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1. 49 239 Motor Protection Relay M 59 erret r terere eere ete te tenerent 49 269 Motor Management Relay 989 eee esie eee eeeene tense tetuer tn ron nene tnn entorno sn nasere toes 49 565 Feeder Management Relay BEE 50 135 Feeder Relay ooo ae 90 MX200 Microprocefsor GgntToller rennes 51 Generator PLG Serm SIE UR 51 Electronic Power Meller EPM 7330 i nk 51 ElectrganiMgwBa ter EPM 37 10 s scssccsscssessscssesssssssssssessssssssseossssssesessessssesseseeassesssneasassneseasssensanssaeneenes 52 EleglfonicPowWyMeter EPM 3720 rss co recrean 53 El Eet deif ZE d ORK UU 53 Electroniic Power Meter EPM 7500 7600 7700 mu 53 e aciei o PI m een 54 GE udis UN Eee 54 GE Fanuc PLC Micro OO E een 54 EPM 5000P 5200P 5300P 93350P une oa 54 MicroVersaTrip C and D and Spectra MicroVersaTrip Trip Units sse 55 Jue Ede zipper nn and nn annees 55 ii Power Management Control System Table of Contents Electronic Power Meter PLEPM c ccccccsscscscsssscscscsssssscsssssssscecscssssssseseusssssevsssscesesssessesevassecsceseseeeeeesevenseses 55 POWER LEADER Ethernet Gateway aia 56 POWER LEADER Junction Outlet Box singer 56 POWER LEADER MDP Overcurrent Relay ss duree 56 POWER LEADER Meter ma 56 POWER LEADER Modbus Monitor sde ase 57 POWER LEADER Repeater aa e E ds 57 Power Quality Meter POM En ei
2. esee eeeeee nennen trennen tette tnnt 21 2 8 Addressing the IEDS uei o ae 21 2 9 Multiple RS 485 Networks Addressing sn 25 2 10 System EX pansion cd not ita an 25 22 1 Case D 25 CASE Study ONE ec C 25 Base TWO 2 Power Management Control System Table of Contents CASE UA lf RS 29 Case FUE na DIEM RE 30 PII eM ETT 33 Chapter 3 Network Wiring and Construction Ma Ad 37 3 1 Wiring Requirements s en 38 NS E AAA 39 A Ww 39 Shield Grounding WEE Zee 39 3 2 Modbus Commnet Integration Q f corno loco su 39 Wiring Contest ein 39 3 3 Modbus Ethernet Integration cate Nee 41 3 4 Local Configuration of IEDs e A NI 41 3 5 Applying Power to the System dunes 41 3 6 Software Loading and Startup seds carro re nnne nnnm ntes tns 41 Chapter 4 Trouble Shooting Meee Ts 42 4 1 Communication Network Trouble Shooting 6 29 559 sin 42 4 2 Host Trouble Shooting over Rennen nnn 43 4 3 ED Trouble ShootinG sinister o Re 43 4 4 Equipment Trouble Shooting pw sense 43 4 5 Product Service Procedure nent 43 4 6 Trouble Shooting Guide 8 E 44 DVENIEW PME Wr
3. 9600 baud Multiin 565 Feeder Management Relay at main power feed Network 2 2400 baud Multiin 269 Terminating we Resistor Machining Area 4 Assembly EPM 3720 Line Area PLC 90 30 Programmable Logic C ontroller RS485repeater Facility Three POWER LEADER Repeater POWER LEADER Long range commnet cable run Met aed 5000 feet Long range RS485 cable run 3500 feet Bill now turns to his floor layout to see just where the wiring could be run and how much distance it must cover He maps where his IEDs must be located and Where the host PC will sit He then measures thefable runs required to connect the IEDs to the host PC keeping in mind that the RS485 rules require him to daisy ehain the Modbus IEDs one after another from thesEthernet Gateway and the commnet IEDs four per segment from the Modbus Concentrator His floor layout is Shown in Figure 26 The RS485 cabling is less than 4000 feet for each of the RS485 networks except fOmsNetwork 3 where RS485 repeaters are used to bridge the 3 500 feet to Facility Two Each of the commnet segments requires less than 1000 feet of cable except for segment three where POWER LEADER Repeaters are used to span the 5000 feet to Facility Three hewiring rules are satisfied Bill seleets Modbus addresses for the Modbus IEDs and Modbus equivalent addresses for the commnet IEDs using the worksheets in the back of the Modbus Concentrator User Guide G
4. Terminating Resistors GHO Corp Machine Shop network witing diagram Figure 25 Floor layout for Case Three Next Bill checks Table 2 for the Modbus wiring rules and Table 3 for the Ethernet wiring rules He notes that he must properly terminate the RS 485 network at each end and that he must keep his total RS 485 cable length under 4000 feet unless he invests in RS 485 repeaters or puts the IEDs on separate RS 485 networks which may run in different directions and effectively increase his range His cabling limits are satisfied so Bill selects Modbus addresses for the IEDs and records them for future reference His address chart is shown in Table 10 29 Power Management Control System Chapter 2 Network Design e RS 485 Port Physical Location Power Intake Area IED Type Multilin 565 1 01 Multilin 269 PLC 90 30 3 01 EPM 3790 Multilin SR745 Multilin SR469 uM Table 10 IED Addresses for Case Three Iathe Area 4 01 Milling Bill next checks Chapter 5 for physical wiring requirements and rules He finds that he ll have to use Belden 3074F cable for the RS485 wiring He also locates the correct terminating resistors at each end of the RS 485 network He installs the IEDs according to the instructions in each user manual He makes communication connections to the RS 485 communication cable in daisy chain fashion one IED to the next with terminating resistors a
5. Example C illustrates a pair of Monit rs connected to a single Modbus segment In this example the Monitors may be either single porter dual port versions provided both are the same v rsion See note below Example D shows the same paix of Monitors wired to a second Modbus segment CAUTION With regard to Example C two Monitors oma single RS485 segment it is not pefmissible to mix different models of Monitors on a segment Monitors 1 and 2 must be of the same model either both single port or both dual port The nature of the other network architectures 18 Power Management Control System 2 6 Commnet Wiring Rules Diagrams POWER LEADER commnet IEDs may be integrated into PMCS through the use of the POWER LEADER Modbus Concentrator which collects data from commnet IEDs and communicates that data across the RS485 network Each Modbus Concentrator supports up to eight commnet segments Each commnet segment may accommodate up to four commnet IEDs The following are the basic rules to ensure proper network operation for POWER LEADER commnet IEDs Note that these rules apply only to individual commnet segments of a POWER LEADER Modbus Concentrator not to the RS 485 network l Each Modbus Concentrator supports up to eight commnet segments Each commnet segment may support up to four commnet IEDs only one of which may be a waveform capturing meter POWER LEADER Repeaters and Junction Outlet Boxes are not counted
6. Figure 8 Network illustrating Modbus Rule 3 4 Each RS 485 network must be properly terminated at both ends of the cable run after the final IED See Section 3 1 for details on termination Figure 9 illustrates this rule ower Management Control System hapter 2 Network Design 5 Each RS485 network must have its shield properly grounded Figure 9 illustrates proper RS485 wiring and grounding To ensure proper grounding follow this procedure Begin by grounding the RS485 cable shield at the host Follow the cable to the first IED on the network Do NOT connect the cable ground to the IED Pick up the RS485 output cable from the IED and attach its ground to the IED s shield connection or grounding screw For IEDs with no grounding connectors connect to earth ground ground loop condition and cause communications failures Make sure you follow the wiring diagram carefully Follow the cable to the next IED and repeat the above procedure Do not connect the RS485 shield from the previous IED but DO connect the RS485 OUT shield on its way to the next IED Rules of thumb RS485 cable ground should always be connected at the previous IED n ver upon arrival at an IED All RS485 IEDs muste ye either two communications cables attached or one communications cable and a terminating resistor EXCEPTION The Multilin 565 Feeder Management Relay does not have isolated communications ports Do NOT connect the
7. Sequential tripping logic Breaker failure detection Overspeed VT fuse failure detection Trip coil supervision Four analog outputs four analog inputs Seven digital inputs 12 RTD inputs Metering and Monitoring Metering A V W var VA Wh varh PF Hz Demand values A Wvar VA Event record last 40 events Waveform capture 16 cycles Power Management Control System Appendix A IED Descriptions User Interface e 40 character display and keypad e One RS232 port two RS485 ports SR745 Transformer Management Relay The SRTAS isa high speed multiprocessor based three phase two or three winding Transformer Management Relay intended for primary protection and management of small medium and large power transformers The SR745 combines percent differential overcurrent frequency and overexcitation protection elements along with monitoring of individual harmonics and THD in one economical package The SR745 provides a variety of adaptive relaying features Adaptive harmonic restraint addresses the problem of false tripping during inrush Adaptive time overcurrent elements adjust their pickup settings based n the calculated transformer capability when supplying load currents with high harmonic content Multiple setpoint groups allow you to enter and dynamically select from as many as four groups of relay settings to address the protection requirements of different power system configuration
8. e DB9 connections to the POWER LEADER Ethernet Gateway with 90 30 and 90 70 PLCs To wire the Cominunications Coprocessor module of a PLC 90 30 or PLC 90 70 to an RS485 network you will need two 100 inch lengths of Belden 9271 cable covered with sleeving and a male DB 25 connector The DB 25 connector should have the following jumper connections made inside the connector e Pin9toPin 13 e Pin2l to Pin 25 e Dm 22 to Pin 23 e Pin 10to Pin ll Connect the two cables to the DB 25 connector as follows __ Conductor_ DB 25 Pin Cable 1 Bue 9 Ne shia I poy Bue ez Ts SI Apply heat shrink tape omjacket over the connector for protection At the end opposite the connector strip about 3 inches off the outer jacket of each cable Label one cable RS485 IN and the other cable RS485 OUT Micro 90 PLC NOTE Micro 90 PLCs withfirmware revisions V3 1G sad higher support 2 wire Modbus connection directly eo the conversion from 4 wire to 2 wire iSsonlmmeecdec viti earlier versions To wire the communications port ofaPLC Micro 96 ic an RS485 network you will need two 100 inch lenztis of Belden 9271 cable covered With sleeving and a L amp D Electronics 485FWTW or equivalent two to fous cre converter a female DB 25 connector and a male 127 15 connector The DB 15 connecton should have the following rte connections made imside the connector e Pin 6to Pin 15 e Pin dto Pin 14 Connec
9. re 26 Floor layout for Case FOU un eu 31 Figure Z7 Floor layout TOR Case Fe sce ee 33 Figure 28 Commnet shield grounding wired correctly 21 sise 40 Figure 29 Incorrect wiring Looping on one Modbus Concentrator commnet port eere eren 40 Figure 30 Incorrect wiring Looping to two Modbus Concentrator commnet ports 40 Figure 31 Incorrect wiring Looping on segment Connected to Junction Box ss 40 Figure 32 Incorrect wiring Looping orf segment connected to POWER LEADER Repeater ss 40 Tables Table 1 EDs supported Dy PIV Af Jio e Uta aan 8 Table ZOCO dd a 10 Table 3 MEET wiren Tu E 12 Table 4 Commnet e e rules usines 14 Table 5 Modbus addressirange appropriate usage E M oan dtu tarda eer icd E 22 Table 6 Modbus to commnet address mapping sn 22 Table 7 1ED addressing scheme for Figure eet 24 Tabled IED Addresse ftor Case ONE diae dai ia 26 Table 9 JED FRreSSeS e Case prio 28 Table 10 mDWallresses Tor base Three Rs d den Das An nes 30 In Du ell for Case FOUR 32 Table m ED Addresses for Case Fe ssec ceat ee AS 34 HS wes STD Be DIS uri ee 30 iv List of Fiqures and Table Power Management Control S Power Management Control System Welcome to PMCS Hello and welcome to POWER LEADER Power Management Control System PMCS You are about to begin using your computer in an exciting new way as a tool to help
10. 57 RS 185 Repeater ea etu van bass a AA 58 Spectra Electronic Control Module ECM M reme nn 58 SR469 Motor Management Relay ll Mn 58 SR489 Generator Management Relay 9 Mes eren nn 59 SR745 Transformer Management Relay M paese Mines 60 SR750 Feeder Management Relay ffi nr 60 SR760 Feeder Management Relay Muere nennen nnn tnnt nnt tn tnnt nnns 61 Motor Manager I MM E 61 90 30 and 90 70 PLE maintes 66 Micro PLE nl 66 Connect EEN ei 67 Ethernet Gateway osos ae 67 Appendix A IED Descriptions Appendix B Reference Documents Appendix C Special Wiring Considerations iii Power Management Control System List of Figures and Tables Figures Figure T Modbus only SU ON ssh rato Sees o diti Aida 3 Figure 2 Commercial Ethernet and Modbus network seeds 3 Figure 3 Modbus and commnet network rss re celeres 4 Figure 4 Ethernet Modbus and commnet network sine 4 Figure 5 Ethernet based host services Ethernet Modbus and commnet networks eere 4 Figure 6 Example of remote operation using modems mnt Miss 6 Figure 7 Network illustrating Modbus Rules 1 and 2 rennes 15 Figure 8 Network illustrating Modbus Rule 3 ss perse 15 Figure 9 Network illustrating Modbus Rules 4 and 5 rennes 16 Figure 10
11. SAR div z ua vdd us vilem Kollaga Hole Cantina Canter Kbxap Ul Figure 21 Sample network with IED addresses Power Management Control System Chapter 2 Network Design EPM 7700 Electronic Power Meter Lineup 2 Multilin 269 Plus Motor Relay 8000 Line Motor Control Center Modbus Concentrator 2 Segment 1 Spectra Electronic Control Module Segment 2 Spectra ElectfOnic Control Module Segment 3 Spectra Electronic Control Module Segment 4 Spectra El etronie Control Module EPM 7700 Electroni Power Meter using IP address 3 46 9 102 Lineup 3 Modbus Concentrator 3 AKD 8 Low Voltage Switchgear Segment 1 POWER LEADER Meter Segment 2 Enhanced MicroVersaTrip trip unit Segment 3 POWER LEADER Meter Segment 4 Enhanced MicroVersaTrip trip unit Attached Modbus Commnet Equipment IEDs Address Address Lineup 1 Modbus Concentrator 1 001 POWER V AC Medium Voltage Segment 1 Switchgear POWER LEADER Electronic Power Meter 035 302 MDP Overcurrent Relay with commnet 036 303 MDP Overcurrent Relay with commnet 037 304 MDP Overcurrent Relay with commnet 038 305 Segment 2 POWER LEADER Electronic Power Meter 040 307 POWER LEADER Electronic Power Meter 041 308 Segment 3 POWER LEADER Electronic Power Meter 045 312 POWER LEADER Electronic Power Meter 046 313 Segment 4 MDP Overcurrent Relay with commn t 317 MDP Overcurrent Relay with commnet on 318 Lineup 4 GE Rantic Programmable Logic Controlle
12. System e Trip record of last five trips e Pre trip data includes currents e True RMS sensing e Monitor currents output relays status settings User Interface e Fight LED trip indicators Four LED status indicators e Current bar graph percent of CT rating e RS485 communications e Modbus RTU protocol M e Baud rate up to 19 200 e Software for setup and simulation Features e lamp or 5amp CT input e 20 260 V ac dc control power e Drawout case e Switchgear door or I inch rack mount MX200 Microprocessor Controller GE Zenith Controls MX200 advanced microprocessor DI 5 remote annunciators controller is designed for the most demanding transfer or bypass switch applications It may be specified with standard options or programmed to use any or ablofthe most commonly used options for today s transfer switch operation It also may be equipped with our ZNEL200 communication interface for se with modems or PG control The MX200 manages switch operation Via a convenient touchpad that provides indication setting and diagnostic capabilities As anj embedded digital controller the device offers higlwreltability and ease of unattended operation across fa range of applications The GE Zenith MX200 Microprocessor offers the following featur s e Multipurpose display LEDs for continuous monitoring of switch position and source availability a four line by 20 charac
13. When the Gateway receives a message from the Ethernet or Modbus network iftranslates the message protocol and forwards the message to the correct destination The Ethermet Gateway converts messages from the Modbus R L protocolte Ethernet s TCP IP protocol and vice versa directly No interpretation or concentration of IED datais performed by the Gateway The Ethernet Gateway s major functions are e Relay data from Modbus network s to the PMGS host on the Ethernet network e Deliver messages and commands from the host to thevattaehed Modbus and commnet IEDs 56 POWER LEADER Junction Outlet Box The POWER LEADER Junction Outlet Box allows the interconnection of as many as four commnet cables to create system nodes on a commnet segmentgattachec to the Modbus Concentrator This istusefuPto economize the wiring on a given commnet segment POWER LEADER MDP OvereurrentRelay The MDP Overcurrent Rel y is a Microprocessor based non directional overcurrent relay that protects circuits from phase to phase and phase to ground faults Included with theZMDP Overcurrent Relay are four measuring units Cone for each of the three phase currents and One for ground or residual current Each of the four measuring units includes a time and an instantaneous overcurrent unit Features include e Invetsepovercurrent including four character istic curves and four values of definite time protection and instantaneous overcurrent prc
14. any data in the event of a power outage however communications will be interrupted until power is restored Should control power to a Modbus Concentrator be lost PMCS will be unable to communicate with any commnet IEDs downstream from the Concentrator until power is restored No data will be lost but communications will be interrupted The same is true of the Ethernet Gateway as the linchpin connecting the host to the network of IEDs if a Gateway loses control power the host will be unable to communicate with any IEDs attached to the Gateway until power is restored You can avoid this situation by providing uninterruptable power supplies UPS to the host computer and by providing secure control power to the IEDs either with UPS systems or battery backups different IEDs have different requirements Refer to individual user guides for information on control power requirements Power Management Control System Chapter 1 Introduction 1 6 Time amp Date Stamping PMGS stamps each event with a time and date code for precise reference The time and date are set by the DDE Server and passed across the network to each IED so that all IEDs are synchronized Additionally some PMCS IEDs support IRIG time synchronization If IRIG is used in a PMCS system it is recommended that the host PC be IRIG time synched as well to maintain synchronization between the IEDs and the PMCS DDE Server 1 7 Remote System Operation PMCS a
15. at both ends ofeach RS485 network He installs the IEDs according to the instructions in the user manual for each IED He then makes connections to the RS485 communications cable in daisy chain fashion one IED to the next terminated at each end of each R amp 485 network doublechecking his wiring against the example provided in Section 2 4 He must also bear in mind proper shield grounding considerations each RS485 IED grounded at only one 26 SEN PUR Ado ND AE aten md 9 roa Power Management Control System Chapter 2 Network Design point and no two IEDs grounds connected Rule 4 Section 2 4 Bill assigns a Modbus address to each IED He then sets communication speeds and functional and protective parameters according to the instructions in each user manual Dil installs the PMCS software at the host PC and configures IED addresses at the host to match the addresses assigned to each on the network When all connections have been made and the IEDs and software are appropriately configured Bill applies power to the system and runs tests to assure that everything is functioning properly If any difficulties are encountered Bill refers to the trouble shooting guide in Chapter 4 Case Two Case Two begins where Case One left off The Modbus network is in place and GHO Corp has been so pleased with their new PMCS system that they now wish to tie in a second building Facility Two and add several a
16. dual RS485 rear e Modbus RTU protocol e Mini RTU digital four in four out e Analog one in four out e Local remote display of all values Maintenance e Harmonic analysis through 62nd harmonic with THD and TIF Power Management Control System Appendix A IED Descriptions e Event recorder e Waveform capture e Data jogger RS 485 5 Raster Repeaters extend the range of an RS 485 network The following commercially available RS 485 repeater is recommended for use with the PMCS in accordance with the configuration rules explained in Chapter 2 Manufacturer Description OPTO22 AC38 RS 485 Isolated Multidrop Repeater 369 Motor Management Relay The 360 is a digital relay that provides protection and monitoring for three phase motors and their associated mechanical systems A unique feature of the 369 is its ability to learn individual motor parameters and to adapt itself to each application Values such as motor inrush current cooling rates and acceleration time may be used to Ee the 369 s protective capabilities pre 360 offers the following features AC DC control power Flash memory Simulation mode for field testing Trip Alarm Aux Aux2 Relay Outputs e Optional split mounting e Optionalremote RTD module Spectra Electronic Control Module ECM The Spectra RMS Electronic GontroMModule ECM is a microprocessor based IED that functions as an adjustable overload relay toprotec
