE POWER Ptggr REFERENCE 2 SECTION REACTIVE POWER Qtggr 4000 VAR REFERENCE ACTIVE ENERGY EPtger Ptagr sec REFERENCE REACTIVE ENERGY EQtggr Otrer sec REFERENCE TOTAL POWER FACTOR 1 000 Ca
47. should be interpreted as the fractional relative values If this flag bit 1s set to 1 the reported values represent the actual values in Volts Amperes Watts etc Bits9 16 PTn CTn Ifthe flag bit 1s set it indicates that the voltage current is measured and the PTM unit can use it If cleared the variable is not measured and the PTM unit will try to reconstruct this missing variable via sampling from the other measured variables The following explains which variable in which system configuration can be reconstructed Table 2 2 Missing Voltages Currents Reconstruction Dependencies Variable Configuration Neutral Current 3 phase WYE if all phase currents are measured Neutral Current 3 WIRE single phase system if both section currents are measured Phase Current Voltage 3 phase balanced WYE system if other two phase variables are measured Phase Current Voltage 3 phase balanced unbalanced DELTA system if other two phase variables are measured Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A AQ Parameter Transfer Words The two AQ words are intended for parameter transfer from the PLC to the PTM The Parameter Number word identifies which Parameter number listed in the Parameters table below is to be sent to the PTM The following table shows the structure of the AQ words To determine exact memory locations for these words determine the starting address for the PTM s AQ memory this is a
48. ssigned when the PTM is configured as described in Configuration earlier in this chapter then match the word to the applicable memory location For example if the starting AQ address was configured to be AQ0016 then the 1st word in the table below would be AQ0016 and the 2nd word would be AQ0017 Table 2 3 AQ Parameter Number Value sent to PTM AQ Word Data Sent From Processing Module to PLC AQ Word Description 1st Parameter Number Parameter Value The parameter values and their parameter numbers are detailed in Table 2 4 The Parameters 1 to 10 must be sent to the PTM after the PLC powers up in order to establish essential PTM operating values Since only one parameter can be sent per PLC scan the entire set of 11 parameters requires 11 scans GFK 1734A Chapter 2 Configuration and Data Transfer 2 5 Table 2 4 Parameter Numbers Sent to PTM via Second AQ Word Parameters Parameter Number Description PTM Offset 1 A ESE p p Word1 PTM Offset The value found on the PTM label Should not be modified Word2 PTM Gain The value found on the PTM label Should not be modified Words 3 10 Channel n Gain The value found on the label of the PTM Interface Module If necessary it can be modified Valid range is between 32768 and 32767 A value of 32768 0x8000 corresponds to the gain of 2 a value of 216384 0xC000 corresponds to the gain of 1 A v
49. stings e CE Mark e CISPR I1 e UL CUL e ANSIC37 90A 1989 Power Measurement Configurations e 3 phase WYE e 3 phase delta e 3 independent phases e 120 240 3 wire connection Protection Feature Watchdog circuitry continuously checks that the PTM is following its normal pattern of operation Chapter 1 PTM Description and Specifications 1 7 Figures and Dimensions Dimensions shown in inches with mm in parentheses Processing Module 5 4 136mm m uc be ABO La A ml 35 6mm 136mm Figure 1 1 Series 90 30 PTM Processing Module Interface Board 15 4 17 5mm Figure 1 2 PTM Interface Circuit Board 1 8 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A 1C693CBL340 341 Cables The PTM cables come in two sizes e C693CBL340 is 19 inches 0 5 meter long e C693CBL2341 is 39 inches 1 meter long FEMALE Figure 1 3 1C693CBL340 341 PTM Cables Processing Module s LED Indicators R Running This Green LED indicates e ON Backplane power present and module functioning OK e FLASHING module failure e OFF Backplane power missing or module defective F Fault This red LED when OFF indicates that there are no interface faults When ON either steady or flashing it indicates that one or more of the three possible faults listed below is present each of these faults has a corresponding l bit see Ch
