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GEH-6502-615 - GE Digital Energy

1. o 1 Shield r o 6 RTSA re 8 CTSB 12 Vdc ke 12 Vdc 12 Vdc gt 14 RTS B Power 12 Vdc 12 Vdc Lo 15 CTSA 6 screw terminals 25 pin male 15 pin female D style connector D style connector Figure C 2 Modbus network and Series 90 Micro RTU Port Wiring Power Management Control System Appendix C Special Wiring Considerations NOTE The RTU port ground signal connection is not required but may be connected if needed A one to two foot length should be enough for the four wire RTU cable with 25 pin female and 15 pin male D connectors between the PLC and the 2 4 wire converter Only Port 2 can be used for RTU communication on the 28 point Micro 90 A 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 Pin 1 to Pin 2 Pin 3 to Pin 4 e e Pin6to Pin 7 e Pin 8 to Pin 9 Connect the cable to the DB 9 connector as follows ee Shield Metal shell Apply heat shrink tape or jacket over the connector for protection At the end opposite the connector strip about 3 inches off the outer jacket of the cable Ethernet Gateway The Ethernet Gateway RS485 connection requires one 48 inch length of Belden 9271 cable covered with sleeving and a mal
2. 200 200 200 ft ft 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 degrades and the danger of errors rises to an unacceptable level The Repeater regenerates a signal to its original strength allowing it to travel up to another 1000 feet Thus each Repeater can add up to 1000 feet of range to the commnet segment For example a segment containing 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 rule CAUTION In no case may there be more than 1000 feet of cable between any two commnet IEDs other than Repeaters At ranges over 1000 feet commnet signals become degraded and communication errors may result Modbus Concentrator 400 ft 600 200 600 200 ft ft ft ft Max length of a commnet segment 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
3. 750 M ultilin 239 Motor P rotection Multilin 269 Relay LA Motor Relay L Terminating Resistors Machining Area Modbus Concentrator 400 RS 485 RS 485 Wu PortB Modbus Monitor 2 SpectraECM POWER LEADER EPM GHO Corp Machine Shop network wiring diagram Figure 27 Floor layout for Case Five 33 Power Management Control System Chapter 2 Network Design Confident that his new design will provide maximum performance and with his wiring requirements and limits 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 1 and 247 except for the Modbus Concentrator which must have an address between 1 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 Network Modbus Address Physical Location Power intake area Assembly line Assembly line 01 3 Modbus Monitor Lathe area 02 1 RS 485 Port A Multilin 239 Machining area 03 Motor Protection 04 3 Modbus Monitor Machining 2 RS 485 Port A Multilin SR750 Feeder Milling area 01 EPM 3720 Modbus Monitor Lathe area 03 1 RS 485 Port B Modbus Monitor Machining a
4. 59 Manufacturer Description OPTO 22 AC38 RS 485 Isolated Multidrop Repeater 369 Motor Management Relay The 369 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 improve the 369 s protective capabilities 369 offers the following features e AC DC control power e Flash memory e Simulation mode for field testing e Trip Alarm Auxl Aux Relay Outputs e Optional split mounting e Optional remote RTD module Spectra Electronic Control Module ECM The Spectra RMS Electronic Control Module ECM is a microprocessor based IED that functions as an adjustable overload relay to protect motor starters in GE 8000 Line Motor Control Centers It works in series with a Spectra RMS Mag Break 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 User selectable phase unbalance protection e User selectable equipment ground fault protection e Control voltage undervoltage contactor coil e Current metering via commnet e Full load amps adjustment of 33 100 of breaker rating plug value
5. Chapter 3 Network Wiring and Construction 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 You must never connect a single commnet segment to the Modbus Concentrator at more than one point or to more than one port on the Modbus Concentrator Figure 28 represents the correct wiring scheme for a commnet segment linear one IED to the next connected to the concentrator at one port only Figure 29 through Figure 32 show various incorrect wiring schemes commnet segments that are looped and nonlinear Avoid these wiring situations as they will cause communication errors 9 Commnet Connecions POWER LEADER Modbus Concentrator Commet Comectons shal end astal shi r ET e Shield Ground commnet commnet commnet IED IED IED Figure 28 Commnet shield grounding wired correctly commnet IED 9 CommnetComections E POWER LEADER Modbus Concentrator CommnetConnections ne di SUM or zem gt commnet commnet commnet commnet IED IED IED IED Figure 29 Incorrect wiring Looping on one Modbus
6. e NEC Relay Class 10 20 30 selection e Contact for monitoring trip status Power Management Control System Appendix A IED Descriptions SR469 Motor Management Relay The SR469 Motor Management Relay is intended for protection and management of medium and large horsepower motors and driven equipment Motor protection fault diagnostics power metering and communication functions have been integrated into one complete economical draw out package The SR469 has integrated every protection feature that could be considered a benchmark for medium and large motor protection This high degree of integration allows for standardization on one motor protection relay regardless of application The heart of the SR469 is the thermal model In addition to the current protection elements RTD inputs are provided for stator and bearing temperature protection The addition of VT inputs allows for voltage and power protection elements Phase differential CT inputs are provided for phase differential protection All of the protection elements are self contained and may be enabled as required This design makes programming the SR469 a simple exercise The SR469 has complete monitoring and metering functions An event recorder stores 40 time and date 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 t
7. AE 49 239 Motor Protection Relay 3 ieu eg edes e ette dst serito eee eene tec A 49 269 Motor Management Relay sise 49 565 Feeder Management Relay se nee teeth EEN en eie abere ENEE 50 735 Feeder Relay EE 50 MX200 Microprocessor Controllert ss 51 MX250 Microprocessor Controllert eene enne eene nene entere 51 Generator PEC Series HUE 1 rete edes s steve het ae mt e tae el ae dant So 52 Electronic Power Meter EPM 7330 sse eene nnne nnne snnt entere 52 Electronic Power Meter EPM 3710 eese esee eee entente eesi cenie tank e rne Ne 53 Electronic Power Meter EDM 220 53 Electronic Power Meter EPM 200 54 Electronic Power Meter EDM 7500 7600 7700 siens 54 GE Panuc PE 90 30t cote terree e M dt A ee eda 54 GE Pan c PLE 90 70 tere t o E oa eve e Ue a ete ees 55 GE Fanuc PLC Micro 90 aded ne e Mie Here asians 55 EPM 5000P 5200P 5300P 5350D 3 cette mnt eee eroe t t Pere teret tee delet 55 MicroVersaTrip C and D and Spectra MicroVersaTrip Trip Unts eene 55 Modbus Concentrator eet 56 Electronic Power Meter PLEPM nant naine te tee eet Maude ds nd aies 56 POWER LEADER Ethernet Gateway sise 56 POWER LEADER Junction Outlet Bon 57 Power Management Control System Table of Contents POWER LEADER MDP Overcurrent Relay ss 57 POWBR EEADER Meter iii eee EE ee PUR ERE Ero B EE ELE 57 POWER LEADER Modbus Monitor sise 57 POWER LEADER Repealt t tee p Ie IRE eiie ree pe