17. e Undervoltage e Power Factor e Undercurrent e Thermal Capacity 565 Feeder Management Relay The 565 feeder management relay is designed to provide complete and accurate feeder protection providing the following functions functions with an asterisk require the optional Meter Transducer Module Metering e RMS phase and ground current e Phase volts e Peak amps demand e Frequency Power factor e kW kVAR kWHr e Peak kW KVAR demand Protection and alarm e Phaseand ground overcurrerit e Current unbalance e Overvoltage e Undervoltage e Powerfactor e Under Overfrequency e Peak Amps KW 7kVAB demand e Undercurrent e Thermal capacity 135 Feeder Relay The 735 amp 2Microprocessor based relay for primary circuit protection on distribution networks at any voltage level Protection features include three phase 50 ee a timed overcurrent phase instantaneous overcurrent ground timed overcurrent and ground instantaneous overcurrent Each protection element can be selectively enabled with the front panel dial setting Flexible settings and selectable curve shapes ena accurate coordination with other IEDs Installer and maintenance costs are lower when the SR73 ic used instead of the eight separate overeurren vrociection IEDs it can replace The SR735 has three output eontacts trip auxiliary trip and service required Phe auxiliary trip 1 7 be set to follow the main trip relay act as an 86 Loc t
18. est blished check that the communication settings fom the RS485 network match those set at thefIED and that the Modbus address at the IED matches the address assigned at the host Reattemptcommu ications Communication with an IED connected to an RS 485 network requires that it have a Modbus address Addresses are assigned during IED setup After the IED address has been assigned it must be entered into the host computer Commnet IEDs must be assigned Modbus equivalent addresses at the Modbus Concentrators and commnet addresses at the IPD Refer to each IED s instruction manual for detailed procedures When the address is entered at the host the host will attempt to communicate with the IED If communication can be established with 42 some IEDs continue with step 5 otherwise go to step 6 Establish a pattern for the IEDs that do not respond Are all the IEDs with problems Modbus IEDs Ar they all commnet IEDs Are theyalf on one R425 network or a single commnet segment or are they located on different networks or segments Do all the IEDs on a segmentvup tO a certain point communicate while IEDStaftenthat point do not If communication cannet be established with any cf the IEDs on a network go to step 7 If the error is limited to certain IEDs the following checklist sho ld help you isolate the problem e The ED is powered up e The TED s communication settings match those of the network it is on baud ra
19. for th commnet wiring rules and finds Bill next checks Chapter 3 for physical wiring that he must keep Wis POWER LEADER Meters on requirements and rules He knows he needs Belden 3074F separate commnet networks limit his commnet IEDs to cable for the new RS 485 wiring Io extend RS 485 Network four per segment and keep each segment under 1000 feet 9 to the RS 485 repeater for the jump to Facility Two and unless he uses repeaters The commnet segments he has tO make the connection to the Modbus Concentrator from planned satisfy all these rules the RS485 repeater in Facility Two He moves the terminating resistor from the end of RS 485 Network 3 out to the new end at the Modbus Concentrator in Facility Two Because Misacabling limits are met Bill selects Modbus equivalent addresses for the IEDs and adds them to his address chart for future reference His updated address chafttisshown in Table 9 28 Power Management Control System Commnet wiring requires Belden 8719 cable Bill installs the IEDs according to the instructions in each user manual He wires each commnet segment in daisy chain fashion one IED to the next being sure to ground the shield at the Modbus Concentrator only Bill then sets local addresses on the IEDs in accordance with the addressing rules in Section 2 6 He sets communication speeds and parameters according to the instructions in each user manual Bill installs the PMCS software at the host PC and configur
20. of Ethernet physical media that must be specified when ordering the meter lOBase T or lOBase FI EPM 94500 and EPM 96500 must be ordered with 10 Base T Ethernet Option The meters operate in a 10 Mbps system 10Base T is specified when twisted pair is used and 10Base FL is specified where fiber optic cable is used While media converters are available to allow the use of both twisted pair and fiber optic cable in the same LAN and can be used to extend the length of the LAN they are beyond the scope of this discussion CAUTION The recommended installation practice is to implement optical fiber for connections between buildings to provide electrical isolation This eliminates harmful ground loops caused by differences in the ground potential between structures CAUTION Data line surge protection is recommended for network components such as hubs computers or modems connected4o TEDs with copper wire especially installations where the data communication cable is exposedy i e not encased in conduit or runs parallelto power conductors PMCS IEDs are routinelysinstalled in areas exposed to heavy electromagnetic fields EMF which can induce damaging s rges in data communication lines Data line surge protection is not required Tor ber optic connections 10Base T specifications and rules lOBase T Ethernet uses CAT 3 4 Or 5 twisted pair cable depending on the installati n Maximum Minimtm length of segments For a lOB
21. on segmsni 17 Y Mr connected to Junction Box POWER LEADER el Modbus Concentrator e To Modbus Concentator POWER LEADER Repeater Commnet Segment Figure 32 Incorrect wiring Looping on segment Figure 29 Incorrect wiring Looping on one Modbus connected to POWER LEADER Repeater Concentrator commnet port Power Management Control Syst m mE Chapter 3 Network Wiring and Construction 3 3 Modbus Ethernet Integration Ethernet comes into play only as an alternative platform for the host PC It is most often used when an existing Ethernet network is in place or being installed for data networking purposes or when Ethernet only devices such as the EPM 7700 are to be used with PMCS To communicate with the Modbus networks and any commnet segments beneath them a host PC based on Ethernet requires an Ethernet Gateway Rather than use an RS485 interface card connect the Modbus networks to the RS485 ports on the Ethernet Gateway which is connected to the Host PC via Ethernet over which it communicates data from the Modbus networks The Ethernet Gateway offers a more nearly plug and play format with fewer wiring complexities and rules than the Modbus Concentrator See GEH 6505 Ethernet Gateway User Guide for detailed information on installing and configuring the Ethernet Gateway 3 4 Local Configuration of IEDs You must properly configure each IED connected tosthe PMC
22. or RS 232 RS 485 converter they following rules apply to each individual RS 485 network WARNING Network wiring and grounding 15 Chapter 2 Network Design l Each RS 485 network may support up to 31 Modbus IEDs Figure 7 illustrates this rule See the exception below Figure 6 31 RS 485IEDs maximum PMCS HostPC Ethemet Gateway or MSP always located atone end of Modbus network Figure 7 Network illustrating Modbus Rules 1 and 2 Exception f Rule 1 Some types of IEDs must be wired on dedicated private serial network segments one ED per serial Modbus line 2 Phe host or Ethernet Gateway must always be located at one end of any Modbus segment It may not Be located in the center of a Modbus network Figure 7 shows the correct placement of the host PC or Ethernet Gateway 37 All Modbus IEDs on a single RS 485 network must communicate at the same baud rate If IEDs with different communication speeds are connected to the same RS 485 network the whole segment will communicate at the speed of the slowest IED Figure 8 illustrates this rule Communication speeds for supported IEDs are listed in Table 1 EP M2 110 Meter no kKbnud 13 f ed Kapp 269 Ruten PAM NU NON 1488 baudi 19 2 R baud PLOSace GE Fame PLC 14 3 rennet Cis 2 K baud EPM 5 UMP 19 2 K haut EPM 5 300P 419 2 K pandi hicomect niced baud teen Correct l rent baud nete on a3hgk K3 135 never 22 AIerenthS dit networks
23. relay or to respond only toyground overcurrent fz 3ke while the main trip responds only to phase overcur 2 faults The SR 735 has eight trip indicators on the foot panel along with a button to reset the relay Four status indicators proyidea quick visual check of rei status A bar graph indicates current load as a percer of CT ratings Communieations switches on the front pane set baud rate relay address and the simulation mode for vesting Au RS485 connection is provided for compute access Software is provided with the relay to allow and simulation testing Computer access allows the display of a tri record which contains the pre trip currents and the fast five trip conditions Computer access also allows the display of metered current values as a percent of Li rating output relay status status indicators and dial seiiings The SR735 has a drawout construction and car be door or 19 inch rack mounted Application e Feeder protection any voltage level Protection and Control e Three phase time overcurrent e Ground time overcurrent e Five curve shapes e Four curve shift multipliers per curve e lOtime multipliers per curve e ANSI IAC or IEC BSI 42 curves e Phase instantaneous overcurrent e Ground instantaneous overcurrent e Pickup level for each overcurrent e Outputs trip aux trip service e Aux trip 86 lockout ground trip e Block instantaneous on autoreclose Monitoring Power Management Control
24. that control power is present e Commnet IEDs are preprogrammed with a fact rysset address You must change this address immediately upon installation of the IED Refer to the IED s user Figure 21 illustrates a sample network with IED addresses manual for instructions on assigning4n addx ss Table 7 provides details of the IEDs shown in Figure 21 e Because the commnet network a cepts a different range of addresses than th Modbus network commnet addresses must be mapped to corresponding Modbus addresses The formula for 22 Power Management Control System Chapter 2 Network Design Bat a Fan ETE ERR ET bs EI K X PETITS Eeptaptakt address 682 Lo rt L ani E e gt WE SS 2 f a a am a m EC we M m P w Ki ma te ws OI 3 vs fei 5 partera tt B alil IE sing ES addict Us adi 74 SERE Line Burt uphvle mal Lip H SS A lA A PU REESPACS Oxdiom Fotega Sa kchgas Linsup 411 4 Lo c on xd leis Taurapk ata j addni ipa adds 25a addio 205 P ke Paddu S 4 3082 Y a Y a a a a S T H M LA LR ex Eom munlxaliun Finn mde AN Pe PEE carr LE 41 cart WEARER LESS CE Bates dv EPA T3040 EPM aM uhr T3234 dit us u4dio 185 d re 215 addio 224 155 135 AE B Dos pahane llege past Sabadatkn Usaapast ELITS MES RE Tanac TLE
25. the MM2 s direct wired inputs or via the serial port A total of 6 fixed and 10 programmable switch inputs are available A wide range of starter types may be controlled by the MM using two contactor outputs and two auxiliary Power Management Control System Appendix A IED Descriptions C j outputs One analog input can be programmed by the user A programmable undervoltage auto restart function is available Motor protection features for the 4 Error No index entries found most common causes of failure are provided to prevent costly shut downs and rewinds These include overload phase unbalance locked rotor stall ground fault undercur rent and underpower As well a thermistor input can be provided to protect a hot winding The relay also checks the contactor status at start and stop commands to indicate contactor failure Alarms are provid ed to warn of additional abnormal conditions Power Management Control System AX Appendix B Reference Documents Appendix B lists documents that may be useful in designing and constructing a PMCS based power management system Questions and problems should be addressed to the GE Resolution Center 1 888 GE RESOLV Document Number GEH 6491 GEH 6505 GEH 5904 GEH 5947 GEH 6273 GEH 5892 GEH 6302 DEH 027 GEH 6435 GEK 100682 GEH 5933 GEH 5934 GFK 0356 GFK 0262 GFK 0582 MRP70000 0007 MRP70000 0004 1665 0003 C5 1601 006 7 C6 16010013 BC 16
26. to connect segments and do not determine the boundaries of the LAN They are used to extend the LAN beyond a single segment Routers bridges and gateways may be used to connect the LAN to other LANS or to a WAN 13 Power Management Control System Chapter 2 Network Design 2 4 Commnet Configuration Rules POWER LEADER commnet IEDs may be integrated into a PMCS network through a special Modbus IED called the Modbus Concentrator The rules outlined in Table 4 apply to using commnet IEDs with PMCS regardless of whether the host PC is operating on an Ethernet or Modbus network See Figures 3 and 4 for examples of commnet IEDs operating on PMCS Rules regarding Modbus Concentrator limitations Commnet wiring limitations Each Modbus Concentrator supports up to eight commnet segments Each commnet segment supports up to four commne hEDs Only one waveform capturing meter POWER LEADER Meter is allowed per commnet segment POWER LEADER Repeaters and Junction Outlet Boxes do not count toward the four IED persegment limit No connections between commnet segments are permitted Each segment must be wired independently having no contacfwith other commnet segments and connected to the Concentrator at one point Onlya no loops permitted Maximum cable length of a commnef segment is 1000 feet Maximum range between commnet IEDs on a segment 1 000 feet except for repeaters see below In no case may a c
27. wired in any configuration other than the four shown in Figure 14 Although the Monitor s RS 485 ports have separate addresses you may NOT wire the same Modbus network to both ports A two port Modbus Monitor must be wired tc two separate Modbus networks A NOTE For more information on wiring the POWER LEADER Modbus Monitor refer to DEH 027 Modbus Monitor User s Guide 17 Power Management Control System _ Chapter 2 Network Design Example A Example B makes this concern irrelevant for examples A B Modbus Modbus Modbus and D since in Example A you could have either Segnent A Segnent SEINES a single or a dual port Monitor while in Examples B and D you may onlWuse a dual port ks ke monitor s Exampte C Example D Modbus Modbus Modbus Segment A Segment A Segment B Monitor 1 Figure 14 Valid Modbus Monitor network architectures CAUTION Any other wiring of the Modbus Monitor may result in incorrect operation and EITOTS CAUTION DUAL PORT MONITOR USERS Do not connect the Monitor s two RS 485 ports to the same Modbus segment This will cause communication errors and possibly damage the Monitor Example A shows a single Modbus Monitor Wired to one Modbus segment Example B shows the sanie monitor in a dual port version wired to two different Modbussegments Examples C and D illustrate fully loaded Modbus segments No more than two Monitors akegpermitted on any Modbus segment
28. you increase productivity and reduce downtime and energy costs through power management What is Power Management Inside every switchgear lineup switchboard panelboard and motor control center flows a vast amount of information that can save and even make you money The data is in the form of power volts amperes and their time dependent waveforms that passes through the equipment every second of every hour of every day With the proper IEDs you can selectively access this wealth of information and use it to become more efficient and more productive Your power distribution equipment can go beyond its fundamental protection role to become a profit generating asset This is what power management systems are all about Benefits of Power Management A power management system provides the tools to eontrol energy costs minimize downtime and outages and optimize operation to increase productivity With such a system in place you can benefit from Less downtime Identify and correctgproblems before they lead to loss of power and or costly damage to loads such as production equipment ndfomputers Reduced energy costs Find ways to Conserve power correct billing errors reduce peak usage surcharges and leverage interruptiblemat s Improved predictive maintenance Identify simple maintenance tasks so gou can make scheduled corrections before they betome problems Faster corrective maintenance Quickly pinpo
29. 01 0057 D3 1601 0071 E1 1601 0017 E4 1601 0048 DA 1601 0070 A3 1601 0044 A8 GEH 6508 GEH 6509 GEH 6510 GEH 6511 GEH 6512 GEH 6513 GEH 6514 GEH 6515 DEH 40035 70000 0019 N A N A N A Third party IEDs IED Subject POWER LEADER Modbus Concentrator User s Guide POWER LEADER Ethernet Gateway User s Guide POWER LEADER Repeater User s Guide POWER LEADER Junction Box User s Guide MicroVersaTrip Plus and MicroVersaTrip PM Trip Units for Type AKR Low Voltage Power Circuit Breakers ae e ee RI PTE EL CIAR aas A EL a Break and Power Break Il Insulated Case Circuit Breakers and R Frame Molded Case Circuit Breakers aud ous Voltage Power Circuit Breaker Conversion Kits POWER LEADER Meter User s Guide POWER LEADER Electronic Power Meter User s Guide POWER LEADER Modbus Monitor User s Guide Spectra RMS Electronic Control Module MDP Overcurrent Relay with commnet MicroVersaTrip Plus and MicroVersaTrip PM Rating Plugs MicroVersaTrip Plus and MicroVersaTrip PM Trip Units in Spectra RMS Molded Case Circuit Breakers GE Fanuc Series 90 30 Programmable Logic Controller Installation Manual GE Fanuc Series 90 70 Programmable Logic Controller Installation Manual GE Fanuc Series 90 Programmable Logic Controller Serial Communications User s Manual Electronic Power Meter 3710 Electronic Power Meter 3720 Multilin Power Quality Meter PQM Multilin 239 Motor Protection Relay Multilin269 Motor Mana
30. 1 9600 baud SR469 Motor Management Relay N Multilin 565 FeederManagement Relay at main power feed RS 485 Port B Modbus Monitor 1 550 RS 485 Port A Assembly Line Area EMVT C 600 Trip Unit jm Multilin 2 6 9 Motor Relay Terminating Resistors 2 Network 2 2400 baud Multiin 239 Motor Protection Relay Machining Area Modbus Concentrator SpectraECM Modbus Monitor 2 POWERLEADER EPM GHO Corp Machine Shop network wiring diagram Figure 27 Floor layout for Case Five Confident that his new design will provide maximum performance and with his wiring requirements and limits Power Management Control System Chapter 2 Network Design met Bill selects Modbus addresses for the IEDs He checks Section 2 7 and sees that he can assign the Modbus IEDs on each network any Modbus address between and 247 except for the Modbus Concentrator which must have an address between and 32 The commnet IEDs must have Modbus equivalent addresses between 33 and 247 He selects addresses and records them for future reference The address chart is shown in Table 12 RS 485 IED Type Physical Modbus Network Location Address Multilin 565 Power intake 01 area Multilin 269 Assembly line 01 3 SR469 Motor Assembly line 01 Management Relay Modbus Monitor Lathe area 02 1 RS485 Port A Multilin 239 Machining area 03 Motor Protection Relay Modbus Moni
31. 16 Generator Parameters The Generator PLC offers the following features Metering and Monitoring e Metering A V W var Hz e Generator Parameters e Paralleling Switch gear parameters Electronic Power Meter EPM 7330 The EPM 7330 gives you all the high accuracy measurements of the EPM 7300 plus on board data storage setpoints standard digital I O and an optional Ethernet port and optional built in modem either of which can be used as a gateway to as many as 31 serial devices Power Management Control System fe Appendix A IED Descriptions Applications Summary e Cost Allocation amp Billing e Demand amp Power Factor Control e Load Studies amp Circuit Optimization e Equipment Monitoring amp Control e Preventa veMaintenance The EPM 7330 offers the following features Measurements e Energy bi directional absolute amp net e Demand Sliding Window Predicted amp Thermal e Harmonics individual amp total harmonic distortion up to the 15th Communications e allows distribution of metered data and alarms over the Internet e 1 Optional built in modem allows access to up to 31 RS 485 devices e Optional Ethernet port with EtherGate allows access to RS 485 device networks e 2 RS 485 ports e front panel optical port e Modbus RTU on serial Ethernet moder infrared ports e DNP3 0onserial modem amp infrared ports On Board Data Logging e Scheduled or event driven logging of up ta 32 par
32. 51 POWER LEADER Meter Facility 2 Segmenb5 Port 3 IED 72 POWER LEADER Meter Facility2pSesment 4 Port 3 IED 60 POWER LEADER EPM Fagility 2 Segment 1 Port 3 IED 34 POWER LEADER MDP Overcurrent Rela Facility 2 Segment 4 Port 3 IED 61 Spectra ECM Facility 3 Segment 3 Port 3 IED 52 Table 11 IED Addresses for Case Four Chapter 3 provides physical wiring requirements and rules For commnet wiring he ll use Belden M841 9 cable For RS485 wiring he ll use Belden 3074F cable and the correct terminating resistors for both ends of the RS485 networks Bill installs the IEDs at the equipment4according to the instructions in each user manual and runs the RSA85 cable for each RSA85 networkfrom the Ethernet Gateway to each Modbus IED in daisy chain fashion one IED to the next and terminated at each end Bill runs the c mmmet cable from the Modbus Concentrator for each comn et segment grounded only at the Modbus Concentrator He assigns local Modbus addresses to the Modbus IEDs and sets communication speeds and parameters according to the instructions in each user manual Next Bill setsuthe local address at each commnet IED accordingto what he wants the Modbus equivalent address of each IED to be He configures the Modbus Concentrator either manually or with the autoconfigure option following the instructions in the Concentrator User Manual During configuration the Concentrator probes each of its commnet