50. tched Interface board and the 39 1 meter interface cable e C693CBL340 The 19 0 5 meter interface cable e 1C693CBL341 The 39 1 meter interface cable B 2 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Checking the IC693CBL340 341 Cables The following information is supplied for the purpose of troubleshooting only making continuity checks of the cable These cables have straight through connections pin 1 connects to pin 1 pin 2 connects to pin 2 etc although some pins have no connections One end is connected to a male all plastic DB25 connector The other end 1s connected to a female all plastic DB25 connector The cable is a twistedpair type connected to minimize noise and crosstalk between signals These cables connect to a circuit board that has hazardous voltages present These cables are carefully made to ensure the safety of the user and associated equipment Therefore we recommend you use only factory built cables Connector Pin Number Either End Signal Name and Function 1 VG Voltage Generator positive lead 2 IN Current Neutral positive lead 3 VA Voltage phase A positive lead 4 IA Current phase A positive lead 5 No Connection 6 VB Voltage phase B positive lead 7 IB Current phase B positive lead 8 VC Voltage phase C positive lead 9 IC Current phase C positive lead 10 Cable shiel
51. the accuracy completeness sufficiency or usefulness of the information contained herein No warranties of merchantability or fitness for purpose shall apply indicates a trademark of GE Intelligent Platforms Inc and or its affiliates All other trademarks are the property of their respective owners Copyright 2009 GE Intelligent Platforms Inc All Rights Reserved Contact Information If you purchased this product through an Authorized Channel Partner please contact the seller directly General Contact Information Online technical support and http www ge ip com support GlobalCare Additional information http www ge ip com Solution Provider solutionprovider ip ge com Technical Support If you have technical problems that cannot be resolved with the information in this guide please contact us by telephone or email or on the web at www ge ip com support Americas 1 780 420 2010 if toll free 800 option is unavailable Technical Support Email support ip ge com Europe the Middle East and Africa 352 26 722 780 if toll free 800 option is unavailable or if dialing from a mobile telephone Asia Pacific support jp ip 2 ge com ini i 21 3217 4826 su cn i i customercare cn ip ge com China Preface Content of This Manual This manual describes the Series 90 30 Power Transducer PTM an intelligent system for measuring electrical power consumption or for monitoring voltages betwe
52. the first Q bit is turned off Disabled Total Power Factor Al Word 17 Total Power Factor is a fractional value expressed as an integer A positive power factor represents power consumed and a negative power factor indicates power generated Values closer to zero represent poorer power factors values closer to one represent better power factors A value of one is the ideal power factor Power factor is often expressed as a percentage with a power factor of one being equal to 100 percent The reported value ranges from 1000 to 1000 The actual value range is 1 000 to 1 000 For example a reported value of 874 would equal an actual power factor of 0 874 87 4 a reported value of 1000 would equal an actual power factor of 1 000 100 0 GFK 1734A Chapter 2 Configuration and Data Transfer 2 15 Parameters Common to Both Reporting Modes 2 16 In either Relative or Absolute modes the reported values in the table below represent actual values of the measured physical variables Since the units reported are integer values decimal values are not supported the Units column in the following table shows what a reported value of one 1 represents Table 2 11 Parameters Common to Relative and Absolute Modes Relative and Absolute Reporting Mode Units Units LINE GENERATOR FREQUENCY 2 01 Hz PHASE SHIFT 0 1 degree Line Generator Frequency is an integer value directly representing the frequency i
53. them Maintaining Your Data Memory in the PTM module is volatile However the AI words used to transfer data from the PTM are battery backed RAM memory unless you are using a battery less scheme To avoid loss of data it is important to ensure that the backup battery is in good condition The life of an installed backup battery 1s approximately one year shelf life is five years Note that if the PLC is powered down the data stored in the PTM will be reset to zero When power is restored you should have a way of dealing with this For example you probably wouldn t want to write the zero value from the PTM into the register that was accumulating the Total Energy value So you would need some ladder logic to sense this and capture your total in a separate register For general information on protecting Series 90 30 PLC data refer to Chapter 6 Memory Backup and Backup Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Battery in the Series 90 30 PLC Installation and Hardware Manual GFK 0356P or later version Sliding Average 3 Phase 15 Minute Power Demand Al Words 19 and 20 Vo AI word 19 is for Active power and AI word 20 is for Reactive power These two AI words maintain a sliding 15 minute average power consumption value This value is useful for utilizing load shedding to minimize the cost of demand usage charged by your electric utility This value is maintained even if the PTM s Operation bit