8. GEH 6502 POWER LEADER Power Management Control System Network Architecture Guide GEH 6502 WARNINGS CAUTIONS NOTES 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 injury exist 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 to equipment Caution notices are used for situations in which equipment might be damaged if care is not taken or which may cause communication errors to occur Notes call attention to information that is especially significant to understanding and operating the equipment This document is based on information available at the time of its publication While efforts have been made to ensure accuracy the information contained herein does not cover all details or variations in hardware and software nor does it provide for every pos sible contingency in connection with installation operation and maintenance Features may be described herein that are not present in all hardware and software systems GE Industrial Systems assumes no obligation of notice to holders of this document with respect to changes subsequently made GE Industrial Systems makes no representation or warranty expressed implied or statu
9. Are all the IEDs with problems Modbus IEDs Are they all commnet IEDs Are they all on one RS485 network or a single commnet segment or are they located on different networks or segments Do all the IEDs on a segment up to a certain point communicate while IEDs after that point do not If communication cannot be established with any of the IEDs on a network go to step 7 If the error is limited to certain IEDs the following checklist should help you isolate the problem The IED is powered up The IED s communication settings match those of the network it is on baud rate parity stop bits The IED s address has been assigned The same address is not assigned to another IED The network connections are good If the network has no repeaters go to step 8 For commnet segments with Repeaters you can 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 trouble shooting 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 POWER LEADER Repeater is not powered Power Management Control System Chapter 4 Trouble Shooting When the error has been localized to one RS 485 network commnet segmen
10. Concentrator commnet port 40 9 POWER LEADER Modbus Concentrator Commret Connections Commnet Connections xi EP J C commnet IED commnet commnet commnet IED IED IED Figure 30 Incorrect wiring Looping to two Modbus Concentrator commnet ports To Modbus Concentrator Commnet Segment X POWER LEADER J unction Outlet Box ore commnet IED commnet commnet commnet IED IED IED Commnet Segment To Modbus Concentrator Figure 31 Incorrect wiring Looping on segment connected to Junction Box POWER LEADER Repeater X X commnet commnet commnet commnet IED IED IED IED Figure 32 Incorrect wiring Looping on segment connected to POWER LEADER Repeater Power Management Control System 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 h
11. Concentrators are installed and functioning correctly Windows 2000 SP2 is installed and functioning correctly The Power Management Control System software is installed and properly configured WARNING Where personnel or equipment safety is involved do not rely exclusively on information reported by the Power Management Control System or any power management equipment ALWAYS confirm the status and safety of electrical power equipment in person by conventional test IEDs before 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 equipment that could result in a loss of protection and communications Power Management Control System Getting Started This page left blank intentionally Power Management Control System Table of Contents Preface Welcome to PMES uie init eres nm nement Melee nm none rat el 1 Whats Power Management airsoii rem covanventecesesodebseiessacesodeeteasdesndcasededeastbesbasainscedsets 1 Ben
12. Figure 13 illustrates this rule R ptr R ptr Correct Maximum two repeaters between RS 485 IEDs Rptr Rptr R ptr Incorrect more than 2 repeaters between RS 485 IEDs Figure 13 Network illustrating Modbus Rule 9 NOTE ON DUAL PORT RS 485 IEDS Several of 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 RS 485 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 Modbus Monitors dual port version may not be 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 to two separate Modbus networks NOTE For more information on wiring the POWER LEADER Modbus Monitor refer to DEH 027 Modbus Monitor User s Guide Power Management Control System Chapter 2 Network Design Example A Example B Modbus Modbus Modbus Segmert A Segment A Segment B Maritor Example C Macbus
13. 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 Bill 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 additional power management IEDs However the IEDs they wish to add are all commnet IEDs The host platform is based on Modbus with a multi port 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 Six Enhanced MicroVersa rip trip units for equipment protection e Three POWER LEADER Meters for waveform capture e One POWER LEADER EPM One POWER LEADER MDP Overcurrent Relay OneSpectra Electronic Control Module C
14. Semet A Figure 14 Valid Modbus Monitor network architectures CAUTION Any other wiring of the Modbus Monitor may result in incorrect operation and errors 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 same monitor in a dual port version wired to two different Modbus segments Examples C and D illustrate fully loaded Modbus segments No more than two Monitors are permitted on any Modbus segment Example C illustrates a pair of Monitors connected to a single Modbus segment In this example the Monitors may be either single port or dual port versions provided both are the same version see note below Example D shows the same pair of Monitors wired to a second Modbus segment CAUTION With regard to Example C two ay Monitors on a single RS 485 segment it is not permissible 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 18 port The nature of the other network architectures makes this concern irrelevant for examples A B and D since in Example A you could have either a single or a dualport Monitor while in Examples B and D you may only use a dual port monitor s Power Management C
15. 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 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 30 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 commnet IEDs and plan to integrate three separate facilities using repeaters GHO Corp plant engineer Bill has been given the task of designing and installing this system As in the previous cases Bill s first task is to choose a platform on which the PMCS host will reside GHO Corp requires Ethernet integration so the flowchart in Section 1 1 determines that the PMCS will reside on Ethernet requiring an Ethernet Gateway Next Bill makes a list of the IEDs that GHO Corp wishes to support on their PMCS network His IED list is One PLC 90 30 Programmable Logic Controller for process control e Two EPM 3720 Meters and one EPM 7700 for monitoring power One Multilin 269 Motor Relay for motor protection One Multilin 565 Feeder Management Relay for feeder protection e Six Enhanced Micr
16. 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 on 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 configurations Dynamic CT ratio mismatch correction monitors the on load tap position and automatically corrects for CT 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 data can be converted to a digitized format and downloaded into the SR745 s simulation buffer for playback The SR745 also provides its own waveform capture function