33. 56 cycles of oscillography data The relay performs selftests in the background during operation A simulation function allows you to test the relay without the need for external ac voltage and current inputs The relay has a two line display and keypad as well as three serial ports for computer interface Application e Industrial and utility feeders Protection and Control e Complete time overcurrent e Complete instantaneous overcurrent e Directional overcurrent control e Undervoltage and overvoltage e Negative sequence voltage e Undervoltage automatic restoration e Bus underfrequency e Underfrequency automatic restoration e Breaker failure e Manual close control e Cold load pickup control e Four setting groups e Syncrocheck V f Hz amp dead source e 4programmable logic inputs e Bus transfer Monitoring and Metering e Fault locator records flast40 faults e Breaker operation amp trip failure e VT Failure e Power factor two independent stages e Analog input lev l and rate e Total breakeMar ing current e Event recorder Last 100 events e Oscillography 256 cycles e Metering V I Hz var VA PF ec Demand lo lo lj MW Mvar MVA e Data Logger User Interface e 40 character display and 24 LEDs Appendix A IED Descriptions e Full numeric keypad e RS 232 and RS 485 ports SR760 Feeder Management Relay The Multilin SR760 Feeder Management Relay is an enhanced version of the Multilim SR750 relay
34. Ds must communicate through the Modbus Con entrator PMCS supports a wide variety of GE and third party power management IEDs These IEDs are listed in Table 1 along with their function communications IED Name Function Communications Protocol Modbus Speed Protection Control Modbus RTU 19 2 Kbaud Protection Control Modbus RJU 2400 baud Protection Control Modbus RTU 9600 baud Protection Control Modbus RTU 19 2 Kbaud Metering Control Modbus RTU 19 2 Kbaud Protection Control Modbus RTU 19 2 Kbaud EPM 3710 Meter Metering Modbus RTU 19 2 Kbaud EPM 3720 Meter Metering Modbus RTU 19 2 Kbaud EPM 7300 Meter Metering Modbus RTU 19 2 Kbaud EPM 7700 Meter Metering Control Modbus RTU 19 2 Kbaud Note Native Ethernet device EPM 5000P Meter Metering Modbus RTU 9600 baud EPM 5200P Meter Metering Modbus RTU 9600 baud EPM 5300P Meter Metering Modbus RTU 9600 baud EPM 5350P Meter Metering Modbus TCP Ethernet 10BaseT RJ 45 EPM 9450Q Meter Metering Control Modbus RTU 38 4 Kbaud Modbus TCP Ethernet 10BaseT RJ 45 EPM 9650Q Meter Metering Control Modbus RTU 38 4 Kbaud Modbus TCP Ethernet 10BaseT RJ 45 GE Fanuc PLC 90 30 Protection Control Modbus RTU 19 2 Kbaud GE Fanuc PLC Micro 90 Protection Control Modbus RTU 19 2 Kbaud Universal Relay Protection Control Modbus RTU 19 2 Kbaud MicroVersaTrip C and D Trip Units Metering Protection com
35. EH 6491 and records them for future reference Bill S address chart found in Table 11 follows the floor layout Facility Two Terminating Resistor am RS485 repeater Modbus Concentator e Commnet Segment 1 Segments t POWER LEADER Meter PLEPM EMVT EMVT EMVT Segment2 CO E MVT EMVT Segment4 Sam MDP POWER LEADER Segment3 Meter _ POWER LEADER Repeater Figure 26 Floor layout for Case Four 31 Power Management Control System Chapter 2 Network Design IED Type Multilin 565 Physical Location Power intake area Multilin 269 Assembly line RS 485 Port Modbus or equivalent Address Port 1 IED 01 Port 2 IED 01 EPM 7700 Jathe area N A native Etlfer et IED PLC 90 30 Assembly line Facility 2 north wall EPM 3720 Machining Modbus Concentrator EPM 3720 Milling Enhanced MicroVersaTrip trip unit Enhanced MicroVersa Trip trip unit Facili Enhanced MicroVersa Trip trip unit geben MicroVersaTrip trip unit 2 Seg Facility 3 Segment 2 Facility 2 Segment 3 Port 3 IED 02 Port 3 TED 03 Port IED 01 Port4 IED 02 Port 3 IED 33 Port 3 IED 40 Port 3 IED 41 Port 3 IED 50 ent 2 Enhanced MicroVersa Trip trip unit Enhanced MicroVersa Trip trip unit Facility 2 Secment5 Port 3 IED 70 Port 3 IED 71 POWER LEADER Meter Facility 3 Segmentg Port 3 IED
36. Figure for an example ofthis configuration Table 4 for commnet wiring rules Host PC is Follow these rules for the based on host And these rules for the attached Modbus network s Modbus l The host PC can support 1 Each Modbus network supports up to 3ph sical Modbus IEDs up to 256 independent and up to 247 Modbus addresses Thistis possible because Modbus networks The commnet IEDs attached to Modbus Concentrators occupy actual number is Modbus addresses but do nof create an electrical drain on the RS determined by the 485 network and thus are not counted as physical Modbus IEDs communication cards Each Modbus network mustbe properly terminated at each end installed in the host PC of the network See Secti n 224 see below 3 Maximum cable length ofeach Modbus network is 4000 feet See 2 The Modbus networks are notes on using repeatersto increase this range Section 2 4 Also connected to the host PC see the note regarding Substation installation in Chapter 3 via an eight port RS 485 communications card All ModbusdEDs attached to a single RS485 network must communi ate at the same baud rate See Table 1 for Modbus An option for more Wei limited systems is an RS IEDs tomm nication speeds 232 RS 485 converter 5 R amp 485 cable shields must be properly grounded For maximum SS which permits a single RS protection against surge and EMI damage each IED on the 485 network networkshould ha
37. GEH 6502 POWER LEADER Power Management Control System Network Architecture Guide WARNINGS CAUTIONS NOTES GEH 6502 WARNINGS CAUTIONS AND NOTES AS USED IN THIS PUBLICATION Warning notices are used in this publication to emphasize that hazardous voltages currents or other conditions that could cause personal injurgexist in this equipment or may be associated with its use Warning notices are also used for situations in which inattention or lack of equipment knowledge could cause either personal injury or damage te equipment Caution notices are used for situations in Which equipment might be damaged if care is not taken or which may cause communicafiorr exrers to occur Notes call attention to information that is especially significant to understanding and operating the equipment This document is bas d on formation available at the time of its publication While efforts have been made to ensure accuracy the information contained herein does not cover all details orgvamations in hardware and software nor does it provide for every pos sible contingencytin connection with installation operation and maintenance Features may be described herein that are not present in all hardware and software systems GE Industrial Systems dssumes no obligation of notice to holders of this document with respect to changes subsequently made GE Industrial Systems makes 10 representation or warranty expressed imp
38. Network illustrating Modbus Rule 6 eee AA eee 17 Figure 11 Network illustrating Modbus Rule 7 Rennes 17 Figure 12 Network illustrating Modbus Rule 8 as ner 17 Figure 13 Network illustrating Modbus Rule 9 Agite 17 Figure 14 Valid Modbus Monitor network architectures eer lieet nnne tnnt arca casarnos 18 Figure 15 Network illustrating commnet Rule 1 lr RIM coronar arrasar entente ntntentntntnntntontn tennis 19 Figure 16 Network illustrating commnet Rule 2 9f Sr 19 Figure 17 Network illustrating commnet Rule 3 48 A agissent tente ttnto tanto nannte 19 Figure 18 Network illustrating commnet Rule 4 AN sine 19 Figure 19 Network illustrating commnet Rule 6 D rss 20 Figure 20 Network illustrating commnet Rule 6 eden ecce tnnentntnn tnter tnt ttn tente te intente tette tn tnd 20 Figure 21 Sample network with IED addresses 48 99 em nn 23 Figure 22 Floor layout for Case One ann EE A AA 26 Figure 23 Redesigned layout for Case One Mareos hrs 26 Figure 24 Floor layout for Case WO in E 28 Figure 25 Hoor layout for Case Thee sto lo ee ia 29 Fig
39. PLC and the 2 4 wire converter Only Port 2 can be used for RTU communication on the 28 point Micro 90 At the end opposite the connector strip about 3 inches off the outer jacket of the cable Connect Tech RS 485 card For this connection you ll need a length of Belden 9271 cable covered with sleeving and a female DB 9 connector The DB 9 connector should have the following jumper connections made inside the connector e PinltoPin2 e Pin3toPin4 e Pin6toPin 7 e Pin 8to Pin9 Connect the cable to the DB 9 connector as follows __ Conductor DB9 Pin Cable Bue hB A Shield Metal Shell Apply heatshrink tape or jacket over the onnector for protection At the end opposite the connecfor strip about 3 inches off the outer jacket of the cable Ethernet Gateway The Ethernet Gateway RS485 connection requires one 4 amp inch length of B lden 9271 cable covered with sleeving and a male DB 9connector Connect one end of the cable to the DB 9 connector as follows Conductor DB 9 Pin White rt 67 OD D N Y O lt hs O O t D E D C M C ae D S O LL N D Par c GE Industrial Syst General Electric Company 41 Woodford Ave Plainville CT 06062 6502 R045 01 02 2000 2002 General Electric Company
40. S Be sure to set the IED address at the IED angat the host software set the communication speed and configure any necessary settings For detailed directions on setting gaddresses communication speed and protection parameters refer to the user guide for each IED 4 3 5 Applying Power to the System AX WARNING Voltages hazardous to personnel and equipmen iay be present at the power connections oe pm m gm me Once you ve installed the PMGS network you should apply power to the network from the bottom up ollow this procedure when applying power to the system for the first time 1 Make sure that alFeommunications wii has been correctly connected to each IED and tha he system matches tBe plam exactly meeting al rules and requirements explained in this manual Make stte that all wiring for control pow to IEDs has been correctly installed and that tir correct controlwoltage is present at each IED If commnet IEDs are installed apply co itroi power to the IEDs and then to the Modbus Corc ntiator to which they are attached Apply control power to any Modbus RT ET Apply control power to the Ethernet Gateway if one is being used Turn the computer on and start the PMCS software according to the instructions in the software manuals 3 6 Software Loading and Startup Refer to the Power Management Control Systeix software installation procedures in GEH 6514 Read This Sook First Power M
41. ac line to neutral and 600 Vac line ie Hine For higher voltage systems PES with 12G Vac secondaries may be used The trafisfornzer lt 3ipled current inputs provide 300A surge protecticr aud accept CTs with 5 A full scale outputs Electronic Power Meter EPM 7300 The Electronic PowerdMeter 7300 provides over 100 high accuracy three phase measurements ts corobect size simple Anstallation and high reliability zie it ideal fon userig panelboards switchboards switch seat gensets ando UPS systems With RS485 communicat ons it can be integrated into a power management svstem suchas PMOS Instantaneous Measurements e Voltage 1 1 1 n per phase and average e Current per phase and average e Real Power per phase and total e Reactive Power per phase and total e Apparent Power per phase and total e Power Factor lead lag per phase and toral e Voltage Unbalance e Current Unbalance e Frequency Energy e Imported exported absolute and net kWh amp kVARh Accumulated kVAh Demand e Sliding Window Predicted and Thermal Demand on kW kVAR kVA and I average Minimums and Maximums e Voltage H lI n per phase e Current per phase e kW kVAR kVA PowerFactor Frequency e SUAM Window Demand for kW and kVA Electronic Power Meter EPM 7500 7600 7700 The EPM 7500 7600 7700 is a highly advanced digital power meter suited to virtually any power monitoring and control application This Intelligent Electroni
42. adding a four shot recloser EPM7430D EPM7450D The Futura multifunetion digital power nonitoring system offers the most extensive monitoring and analysis availabl amp ASurp ssing all other meters in its class this unit fultills all your metering data recording and power analysis needs This is simplv the best power monitorinSyandwanalysis solution ever For a graphical view of al the meter can do check out the Futura Communicator link You will be very impressed Features e AMultifunction Power Monitoring Measuring Every Parameter of Electrical Power e True RMS with 0 15 Accuracy e Extensive On Board Storage fc Virtually Unlimited Data Trending e 100 High Speed Captured Waveform Events for Voltage and Current Surges and Sags All 6 Channels 60 Cycles Per Channel Constitute an Event e Dual Digital Communication Ports Modbus RTU ASCI DNP 3 0 Modbus and Ethernet TCP IP e Harmonic Distortion to the 31st Order e Multiple and Remote Displays e Extensive Digital and Analog I O Capabilities and Storage Motor Manager Il MMII The Motor Manager 2 MM2 combines control functions and comprehensive motor protection in one package This compact device provides sophisticated control and protective relaying at significant cost savings over the discrete devices normally found in a low voltage motor control center MCC One MM2 is required for every starter in the MCC The contactor can be energized and de energized using
43. al features include e Viewing metering information at remote locations e Historical trending of any metered data e Tracking the status of protective and metering IEDs e Alarm and event management e Report generation e Waveform capture and analysis e Remote control of IEDs e Remote configuration of IEDs Interaction with Cost Allocation software to provide facility energy and demand data The Power Management Control System accomplishes these tasks through a network of attached IEDs that serve to protect equipment and collect and transmit data These IEDs include trip units metering IEDs protective relaying IEDs and others They communicate on either the POWER LEADER communication network commnet Modbus RTU communications protocols OR Ethernet to transmit data to the PMGS software You can operate PMCS software from either a PC running directly on the Modbus platform or from a PC connected to an Ethernet network which is linked to the Modbus network via the POWER LEADER Ethernet Gateway Some devices such as the EPM 7700 communicate directly over an Ethernet network and do not require an Ethernet Gateway Power Management Control System f Preface How Does PMCS Work The PMCS software runs on a PC called the host The host is linked to the power management IEDs through a network RS485 and speaks to them using the Modbus RTU communications protocol The heart of PMCS is a piece of software ca
44. alled GHO Corp is installing a power management system based on PMCS In Case One GHO Corp has only afew Modbus RTU based IEDs that it would like to network to the PMCS software for remote control and viewing of power consumption and alarms In Case Two GHO Corp Wishes to expand the Modbus network it developed im Case One by adding some commnet IEDs tothe network In Case Three GHO orp already has an existing network based on Ethernet and would now like to integrate a power management system with this network GHO Corp still has only a few Modbus RTU based IEDs that it would like to network to the PMCS for remote control and viewing of power consumption and alarms Nowghowever it wants the host to be based on Ethernet rather than Modbus which requires the use of an EthernepGateway Chapter 2 Network Design In Case Four GHO Corp wishes to install a PMCS power management system using both Modbus and coinmnet based IEDs with the host based on Ethernet Case Five demonstrates the use of dgal port RS 485 LEDs in a Modbus network showing the differences between the Multilin dual port IEDs and the POWER LEADER Modbus Monitor which also provides two RS 485 parts Case Study One GHO Corp has assigned ts plant engineer Bill the task of designing and installing a simple power management system GHO Corp wishes to use PMCS to moniter and control several Modbu amp power management IEDs Bill s firsttask i
45. ameters e Sequence of events amp min max logging e Setpoints for Control and Alarms e Setpoint on any parameter orCOnditi n e lsecond operation Inputs and Outputs e 4digital inputs for statfiS counter functions e 4relay outputs fer contr l pulse functions e Optional Analog inputs aiid outputs Switchboard Draw out Cases e Fits into existing ME Sl or ABB FT2I switchboard cases Instantaneous Measurements e Voltage H ln per phase and average e Curr nt per phase and average e RealPower per phase and total e Reactive Power per phase and total e Apparent Power per phase and total e Power Factor lead lag per phase and total e Voltage Unbalance e Current Unbalance e Frequency Energy e Imported exported absolute and pe k amp kVARh Accumulated kVAh Demand e Sliding Window Pxedicted and Thermat Demand on kW kVAR KVA and I average Minimums and Maximums e Voltage H la per phase e Current per phase e kW KVAR kVApPower Factor Frequency Sliding Window Demand for kW and kVA Electronic Power Meter EPM 3710 ThegEleetronic Power Meter EPM 3710 is a 16 bit mitroprocessorbased digital instrumentation package for three phase industrial commercial and utizity poWemsystems The EPM 3710 offers a large arzav of measurements waveform capture for bhbarmemis analysis and setpoint controlled relays including the following features e Three phase voltage inputs e Three phase current inputs e Neutra
46. anagement Control System Chapter 4 Trouble Shooting i Chapter 4 Trouble Shooting This chapter presents basic trouble shooting procedures for PMCS networks It is not meant to be a comprehensive guide covering every possible contingency but will help to resolve the most common difficulties If the information presented here does not resolve the problem contact a Resolution Engineer at the GE Resolution Center at 1 888 GE RESOLV 4 1 Communication Network Trouble Shooting One of the most useful tools for trouble shooting network problems is a one line diagram The following procedure uses such a diagram 1 Obtain a one line diagram of the system SE 2 Verify that none of the Modbus network configuration rules detailed in Chapter 2 have been violated 3 If POWER LEADER commnet IEDs are attached to the network via Modbus Concentrators you must check their configuration as well Examine each _ Concentrator and its attached commnet IEDsfto verify that none of the commnet network configuration rules detailed in Chapter 2 hav amp abeen violated If the network complies with these rules or Mas been modified to comply with them and problems persist continue with the remaining steps 4 Determine if any communication is P ssible Select a Modbus IED whose wiring connection you have checked from the host to th IED and attempt communication from the host te th IED If no communication can be
47. ance performance by considering the following recommendations for Modbus commnet The Ideal Network Theoretically a single Modbus IED or 40 commnet IEDs distributed across five Modbus Concentrators one IED per commnet segment yields maximum performance Naturally in the real world few networks will fall into this precise configuration To extract maximum performance from the PMCS follow the performance recommendations below Modbus performance recommendations 1 Use multiple RS485 networks if possible depending on the RS485 connection at the host If using an eight port RS485 card or an Ethernet Gateway four ports for connection to the network you can improve performance by using the full number of ports available rather than burdening a single RS485 port Distributing the IEDs across all available RS485 ports permits the communications load to be distributed rather than asking a single network to carffathe fall load 2 Divide the IED loads evenly when distrib ting IEDs across multiple RS485 networks 3 Pay careful attention to Modbus Rule2 regarding the communication speeds of IEDsfon amp given network Although a network will functionywith mixed IEDs its communication speed will be dragged down to the lowest common denominator Thus a single 2400 baud IED forces the entire network to communicate at 2400 baud regardlesssof the presence of any 19 2 kbaud IEDs Commnet performance recommendations l Mo
48. as commnet IEDs Figure 15 illustrates this rule Modbus Concentator 4 commnet IEDs segment max EU ES Se ae ENTER EXTA ETE METER ELTE TES m ilii AIL mmnet Rule 1 O Figure 15 Network illustrating 2 A commnet segment mag baveno more than 1000 feet of cable between the M dbus Concentrator and the final IED on a segment Repeaters may be used to extend this rang see Rule 3 Figure 16 illustrates this rule Modbus Con entrator 300 ft MIS TA 2 ft ft ER ft Max length of a commnet segment lt 1000 feet Figure 16 Network illustrating commnet Rule 2 3 The maximum communication range of commnet IEDs including the Modbus Concentrator s commnet ports is 1000 feet after which its signal 19 Chapter 2 Network Design degrades and the danger of errors rises to an unacceptable level The Repeater regenerates a signal to its original strength allowing ifto travel up to another 1000 feet Thus ea h Repeater can add up to 1000 feet of range to the commnet segment For example a segmentAc ntaining a single Repeater may have no more than 2000 feet of total cable length No more than 1000 feet of cable are permitted between the Modbus Concentrator and the first Repeater or between the Repeater and the last IED on the segment Figure 17 illustrates this Tule CAUTION In no case may there be more than 1000 feet lof cable between any two commnet IEDs other than Repeate
49. ase L LAN thetmaximum length of a segment is 100 meters 328 ft The minimum length of any cable is 2 5 Meters or about amp ft This minimum length is of particular concern When a device is located in close proximity to the hub Maximum number of segments A 10Bas amp T LAN can consist of up to 5 segments using 4 repeaters However only three of these segments can have devices connected Maximum number of devices Chapter 2 Network Design A lOBase T LAN can have a maximum of 1024 devices connected Use of repeaters routers bridges gateways etc Repeaters may be used to connect LAN segments and do not determine the boundaries ofthe LAN They are used to extend the LAN beyondsa single segment Routers bridges and gateways may be usedito connect the LAN to other LANs or to a WAN 10Base FL specifications tand rules Maximum Minimum length of segments For a lOBase EEBAN the maximum length of a segment is 2000 meters 6500 ft The minimum length of any cable is 2 5 Meters orjabout 8 ft This minimum length is of particular coneern when a device is located in close pr ximity to the hub Maximumnumber of segments A lOBase FL LAN can consist of up to 5 segments using 4 repeaters However only three of these segments can have devices connected Maximum number of devices A 10Base FL LAN can have a maximum of 1024 devices connected Use of repeaters routers bridges gateways etc Repeaters may be used