54. urement options are selected using Q and AQ memory data transfers from the PLC ladder program GFK 1734A Power Monitor Mode Measurement Modes e 3Single Phase Systems 1 PT amp 1 CT for each phase e 3WIRE Single Phase System 120 240 2 PTs amp 2 CTs e 4WIRE WYE e 3PTs 3 CTs plus Neutral CT optional e 2PTs 2 CTs for balanced loads e 3 WIRE DELTA 2 PTs 2 CTs Synchro Monitor Mode Measurement Mode one basic mode only e Three generator PTs two optional and one grid voltage PT Parameter Data The Gain and Offset parameters for the PTM Processing module are specified on the Processing module label located on the side of the module In addition there are eight channel gains specified for the PTM Interface module The user programs these ten values in the appropriate PLC memory locations so it can in turn send them to the PTM An example program showing how to do this is contained in Appendix A The constants are typed into specific R registers and the PLC program sends them sequentially to the PTM via the two AQ registers configured for the PTM PLC PTM Communication Protocol Data is exchanged between the PLC and the PTM modules with every PLC scan and they are organized in 16 lI bits 25 AI registers 16 Q bits and 2 AQ registers 2 2 Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A Data required from PLC Q Bits GFK 1734A The configuration data received f
55. ut aluminum wiring can be used if necessary To use aluminum wire the wire must be stripped burnished then immediately dipped into a non acid and non alkali material such as neutral Vaseline before connection Connections should be torqued to 0 5 to 0 6 Nm 7 3 to 8 8 ft lb Note that the Interface board s voltage common terminal is allowed to differ from ground potential up to 90VAC or 130V peak When the module is used to measure a 3 Phase Delta system or several independent systems potential transformers must be used for voltage isolation and scaling purposes When connecting the Interface board directly between a branch circuit and a small load the over current rating of the branch circuit must be 15 Amps or less Please refer to the diagrams following 3 1 3 2 ES PTMPM 90 30 PLC Connection Cable PTMIM Frame Ground To User PTs with fuses and CTs with shorting bars Figure 3 1 Basic system configuration Mounting Location It is recommended that Processing module s be mounted in a slot at or near the end of the PLC and that the Interface board be mounted to the panel to the side of the PLC the Interface board mounts on a standard 35 mm DINgsail This will keep the power wiring to the Interface board physically separated from PLC signal wiring thus reducing the opportunity for noise coupling Series 90 30 PLC y Processing Module 1C693CBL340 341 PTM Cable
56. ution Applying higher voltages than 150 V RMS or higher currents than 7 A RMS to the PTM Interface board could lead to erroneous results accompanied by appropriate fault status bit Input Signal Range set to 1 and the red LED flashing or steady on Power Transducer for the Series 90 30 PLC User s Manual January 2000 GFK 1734A The actual value of Voltage Current Power and Energy is calculated as Actual Value Fractional Value Reference Value or in one combined equation Actual Value Reported Integer Value 32768 Reference Value Absolute Reporting Mode In this mode all the reported Voltages Currents Powers etc represent actual values of the measured physical variables Since the units reported are integer values decimal values are not supported the Units column in the following table shows what a reported value of one 1 represents Also see the section Parameters Common to Both Reporting Modes later in this chapter Table 2 9 Absolute Reporting Units Absolute Reporting Mode Units VOLTAGE V CURRENT I 170 001 A Phase nit Power e The Phase n Active Power has a positive sign for consumed power and a negative sign for generated power e The Phase n Reactive Power has a positive sign for capacitive loads and a negative sign for inductive loads Active and Reactive Total Energy Al Words 21 24 GFK 1734A Total Active Energy is reported in AI Words 21 22 and Total Reactive Energy
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