17. you can enhance 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 RS 485 networks if possible depending on the RS 485 connection at the host If using an eight port RS 485 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 RS 485 port Distributing the IEDs across all available RS 485 ports permits the communications load to be distributed rather than asking a single network to carry the full load 2 Divide the IED loads evenly when distributing IEDs across multiple RS 485 networks 3 Pay careful attention to Modbus Rule 2 regarding the communication speeds of IEDs on a given network Although a network will function with 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 regardless of the presence of any 19 2 kbaud IEDs Commnet performance recommendati
18. 5300P 5350P Digital Multifunction Power Monitor Instruction Manual N A EPMS5000P Digital Multifunction Power Monitor Instruction Manual N A EPM 9450Q and EPM 9650Q Advanced Power Monitor with Power Quality Control Functions Instruction Manual Third party IEDs Refer to the documentation that accompanied the device 65 Power Management Control System Appendix B Reference Documents This page left blank intentionally 66 Power Management Control System Appendix C Special Wiring Considerations This section describes the connections required to wire the following PMCS IEDs into a Modbus RS 485 network e GE Fanuc 90 30 and 90 70 PLC s Communications Coprocessor modules with e GE Fanuc Micro 90 PLC e DB9connections to the Connect Tech RS 485 card e DB9 connections to the POWER LEADER Ethernet Gateway 90 30 and 90 70 PLCs To wire the Communications 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 Pin9to Pin 13 e Pin2l to Pin 25 e Pin 22 to Pin 23 e Pn 10 to Pin 11 Connect the two cables to the DB 25 connector as follows O me fo se D D me 5 Shield 1 Apply heat shrink tape or jacket over the connector for protection At the end opposite the c
19. 729 measured parameters including harmonic distortion and demand e Waveform capture triggering communications port or setpoint e Waveform recording triggering communications port or setpoint e Fight programmable trend logs 12 parameters each 11 520 record capacity 40 days triggered by time interval or setpoint e Event log with 100 records standard resolution one second 53 Power Management Control System Appendix A IED Descriptions e Minimum maximum logs one preset with over 100 parameters 16 programmable logs of 16 parameters each with a trigger parameter for each log e 17 setpoints 11 standard speed six high speed trigger event log relay control snapshot log waveform capture or waveform recorder The Electronic Power Meter 3720 provides hundreds of high accuracy real time measured parameters as well as minima maxima and status parameters All voltage current power and energy readings are true RMS and sensitive to beyond the 50 harmonic Four quadrant readings measure bidirectional import export energy flow useful in any cogeneration application No PTs are required on the voltage inputs for systems up to 347 Vac line to neutral and 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 7300 The Electronic Power M
20. Ete P eere Pee RH Pte eoe en e EHE De Pee Cete e de Pedes 32 Table RL AR Addresses for Case EtVe item t qe e Ea ee p rsen i oe et oed onec 34 Table T3 te DE UE EE 38 iv Power Management Control System List of Figures and Tables This page left blank intentionally Power Management Control System Preface 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 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 control energy costs minimize downtime and outages and optimize operation to increase productivity With such a system in place y
21. LEADER Modbus Concentrator effectively serves as the host IED on up to eight commnet networks while acting as a slave to the master slave Modbus network The major functions provided by the POWER LEADER Modbus Concentrator are e Configuration of commnet IEDs e Data collection from commnet IEDs e Processing of metering data Demand and Energy calculations e Processing of events trips and alarms e Executions of commands upon host request Electronic Power Meter PLEPM The POWER LEADER Electronic Power Meter PLEPM is a full function electronic meter with 56 optional pulse initiation The PLEPM continuously 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 it calculates RMS voltage RMS current real and reactive power and other time based functions Data are then sent automatically to the display The PLEPM monitors and displays the following electrical parameters e RMS current Phases A B C and neutral e RMS voltage Phases A N B N CN A B B C C A e Watts Phases A B C and 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 dema
22. MX200 manages switch operation via a convenient touchpad that provides indication setting and diagnostic capabilities As an embedded digital controller the device offers high reliability and ease of unattended operation across a range of applications The GE Zenith MX200 Microprocessor offers the following features e Multipurpose display LEDs for continuous monitoring of switch position and source availability a four line by 20 character backlit LCD display for settings functions programming and annunciation e Through the door programming and display e Simplified keypad entry menu driven system is designed for ease of use 51 e Built in diagnostics with displays for ease of troubleshooting e Passcode protected to limit user access e Timer countdown display for ease of operation e User settings unaffected by power outages e Wide range of accessories and configurations available for the most demanding applications Design and Construction Features e Close differential three phase under voltage sensing of the normal source factory standard setting 90 pickup 80 dropout adjustable under frequency sensing of the normal source factory setting 95 pickup adjustable e Voltage and frequency sensing of the emergency source factory standard setting 90 pickup voltage 95 pickup frequency adjustable e Test switch fast test load no load to simulate normal source failure automatically bypassed should the e
23. See Section 2 1 for configuration rules to create extended range commnet segments Power Management Control System Appendix A IED Descriptions Power Quality Meter POM When continuous monitoring of a three phase system is required the Power Quality 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 added for specific applications These include basic alarm on over undercurrent or voltage unbalance demand based load shedding and capacitor power factor correction control More complex control is possible using the four switch inputs which also can be used for status such as breaker open or closed and flow information The POM is a datagathering IED for a plant automation system that integrates process instrument and electrical requirements All monitored values are available via two digital RS 485 communication ports running the Modbus protocol If analog values are required for direct interface to a PLC any of the monitored values can be output as a 4 20 mA signal to replace up to four separate transducers A process variable can be measured using the analog input An RS 232 communication port can be connected to a PC for simultaneous access of information by other plant personnel via the front panel With increasing use o