50. ates the cable length of each RS485 network and finds that none are over the 4000 foot limit so he won t need to use any RS485 repeaters The commnet segments 33 are also within the wiring limits so no POWER LEADER Repeaters are required The factory floor is very large though and Bill wants to be able to view IED data at several locatiOnsdo save walking all the way back to his office everytimethe wants to check an IED To serve this purpose he s purchased a pair of dual port Modbus Monitors which hewill install in the Milling and the Machining areas Pespectively He checks the Modbus Monitor wiring rules andssees that he ll be able to connect RS 485 Network 3 to the RS485 Port A of each Monitor and RS 485 Network 4 to the RS485 Port B of each Monitor This wilFallow him to view data from the IEDs in these areas either station as well as back in his office at the host PG Proper tefminati n is required at each end of the network and is provided at the RS485 card by placing jumpers betw en the eorrect pins see RS485 card user manual The appropriate terminating resistors must be used at the opposite end of each RS 485 network per Section 2 4 rule 4 Ihe network architecture diagram Bill creates is shown in Bigure 27 RS 485 networks terminated at host PC Network 4 19 2kbaud Lathe Area ay SR750 Feeder Management Relay Milling Area Network 3 19 2 kbaud 400 EPM 3720 Electrcnic Power Meter Network
51. atically to the display The PLEPM monitors and displays the following electrical parameters e RMS current Phases A B C and neutral Power Management Control System r Appendix A IED Descriptions e RMS voltage Phases A N B N C N A B P C C A e Watts Phases A B Cand total e VARs e Volt amps Phases A B C and total e Power Factor total e Watt hours total e VARs Phase A B C and total e VAR Hours Total Lag Total Lead and Total e Current demand e Peak current e Watts demand e Peak watts demand e Frequency Hz The PLEPM is available in configurations accepting direct voltage inputs from 69 Vac to 600 Vac For system voltages greater than 600 Vac external PTs must be supplied Meter current inputs are rated at 5 amps ac nominal External CIs must be supplied POWER LEADER Ethernet Gateway The Power Management Control System host may be located on a PC connected to an Ethernet If this is the case an IED named the POWER LEADER Ethernet Gateway is required to connect Modbus based networks of IEDs to the Ethernet based host PC The POWER LEADER Ethernet Gateway is an industrial comp ter equipped with Modbus and Ethernet communications It provides an interface for transferringamessages between an Ethernet network and up to four Modbus networks containing up to 31 IEDs each Serving as a traffic controller to pass messages Qbetween the Modbus network s and Ethernet network
52. attach the power management IEDs to the network These IEDs are described in Section 1 8 Host Computer The heart of the PMCS is software running on a host PC Regardless of whether the host PC is based on an Ethernet or Modbus network its functions include the following Communication management Primary user interface Data collection storage and retrieval Eventreporting with time and date stamp Energy calculations and trending e Network IED status Alarming and reporting The minimum requirements for the host PC are presented in GEH 6514 Read This Book First The communications interface is the connectiom between the host PC and the network of IEDs Your host will require either an Ethernet communications cards an RS 485 communications card or an RS 232 RS 485 converter An Ethernet based host PC requires an Ethernet network card A Modbus based host PC requires an RS 485 interface card or an RS 232 RS 485 converter These are described below RS 485 Interface Card or RS 232 RS 485 Converter The RS 485 interface card provides the interface between the host PC and the Modbus network and terminates the network at theZhost eomputer This standard RS 485 interface card provides eight RS 485 ports PMCS supports up to 256 RS 485 ommiinication ports See Sections 2 1 2 4 and 2 7 for mofe details on using multiple RS485 networks with PMCS For more modest needs a single RS 485 network can be provided b
53. c Device IED can take the place of numerous transducers meters and control circuits in a power monitoring system The EPM 7700 provides true RMS Power Management Control System o L Appendix A IED Descriptions measurements of voltage current power and energy complemented by extensive LO capabilities comprehensive logging and advanced power quality functions ws Instantaneous Measurements e Voltage l I I n per phase and average e Current per phase average and neutral e Real Power per phase and total e Reactive Power per phase and total e Apparent Power per phase and total e Power Factor lead lag per phase and total e Voltage and Current Unbalance EP os Energy e Imported exported absolute and net kWh amp KVAR Accumulated kVAh Demand e Calculates Demand and Peak Demand on any instantaneous value Defaults Sliding Window Predicted and Thermal Demand on kW kVAR kVA and I average Minimums and Maximums e Any parameter over any time interval e g daily nionthly GE Fanuc PLC 90 30 GE Fanuc s Series 90 30 Programmable Logie Controller PLC is a family of controllers O systems and specialty modules designed to meet thedemand for a versatile industrial control Its compact backplane design allows up to five modules to Be easily snapped in for access to a large variety of discrete and analog I O modules as well as specialty modules Various modules can provide control for a wi
54. c PLC Micro 90 GE Fanuc s Series 90 Micro PLC Programmable Logic Controller offers power flexibility and robust construction in a compact package The Series 96 Micro PLC is an ideal way to replace relays and auiomaie small processes Its all in one construction saves panel space and its powerful features bring productivity and cost savings to even the most cost conscious control applications The Micro PLC is a perfect solution for such applications as packaging industrial machinery material handling and printing EPM 5000P 5200P 5300P 5350P The EPM 5000P 5200P 5300P 5350P multifunction monitoring system replaces all individual single function meters and transducers This monitor measures volts amps frequency and ali power functions including watts vars frequency power watt hours var hours demand harmonics and more It offers 283 readings in a standard switchboard size footprint The EPM 5000P 5200P 5300P 5350P also displays o THD K factor and harmonic waveforms advanced Power Management Control System The EPM 5350P offers the following features other than sin the series 9 Ethernet TCP IP The 5000P 5200P 5300P 5350P device series offers the following features e Measures Volts Amps Watts Vars VA PF a K Frequency Watt Hour VA hour VAR hour e Measure Harmonics to the 31st Order e Provides Captured Waveform of Voltage and Current Set Point sr Control With Logical Descr
55. dbus is pfreferred over commnet where either protocol is available This is the case for the POWER LEADER Electronic Power Meter and the POWER LEADER MDP Overcurrent Relay Each of these IEDs offers a Modbus communications option 2 Minimize the number of commnet IEDs per segment The Modbus Concentrator is a polling IED meaning that it queries each commnet segment continuously and in order asking for information It then stores the 2 information until itis asked by the PMCS to transmit its data to the host If the number of commnet IEDs is unevenly distributed the Concentrator fakes longer than necessary to poll each segment 3 Keep dataintensity in mind when connecting more than eight commnet IEDs Qto a single Modbus Concentrator If it is necessary to connect more than eight commnet IEDs to asingle Modbus Concentrator one or more segments will be supporting multiple IEDs Keep the following list in mind when selecting which IEDs to double up on the same commnet segment The best choices for doubling up are listed first l Spectra MicroVersa Trip trip unit 2 Enhanced MicroVersaTrip C and D trip units 3 POWER LEADER MDP Overcurrent Relay 4 Spectra Electronic Control Module 5 POWER LEADER Electronic Power Meter 6 POWER LEADER Meter IEDs at the top of the list are less data intensive and easier for the Concentrator to poll IEDs at the bottom of the list are very data intensive and if possible should be
56. dditional power management IEDs However the IEDs they wish to add are all commnet IEDs The host platform is based on Modbus with a multisp rt RS485 interface card providing the connection to the networks Knowing the host platform and its currently attached IEDs Bill makes a list of the IEDs that GHO Corp want to add to their PMCS network His list of additional IEDs is e Six Enhanced MicroVersaTrip trip units for equipment protection e Three POWER LEADER Meters for waveform capture One POWERLEADER EPM e One POWER LEADER MDB Overcurrent Relay OneSpectra Electronic C ntrol Module Commnet IEDs require Modbus Concentrators to be recognized by the PMGS Bill has nine commnet IEDs to connect so he will need only one Modbus Concentrator each Concentrator supports up to 32 commnet IEDs However with some of the commnet IEDs located in Facility Two well beyond the 1000 foot segment limit Bill realizes that he must either locate the Modbus Concentrator in Facility 1 and run several very long commnet segments using POWER LEADER Repeaters to span the long runs or place a Modbus Concentrator in Facility Two and extend his RS485 network over to Facility wo with RS485 repeaters Bill decides that it will be easier and more cost effective to run a single long RS 485 segment with a pair of RS485 repeaters than to extend six commnet segments An added benefit each repeater uses optical isolation between its incominggand o
57. ddresses and communication settingstof all attached IEDs Check that theDDE Server is correctly installed and running Ensure that the RS485 card or RS 232 RSA8 5 converter is properly installed at the host PC and that the RS485eables are correctly attached to the interface card Onconverter RS 232 RS 485 converter Ensure that the DIP switches inside the converter are set properly for the baud rate of the RS 485 segment See the converter documentation for further information amp instructions Check the connections at the host PC Ethernet card for loose or improper connections Check with LAN personnelfor network wide problems that might be affecting the Ethernet Gateway or host Check that the Ethernet Gateway has control power and is properly connected to the Ethernet and tc the RS 485 ports Make sure that the Gateway has been properly configured for the attached RS 485 networks Refer to the XPRESS Card manual that accompanied your meter PMCS Ethernet connections require the following XPRESS Card settings l An IP address mandatory 2 Asubnet mask network dependent option 3 A default gateway optional required to communicate between networks 4 IP port number must be set to 7700 mandatory 5 Usethe ION protocol mandatory Power Management Control System Symptom Possible Cause EPM 7700 only 9 Network configuration is incorrect Chapter 4 Trouble Shooting ee ee Cor
58. de range of applications such as high speed packagin p material handling complicated motion control water treatment continuous emissions monitoring mining food processing elevator control and injection molding PLC 90 30 functions supported by PMCS are listed below under the PLG90 70Meading GE Fanuc PLC 90 70 GE Fanuc Series 90 70 Programmable Logic Controllemeff ts a greater level of power and flexibility than the Series 90 30 and is the preferred choice for high density input output The 90 70 shares the 54 er ss M flexible backplane design of the 90 30 while cring selection of more powerful microprocessor CPU The Series 90 70 PLC offers access to a large variety o discrete and analog I O modules n modules supporting eight to 32 circuits in variety of yc un available as are a range of output Moguies ite features and functions provided by the PLC 62 70 vac depending on the options installed jim the Le tant See your GE Industrial Systems s le engineer for mas details on the PLC 90 30 er 90 70 The PLC 90 30 and PIS 90 70 functions sur orici by the Power Management Gontrol System ircude the following e Reading f inp tand output tables e Reading of registers e Reading ofanalog inputs e Reading of exception status Preset single registers e Foxcemultiple outputs e Preset multiple registers e Report IED type e Read scratchpad memory GE Fanu
59. dvanced features including the following e Three phase voltage inputs e Three phase current inputs e Neutral ground current input e Three relay outputs e Four digital inputs with pulse counter on all four inputs with maximum pulse count frequency of 4 IOHz One analog voltage input one analog current output e 729 measured parameters including harmonic distortion and demand e Waveform apture triggering communications port or setpoint e Waveform ecording triggering communications port or setpoint e Eight programmable trend logs 12 parameters each 11 520 record capacity 4O days triggered by time interval or setpoint e Event log with 100 records standard resolution one second e Minimum maximum logs one preset with over 100 parametets 1 6 programmable logs of 16 parameters ach with trigger parameter for each log 17setpomits41 stafidard speed six high speed trigger eventllogfrelay control snapshot log waveform capture or waveform recorder The Electronic Power Meter 3720 provides hundreds of high aceuracy real time measured parameters as well as miniraa Maxima and status parameters Allevolt ge current power and energy readings are true RMS and sensitive to beyond the 50 harmonic Fourquadrant readings measure bidirectional Qt QO Appendix A IED Descriptions import export energy flow useful in any cogeneration application No PIs are required on the voltage inputs for 3 siems up to 347 V
60. e PMCS will be operating ongEthernet he will need to use an Ethernet Gateway to relayycommunications between the host and the Modbus networks Table 1 also indicates that the Modbus IEDs have different communication speeds For performance reasons Bill decides to break the IEDs off to independent networks rather than connect all of them to th same RS 485 network The Ethernet Gateway offers Zur RS485 ports so using more than one portypOses no additional cost burdens or configuration concerns Bill turns to his floor layout t6 seerjust where the wiring could be run and how much distance it must cover He maps where his IEDs mustQbe Jocated and where the Ethernet Gateway will sitAble then measures the cable runs required to connect the IFDs to the Ethernet Gateway keeping in mind that theyRS 485 rules require hira to daisy chain the IEDs One after another His floor layout is shown in Figure25 RS 485 networks terminated atbElhernelGaleway Network 4 19 2kbaud E d i Millng Area Lalhe Area Ehemel Mullilin SR745 Transformer Management Relay Network 1 9600 baud Network 3 192 kbaud Multilin 565 Feeder Management Relay BS 7 E 600 Multilin 5R4 9 Motor Mar agerientKelay Machining Area Network 2 2400 baud EPM3720 AssemblyLineArea Electronic Power Meier 600 Im s 7 550 Muttilin 269 PLC 8080 Motor Relay Programmable Logic Controller X
61. e addresses Check that control power is supplied to all IEDs 13 repeaters If the IED or repeater does not operate whei control power is present contact the GE Resol tior Center at 1 888 GE RESOLV Locate and remove the short or incorrect connection Refer to Section 2 4 Rule 5 for proper RS 485 grounding considerations Recheck the RS 485 netwerk for compliance Improper grounding can cause communication errors Check that the network conforms to Rules through amp regarding RS 485 wiring in Chapter 2 Ensure that each IED s Modbus address corresponds to the address set at the PMCS Power Management Control System Chapter 4 Trouble Shootin Symptom Possible Cause 6 Two or more Modbus IEDs have the same address 1h 3 Nocommunication to l The IEDs or a Repeater any IEDs on one on thatsegment is not commnet segment powered 2 Commnet wires are shorted or improperly connected 3 The network configuration ofthe segment is incorrect 46 Corrective Action Check IEDs for duplicate address assignments Ci amp the address of the affected IED then attempt te communicate with the original address to s e if another IED has that address Check any dual port IEDs to be sure that each 1 port is wired to a separate RS 485 n twork mt HA O Check that control power B supplied to all IEDs 5 3 that two LEDs are lit omeach Repeater indicate 5 control power is pres
62. ed motors e Pumps conveyors compressors fans sawmills mines e Variable frequency drives Protection e Overload 15 selectable cutves e Phase short circuit e Locked rotor mechanical jam e Thermal memoryleckout e Single phase unbalance e Ground fault e Overtemperature thermistor e Additional three RTDs optional e Undercurrent eWhrip alarm auxiliary service outputs e Five switch inputs Monitoring and Metering e Status current temperature display e Process control e Optional analog output e Simulation mode for field testing User Interface e RS 485 Modbus communications e 40 character illuminated display e Six LED indicators e Keypad Features e ac dc control power e Compact size fits most motor starters e NEMAI2 IP53 enclosure 269 Motor Management Relay The 269 Plus Motor Relay provides complete accurate protection for industrial motors and their associated mechanical systems oflering a wide range of protection monitoring and diagnostic features including the following functions with an asterisk require the optional Meter Transducer Module Metering e Currents la Ib Ic e Ground Current e Voltages Va b Vb c Vc a e kW kVAR e Power Factor Power Management Control System E Appendix A IED Descriptions e Running MWHr e Frequency Protection e Overload e Short Circuit e Rapid Trip e Immediate Overload e Current Unbalance e Ground Fault e Overtemperature e Overvoltage
63. els can be onfigufed to reflect any measured parameter and maybe Used to clininate costly transducers Digital ifrputs may be used zc route signals through the SR489 for protection contei or diagnostic functions e Voltage compensated acceleration e Undervoltage overvoltage e Phase differential protection e Underpower for load loss e Out ofstep for synchronous motors e Dual overload curves for two speed motors The user interface includes a 40 character display nd a keypad Twenty two bED indicators on the troei nanel indicate status f the SR489 the generates amc the output relays Aufrontspanel RS 232 port allows cs iccal computer access Two rear panel RS485 poris provide remote aecess Data communication rates rangs irom 300 to 19 200 baud All data can be transmitted sin tiltaneously through the three commwrsations portsto PMCS software e Reduced voltage starting control e Trip coil supervision for breakers an E Seel i Inputs and Outputs e 12 RTDs programmable e Five pre defined and four assignable digital inputs Se a e Four analog inputs lt vaw Six output relays e Four programmable analog outputs Application e Synchronous or induction generators e Primary backup and cogenerator dead Metering and Monitoring Vs A V W var VA PF Hz Wh varh demand 4 Event recorder last 40 Protection and Control Waveform capture 16 cycles e Phase differential s Wear In
64. ent Ifthe IED or Repeater ses not operate when control power 1S present coat 7 Be GE ResolutiomCenter at 1 883 GE RESOLV Locate and remove the short or incorrect conne n Check that the segment conforms to Rules 1 th az in Chapter 2 regarding the number of IEDs perc per commnet segment and wiring requirements arx linditations Power Management Control System Chapter 4 Trouble Shooting _ Symptom br No communication to one or more commnet IEDs t 1308 93 5 Intermittent communi ITT cation to an IED po til age ZC Modbus or commnet Possible Cause l The IED or a Repeater on that segment is not powered The IED is not addressed Two or more IEDs on the Modbus Concentrator have the same address The network configuration is incorrect The IED or a Repeater is not powered or lias inconsistent power Two or more IEDs on the network hav the same address 47 Corrective Action Check that control power is supplied to all IEDs Check that two LEDs are lit on each Repeater indicating that control power is present If the IED orRepeater does not operate when control powenis present contact the GE Resolution Center at 1 888 GFE RESOLV Set the commnet address atth IED and configure the Modbus Concentrator to Tecognize the IED and assign it a Modbus equivalendaddress Enter the Modbus equivalent address into the PMCS Check the Modb s Concentrator and IEDs for dup
65. es the IED addresses When all connections have been made and the IEDs and software are appropriately configured Bill applies power to the system and runs tests to assure that everything is functioning properly If any difficulties are encountered Bill refers to the trouble shooting guide in Chapter 4 Case Three In Case Three GHO Corp has an existing Ethernet network installed and would now like to add power management capabilities with PMCS Once again plant engineer Bill has been given the task of designing and installing this system As before Bill s first task is to choose a platform en which the PMCS host will reside Using the flowcharf in S ction 1 1 he decides that the PMCS will reside on Ethernet requiring one or more Ethernet Gateways t6 communicate with the RS485 networks Next Bill makes a list of the IEDs that GHOGorp needs to support on their PMCS networkMLhe TED list is the same as in Case One e One PLC 90 30 Programmable Logic Controller for process control e One EPM 3720 Meterformenitoring power One Multilin SR745 Transformer Management Relay e One MultilimSR469 Motor Management Relay One Multilin 269 Motor Relay for motor protection e One Multilin 565 Feeder Management Relay for feeder protection The list of communication protocols in Table 1 shows that all the dEDs communicate on Modbus because no commmet TEDs are being used no Modbus Concentrators are needed However because th
66. figure provided Figure 19 and Figure 20 Power Management Control System 2 5 Modbus Wiring Rules Diagrams The Modbus network protocol has wiring rules and limits on the number of IEDs that may be attached This section describes in greater detail the rules you must follow when designing a Modbus network A A rules described herein apply primarily to commercial industrial installations Substation installations will exist in the presence of dangerously elevated ground potential relative to points outside of the station grid as well as large electromagnetic induction fields Additionally large ground faults can elevate substation ground potentials Follow local utility best practices safety procedures to prevent risk of shock electrocution to personnel and damage to equipment that could result in a loss of protection and communications NOTE It is important to take future expandability into consideration when designing a network configuration This is particularly so when the network is near its maximum number of IEDs or maximum cable length Adding IEDs to a network after it has been installed may require rewiring the network CAUTION Wire run distantes mentioned in the configuration rules assume application above grade or in conduit For below grade applications refer ftoQSection 3 1 Wiring Requirements Regardless of which platform is supporting the RS 485 networks Ethernet Gateway RS 485 card
67. gement Relay Multilin SR469 Motor Management Relay Multilin SR489 Generator Management Relay Multilin 565 Feeder Management Relay Multilin 735 Feeder Relay Multilin SR745 Transformer Management Relay Multilin SR750 760 Feeder Management Relay Modbus Protocol Guide PMCS DDE Interface Guide PMCS Network and IED Configurator DDE Server Users Guide PMCS Waveform Capture PMCS Event Logger PMCS Interface Toolkit PMCS Read This Book First installation guide PMCS System fest Simulator GE 7700 Gateway User s Guide 7300 ION Installation and Operation Manual EPM200P48300P 5350P Digital Multifunction Power Monitor Instruction Manual EPM5088R Digital Multifunction Power Monitor Instruction Manual EPM494500 and EPM 96500 Advanced Power Monitor with Power Quality Control Functions Instruction Mantia Refer to the documentation that accompanied the device PR A EAN e mm tarup min ve JR mcm x a NU ET WES RAR A UVA Os Aid m Af dee arm Power Management Control Sysi Appendix B Reference Doc Co 8 A i This page left blank intentionally Power Management Control System ppendix C Special Wiring Considerations This section describes the connections required to wire the following PMCS IEDs into a Modbus RS485 network e GE Fanuc 90 30 and 90 70 PLC s Communications Coprocessor modules e GE Fanuc Micro 90 PLC e DBOconnections to the Connect Tech RS485 card
68. given their own commnet segment In other words if you must put multiple IEDs on a segment it is preferable to put low demand IEDs together on a segment and try to keep high demand IEDs on their own segments Try to distribute the high demand IEDs across the available segments keeping the number of high demand IEDs per segment evenly distributed 2 8 Addressing the IEDs Each IED attached to a PMCS network must have a unique address Prior to installing any wiring you should plan the addresses for the IEDs to avoid any conflicts Keep in mind these important points when assigning network addresses Keep a table of IED names and addresses to avoid conflicts and to help with host configuration Table 5 summarizes Modbus addressing considerations based on the following rules Modbus Concentrator addresses must be in the range of to 32 Modbus native IEDs other than the Concentrator may occupy any address from to 247 Commnet IEDs must have Modbus equivalent addresses in the range of 33 to 247 The host PC does not require an address due to the master slave organization ofthe PMCS Power Management Control System Chapter 2 Network Design this mapping is desired Modbus address 267 commnet N NOTE Per the ElA485 SATO each RS485 address to set at IED For example to set a commnet network supports up to 32 drops or electrical IED to Modbus address 33 the commnet address set drains on the ne
69. hapter 2 Networ Chapter 2 Network Design This section describes how to design a Power Management Control System network on paper so that actual construction and configuration of the network will proceed smoothly You need two things for this exercise a complete list of the IEDs to be networked and a diagram or map of where the IEDs will be located preferably with realistic distances noted so that wiring runs may be kept within the appropriate limits Using the list of IEDs to be networked refer to Table 1 and note which communications protocols are required commnet or Modbus For Modbus IEDs note the communications speed at which each IED operates For IEDs supporting both protocols you will need to decide which protocol will be used Generally it is preferable to use Modbus rather than commnet unless the Modbus network is at or near capacity for physical IEDs When the list of IEDs and the floor plan are in hand proceed to Section 2 1 for network design rules Power Management Control Sys Power Management Control System Chapter 2 Network Design 2 1 Modbus Rules The most basic network configuration for PMCS assumes Table 2 explains the configuration rules for PMCS that the software is running on a host PC supporting one networks based on the Modbus platform Commnet IEDs or more RS485 networks on the Modbus protocol See may be integrated through the Modbus Concentrator see
70. illing Area Multiin 565 i Feeder Management Relay EPM 3720 Main power feed Electronic Power Meter Terminating Resistors Lathe Area EPM3720 Electronic Power Meter Machining Area EPM3720 Assembly Dine Area Electronic Power Meter 550 E x O Multilin 269 200 PLC 90 30 Motor Relay Programmable Logic C onboller GHO Corp Machine Shop network wiring diagram u E Figure 22 Floor layout for Case One Bill s calculates his total cable length at 2300 feet well short of the 4000 foot limit Next Bill checks Table 2 for the Modbus wiring rules Proper termination is required at each end of the network and is provided at the RS485 card by attaching jumpers to the correct pins see RS485 card user manual Ehe appropriate terminating resistors must be used at the opposite end of each RS 485 network per Section 2 4 r le His cable length is well under the 4000 foot limit so Mo repeaters will be needed Because he has only six IEDs to connect only OnefRS485 network is required and thus an RS232 RS 85 converter would do the job However he considers the performance recommendations given in Section 2 6 nd remembering his earlier note about the different baud rates of his Modbus IEDs he decides to distribute the IEDs across four ports of an RS485 network card sp that he can place IEDs with matching baud rates on the same RS485 network The system redesigned for optimum performance is show
71. ils of actual network construction types of wire required termination resistors how tojwire IEDs together Actual connection details are given in the user manuals of each individual IED which you Should refer to directly Chapter 4 offers information on operations and trouble shooting The information provided here will help you get your system up and running and keep it that way Several Appendices offer more detailed descriptions of PMCScompatible IEDs and a list of reference publications Power Management Control System Chapter 1 Introduction Chapter 1 Introduction 1 1 Typical Systems The PMCS software is capable of operating on either of two platforms l PMCS running on a Modbus based host PC or 2 PMCS running on an Ethernet based host PC Determine where the PMCS will be based using the following flowchart Should base my host PC on Modbus or Ethernet ls there an existing Ethernet or plans for a future Ethernet Base PMCS on Modbus Base PMCS on Ethernet After you determine the appropriate basef Ethermet or Modbus for the PMCS software the general metwork architecture will fall into one of the forms illustrated in Figures through 4 These figures offer samples of various network architecture configurations possible with PMCS Protocols Utilized Modbus Commnet Direct Ethernet Modbus Direct via Ethernet As the above table shows Modbus RTU is required in al
72. in one of two fashions The host maybe based directly on the RS485 platform and communicate with the RS485 networks via interface cards Altetmatively the host may reside on an Ethernet metwork talking directly to Ethernet capable IEDs suchyas the EPM 7700 and to Modbus native devices via a separate Modbus to Ethernet converter which supports the RS 85 networks This is described in greatemdetail later in the manual EPM 7700 devices are the exception instead of using Modbus they communicate directly over Ethernet Using This Guide This manual is a simple and direct guide to designing and connecting a power management systemy based on GE s Power Management Control System Pl as r ad the entire manual before attempting to put it into practice Chapter I provides a basic overview of the PMCS typical systems and intelligent eleetronic devices IEDs supported It is imperative that you have a thorough understanding of what the PMGS is and its various components before you read theest of this book Chapter 2 discusses the r les and requirements for designing the network on paper how far apart IEDs may be located addressing the IEDs limits on the number cf IEDs Chaptet 2 also provides several case studies as examples of how to design a PMCS network that will fit your ne ds After studying this chapter and the case studies you should understand how to lay out networks based op PM Chapter 3 explains the deta
73. inal IED on the network Shield Grounding Modbus The RS 485 cable shield must be grounded at only a single point on each RS485 Wire Connect the shieid to the ground terminal at the Ethernet Gateway or RS 425 interface card Gonnett the cable shield to the shicid terminal at each IED on the RS485 network except the Multilin 565 which does not have isolated communicati gt ports Modbus Rule 5 Section 2 4 Commnet The commmet cable shield must be grounded at oni a single point in each commnet segment This is done at the POWER LEADER Modbus Concentrator Each commit port ot the Modbus Concentrator has a ground terminai dnd each commnet segment should be grounded at the port to which it is connected Figure 28 shows a POWER LEADER Modbus Concentrator connected to a series of commnet IEDs The shield of the cable to the downstream IEDs is grounded at the Modbus Concentrator on its internal shield ground terminal strip 3 2 Modbus Commnet Integration The rules regarding the number of IEDs per Modbus Concentrator and wiring distance limits are explained in Chapter 2 The rules expressed in this section are more low level and concern the physical connections of commnet IEDs to a Modbus Concentrator You must foliow these rules to provide for proper shielding and communications Wiring Concerns No commnet segment should have more than one wiring connection at any point such as the Modbus Concentrator a Junctio
74. inputs are provided fer sie differential protection All of the protection elements are self contained and may be enabled as required Tint design makes programming the SR469 a siranie exercise The SR469 has complete monitoring and peter functions An event recorder stores 40 time ana viste stamped records Waveform capture of 16 cycles allows for setting the number of pre trip and post trip cycles recorded The SR469 learns the acceleration time starting current and thermal capacity required during motor starts If motor load during starting is relatively consistent these learned values may be used tc tine tune the acceleration protection The SR46S can also learn the average motor load over a period of time The relay has compete local and remote user inierface capabilities A forty character display keypad ana LEO indicators provide local communication A front pane RS 232 port provides convenient computer access Iwo rear panel RS 485 ports are provided for remcie communication Applications e Medium and large motors e Driven equipment e Motors with high inertial loads A mn Power Management Control System nr nn Voltage terminal fuse and breaker operatiou are monitored and failures reported Protection and Control e Thermal modelbiased with RTD feedback and NES AE REQUENCE Current Four analog inputs may be used for inomtoring vibration or control transducers Ehe four analog output chann
75. int the root causes of problems using tools such as time tagged alarms sequence of events logs and triggered waveform capture conditions Increased safety Provide a centralized source of information reducing the need for physical contact with equipment and shop loor or substation presence Higher productivity Free up maintenance and repair personnel to perform other needed duties hmproved power quality Identify sources of dirty power otherwise invisible and take corrective action Preface to save wear tear and possible damage to critical production equipment and other loads It should come as no surprise that approximately half of all switchgear is now shipped with power management features What began as an Option s fast becoming an absolute necessity for efficient facility management and increased profitability What is PMCS PMCS is the latest P wer Management Control software from GE Industrial Systems robust line of POWER LEADER powemmanagement products PMCS seamlessly integrates with Ah amp comprehensive family of POWER LEADERIEDS ds well as with many new Modbus RTU and Ethernet IE Dsand systems The Power Management Control System supplies the pOwer system information you need to optimize usage and minimize power cost and downtime Its state of the art graphical interface is easy to use with the ability to view systems from both the physical and electrical perspectives Addition
76. ion Relay The 239 relay is designed to fully protect three phase ac motors against conditions that can cause damage dn addition to motor protection the relay has features amp hat can protect associated mechanical equipment give an alarm before damage results from a process malfunction diagnose problems after a fault and allow verification of correct relay operation during routine maintenance Using the Modbus serial communications interface motor starters throughout a plant can be connected to a central control and monitoring system for Continuous monitoring and fast fault diagnosis of a complete process One relay is required per motor starter Setpoimts are entered via the front panel or with computer Status actual values and trouble shooting information are available in clear English from the front panel display A simulation mod and piekup indicator allow testing and verification Of correct operation without requiring a relay test set With the use of the R TD option up to three RTDs can be monitored These can all be in the stator or one in the stator and two in the bearings An optional analog output is also available for direct PLC interface or meteritig of the motor thermal capacity Installimga 239 relay in a motor starter for protection and monitoring of small to medium sized motors will minimize downtime due to process problems 49 Appendix A IED Descriptions Application e Small to medium siz
77. iptors Relay Outputs and Pulse Outputs Max and Min for e Ten Channels of 0 1 or 420m A e KYZ Pulse Outputs For EPM 5200P Analog Outputs MicroVersaTrip C and D and Spectra MicroVersaTrip Trip Units PMCS supports three varieties of this popular line of electronic wip units the Enhanced MicroVersaTrip C Enhanced MicroVersaTrip D and the Spectra MicroVersa Trip MicroVersaTrip trip units act to trip the circuit breaker when one of the following ser defined parameters is exceeded parameters identified by am asterisk are optional features of the trip unit Overcurrent MP Long time e Short time e Instantaneous e High range instantaneous e Ground fault e Zone select Protective relays e Overvoltage e Undervoltage e Overcurrent e Voltage nbal nce e Current unbalance Reverse power The MicroVersaTrip trip unit is also capable of limited metering functions It can measure current and voltage at a circuit breaker and use these to calculate other electrical parameters Information on current is supplied by the breaker s current sensors Voltage information is supplied by the equipment bus potential transformers through voltage conditioners 55 Appendix A IED Descriptions It can measure or calculate values of the fotow i parameters e RMS current phases A B and C e RMS voltage phases A B aftd C e Watts phases A B and C e Volt amperes phases A Brand e Watt hou
78. k His IED list is One PEG 90 30 Programmable Logic Controller for process control Two ERM 3720 Meters and one EPM 7700 for m nitoring power One Multilin 269 Motor Relay for motor protection One Multilin 565 Feeder Management Relay for feeder protection Six Enhanced MicroVersa Trip trip units Three POWER LEADER Meters with waveform capture One POWER LEADER EPM One POWER LEADER MDP Overcurrent Relay One Spectra Electronic Control Module Bill knows that he will need an Ethernet Gateway to connect his Modbus network s to Ethernet and both RS 485 and POWER LEADER Repeaters to reach the remote locations in Facility Two and Facility Three He checks his IED list against the list of communication protocols in Table 1 and notes that some of the IEDs communicate on Modbus and some on commnet so he will also need at least one Modbus Concentrator to support communications with the commnet IEDs The Modbus IEDs do not all communicate at the same speed so more than one RS485 network is required Next Bill checks Tables 2 through 4 for the Modbus Ethernet and commnet wiring rules The EPM 7700 being a native Ethernet device can be connected directly to the Ethernet hub Bill intends to install near his office He ll connect the hub to the corporate LAN to his PC to the 7700 and finally to the Ethernet Gateway Bill realizing the LAN is shared by the entire building installs an Ethernet data line surge Power Manage
79. l instances whether it is being used as a stand alone network supporting commnet IEDs or serving as a slave to an Ethernet based host Figure I presents the Power Management Control System Operating on a Modbus only network Figure 2 shows a Modbus and Ethernet network Figure 3 shows a Modbus commnet network Figure 4 shows an Ethernet Modbtis commnet network demonstrating the integratiomof all Mree protocols Figure 5 shows an example_of an Ethernet based host servicing native Ethernet d vices Modbus devices via the Ethernet Gateway and Comminet devices via the Modbus Concentrator device A NOTE Some types of IEDs must be wired on dedicated private serial network segments one IED per serial Modbus line Figure 2a illustrates this configuration The IEDs that require dedicated Modbus segments are the EPM 96500 EPM 3720 ML POM and EPM 7330 Ethernet Ethernet Modbus Gatewa M ultilin 565 PLC PLC 90 70 90 30 Figure 2 Commercial Ethernet and Modbus network M ultilin 269 Power Management Control System Chapter 1 Introduction jactu LET e u eg Beery LLILILL Eike iei bak wy S posee RI Dect Figure 2a Substation Ethernet and Modbus network Lis LILELI LLL Cemmnet dovr Figure 3 Modbus and commnet network Ethernet erg EE m i nass LU EE ECK EN Modbus Modbus EPM C
80. l ground current input e Three relay outputs e Four digital inputs with pulse counter on one input with maximum pulse count frequency 0 3 Hz e One analog voltage input one analog current output e 80 measured parameters e Waveform capture triggering communication port e Trend logwith one preset log 12 parameters 1200 record capacity triggered by time interval Optional one programmable log 12 parameters 11 520 record capacity 40 days e Event log with 50 records standard one second resolution optional 100 records e Minimum maximumlog with 17 parameters e 7standard speed setpoints trigger event log or relay control The Electronic Power Meter 3710 offers 38 high accuracy realtime measured parameters minima and maxima for 2 parameters and 25 status parameters Power Management Control Syst m All voltage current power and energy readings are true RMS including harmonics Energy readings provide bi directional import export indication No potential transformers PTs are required on the voltage inputs for systems up to 347 Vac line to neutral 600 Vac line to line For higher voltage systems PTs with 120 Vac secondaries may be used The transformer coupled current inputs provide 300 A surge protection and accept CTs with 5 A full scale outputs Electronic Power Meter EPM 3720 The Electronic Power Meter 3720 offers the same capabilities as the EPM 3710 plus many additional measurements and more a
81. licate address assigmments Change the address o the affected IED atthe IED and the Concentrator then attempt to communicate with the original address to see if another IED has that address ger Ee fei Gheckthat the network conforms to the rules in Chapter 2 Check the control power supplied to the IED and to any Repeaters on the network or segment Check the host for duplicate address assignments Change the address of the affected IED then attempt to communicate with the original address to see if another IED has that address amp Power Management Control System O Chapter 4 Trouble Shootin o GS Power Management Control System Overview A power management system consists of a host IED connected via a communication network to metering and protective IEDs PMCS supports up to 256 RS 485 Modbus RTU communication networks to which are attached various power management IEDs Each RS 485 network is capable of supporting up to 247 IEDs on up to 4000 feet of interconnecting shielded twisted pair cable per network The network protocol is peer to peer contention sensing multiple access collision detection CSMACD This appendix lists the features and functions of various IEDs that are compatible with Power Management Control System The title bar above each IED gives its name and its general function This is followed by a brief description of the IED and its features and functions 239 Motor Protect