24. Speed EPMS8000 Power Quality Meter POMIT Metering Modbus RTU 19 2 Kbaud on 1 or 2 ports 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 EPM 7600 Electronic Power Meter Protection Control Modbus RTU 19 2 Kbaud Motor Manager II MMII Protection Control Modbus RTU 19 2 Kbaud EPM7430D EPM7450D Futura Protection Control Modbus RTU 9600 baud Spectra Electronic Control Module Protection commnet requires Modbus Concentrator Spectra MVT for GEK Frame MCCB Metering Protection commnet requires Modbus Concentrator SR469 Motor Management Relay Protection Control Modbus RTU 19 2 Kbaud on 1 or 2 ports SR489 Generator Management Relay Protection Control Modbus RTU 19 2 Kbaud on 1 or 2 ports SR745 Transformer Management Relay Protection Control Modbus RTU 19 2 Kbaud on 1 or 2 ports SR750 Feeder Management Relay Protection Control Modbus RTU 19 2 Kbaud on 1 or 2 ports 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 Etherne
25. cable Figure 18 illustrates this rule Modbus Concentrator 400 ft R R 600 6000 600 200 200 ft ft ft ft ft 1000 ft Max length of a commnet segment with two Repeaters 8000 feet R R 6000 4000 1000 ft ft ft 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 19 Power Management Control System Chapter 2 Network Design 5 The maximum allowable cable length of a single Examples of the use of a POWER LEADER Junction commnet 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 to the next up to four IEDs may be wired to the POWER LEADER Junction Box which is then connected to the Modbus Concentrator be obse
26. 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 RS 485 Port Modbus IED Type Physical Location Address Multilin 565 Power Intake Area 1 01 Multilin 269 AssemblyLine 201 2 01 Assembly Line 3 01 PLC 90 30 3 01 EPM 3720 Machinin 3 02 Multilin SR745 Multilin SR469 Table 10 IED Addresses for Case Three Bill next checks Chapter 3 for physical wiring requirements and rules He finds that he ll have to use Belden 3074F cable for the RS 485 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 at the final IED and the host Ethernet Gateway While wiring he follows the RS 485 cable shield wiring rules explained in Section 2 4 rule 4 Bill then assigns local Modbus addresses to the IEDs and sets communication speeds and parameters according to
27. properly grounded For maximum which permits a single protection against surge and EMI damage each IED on the RS 485 network network should have an isolated ground connection See Section The host PC must be 2 4 Modbus rule 4 for an example of proper RS485 wiring and located at one end of the Modbus network s grounding Also see the note regarding substation installation in Chapter 3 Table 2 Host PC configuration rules The following RS 485 interface card is recommended for providing the RS 485 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 special termination requirements of the RS 485 card Manufacturer Connect Tech Inc Description Quantity 8 ports Part Order Number Intellicon Flex8 RS 485 card 1 14808064XXNC Intellicon DFLEX SLIM 4 SIMMS 8 Port DB9 I O Box 1 IOBO8DB9 The following RS 232 RS 485 converter is recommended for providing a single RS 485 connection at the host PC Manufacturer Multilin Description RS 485 RS 232 Converter Part Order Number F485120 When using the above RS 232 RS 485 converter remember that the converter has DIP switches inside that determine its baud rate Switch group 3 should be set according to the baud rate at which the converter is to be used Refer to the converter s documenta
28. segment must be wired independently having no contact with other commnet segments and connected to the Concentrator at one point only no loops permitted Maximum cable length of a commnet segment is 1000 feet Maximum range between commnet IEDs on a segment is 1000 feet except for repeaters see below In no case may a commnet 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 travel up to another 1000 feet Long distance segments may be created by placing multiple repeaters adjacent to one another in a commnet segment A repeater communicating directly with another repeater may span up to 6000 feet Maximum allowable cable length of a single commnet segment is 12 000 feet which may be 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 Outl
29. serving as a slave to an Ethernet based host Figure 1 presents the Power Management Control System operating on a Modbus only network Power Management Control System Chapter 1 Introduction Eibe mei batwy pu EPM 96500 ZR160 EPM 5350P Figure 2a Substation Ethernet and Modbus network O Commnet devices Figure 3 Modbus and commnet network Bhernet Modbus Concentrator 3720 Multilin 269 Commnet devices Figure 4 Ethernet Modbus and commnet network naria 750 760 EPM 96500 Comma e ide vices Figure 5 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 master slave 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 o
30. speeds and functional and protective parameters according to the instructions in each user manual Bill installs the PMCS software at the host PC and configures IED addresses at the host to match the addresses assigned to each IED on the network Configuration files for the Modbus Monitors are downloaded to the units or created using the Monitor 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 trouble shooting guide in Chapter 4 Power Management Control System Chapter 2 Network Design This page left blank intentionally 35 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 rules described herein apply primarily to commercial and 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 lar
31. 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 14 programmable logic inputs e Bus transfer Monitoring and Metering e Fault locator record of last 10 faults e Breaker operation amp trip failure e VT Failure e Power factor two independent stages e Analog input level and rate e Total breaker arcing current e Event recorder Last 100 events e Oscillography 256 cycles e Metering V I Hz var VA PF e Demand Io Io I MW Mvar MVA e Data Logger User Interface e 40 character display and 24 LEDs Full numeric keypad e RS 232 and RS 485 ports Power Management Control System Appendix A IED Descriptions SR760 Feeder Management Relay The Multilin SR760 Feeder Management Relay is an enhanced version of the Multilin SR750 relay adding a four shot recloser EPM7430D EPM7450D The Futura multifunction digital power monitoring system offers the most extensive monitoring and analysis available Surpassing all other meters in its class this unit fulfills all your metering data recording and power analysis needs This is simply the best power monitoring and analysis solution ever For a graphical view of all the meter can do check out the Futura Communicator link You will be very impressed Features e Multifunction Power Monitoring Measuring Every Pa
32. 12 commnet IEDs to connect he requires only one RS485 network each RS 485 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 RS 485 networks to achieve greater system performance He also notes that each RS 485 network must be properly terminated at each end He must keep the RS 485 cable length of each RS 485 network under 4000 feet unless he uses RS 485 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 are limited to one per segment 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 the cable runs required to connect the IEDs to the host PC keeping in mind that the RS 485 rules require him to daisy chain the Modbus IEDs one after another from the Ethernet Gateway and the commnet IEDs four per segment from the Modbus Concentrator