82. lied or statutory with respect to and ass mes nowkesponsibility for the accuracy completeness sufficiency or usefulness of the information onta ned herein No warrantees of merchantability or fitness for purpose shall apply Copyright 2000 2002 GE Company all rights reserved POWER LEADER MicroVersaTrip Spectra and PowerBreak are trademarks of GE Company Modbus RTU is a registered trademark of AEG Schneider Automation Modbus is registered trademark of Modicon Inc Power Management Control System This manual provides an overview of the network architecture associated with the GE POWER LEADER Power Management Control System PMCS Please read through this guide prior to laying out a PMCS network You must complete the following steps before proceeding with the instructions in this manual l Have instruction manuals on hand for all Intelligent Electronic Devices IEDs to be installed See Appendix B for a list of instruction manuals Complete installation of all system IEDs e All IEDs mounted e All IEDs wired to control power and energized e All IEDs assigned a unique address Refer to the appropriate IED instruction manuals for these procedures Ensure that the PC serving as the Power Management Control System host is operational e The RS485 interface card RS 232 RS 485 converter or Ethernet Card is installed and functioning correctly e Any Ethernet Gateways or Modbus Concent
83. line Machning Area Multilin 565 Power Intake area EPM3720 E Assembly Line Area Modbus Facility 2 north wall e 8 HH 550 Concentrator Multiin 269 PLC 9030 E h d Programmable Logic Contioller nnance MicroVersa Trip RS485 repeater Enhanced MicroVersa I ri Enhanced Micro Versa Frip Enhanced Facility 2 Segment 3 MicroWersa I Ti 05 33 Facility 2 Segment 2 34 35 36 Enhanced Facility 2 Segment 5 37 38 39 4 42 43 44 Terminating Resistor Long range RS485 cable run 3500 feet Facility Two RS485 repeater Terminating Resistor Facility 2 Segment 2 MicroVersa Tri tin Modbus Concentator Enhanced Facility 2 Segment 5 MicroVersa Trip Commnet Segment 1 Segment 5 PLEPM EMVT EMVT EMVT POWER LEAR POWER Facility 2 Segment 3 Segment Spe ge READER Meter na EMVT EMVT MDP POWER LEADER POWER Facility 2 Segment 4 Meter pe Segment3 LEADER Meter A POWER EMVT ECM POWER Facility 2 Segment 5 eT LEADER Meter POWER Facility 2 Segment 1 1o SE Machine Shop LEADER EPM network wiring diagram Figure 24 Floor layout f or Gase Two es ar e edi Relay He must also bear in mind pro er shield grounding ose ae 2 considerations each RS 485 TED grounded at only one Spectra ECM Facility 2 Segment 3 point and no two IED grounds connected Rule 4 Table 9 IED Addresses for Case Two Section 2 4 Bill checks Table 4
84. lled the PMCS Network and IED Configurator The Network and IED Configurator is a Dynamic Data Exchange Server we ll refer to it as the PMCS DDE Server or simply the Server It responds to requests for data from other software packages called clients When the PMCS DDE Server receives a request for data from a client it sends a message out to the appropriate IED requesting the data Each piece of data is called a tag The PMCS DDE Server polls the appropriate tags or blocks of tags from each IED and passes the data back to the client which requested it The Server then begins to monitor that tag if it changes the Server notifies the client that had previously requested the data thus not only is the current request answered but the client is also kept informed of later changes Some power management IEDs are relatively simple and keep track of only a few power characteristics or events they require only a few tags at the DDE Server Mofe sophisticated IEDs keep track of many more pieces of information requiring a greater portion of the DDE Server s resources The limit on the number of IEDs that can be managed by the PMCS varies from network to network and is afunction of the kind and sophistication of the IEDs that the DDE Server is tracking Obviously the more sophisticated the IEDs and the greater the demands they place on thre DDE Server the fewer IEDs that may be managed The host is networked to the power management IEDs
85. lso offers the ability to use modems to reach across wide areas to remote facilities or substations For instance you could use PMCS at a central location to collect power management data from IEDs in a factory warehouse or substation in another state or control the lights air conditioning or protective relays in your facility from across the country An example of this scenario is shown in Figure 5 RS 485 wiring Modbus device RS 232 RS 485 Converter Lr BER RS 232 wiring Radio Frequency transmission Fiber optic connection Leased line or phone line connection RS 232 Wiring RS 485 wiring RS 232 RS 485 Convertef Modbus device Figure 6 Example of femotefoperation using modems 56kbps phone modems radio frequency RF modems and fiber optic modems FOM may be used with PMCS While it is possible to usedial up lines to connect to distant RS 485 networks the vagaries of the phone system and the excessive long distance charges preclude using this as a twenty fourthour a day connection Leased lines dedicated to this purpose provide a viable alternative to a constant long distancextelephone connection For f rther information on using modems for long range operation of PMCS contact your GE sales representative Power Management Control Syst m Chapter 1 Introd ction 1 8 Supported IEDs protocol and maximum communications speed for Modbus based IEDs Commmet IE
86. ment Control Syst m Chapter 2 Network Design protector at the hub on the incoming line from the EPM 7700 IED to shield the rest of the network from potentially damaging transients Because he has only six Modbus IEDs five IEDs and the Modbus Concentrator and 12 commnet IEDs to connect he requires only one RS485 network each RS485 network accommodates up to 31 Modbus IEDs and up to 215 commnet IEDs However because his Modbus IEDs communicate at several different baud rates Bill decides to assign them to different RS485 networks to achieve greater system performance He also notes that each RS485 network must be properly terminated at each end He must keep the RS485 cable length of each RS485 network under 4000 feet unless he uses RS485 repeaters as on Network 3 to span the 3 500 feet to Facility 2 The commnet rules are also easy to comply with Each of the commnet segments must be kept under 1000 feet unless repeaters are used to extend the range of the segments as is required to reach the commnet IEDs in Facility 3 Each commnet segment is limited to four commnet IEDs and no segment may have more than one waveform capture meter POWER LEADER Meter Bill makes sure that his POWER LEADER Meters aredimited to one per segment Ethemet connection to corporate LAN Bil s Office Ethernet connection to EPM 7700 is surge protected RS 485 networks terminated EPM 7700 at Ethernet Gateway esd SS EP M 3720
87. mmercial and industrial gimstallations Substation installations will exist in the presence of dangerously elevated ground potential relative to points outside of thesstati n grid as well as large electromagnetic induction fields Additionallv Jarge ground faults can elevate substation ground potentials Follow local utility best practices and safety procedures to prevent risk of sheckaor electrocution to personnel and damage to equipment that cotild result in a loss of protection and communications CAUTION The recomm nded installation practice is to implement optical fiber for connections between buildings to provide electrical isolation This eliminates harmful ground loops caused by differences in the ground potential between structures CAUTION Datafline surge protection is recommended for network components suchas hubs computers or modems connected to IEDs with copperwireespecially installations where the data communication cable is exposed ie not encased in conduit or runs parallel to power conductors PMCS IEDs are routinely installed in areas exposed to heavy electromagnetic fields EMF which can induce damaging surges in data communication lines Data line surge protection is not required for fiber Optic connections 37 Power Management Control System Chapter 3 Network Wiring and Construction 3 1 Wiring Requirements Fach type of network Ethernet Modbus and commnet has unique wiring requireme
88. mnet requires Modbus Concentrator Modbus Concentrator Communications Modbus RTU 19 2 Kbaud Modbus 19 2 Kbaud or commnet commnet requires Modbus Concentrator POWERLEADER Junction Box Communications commnet requires Modbus Concentrator POWER LEADER Repeater Communication commnet requires Modbus Concentrator PoWer Quality Meter PQM Metering Modbus RTU 19 2 Kbaud on 1 or 2 ports POWER LEADER Electronic Power Meter Metering Power Management Control System Chapter 1 Introduction IED Name Function Communications Protocol Modbus Speed RS 485 Repeater Communications Modbus RTU 19 2 Kbaud 369 Motor Management Relay Metering Control Modbus RTU 19 2 Kbaud EPM 7500 Electronic Power Meter Protection Control Modbus RTU 19 2 Kbaud Motor Manager Il MMII Protection Control Modbus RTU 19 2 Kb ud SR760 Feeder Management Relay Protection Control Modbus RTU 19 2 Kbaud on 1 or 2 ports POWER LEADER MDP Overcurrent Relay Protection Modbus 19 2 Kbaud or commnet commnet requires Modbus Concentrator POWER LEADER Modbus Monitor Monitoring Modbus RTU 19 2 Kbaud on 1 or 2 ports POWER LEADER Meter Metering commnet requires Modbus Concentrator Table 1 IEDs supported by PMCS 2 The POWER LEADER Ethernet Gateway is not listed in Table 1 The Ethernet Gateway is an alternate host for the RS 485 networks used when the PMCS resides on the Ethernet level C
89. n in Figure 23 RS485 networks tenninated at host PC Bif s Office Lathe Area UE 356 Network 4 19 2 kbaud EPM 3720 Electronic Power Meter Mit o Alez i EPM 3720 Electronic Power Meter Network 3 19 2 kbaud 600 Network 1 9600 baud Multilin 565 FeederManagement Relay at main power feed Machining Area m EPM3720 j _ Electronic Power Meter i l 1 b 550 PLC 90 30 Progiammable Logic Contioller Network 2 2400 baud 600 Assembly Line Area Multilin 269 w Motor Relay dE UE VT VUA d Terminating Resist rs GHO Corp Machine Shop rietwoik wiring diagram Figure 23 Redesigned layout for Case One Confident that his new design will provide maximum performance and with his wiring requirements and limits met Bill moves on to select Modbus addresses for the EDs HeshecKSiSection 2 7 and sees that he can assign his ks any Modbus address between 1 and 247 He select addresses and records them for future reference The address chart is shown in Table 8 IED Type Physical Location Modbus Address EPM 3720 Milling 02 08 EPM 3720 Machining 04 __ Multilin 269 Assembly line AA Multilin 565 Power intake area 06 Table 8 IED Addresses for Case One Chapter 3 provides Bill with physical wiring requirements and rules He finds that he ll have to use Belden 3074F cable readily available He also locates the correc terminating resistors
90. n Box or a Repeater You must avoid this condition which is known as looping Examples of correct wiring conditions and various illegal looping conditions are illustrated in Figure 28 through Figure 32 Figure 28 illustrates correct commnet wiring Figure 29 through Figure 32 show illegal looped wiring You can correct looping by removing either of the looped connections indicated by the large Xs in the figure 39 Power Management Control System _ A Chapter 3 Network Wiring and Construction u You must never connect a single commnet segment to the mM d Modbus Concentrator at more than one point or to more B scien ENDER Comet Crnecios than one port on the Modbus Concentrator a Figure 28 represents the correct wiring scheme for a E commnet segment linear one IED to the next A connected to the concentrator at one port only Kamm Figure 29 through Figure 32 show various incorrect wiring schemes commnet segments that are looped and d nonlinear Avoid these wiring situations as they will cause communication errors commnet EIS CI E o Commnet Cb nne chong eu a E Figure 30 Incorrect wiring Looping to two Maar Concentrator commnet ports To Modbus Concentrator POWER LEADER Junction Outlet Box Commnet Segment commnet IED Figure 28 Commnet shield grounding wired correctly Figure 31 Incorrect wiring Looping
91. nerit o Eee c MNT ic Rb ed Using VAIS CT ea CU D 2 Chapter T Introduction ascii ans 3 1 1 Typical EEN e as 3 1 2 Master Slave Organization AA EU 4 1 3 Required Rafale id ei 5 Host Computers ai ee 5 RS 485 Interface Card or RS 232 RS 485 Converter 5 Ethernet Network Card een 5 1 4 Compatibility amp Interconnection with Existing Ethernet Networks 5 1 5 Operation During Power Outage eiert siennes 9 1 6 Time 8 Date Stamping 4 39 99 essere nennen 6 1 7 Remote System Operation Sp 7 sn 6 1 8 Supported EDS mE n KO 1 Chapter 2 Network Design amp 2 9 2 1 Modbus Rules nee ee 10 2 2 Ethernet Configuration Rules 47 sin 11 Table 3 Ethernet configufationules2 3 Ethernet Network Considerations 12 10Base T S efificgions and rules inner 13 10Base F L specifications and rules 13 2 4 Commnet Configuration Rules sn 14 2 5 Modbus Wiring Rules Diagrams em 15 2 6 Commnet Wiring Rules Diagrams nm 19 2 Performance Recommendations iii 21 Tie Ideal NetWork oen b dU Cte Sedans bo celi uec uisa sitate meson a db nn 21 Modbus performance recommendations esee eene nenete neret entntntntn tnnt 21 Commnet performance recommendations
92. ng the use and configuration ofthe Modbus TCP Server Power Management Control System Chapter 2 Network Design And these rules for the Modbus networks attached to the Follow these rules for the host Ethernet Gateways Host PC is based on Ethernet l Ethernet Gateway s must be used to l Each Modbus network supportsup t 31 physical communicate with non Ethernet IEDs Modbus IEDs and up to 247 Modbus addresses This Ethernet capable IEDs may be installed is possible because commnet EDs attached to directly on the Ethernet network at the Modbus Concentrators occupy Modbus addresses same level as the Ethernet Gateway s but are not seen as physical Modbus IEDs 2 The host PC supports up to 64 Ethernet 2 Each Modbus network must be properly terminated Gateways at each end of the network See Section 2 4 3 Each Ethernet Gateway supportsupto 3 The Ethernet Gateway must be located at one end of four independent Modbus networks the Modbus network s The EPM 9450Q 9650Q devices will 4 Maximum cabledength of each Modbus network is support one Modbus network 4000 feet See not s on using repeaters to increase 4 The actual number of IEDs supported this range Section 2 4 Also see the note regarding by the host varies from system to system substati minstallation in Chapter 3 depending on the variety of IEDs used 5 ai fodBus IEDs attached to a single RS 485 and the number of PMCS data tags n twork must comm
93. nts These rules are summarized in Table 13 Further detail is provided following the table Network Wiring Required Ethernet 10Base T or 10Base FL CAT 3 4 or 5 UTP Rated 300V A 600V requirement may be satisfied by applying 600V tubing to the cable Indoors outdoors in conduit above grade Belden 3074F Data Tray 600 V industrial twinax 18 AWG 7X26 or Belden 9841 300 V Communication cable 24 AWG 7X32 or Alpha 6412 300 V Communication cable 24 AWG 7x32 NOTES Use one of the above approved cables that meet the NEC and UL requirements for the application A 600 V requirement may be satisfied by using the Belden 3074F or by applying 600 V tubingito either the Belden 9841 or Alpha 6412 No substitutions are permitted Modbus Indoors outdoors in conduit above grade Belden 8719 600 V shielded instrumentation cable 16 AWG 19X29 Commnet Below grade applications Belden 83702 Each RS 485 networkshould WARNING The National Electrical Code QNEC and all applicable local codes must be followed when installing wiring A Shield Grounding Termination See 1OBase T or 10Base FL wiring standards Check with your LAN administrator See lOBase T or 10Base FL wiring standards Check with your LAN administrator re DUR beta FA terminated at each end of the network The terminator should be a 120 ohm 2 watt resistor 5 See section titlea Termination in this cha
94. o the next up to four IEDs may be wired to the POWER LEADER Junction Box which is then connected to the Modbus Concentrator be observed at all times Although the POWER LEADER Junction Box has terminals to accept up to 12 commnet lines do NOT connect more than four commnet IEDs to a single Junction Box or Modbus Concentrator commnet segment CAUTION The four IED per segment limit must 20 Power Management Control System Chapter 2 Network Design Examples of the use of a POWER LEADER Junction Box with the Modbus Concentrator are provided in Figure 19 and Figure 20 Junction Boxes4are nct counted as IEDs for purposes ofgthe four IED per commnet segment limit Figure 194 an example of a Junction Box used to create a node connecting four commnet IEDs to a4 Modbus Concentrator Figure 20 is an example ota Junction Box with Repeaters observing the four IED per segment limit the two Repeaters and the Junction Box do not count as IEDs to Modbus Concentator Figure 19 Network illustrating commnet Rule 6 Long range commnet segment POWER LEADER Repeater POWER LEADER Repeater to Modbus Concentator ee Junction Box Figure 20 Network illustrating commnet Rule 6 Power Management Control System Chapter 2 Network Design 2 7 Performance Recommendations Although a PMCS network will function as long as all the rules in the previous section are followed you can enh
95. ommnet IED be Wired more than 1000 feet from the Modbus Concentrator or a POWER LEADER Repeater POWER LEADER Repeaters may be used to extend the range of commnet segments A repeater regenerates the commnet signal to its original strength allowing it to travehup to another 1000 feet Long distance segments may be created by placing multiple repeaters adjacent to one another ifi comimnet segment A repeater communicating directly with another repeater may span up to 6000 feet Maximum llowable cable length of a single commnet segment is 12 000 feet which maybe constructed with any allowable combination of repeaters and IEDs For ease and economy of wiring the POWER LEADER Junction Outlet box may be used tO create nodes of commnet IEDs with a common wiring point to be connected to the Modbus concentrator The POWER LEADER Junction Outlet Box allows the interconnection of as many as four shielded twisted pair cables to create this common wiring point For instance rather than a daisy chain of wiring in a lineup from one meter or trip unit to the next up to four IEDs may be wired to the POWER LEADER Junction Outlet Box which is then connected to the Modbus Concentrator Table 4 Commnet IED configuration rules 14 Reference Commnet IED configuration rules Figure Figure 15 Figure 15 No figure provided Figure 19 and Figure 20 Figure 28 Figure 32 Figure 16 Figure 16 Figure 17 Figure 18 No
96. oncentrator 3120 Commnet HHH HH M1 per HH HW Commnet devices Figure 4 Ethernet Modbus and commnet network Ethernet Ef ers ei Hg EPN 150 Ethernet Em 1100 Maida Bates Bad bas EPA Cice tawr EE Carm et Rau THOT 34500 Corera e ideare Figure Ethernet based host services Ethernet Modbus and commnet networks 1 2 Master Slave Organization The PMCS in either a Modbus host or an Ethernet host configuration is a masterslave network The host is considered to be the master with the attached networks of IEDs serving as its slaves This relationship means that the communications are always initiated at the host an IED will not speak without being asked to The master requests information the slave replies The PMCS DDE Server receives a request from a client application for some data perhaps a relay waveform capture The Server routes the request to the correct IED the IED replies to the Server and the Server passes the information back to the client that originally requested it For further details refer to the PMCS Network and Device Configurator DDE Server User s Guide GEH 6510 Power Management Control System 1 3 Required Hardware Several pieces of hardware are required to build a network based on PMCS They are the host computer and the network interface card each of which is described below Once the host computer is operating and its interface card is installed it is time to
97. pter for specific details on Conne i Tech RS485 card and Ethernet Gateway be grounded at the hosttand at the RS485 OU T port of each IED with no continuity between wireSegment shields See Section 2 4 rule 4 N A notermination is needed on commnet segments Fach commnet segment s cable shield must be grounded at the Modbus Concentrator at the port to which it is connected Table 13 Wiring requirements 5 Belden 83702 is rated for direct burial and air plenum non conduit applications but the length limits for this cable are two thirds of the lengths specifiedin the configuration rules of Chapter 2 38 Power Management Control System Chapter 3 Network Wiring and Construction Type of Wire Ethernet lOBase T applications may use any appropriate Category 3 4 or 5 UIP cable provided it is rated at least 300V Category 3 cable is sufficient for 10 Mbps applications such as PMCS Category 5 cable supports 100 Mbps network applications Category 4 cable is not widely available having been superseded by Category 5 cable in the marketplace Any of these cables may be used in 600 volt applications by applying 600V tubing to the cable Modbus Belden 9841 or Alpha 6412 may be used for applications under 300 V that are indoors or outdoors in conduit above grade These cables may be also be used for 600 V requirements by applying 600 V tubing to them Belden P 3074F may be used for applications greate
98. r 90 30 Medium Voltage Motor Control Center 7 Multilin 565 Feeder Management Relay 005 Lineup 5 EPM 5300P 200 Substation EPM 5200P 905 EPM 96500 210 EPM 7300 215 EPM 7330 220 EPM 7330 225 Table 7 IED addressing scheme for Figure 21 24 Power Management Control System 2 9 Multiple RS 485 Networks Addressing PMCS supports up to 256 independent Modbus networks Regardless of how many RS485 networks are connected the addressing concepts regarding multiple RS485 networks remain the same Each RS485 network is addressed independently of the others Thus Network 1 may have an IED with Modbus address 20 and Network 2 may have an IED with Modbus address 20 without conflict The PMCS will be aware that they are different IEDs much as the postal system delivering mail realizes that 177 Mulberry Lane in Town A is a different address than 17 Mulberry Lane in Town B 2 10 System Expansion Whenever new IEDs are added to the network be sure to observe these points Followthe proper installation procedures Ensurethat the system configuration rules have been followed All new IEDs are shipped with the same default address To avoid conflicts change the address of each new IED immediately upon installation to an unoccupied address in the PMCS networks 2 11 Case Studies Five case studies are provided as examples o how to design a network based on PMCS In each case A fictitious company c
99. r than 300 V which are indoors or outdoors in conduit above grade Commnet Belden M8719 shielded instrumentation cable 16 AWG wire shielded twisted pair is recommended for commnet wiring for applications indoors or outdoors in conduit above grade For below grade applications Belden 83702 shielded 16 AWG cable is recommended Belden 83702 is rated f r direct burial and air plenum nonconduit applications butathe length limits for this cable are two thirds of the lengths specified iin the configuration rules of Section 2 1 For example amp network segment connecting up to four IEDs may h ve agotal cable length of no more than 667 feet of Belden 83702 versus the 1000 foot limit on total cable length fomBelden 8719 Termination RS 485 cables must be terminatedeat each end of the network with a 120 ohm 2 watt 5 tolerance resistor A IMPORTAN ANOTE FOR CONNECT TECH CARD SERS The Connect Tech RS 485 card recommended for use with PMCS systems requires a 600 ohm rather than a 120 ohm resistor Use the 600 ohm resistor at the Connect Tech card only The other end of the Modbus networks should be terminated with the usual 120 ohm resistor IMPORTANT NOTE FOR ETHERNET GATEWAY USERS The POWER LEADER Ethernet Gateway provides internal termination A for its four RS485 ports No terminating resistor is needed at the POWER LEADER Ethernet Gateway See Figure 9for an example of the cablegru terminates at the f
100. r the troubleshooting procedure 4 4 Equipment Trouble Shooting To determine if a section of equipment is causing network problems disconnect it from the network then refer te the appropriate user manual for the trouble shooting procedure 4 5 Product Service Procedure Call the GE Resolution Center at 1 888 GE RESOLV if you have any additional questions or problems 43 Power Management Control System a Chapter 4 Trouble Shootin Es 4 6 Trouble Shooting Guide Symptom 4 Nocommunication to any IEDs on the network RS 485 host only Ethernet host only Ethernet host only EPM 7700 only Possible Cause Host PC not powered Windows 2000 SP2 not running correctly PMCS not properly installed or not properly configured with IED addresses and communication settings DDE Server not running RS 485 interface installed incorrectly or not functioning Ethernet network down or improperly c nneeted EthernebG tewa not powered n t connected toEthemet or RS 485 ports or connected but improperly configured Device communication settings are incorrect Corrective Action Check that the host PC has control power and is running correctly no PC error conditions exist j Check that Windows 2000 SP2 is properly installed anc running correctly no crashes or system lock ups Check that PMCS is correetly installed and running and has been configuredgwith the Modbus a
101. rating on an Ethernet network If PMCS is running on an Ethernet based PC an Ethernet Gateway is required to communicate with the attached Modbus network s See Figure 2 for an example of this configuration Recently IEDs with built in Ethernet support have begun to become available PMCS is also capable of supporting these devices Examples of such devices are the EPM 7700 meter and EPM 9450Q 96500 meters These devices reside on the Ethernet network at the same level as the Ethernet Gateway Table 3 explains the configuration rules for PMCS networks based on the Ethernet platform Commnet IEDs may be integrated through the Modbus Concentrator See Table 4 for commnet wiring rules 11 EPM 7700 devices require a separat network configuration beyond connectinggthe devices to the Ethernet LAN Please refer to th following PMCS technical documentation for complete network configuration rules and guidelines GEH 6514 PMCS Read This BookFirst Refer to the section titled Configuring the EPM 7700 Device Network DEH 40035 GE 7700 Gateway Users Guide Refer to the section titled EPM 7700 Network Configuration EPM9450Q and ERM9650Q devices require separate network config ration beyond connecting the devices to the Ethernet LAN Refer to the instruction manuals of these devices andst6 the sections titled Internal Network Option Also Tefer to DEH 6510 DDE Server User s Guide Refer tothe sections describi
102. rators are installed and functioning correctly e Windows 2000 SP2 is installed and functioning correctly The Power Management Control System software is installed and properly configured Getting Started e e equipment that could result in a loss of protection and communications WARNING Where personnel or equipment safety is involved do not rely excl sivelv on information reported by the Power Management Control System Opany power management equipment ALWAYS confirm the status and safety of electrical power equipment in person by conventional test IF Dssbefore operating energizing or working on such equipment WARNING Network wiring and grounding rules described herein apply primarily to commercial industrial installations Substation installations will exist in the presence of dangerously elevated ground potential relative to points outside of the station grid as well as large electromagnetic induction fields Additionally large ground faults can elevate substation ground potentials Follow local utility best practices safety procedures to prevent risk of shock electrocution to personnel and damage to El Power Management Control System Power Management Control System Table of Contents Preface Welcome to PMCS osados 1 What is Power Management ss mme 1 Benefits of Power Management fl ege e esee enn 1 Wiiat ls PNIS sonet nnper erunt nas Em itu aim tini e PR ass 1 How Does PMCS E Rost aD hiec To
103. rective Action Sen A a e ma Refer to the following PMCS technical documentation l DEH 40035 GE 7700 Gateway sersGuidc section titled EPM 7700 Network Configu 3 on 2 GEH 6514 the PMCS Read Lhis Book Firsi sector titled Configuring the EPM 7700 Device Neiwsik EPM 9450Q 9650Q 10 Device communication with Ethernet option settings are incorrect only Using the EPM 9000 Series Genittnunicator software check device profile 1 A device IP address Jost address 2 Device PopSet t o30 3 Asubnet mask network dependent option 4 Adefault garewav optional required to communicate between networks EPM 9450Q 96500 11 Device communication with Ethernet option settings are incorrect and acting asan Ethernet Gateway only 2 Nocommunication to l The IED ora repeater is one or more Modbus not powered IEDs some IEDs OE 2 RS 485 wiring is shorted or improperly connected 9 An RS 485 shield has been grounded incorrectly 4 The network configuration is incorrect 5 The IED is not addressed 45 A4 Cheek thatthe Ethernet Gateway Port of the FPM 9450079650Q Gateway is wired to each Modbus deviez Port l Using the EPM 9000 Series Communicator sofa check device profiles 1l The pass through baud rate setting of EPM 94500 9650Q Gateway must match the baud rates of all Modbus devices 2 AliModbus devices must have uniqu
104. rs At ranges over 1000 feet commnet signals become degraded and Communication errors may result Modbus Concentrator Max length of a commnetsegment with one Repeater lt 2000 feet Figure 17 Network illustrating commnet Rule 3 4 Long distance cable runs may be built by placing two Repeaters adjacent to one another in the segment A pair of adjacent Repeaters has a range of up to 6000 feet of cable Figure 18 illustrates this rule Modbus Concentator 1000 ft Max length of a commnet segment with two Repeaters lt 8000 feet Max length of a commnet segment with three Repeaters lt 12000 feet note only one other IED may be used on a commnet segment with three repeaters Figure 18 Network illustrating commnet Rule 4 5 The maximum allowable cable length of a single com nnet segment is 12 000 feet This may be achieved with any allowable combination of Repeaters and IEDs For ease of wiring the POWER LEADER Junction Outlet Box may be used to create nodes of commnet IEDs with a common wiring point to be connected to the Modbus concentrator The POWER LEADER Junction Outlet Box allows the interconnection of as many as four shielded twisted pair cables to create this common wiring point This can be of great help in economizing on wiring and offering greater flexibility in network design For instance rather than a daisy chain of the wiring in a lineup from one meter or trip unit t
105. rs phases A B and C e Frequency e Power factor Modbus Concentrator ator e cu Tri gt The POWER BEADER Modbus Conceutrator PMCS to communicate with POWER LEADE commmneb EDs The Modbus Concentrator is aii Ke 485 native IED that collects data from up io 32 attaches POWER LEADER commnet IEDs and conusaricales this data to the PMCS across the POWER MALIK x Modbus eommunication network In this resceci the POWER LEADER Modbus Concentraicr c sexyes as the host IED on up to eight commet nepar while acting as a slave to the master lt l ive Mah network T peels us FORE LLET a The major functions provided by the POWER 1 EDER Modbus Concentrator are e Configuration of commnet IEDs e Data collection from commnet IEDs e Processing of metering data e Demand and Energy calculations e Processing of events trips and alarms e Executions of commands upon host reques Electronic Power Meter PLEPM The POWER LEADER Electronic Power Meter PLEPM is a full function electronic meter with optional pulse initiation The PLEPM continously monitors specified line characteristics and shows the desired functions and calculated values on a two line back lit liquid crystal display on the front panel The PLEPM monitors and stores values for each current and voltage input From these values i calculates RMS voltage RMS current real and reactive power and other time based functions Data are then sent autom
106. s Figure 11 illustrates this rule RS 485 IEDs Total Cable Length lt 4000 feet 300 ft Figure 11 Network illustrating Modbus Rule 1500 ft 8 RS 485 repeaters may be used to extend the range beyond 4000 feet A single RS 485qrepeater may be used to provide a 4000 foot extension and each additional repeater in a s quence extends the range by another 4000 feet Figure l2illustrates this rule 700 ft RS 485 Repeaters With 2 Repeaters Total Cable Length lt 8000 feet 200 ft Figure 12 Network illustrating Modbus Rule 8 2500 ft 9 There may be no more than two RS 485 repeaters between any two RS 485 IEDs Figure 3 illustrates this rule A CO Correct Maximum two repeaters between RS 485 IECs CC Incorrect m or than 2 repeaters between RS 485 IEC Figure 13 Network illustrating Modtus Rule 9 A NOTE ON DUAL PORT RS 485 EDS Severaliof the Multilin power management IEDs offer two RS 485 ports on the same IED Do not connect both RS 485 ports to a PMCS network The same data are available from both RS485 ports and will cause conflicts if the PMCS attempts to access both ports simultaneously However the Modbus Monitor s wiring scheme is slightly different from the Multilin scheme The dual port version of the POWER LEADER Modbus Monitor MUST be connected to two separate RS 485 networks See Rule 10 for details 10 Modbus Monitors dual port version may not be
107. s grounds connected Rule 4 Section 2 4 The Multilin 565 special grounding considerations are also taken into account see Chapters 2 and 3 Bill assigns a Modbus address to each IED He then sets communication speeds and functional and protective parameters a cording to the instructions in each user manual Bill installs the PMCS software at the host PC and configures WED addresses at the host to match the addresses assigned to each IED on the network Gonfisufation files for the Modbus Monitors are downloaded to the units or created using the Monitov s Create from PMCS feature see DEH 027 for details When all connections have been made and the IEDs and software are appropriately configured Bill applies power to the system and runs tests to assure that everything is functioning properly If any difficulties are encountered Bill refers to the troubleshooting guide in Chapter 4 34 amp Power Management Control System Chapter 2 Network Desic e D This page left blank intenti Power Management Control System Chapter 3 Network Wiring and Construction Chapter 3 Network Wiring and Construction Once the network has been carefully laid out on paper and IED addresses have been planned you need to check the following wiring requirements before beginning assembly of the system WARNING Network wiring and grounding rulestdescribed herein apply primarily to co
108. s Dynamic CT ratio mismatch correction monitors the on load tap position and automatically corrects for CTI ratio mismatch FlexLogic allows PLC style equations based on logic inputs and protection elements to be assigned to any of the SR745 outputs Simulation mode provides a powerful testing and simulation feature This provides the ability to test the relay operation based on captured Or computer generated waveform data These dataan be onverted to a digitized format and download d int sthe SR745 s simulation buffer for playback The SR745 also provides its own Waveform capture function which records waveform data for faults inrush or alarm conditions The autoconfiguration function eliminates the need for any special CT confections by having all CTs connected in wye Application e Small medium and large power transformers Protection e Percent differential e Adaptive harmonic restraint e Multiple overcurrent elements e Adaptive time O C elements e Underfrequency e Frequency rate of change e Overexcitation e Multiple setpoint groups Metering and Monitoring e Allcurrents e THD and harmonics e Demand e Percent of rateddoad e Harmonic analysis e Tap position e Ambient temperature e Andlog transducer input e Waveformeapture and playback e Simulation mode Inputs Outputs o Three analog transducer inputs e 1 6digital logic inputs e Seven analog transducer outputs e Nine con
109. s on Modbus connected to several RS 485 Modbus segments The IED list is One EPM 7300 Electronic Power Meter One Multilin SR745 Transformer Management Relay One Multilin SR760 Feeder Management Relay One Multilin 269 Motor Relay One Multilin 565 Feeder Management Relay Two dual port RS 485 Modbus Monitors to serve as remote viewing stations for the IEDs on segments 3 and 4 One Modbus Concentrator to support the comm et IEDs below One POWER LEADER Electronic Power Meter One Spectra Electronic Control Module One Enhanced MicroVersaTrip C tripunit He checks the list of communication prot6ecols n Table 1 and notes that most of his IEDs communicate on Modbus but because he wants to use severalommnet IEDs in the Machining area he ll need a Modbus Goncentrator As well the Modbus IEDs commatimicate at different baud rates and Bill makes a note that th y should be placed on separate RS485 networks for impxoved performance He decides to use four RS485 networks supported by the recommended communications card at the host PC Bill now turns 40 his fl00x layout to see just where the wiring could be rum andghow many feet of cable will be needed He maps where his IEDs must be located and where the host PC will sit Next he measures the cable runs required to connect the IEDs to the host PC keeping in mind that the wixing rules require him to daisy chain the IEDs onfeach RS485 network one after another Bill calcul
110. segments for IEDs records their commnet addresses and assigns a Modbus equivalent address so that communication from the PMCS will be directed to the correct IED Bill configures the Ethernet Gateway assigning a unique IP network address after he checks with the IAN administrator to determine which IP addresses are available He then sets the serial port communication parameters for each Gateway port after referring to document GEH 6505 Ethernet Gateway Users Guide for information on configuring the Gateway serial ports Dill assigns a unique IP address to the EPM 7700 meter s Xpress Card based on information in the EPM 7700 user documentation and the addresses he received from the LAN administrator He installs the PMCS software at the host PC and configures the IED addresses in the DDE server Next Dill modifies the 7700 network configuration file for the EPM 32 Power Management Control System Chapter 2 Network Design 7700 according to the GE 7700 Gateway User s Guide DEH 40035 When all connections have been made and the IEDs and software are appropriately configured Bill applies power to the system and runs tests to assure that everything is functioning properly If any difficulties are encountered he refers to the trouble shooting guide in Chapter 4 Case Five In this case study the circumstances are similar to those in Case One with the addition of several RS485 dual port IEDs The PMCS host reside
111. shield at this IED Instead connect the shield of the incoming RS485 cable to the shield of the outgoing RS485 cable skipping the Multilin 565 CAUTION Improper grounding may create a RS 485 Host RS 485card RS 232 RS 485 converter Multiple Serial Port or Ethernet Gateway RS 485 poit Shield connected at host Network Connections 420 ohm terminating resistor Connect TechRS 485 cards require a 600 ohm resistoi in place of the 120 ohm terminating resistor Two wire twisted shielded pair cable RS 485 IED 4 Shield n ot connected at first IED RS 485 N Shield connected at first IED RS 485 OUT Shieldnot connected atlED Loe RS 485 IN RS 485 IED 2 NY Shield connected atlED RS 485 OUT Shield not connected atlED P adn IN RS 485 IED 31 120 ohm terminating resistor _ Figure 9 Network illustrating Modbus Rules 4 and 5 16 6 A single RS485 network may have up to 215 commnet IEDs attached to it via POWER LEADER Modbus Concentrators Figure 10 illustrates this rule Power Management Control System Chapter 2 Network Design RS 4851EDs 31 Max Modbus Concentrator Commnet IEDs up to 32 per Modbus Concentrator 215 total per RS 485 network Figure 10 Network illustrating Modbus Rule 6 7 A single RS 485 network may have no more than 4000 feet of cable total cable length not distance between IED
112. sibility display e Customizable display of data e View the event log of the previous 50 events with time and date stamp e View PMCS log displays last 50 events legged by the PMCS Event Logger regardless of which network the events happened on e Universal power supply accepts 100 240 Vac 125 250 Vdc POWER LEADER Repeater The POWER LEADER Repeater regenerates signals on long commnet segments and allows wfe range of the commnet segment to be extended beyond the 1000 foot limit See Section 2 1 for configuration rules to create extended range commnetsegments Power Quality Meter PQM When continuous fnonit ring of a three phase system is required the Power Qnality Meter POM is an ideal choice It provides metering for current voltage real and reactive power energy use cost of power power factor and frequency Programmable setpoints and four assignable output relays allow control functions to be addedwfor specific applications These include basic alarmnOn over undercurrent or voltage unbalance demand based load shedding and capacitor power factor correction control More complex control is 57 Appendix A IED Descriptions possible using the four switch inputs which also can ve used for status such as breaker open or closed and flow information The POM is a data gathering IED for a plant automation system that inteBratessproc ss instrument and electrical requirements Allbm nitored values are a
113. sn easy one He must choose a platform on which the PMGS host will reside Using the flowchart in Section l I3 he makes his decision There is no existing Ethernetinetwork in his facility nor are there any plans for ore Bill chooses Modbus as his basic platform for the PMCS Next Bill makes a list of the IEDs that GHO Corp wants to include on their PMCS network One PLC 90 30 Programmable Logic Controller for process control Three EPM 3720 Meters for monitoring power One Multilin 269 Motor Relay for motor protection One Multilin 565 Feeder Management Relay for feeder protection He checks the list of communications protocols in Table 1 and notes that all of the IEDs communicate on Modbus because no commnet IEDs are being used no Modbus Concentrators are needed The Modbus IEDs communicate at different baud rates though and Bill makes a note that they should be placed on separate RS 485 networks for improved performance Bill now turns to his floor layout to see just where the wiring could be run and how many feet of cable will be needed He maps where his IEDs must be located and where the host PC will sit He measures the cable runs required to connect the IEDs to the host PC keeping in mind that the wiring rules require him to daisy chain the IEDs on each RS485 network one after another His floor layout is shown in Figure 22 Power Management Control System Chapter 2 Network Design Bif s Office M