33. 2 K baud PLOsece GE Fanuc PLC sae imzkbaud is E baud TCR 19 2 K baud EPM 5 300P 19 2 K baud Correct di Rrent baud rates on ashgk Rh 3 45 networt direnthS 4s 5 networts 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 Power Management Control System Chapter 2 Network Design 5 Each RS 485 network must have its shield properly 85 Host Shield grounded Figure 9 illustrates proper RS 485 wiring and grounding To ensure proper grounding follow this procedure Begin by grounding the RS 485 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 RS 485 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 CAUTION Improper grounding may create a 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 RS 485 shield from the previous IED but DO connect the RS 485 OUT shield on its way to the next IED EXCEPTION The Multilin 565 Feeder Management Relay does not have isolated communica
34. 7700 Electronic Power Meter 052 Lineup 2 Multilin 269 Plus Motor Relay 060 8000 Line Motor Control Center Modbus Concentrator 2 002 Segment 1 Spectra Electronic Control Module 065 332 Segment 2 Spectra Electronic Control Module 070 337 Segment 3 Spectra Electronic Control Module 085 352 Segment 4 Spectra Electronic Control Module 090 357 EPM 7700 Electronic Power Meter using IP address n a n a 3 46 9 102 Lineup 3 Modbus Concentrator 3 003 AKD 8 Low Voltage Switchgear Segment 1 POWER LEADER Meter 155 422 Segment 2 Enhanced MicroVersa Trip trip unit 160 497 Segment 3 POWER LEADER Meter 165 432 Segment 4 Enhanced MicroVersa Trip trip unit 170 437 175 442 180 447 185 452 Lineup 4 GE Fanuc Programmable Logic Controller 90 30 004 Medium Voltage Motor Control Center Multilin 565 Feeder Management Relay 005 Lineup 5 EPM 5300P 200 Substation EPM 5200P 205 EPM 9650Q 210 EPM 7300 215 EPM 7330 220 EPM 7330 225 Table 7 IED addressing scheme for Figure 21 24 Power Management Control System Chapter 2 Network Design 2 9 Multiple RS 485 Networks Addressing PMCS supports up to 256 independent Modbus networks Regardless of how many RS 485 networks are connected the addressing concepts regarding multiple RS 485 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 Net
35. 85 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 Protection Relay The 239 relay is designed to fully protect three phase ac motors against conditions that can cause damage In addition to motor protection the relay has features that 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 Setpoints are entered via the front panel or with a computer Status actual values and trouble shooting information are available in clear English from the front panel display A simulation mode and pickup indicator allow testing and verification of correct operation withou
36. Ds has been correctly installed and that the correct control voltage is present at each IED 3 If commnet IEDs are installed apply control power to the IEDs and then to the Modbus Concentrator to which they are attached 4 Apply control power to any Modbus RTU IEDs 5 Apply control power to the Ethernet Gateway if one is being used 6 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 System software installation procedures in GEH 6514 Read This Book First Power Management Control System Chapter 4 Trouble Shooting 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 2 Obtain a one line diagram of the system Verify that none of the Modbus network configuration rules detailed in Chapter 2 have been violated If POWER LEADER commnet IEDs are attached to the network vi
37. Each protection element can be selectively enabled with the front panel dial settings Flexible settings and selectable curve shapes enable accurate coordination with other IEDs Installation and maintenance costs are lower when the SR735 is used instead of the eight separate over current protection IEDs it can replace The SR735 has three output contacts trip auxiliary trip and service required The auxiliary trip may be set to follow the main trip relay act as an 86 Lockout relay or to respond only to ground overcurrent faults while the main trip responds only to phase overcurrent faults The SR735 has eight trip indicators on the front panel along with a button to reset the relay Four status indicators provide a quick visual check of relay status A bar graph indicates current load as a percent of CT rating Communications switches on the front panel set baud rate relay address and the simulation mode for testing An RS 485 connection is provided for computer access Software is provided with the relay to allow setup and simulation testing Computer access allows the display of a trip record which contains the pre trip currents and the last five trip conditions Computer access also allows the display of metered current values as a percent of CT rating output relay status status indicators and dial settings The SR735 has a drawout construction and can be door or 19 inch rack mounted Application e Feeder protection an
38. GE Fanuc PLC 90 70 GE Fanuc s Series 90 70 Programmable Logic Controller offers 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 flexible backplane design of the 90 30 while offering a selection of more powerful microprocessor CPUs The Series 90 70 PLC offers access to a large variety of discrete and analog I O modules Input modules supporting eight to 32 circuits in a variety of voltages are available as are a range of output modules The features and functions provided by the PLC 90 70 vary depending on the options installed in the backplane See your GE Industrial Systems sales engineer for more details on the PLC 90 30 or 90 70 The PLC 90 30 and PLC 90 70 functions supported by the Power Management Control System include the following e Reading of input and output tables e Reading of registers e Reading of analog inputs e Reading of exception status e Preset single registers Force multiple outputs e Preset multiple registers e Report IED type e Read scratchpad memory GE Fanuc 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 90 Micro PLC is an ideal way to replace relays and automate small processes Its all in one construction saves panel space and its powerful features bring productivity and cost savings to e
39. His floor layout is shown in Figure 26 The RS 485 cabling is less than 4000 feet for each of the RS485 networks except for Network 3 where RS 485 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 The wiring rules are satisfied Bill selects 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 GEH 6491 and records them for future reference Bill s address chart found in Table 11 follows the floor layout Figure 26 Floor layout for Case Four 31 Power Management Control System Chapter 2 Network Design or equivalent Address PLC 90 30 Assembly line Port 3 IED 02 Modbus Concentrator Facility 2 north wall Port 3 IED 03 EPM 3720 Machinin Port 4 IED 01 EPM 3720 Port 4 TED 02 Enhanced MicroVersaTrip trip unit Enhanced MicroVersaTrip trip unit Enhanced MicroVersaTrip trip unit Enhanced MicroVersa Trip trip unit Enhanced MicroVersaTrip trip unit Facility 2 Segment 1 Port 3 IED 33 Enhanced MicroVersa Trip trip unit Facility 2 Segment 5 Port 3 IED 71 POWER LEADER Meter Facility 3 Segment 3 Port 3 IED 51 Lens Spectra ECM Facility 3 Segment 3 Port 3 IED 52 Table 11 IED Addresses fo
40. 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 a function 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 the DDE Server the fewer IEDs that may be managed The host is networked to the power management IEDs in one of two fashions The host may be based directly on the RS485 platform and communicate with the RS 485 networks via interface cards Alternatively the host may reside on an Ethernet network talking directly to Ethernet capable IEDs such as the EPM 7700 and to Modbus native devices via a separate Modbus to Ethernet converter which supports the RS 485 networks This is described in greater detail 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 system based on GE s Power Management Control System Please read the entire manual before attempting to put it into practice Chapter 1 provides a basic overview of the PMCS typical systems and intelligent electronic devices IEDs supported It is imperative that you have a thorough understanding of what the PMCS is and its var
41. MicroVersaTrip Plus and MicroVersaTrip PM Rating Plugs GEH 5934 MicroVersaTrip Plus and MicroVersaTrip PM Trip Units in Spectra RMS Molded Case Circuit Breakers GFK 0356 GE Fanuc Series 90 30 Programmable Logic Controller Installation Manual GFK 0262 GE Fanuc Series 90 70 Programmable Logic Controller Installation Manual GFK 0582 GE Fanuc Series 90 Programmable Logic Controller Serial Communications User s Manual MRP70000 0007 Electronic Power Meter 3710 MRP70000 0004 Electronic Power Meter 3720 1665 0003 C5 Multilin Power Quality Meter PQM GEK 106435C Multilin Power Quality Meter II POMII EPM8000 1601 0067 C6 Multilin 239 Motor Protection Relay 16010013 BC Multilin 269 Motor Management Relay 1601 0057 D3 Multilin SR469 Motor Management Relay 1601 0071 E1 Multilin SR489 Generator Management Relay 1601 0017 E4 Multilin 565 Feeder Management Relay 1601 0048 DA Multilin 735 Feeder Relay 1601 0070 A3 Multilin SR745 Transformer Management Relay 1601 0044 A8 Multilin SR750 760 Feeder Management Relay GEH 6508 Modbus Protocol Guide GEH 6509 PMCS DDE Interface Guide GEH 6510 PMCS Network and IED Configurator DDE Server Users Guide GEH 6511 PMCS Waveform Capture GEH 6512 PMCS Event Logger GEH 6513 PMCS Interface Toolkit GEH 6514 PMCS Read This Book First installation guide GEH 6515 PMCS System Test Simulator DEH 40035 GE 7700 Gateway User s Guide 70000 0019 7300 ION Installation and Operation Manual N A EPM 5200P
42. R489 Generator Management Relay The SR489 Generator Management Relay provides economical protection metering and monitoring functions It can be used as primary or backup protection on synchronous or induction generators of 25 50 or 60 Hz It may be applied in primary backup and cogenerator applications The SR489 offers comprehensive generator protection features These features include phase differential 100 stator ground ground overcurrent negative sequence overcurrent voltage restrained phase overcurrents over and undervoltage over and underfrequency and reverse power To accommodate 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 Voltage terminal fuse and breaker operation are monitored and failures reported Four analog inputs may be used for monitoring vibration or control transducers The four analog output channels can be configured to reflect any measured parameter and may be used to eliminate Power Management Control System Appendix A IED Descriptions costly transducers Digital inputs may be used to route signals through the SR489 for protection control or diagnostic functions The user interface includes a 40 character display and a keypad Twenty two LED indicators on the fron
43. U 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 90 70 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 commnet requires Modbus Concentrator Modbus Concentrator Communications Modbus RTU 19 2 Kbaud POWER LEADER Electronic Power Meter Metering Modbus 19 2 Kbaud or commnet commnet requires Modbus Concentrator POWER LEADER 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 Management Control System Chapter 1 Introduction IED Name Function Communications Protocol Modbus
44. a Modbus Concentrators you must check their configuration as well Examine each Concentrator and its attached commnet IEDs to verify that none of the commnet network configuration rules detailed in Chapter 2 have been violated If the network complies with these rules or has been modified to comply with them and problems persist continue with the remaining steps 4 Determine if any communication is possible Select a Modbus IED whose wiring connections you have checked from the host to the IED and attempt communication from the host to the IED If no communication can be established check that the communication settings for the RS 485 network match those set at the IED and that the Modbus address at the IED matches the address assigned at the host Reattempt communications 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 IED 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 AN some IEDs continue with step 5 otherwise go to step 6 Establish a pattern for the IEDs that do not respond
45. a at several locations to save walking all the way back to his office every time he wants to check an IED To serve this purpose he s purchased a pair of dual port Modbus Monitors which he will install in the Milling and the Machining areas respectively He checks the Modbus Monitor wiring rules and sees that he ll be able to connect RS 485 Network 3 to the RS 485 Port A of each Monitor and RS 485 Network 4 to the RS 485 Port B of each Monitor This will allow him to view data from the IEDs in these areas at either station as well as back in his office at the host PC Proper termination is required at each end of the network and is provided at the RS 485 card by placing jumpers between the correct pins see RS 485 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 The network architecture diagram Bill creates is shown in Figure 27 RS 485 networks terminated athostP C Bill s Off Network 4 19 2 kbaud Lathe Area EL SR750 FeederManagementRelay Milling Area Network 3 19 2 kbaud 400 M ultilin 565 FeederManagementRelay atmain power feed EPM 3720 Electronic Power Meter SR469 Motor Management Relay Network 1 9600 baud RS 485 RS 485 PortA PortB Modbus Monitor 1 550 Assembly Line Area EMVT C Trip Unit E 3 N x Z 600
46. ard manual that accompanied settings are incorrect your meter PMCS Ethernet connections require the following XPRESS Card settings l AnIP address mandatory 2 Asubnet mask network dependent option 3 Adefault gateway optional required to communicate between networks 4 IP port number must be set to 7700 mandatory 5 Usethe ION protocol mandatory 44 Power Management Control System Chapter 4 Trouble Shooting Symptom Possible Cause Corrective Action EPM 7700 only 9 Network configuration is incorrect Refer to the following PMCS technical documentation 1 DEH 0035 GE 7700 Gateway User s Guide section titled EPM 7700 Network Configuration 2 GEH 6514 the PMCS Read This Book First section titled Configuring the EPM 7700 Device Network EPM 94500 96500 with Ethernet option only 10 Device communication settings are incorrect Using the EPM 9000 Series Communicator software check device profile 1 A device IP address Host address 2 Device Port set to 502 3 Asubnet mask network dependent option 4 Adefault gateway optional required to communicate between networks EPM 94500 96500 with Ethernet option and acting as an Ethernet Gateway only 11 Device communication settings are incorrect Check that the Ethernet Gateway Port of the EPM 9450Q 9650Q Gateway is wired to each Modbus device Port 1 Using the EPM 9000 Series Communic
47. ator software check device profiles l The pass through baud rate setting of EPM 9450Q 9650Q Gateway must match the baud rates of all Modbus devices 2 All Modbus devices must have unique addresses 2 Nocommunication to one or more Modbus IEDs some IEDs OK l The IED or a repeater is not powered 2 RS 485 wiring is shorted or improperly connected 3 An RS 485 shield has been grounded incorrectly 4 The network configuration is incorrect 5 The IED is not addressed 45 Check that control power is supplied to all IEDs and repeaters If the IED or repeater does not operate when control power is present contact the GE Resolution 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 network for compliance Improper grounding can cause communication errors Check that the network conforms to Rules 1 through 8 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 Shooting Symptom Possible Cause Corrective Action 3 Nocommunication to any IEDs on one commnet segment Two or more Modbus IEDs have the same address The IEDs or a Repeater on that segment is not powered Commnet wires are shorted or improperly connected The n