114. t the COMM and COMM lines are shorted somewhere on that segment Refer to the trouble shooting section of the Repeater manual if both green LEDs are not lit If all Repeaters on the commnet segment show two green LEDs when connected to the commnet cable the error is probably caused by one of the IEDs on the segment Connect the IEDs one at agtime establishing communication with each one Refer fo the IED instruction manuals for proceduresffor communicating with each IED Chapter 4 Trouble Shooting ee en 4 2 Host Trouble Shooting If the procedure for communication netwo k trouble shooting does not isolate the problem use the following procedure to determine if the host is at faut 1 If the host is at fault it probably will not be able to communicate with any TED OIf this host can communicate with one Or more IEDs return to Section 4 1 2 Check that poweRis connected to the network interface cardgingthe host PC if you are using an Ethernet Gateway Make sure that its control power is connected Ensure that the Ethernet cetwork interface Cardin the Host PC is properly conocied and seated n its expansion slot 3 If using amRS485 interface card s check that the card s is seated properly in its slot and Lat the proper terminating resistors are applied 4 34ED Trouble Shooting Fo determine if an IED is causing network probems disconnect it from the network then refer ts the appropriate user manual fo
115. t the final IED and the host Ethernet Gateway While wiring he follows the RS 485 cable shield wiring rules explained n Section 2 4 rule 4 Bill then assigns local Modbus addresses to the IEDs_and sets communication speeds and parameters according to the instructions in each user manual He installs the PMCS software at the host PC and configures the IED addresses to match the addresses Set at the IEDs When all connections have been made nd the IEDs and software are appropriately configured Bal applies power to the system and runs tests to assure that everything is functioning properly If any difficulties are encountefed he refers to the trouble shooting guide in Chapter Modbus Address Assembly Line Case Four In Case Four GHO Corp wishes to create a power management system that will interconnect with their existing corporate Ethernet They Would like the capabilities of both Modbus and commmet IEDs and plan to integrate three separate facilities sing Repeaters GHO Corp plant engineer Bill has been given the task of designing and installing this system As in the previous cases Bill s firstytask is to choose a platform on which the PMCS h st will reside GHO Corp requires Ethernet integrafion 8o the flowchart in Section 1 1 determines that the BMCS will reside on Ethernet requiring an Ethernef Gateway Next Bill mak sva list of the IEDs that GHO Corp wishes to support on their PMCS networ
116. te parity stop bits e he TED s address has been assigned TheSame address is not assigned to another IED e he network connections are good Ifthe network has no repeaters go to step 8 For commnet segments with Repeaters you cau localize the problem by checking all repeaters for red LEDs which indicate disabled segments Each repeater should have one LED lit on each input and output either red or green If more than one LED is lit or if none of the LEDs are lit refer to the troubleshooting section of the repeater manual NOTE If other IEDs are connected to the segment the status LEDs may glow dimly when the cables are connected even though the POWERLEADER Repeater is not powered Power Management Control Syst m 8 When the error has been localized to one RS485 10 11 network commnet segment check that control power is available to every IED requiring it If control power to certain IEDs is disconnected or turned off it may disable communications on that segment If all the IEDs on the network or segment have control power and the error persists disconnect all the IEDs except the Repeaters If practical disconnect the IEDs one at a time to see which IED is causing the error If it is not possible to test communication as each IED is disconnected check the Repeaters with all other IEDs disconnected Both green LEDs should be lit on every Repeater If a red LED is lit it may indicate tha
117. tection with programmable delay e Phase and ground current measurement e Phase and ground current metering e Operating time and fault current of the last trip POWER LEADER Meter The POWER LEADER Meter measures currents and voltages in a single compartment and uses these tc calculate other system parameters The current inputs are taken from standard 5 A CT secondaries while the voltage inputs are taken from 120 Vac PT secondaries The following parameters can be viewed e RMS current e RMS voltage e Watts e VARs e Volt amps e Power Factor e Watt hours e VAR hours e Current demand e Peak current e Watts demand e Peak watts demand e Frequency e Harmonic distortion Power Management Control System e Waveform capture These parameters can also be viewed at the host computer Requests may be entered locally or from the host gt The Meter has two relay outputs that can be programmed to provide IED protection POWER LEADER Modbus Monitor The POWER LEADER Modbus Monitor provides a central station for viewing metering and status information collected from multiple remote power management IEDs The Monitor may be mounted in equipment or independently and offers two RS 485 ports for connection to one or two separate RS 485 networks Up to two Modbus Monitors may be installed on a single RS 485 network providing multiple locations to view data Features e Easy to use menu driven user interface e Large high vi
118. ter backlit LCD display settings functions programming and annunciation e T hrough the door programming and display e Simplified keypad entry menu driven system is designed for ease of use for 51 Appendix A IED Descriptions e Built in diagnostics with displays for ease of troubleshooting e Passcode protected to limit user access e Timer countdown display4or ease of operation e User settings unaffected bygpower outages e Wide range of accessories 44d configurations available for the most demanding applications Design and Construction Feat res e Close differential three phase under voltage sensing of th amp normal source factory standard setting 90 mpickup 80 dropout adjustable under frequencysensing of the normal source factory setting 95 pickup adjustable e Voltage and frequency sensing the emergency source factory standard setting 9076 pickup voltage 95 pickup frequency a justable Testswitch fast test load no load to simulate normal source failure automatically bypassed Should the emergency source fail e Type enclosure is standard also available in open style or Types 3R 4 or 12 e Double throw mechanically contactor mechanism e Electrically operated mechanically held e Designed emergency and applications ot interlocked for standby Generator PLC Series 90 70 The Generator PLC is configured in such a way that Master PLC has all the information of ali the
119. terface e 100 stator ground rw 22 front panel LED indicators e Ground overcurrent Anti motoring reverse power Loss of field Negative sequence overcurrent Instantaneous overcurrent startup Voltage restrained phase overcurrent Overexcitation Volts Hz Undervoltage and overvoltage Voltage phase reversal Underfrequency and overfrequency Stator overtemperature e 40 character display _ Control keys and numeric keypad e RS232 and two RS485 ports SR489 Generator Management R lay The SR489 Generator Management Relay provides economical protection metering amd monitoring functions It can be used ass primary or backup e _ protection on synchronous or induttion generators of 25 50 or 60 Hz It may be applied mm primary backup and cogenerator applications The SR489 offers comprehensive generator protection features These Afeaturessinclude phase differential overcurrents 100 stator ground ground overcurrent negative overeurrent voltage restrained phase over gand undervoltage over and underfrequency and reverse power To accommodate sequence synchronous generators the protection features include overexcitation loss of field and inadvertent generator energization Monitoring functions include RMS current negative sequence current voltage three phase power and temperature via 12 RTD inputs 59 Bearing overtemperature vibration Inadvertent generator energization
120. tmotor starters in GE 8000 Line Motor Control Centers It works in series with a Spectra RMS Mag4Break Motor Circuit Protector and a contactor The ECM provides the following functions e Electronic overload protection in coordination with Motor Circuit Protector e User selectable current phase loss protection e Userselectable phase unbalance protection e Userselectable equipment ground fault Brotection Control voltage undervoltage contactor coil 58 e Current metering via commnet e Full load amps adjustment of 33 100 of breaker rating plug value e NEC Relay Class 10 20 30 selection e Contact for monitoring trip status SR469 Motor Management Relay The SR469 Motor Management Relay is inicz rov protection and managefnent OP medium zz mowe horsepower motors and driven equipmemi Moi protection fault diagnostics power meten suti communication functions have been integral Zei one complete economical draw out package The SR469 has integrated every protection feature ti could be considered a benchmark for medii a large fnotor protection This high degree of integrato allows forstandardization on one motorproect n relay regardless of application THe heart of the SR469 is the thermal med i addition to the current protection elements TT inPutsiare provided for stator and bearing temperstur protection The addition of VT inputs Ee Fe voltage and power protection elements Piase differential CT
121. tor Machining 2 RS485 Port A Multilin SR750 Milling area Feeder Management Relay 4 EPM 3720 Milling area 02 Modbus Monitor Lathe area 03 1 RS485 Port B Modbus Monitor 2 RS 485 Port B Machining area Modbus Machining area Concentrator EMVT C trip unit Machining area 33 4 4 Spectra ECM Machining area 34 4 POWER Machining area 35 LEADER EPM Table 12 IED Addresses for Case Five Chapter 3 provides Bill with physical wiring requirements and rules He ll use Belden 3074F cable readily available He also locates the correct terminating resistors at both ends of eaclitRS 485 network He installsuheNEDs according to the instructions in each IED s usex manual He then makes connections to the RS 485 communications cable in daisy chain fashion one IED to the next terminated at both ends of each RS 485 network double checking his wiring against the example provided in Section 2 4 Since several of his MultilinTEDs have two ports he is careful to connect ofily one RS 485 port per IED The Modbus Monitors are also RS 485 dual port but Bill carefully follows the wiring iustf ctions to correctly connect them to the RS 485metworks The A port of each Monitor is connected to one RS 485 network and the B port of each is connected taanother network He must also bear in mind proper shield grounding considerations each RS 485 EDegrounded at only one point and no two IED
122. trol outputs Additional Features e FlexLogic programmable logic e Auto configuration vector group compensation e Dynamic CT ratio mismatch correction e RS 232 and RS485 ports e Draw out construction SR750 Feeder Management Relay The SR750 Feeder Management Relay is a microprocessor based relay intended for the management and primary protection of distribution feeders It can also be used for management and backup protection of busses transformers and power lines The relay tracks the power system frequency and adjusts the sampling rate to maintain accuracy at all times The hs is sapinel debna as an economical feeder management system incorporating the requirements for protection control metering and both local and remote user interfaces in one assembly This eliminates the need for expensive discrete components Complete overcurrent protection is provided This includes phase neutral ground and negativesequence Power Management Control System protection for time overcurrent hi set overcurrent lo set overcurrent and directional control Overvoltage undervoltage and underfrequency functions each have two independent stages With 14 programmable logic inputs and seven outputs the SR750 can be easily configured for specific applications The relay has extensive monitoring and metering functions It has an internal memory that allows it to record the last 100 events the last 10 faults and a total of 2
123. tthe two cables to the B amp B 486FWTW as shown in Figures C Fand C 2 120 ohm a eine resistor y 2 wire cable RS 232to RS 485 Converter Last device RS 232to RS 485 Converter u 4 wire cable Series 90 Micro RTU port Figure C 1 RS 485 two wire Modbus network HOST PC RS 232 port PMCS Modbus Network B amp B 485FWTW Micro 0 RTL Port 2 wire RS 485 2 4 wire converter 4 wire RS 422 Data A Data A 3RD A LI gt Cl 10 RD A Data B 4 amp 3J Data 8 16 RD B Dess 11 RD B 21D A 9 4 c 12 SD A M TD B D 13 SD B 7 Signal Ground 1 frame Ground O Signal Ground Shield Gs Frame Ground 12 V dc O Power O 12 Vdc 6 screw terminals D Signal Ground Y 1 Shield GRIS A A 8 CTS B 4 14 RTS B 12 Vdc 15 CIS A 12 Vde 25 pin male 15 pin female D style connector D style connector qum n HB RR m A jr v e Figure C 2 Modbus network and Series 90 Micro RTU Port Wiring pa hy Power Management Control System Appendix C Special Wiring Considerations Shield 5 N NOTE The RTU port ground signal connection is not required but may be connected if needed Apply heat shrink tape or jacket over the connector for A one to two foot length should be enough for protection the four wire RTU cable with 25 pin female and 15 pin male D connectors between the
124. twork However the Ethernet at the IED must be 300 Table 6 dlhustrates address Gateway or RS485 interface card counts as one mapping drop Thus only 31 other IEDs may be attached to each RS485 network even though 32 Modbus addresses are available for use Also unlike For Modbus Address Set commnet TED Address to commnet s POWER LEADER Repeaters RS485 33 300 repeaters are counted as IEDs because although 34 30 they have no Modbus address they do act as a 35 302 drop on the network 246 513 m Appropriate Usage Supported IEDs 247 514 HERE Table 6 Modbuis to commnet address mapping i d Broadcast not available to user 1 32 e Modbus Concentrators must have addresses in this range Yo may want to block commnet address assignments by lineup and or Modbus Concentrator segment For Other Modbus native IEDs may also have example start with 40 for the first lineup attached to ee EE one Modbus Concentrator 50 for the second lineup attached and so on Addresses must be in the range 33 247 Modbus native IEDs may have addresses in 33 t6 947 The example presented in Figure 18 this range demonstrates this dian d ASS Increment the individual IEDs in each lineup by one en For example if the first IED in a lineup is Modbus Table 5 Modbus address range appropriate usage address 101 the second IED should be 102 the third IED should be 103 etc e Addresses may be entered or changed at any time
125. unicate at the same baud rate required by the IEDs See GEH 6509 See Table 1 for Modbus IEDs communication PMCS DDE Interface Guide for details speeds 5 Ethernet networks should conform to 6 RS485 cable shields must be properly grounded For the design guidelines described in iftaximum protection against surge and EMI Section 2 3 damage each IED on the networkshould have an isolated ground connection See Section 2 4 Modbus rule 4 for an example of proper RS 485 wiring and grounding Also see the note regarding substation installation in Chapter 3 Table 3 Ethernet configuration rules2 3 Ethernet Network Considerations This section describes some of the specifications which must be considered when designing n Ethernet network to be used with PMCS Note These specifications aresguidelines only and should not be used for actual network design Consult with a qualified LAN engineerfor design requirements that meet your specific installation The complete specifications are listed in IEEE 802 3 Ethernet In addition the National Electrical Code NEC and all applicable local codes must be followed for installing wiring Ethernet supports four physical media 10Base 2 thinnet 4JOBase 5 thicknet lOBase T twisted pair and lOBase EL fiber 10Base T is most common Power Management Control System NOTE for EPM 7700 and 94500 and 9650Q The EPM 7700 with Xpress card directly uses either of two types
126. utgoing lines eliminating harmful ground loops thapgean result when the ground potential between twogstructures is different For even greater electrical isolation Bilkcould have used an optical fiber link between the two remote locations Bill turns to his floor layouf to Seefjust where the wiring could be run and how much distance it must cover He knows where his host PC is located and realizes thai he will have to interrupt the Modbus network at one or more locations to insert Modbus Concentrators to support his commnet IEDs Heomaps where his IEDs must be located and based op this information where the Concentrators will be mounted Next he plans the commnet segments and measures thegcable runs required for each segment to conn ct the IEDs to the Modbus Concentrator keeping in mind thatthe Commnet rules require him to daisy chain the TEDs One after another unless he uses a Junction Qutlet box His floor layout is shown in Figure 24 21 Power Management Control System Chapter 2 Network Design RS485 networks terminated at host PC Bil s Office Q IED Type Physical Location Modbus Address Network 4 19 2kbaud p Lathe Area 300 L 350 3 EPM3720 PLC 90 30 Assembly line 01 EPM 3720 Milling 02 E See ene aa us w EPM 3720 Lathe area 03 2 U rennen EPM3720 EPM 3720 Machining 04 at main power feed 8 u Multilin 269 Assembly
127. vailable via two digital RS 485 communication ports running the Modbus proto ol If analog vaiues are required for direct int gfac gto a PLC any o the monitored values canbe o tput as a 4 20 ri signal io replace up to four separ te transducers A process variable can be meaSUxed using the analog input An RS 232 communication port can be connect ic a PG for simultane tis access of information by ether plant personnel via the front panel With increasing use of electronic lcads such as computers ballasts or variable frequency drives the quality of the power system is important Wit the PQM s harmonic analysis option any phase current or oltage can be displayed and the harmonic ccritent calculated Knowing the harmonic distributicn vov can tak action to prevent overheated transforiae s m crs Capacitors and neutral wires and nuisance breaker trips Redistribution of system loading can alsa be determined Waveform and chart recorder primotits available from the POM assist in problem d agn ssts Applications e Metering of distribution feeders transformers generators capacitor banks and motors e Medium and low voltage systems e Commercial industrial utility e Flexible control for demand load shedding power factor etc e Power quality analysis Measure Control e A V W var VA varh Wh PF Hz unbalance e A W var VAdemand e Load shedding e Power factor control Communication e Ports RS232 front
128. ve an isolated ground connection See Section a ThehosPCmustbe 2 4 Modbus rule 4 for an example of proper RS485 wiring and located at oneend othe grounding Also see the note regarding substation installation in Modbus network s Chapter 3 Table 2 Host PC configuration rules The following RS 485 interface ard is recommended for providing the RS485 connection at the host PC If any other serial card is used PMCS requires that the communications driver be compatible with the MS Windows serial communications protocol Please refer to Section 3 1 for information on the pecialltermination requirements of the RS 485 card Manufacturer Description Quantity 8 ports Part Order Number Connect Tech Inc IntelliconFlex8 RS 485 card 1 14808064 NNN Intellicon DFLEX SLIM 4 SIMMS 8 Port DBI I O Box IOBO8DB9 The following RS 232 RS 485 converter is recommended for providing a single RS 485 connection at the host PC Manufacturer Description Part Order Number Multilin RS 485 RS 232 Converter F485120 When using the above RS232 RS 485 converter remember that the converter has DIP switches inside that determine its baud rate Switch group 3 shouldtbe set according to the baud rate at which the converter is to be used Refer to the converter s documentation for further information 10 Power Management Control System Chapter 2 Network Design 2 2 Ethernet Configuration Rules It is also possible to run the PMCS on a host PC ope
129. y an RS 232 RS 485 converter a self contained IEDsthafeonverts signals between RS 232 and RS 485 This IED plugs into the RS 232 port on the back of the host PC and is less expensive than an RS 485 interface card Chapter 1 Introduction Ethernet Network Card The Ethernet network card provides the interface between the host PC and the Ethernet network With the host communicating over Ethernet Nan ther interface is required to communicate withyRS 485 networks where most power management IEDsxeside Some recent power management IEDs such asfthe BEM 7700 have built in Ethernet capability Install th se devices using standard Ethernet networking procedures This interface between Ethernet and RS 485 is provided by the Ethernet Gateway See Section 1 4 for more information on Ethernet and Section 1 1 Figures 2 and 4 for example f how the Ethernet Gateway is used to integrate RS 485metworks into the Ethernet network 1 44Gompatibility amp Interconnection with Existing Ethernet Networks PMCS and the Ethernet Gateway require TCP IP to be installed on the host computer The drivers for the GCPAIP protocol are included with Windows 2000 SP2 which is required to run PMCS so any customer running PMCS should have these drivers available Consult your LAN personnel or system integrator for information on integrating PMCS with an existing Ethernet based network 1 5 Operation During Power Outage PMCS will not lose

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