48. atures including the following functions with an asterisk require the optional Meter Transducer Module Metering e Currents Ia Ib Ic Ground Current e Voltages Va b Vb c Vc a e kW KVAR e Power Factor Power Management Control System 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 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 Frequency e Power factor e kW KVAR KWHr e Peak kW KVAR demand Protection and alarm e Phase and ground overcurrent e Current unbalance e Overvoltage e Undervoltage e Power factor e Under Over frequency e Peak Amps kW KVAR demand e Undercurrent e Thermal capacity 735 Feeder Relay The 735 is a microprocessor based relay for primary circuit protection on distribution networks at any voltage level Protection features include three phase 50 timed overcurrent phase instantaneous overcurrent ground timed overcurrent and ground instantaneous overcurrent
49. ble He then sets the serial port communication parameters for each Gateway port after referring to document GEH 6505 Ethernet Gateway User s Guide for information on configuring the Gateway serial ports Bill 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 Bill modifies the 7700 network configuration file for the EPM 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 RS 485 dual port IEDs The PMCS host resides 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 RS485 Modbus Monitors t
50. 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 on which the PMCS host will reside Using the flowchart in Section 1 1 he decides that the PMCS will reside on Ethernet requiring one or more Ethernet Gateways to communicate with the RS 485 networks Next Bill makes a list of the IEDs that GHO Corp needs to support on their PMCS network The IED list is the same as in Case One One PLC 90 30 Programmable Logic Controller for process control One EPM 3720 Meter for monitoring power One Multilin SR745 Transformer Management Relay One Multilin SR469 Motor Management Relay One Multilin 269 Motor Relay for motor protection One Multilin 565 Feeder Management Relay for feeder protection The list of communication protocols in Table 1 shows that all the IEDs communicate on Modbus because no commnet IEDs are being used no Modbus Concentrators are needed However because the PMCS will be operating on Ethernet he will need to use an Ethernet Gateway to relay communications 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 the same RS 485 network The Ethernet Gateway offers four RS 485 ports so using more than
51. card Connect the cable shield to the shield terminal at each IED on the RS 485 network except the Multilin 565 which does not have isolated communication ports Modbus Rule 5 Section 2 4 Commnet The commnet cable shield must be grounded at only a single point in each commnet segment This is done at the POWER LEADER Modbus Concentrator Each commnet port on the Modbus Concentrator has a ground terminal and 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 follow 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 Junction 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 39 Power Management Control System
52. cknet lOBase T twisted pair and 10Base FL fiber 10Base T is most common 12 Power Management Control System Chapter 2 Network Design NOTE for EPM 7700 and 9450Q and 96500 The EPM 7700 with Xpress card directly uses either of two types of Ethernet physical media that must be specified when ordering the meter 10Base T or 10Base FL EPM 94500 and EPM 9650Q 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 connected to IEDs with copper wire especially installations where the data communication cable is exposed i e 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 da
53. cks Table 2 for the Modbus wiring rules Proper termination is required at each end of the network and is provided at the RS 485 card by attaching jumpers to the correct pins see RS 485 card user manual The appropriate terminating resistors must be used at the opposite end of each RS 485 network per Section 2 4 rule 3 His cable length is well under the 4000 foot limit so no repeaters will be needed Because he has only six IEDs to connect only one RS 485 network is required and thus an RS 232 RS 485 converter would do the job However he considers the performance recommendations given in Section 2 6 and remembering his earlier note about the different baud rates of his Modbus IEDs he decides to distribute the IEDs across four ports of an RS 485 network card so that he can place IEDs with matching baud rates on the same RS 485 network The system redesigned for optimum performance is shown in Figure 23 RS 485 networks terminated at host PC Lathe Area Bill s Office CO Network 4 19 2 kbaud 350 EPM 3720 Electronic Power Meter Milling Area Network 3 19 2 kbaud E Va 600 Network 1 9600 baud P d EPM 3720 Electronic Power Meter M ultilin 565 FeederManagementRelay atmain power feed Machining Area EPM 3720 Electronic P ower Meter Network 2 2400 baud Assembly Line Area GHO Corp Machine Shop network
54. d log with 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 maximum log with 17 parameters e 17 standard speed setpoints trigger event log or relay control The Electronic Power Meter 3710 offers 38 high accuracy real time measured parameters minima and maxima for 21 parameters and 25 status parameters 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 advanced features including the following e Three phase voltage inputs e Three phase current inputs e Neutral ground current input Three relay outputs e Four digital inputs with pulse counter on all four inputs with maximum pulse count frequency of 10 Hz e One analog voltage input one analog current output e
55. dems seen 6 Figure 7 Network illustrating Modbus Rules 1 and 2 ne 15 Figure 8 Network illustrating Modbus Rule 3 15 Figure 9 Network illustrating Modbus Rules 4 and 5 esses ener nennen nennen nenne 16 Figure 10 Network illustrating Modbus Rule 6 iii 17 Figure 11 Network illustrating Modbus Rule 7 essent rennen eren nest nest trennen nennen 17 Figure 12 Network illustrating Modbus Rule 8 esee ren rennen erstes nennen 17 Figure 13 Network illustrating Modbus Rule 9 rennen rennen A 17 Figure 14 Valid Modbus Monitor network architectures ss 18 Figure 15 Network illustrating commnet Rule 1 nennen trennen nest trennen nennen 19 Figure 16 Network illustrating commnet Rule 2 essere nennen nennen nennen trenes restent nennen 19 Figure 17 Network illustrating commnet Rule 3 nennen en nren rese trennen nenne 19 Figure 18 Network illustrating commnet Rule 4 netter eterne entren nenn tenens 19 Figure 19 Network illustrating commnet Rule 6 sine 20 Figure 20 Network illustrating commnet Rule 6 sisi 20 Figure 21 Sample network with IED addresses nennen rennen nest nennen 23 Figure 22 Floor layout for Case Ones x ide eee ette e ee t Pee ere eene in ales 26 Figure 23 Redesigned layout for Case One 26 Figure 24 Floor layout for Case TWO iniit ttti eerte e rie eei Re safe bet iq ont Li esto uh ee bots AAT 28 Figure 25 Floor layout for Case Thre
56. e 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 Appendix A IED Descriptions This page left blank intentionally 64 Power Management Control System 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 IED Subject GEH 6491 POWER LEADER Modbus Concentrator User s Guide GEH 6505 POWER LEADER Ethernet Gateway User s Guide GEH 5904 POWER LEADER Repeater User s Guide GEH 5947 POWER LEADER Junction Box User s Guide GEH 6273 MicroVersaTrip Plus and MicroVersaTrip PM Trip Units for Type AKR Low Voltage Power Circuit Breakers Power Break I and Power Break II Insulated Case Circuit Breakers and R Frame Molded Case Circuit Breakers and Low Voltage Power Circuit Breaker Conversion Kits GEH 5892 POWER LEADER Meter User s Guide GEH 6302 POWER LEADER Electronic Power Meter User s Guide DEH 027 POWER LEADER Modbus Monitor User s Guide GEH 6435 Spectra RMS Electronic Control Module GEK 100682 MDP Overcurrent Relay with commnet GEH 5933
57. e gos oa EO p Area eae 29 Figure 26 Floor layout for Case Four secession ann ia e eire Ceci ita eee dene ee SEN 31 Fisure 27 Floor layout for Case Five teres enero eee tr e pec teet e ete eie ree tie RR ees 33 Figure 28 Commnet shield grounding wired correctly ss 40 Figure 29 Incorrect wiring Looping on one Modbus Concentrator commnet port 40 Figure 30 Incorrect wiring Looping to two Modbus Concentrator commnet ports 40 Figure 31 Incorrect wiring Looping on segment connected to Junction Box 40 Figure 32 Incorrect wiring Looping on segment connected to POWER LEADER Repeater eeeeene 40 Tables Tablet IEDs supported by PMOCS eee cete ete ce Ge ed ete dece dete Leer 8 Table 2 Host PC configuration rules eed eet ette t Pede e eet an net rte redet eles 10 Table 3 Ethernet configuration rules ecce tr etre Re IEEE RIS E Ed HE ENER HESS RAV Re ont A SSES 12 Table 4 Commnet IED configuration les 14 Table 5 Modbus address range appropriate usage sise 22 Table 6 Modbus to commnet address mapping rene en rete en nest trennen nenne 22 Table 7 IED addressing scheme for Figure 21 een ee deter tnnt tice erae ENEE e nn 24 Table 8 IED Addresses tor Case On 25e ten nn Min Meet E ne en A a RAR 26 Table 9 IED Addresses Tor Case TWO n emit e ist a eee e e s E Ep ERU et ee iet haus 28 Table 10 IED Addresses for Case Three nan temere pes rg oggi eds 30 Table 1T IED Addresses for Case EOUE cre
58. e DB 9 connector Connect one end of the cable to the DB 9 connector as follows 68 Shield Apply heat shrink tape or jacket over the connector for protection At the end opposite the connector strip about 3 inches off the outer jacket of the cable Power Management Control System Notes 69 GE Industrial Systems General Electric Company 41 Woodford Ave Plainville CT 06062 GEH 6502 R045 01 02 2000 2003 General Electric Company
59. e de 57 Power Quality Meter PQM nonen eet tee eto eh esee NEEN NEES 58 RS 485 Repea t t iit ee RENE oen He e ee deese 58 EPM8000 Power Quality Meter PQMID sise 58 RS 485 Repeaters nee eet Uie tC EH Hn PH e EE eee a EE ote eL ede d 59 Spectra Electronic Control Module ECH 59 SR469 Motor Management Relay A 60 SR489 Generator Management Relay see 60 SR745 Transformer Management Relay nre nre 61 SR750 Feeder Management Relay sise 62 SR760 Feeder Management Relay A 63 Motor Manager II MMID 4 ette tet ettet eee te espe e e ee ata 63 90 30 and 90 70 PLCS Rain nn enter rne eee ce P REO EA E rece iei eon 67 M icro 90 PES aite terras ment mn oH ree PUE er En 67 Connect Tech RS 485 Catd hio erre e eee e tette e ie e t a E ete ea 68 Ethernet Gateway Sedet tee net e tee eR ee ee lee Cea ea 68 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 1 Modbus only netWOotk sise ntm esie ret etre HH e LH e ROLE eet e ies E egeo ee Lo Feo Leo ne Heo b gehe dinde 3 Figure 2 Commercial Ethernet and Modbus network ses 3 Figure 3 Modbus and commnet network sister 4 Figure 4 Ethernet Modbus and commnet network ses 4 Figure 5 Ethernet based host services Ethernet Modbus and commnet networks 4 Figure 6 Example of remote operation using mo
60. efer to the instruction manuals of these devices and to the sections titled Internal Network Option Also refer to DEH 6510 DDE Server User s Guide Refer to the sections describing the use and configuration of the Modbus TCP Server 11 Power Management Control System Chapter 2 Network Design Host PC is And these rules for the Modbus networks attached to the based on Follow these rules for the host Ethernet Gateways Ethernet 1 Ethernet Gateway s must be used to 1 Each Modbus network supports up to 31 physical communicate with non Ethernet IEDs Modbus IEDs and up to 247 Modbus addresses Ethernet capable IEDs may be installed This is possible because commnet IEDs 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 2 Each Modbus network must be properly terminated Ethernet Gateways at each end of the network See Section 2 4 3 Each Ethernet Gateway supports up to 3 The Ethernet Gateway must be located at one end four independent Modbus networks of the Modbus network s The EPM 9450Q 9650Q devices will 4 Maximum cable length of each Modbus network is support one Modbus network 4000 feet See notes 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 s
61. efits of Power Management 1 Whats PMCS si Reise o eee e De o nai teet anal este Re 1 How Does PMCS Work iio da atate qe EEN 2 Usine his Guide ehe rb bee eet eee met 2 Chapter t Lv ROC OI soe ees vce ci ava nO utra divus cd cade den eege 3 1 1 Typical Systems iiit ee Re EE e tee Pede eset loe eei He Ret espe epa Ped 3 1 2 Master Slave Organization seen 4 1 3 Required Hardware edo HS athe deen t E E Ge b e eee etes 5 Host eu EE 5 RS 485 Interface Card or RS 232 RS 485 Converter 2 Ethernet Network Card dade ee teer e ate e eae e Eee D Rae 5 1 4 Compatibility amp Interconnection with Existing Ethernet Networks esses 5 1 5 Operation During Power Outage ses 5 1 6 Time amp Date Stamping nee e e ee ree t e ete Ar 6 1 7 Remote System Operation oe e a e er i ere Ro tee Ra reae 6 Les Supported IEDS 22 n e en ee ee ete ee pae aa e vex e eter eite eaa 7 Chapier2 Network E EE 9 2 1 Modbus ETC 10 2 2 Ethernet Configuration Rules ss 11 Table 3 Ethernet configuration rules2 3 Ethernet Network Considerations 12 10Base T specifications and rules ener 13 10Base FL specifications and rules rennen 13 2 4 Commnet Configuration Rules ss 14 2 5 Modbus Wiring Rules Diagrams eese eren netten 15 2 6 Commnet Wiring Rules Diagrams ss 19 2 7 Performance Recommendations sense 21 Th Id al Network uere cH bee indeed eae 21 Modbus performance recommendations eee 21 Comm
62. elow RS 485 Interface Card or RS 232 RS 485 Converter The RS485 interface card provides the interface between the host PC and the Modbus network and terminates the network at the host computer This standard RS 485 interface card provides eight RS 485 ports PMCS supports up to 256 RS 485 communication ports See Sections 2 1 2 4 and 2 7 for more details on using multiple RS 485 networks with PMCS For more modest needs a single RS 485 network can be provided by an RS 232 RS 485 converter a self contained IED that converts 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 Ethernet Network Card The Ethernet network card provides the interface between the host PC and the Ethernet network With the host communicating over Ethernet another interface is required to communicate with RS 485 networks where most power management IEDs reside Some recent power management IEDs such as the EPM 7700 have built in Ethernet capability Install these 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 examples of how the Ethernet Gateway is used to integrate RS 485 networks into the Ethernet network 1 4 Compatibility amp Interconnection with Existing Ethernet Netwo
63. es via the 1 PMCS running on a Modbus based host PC or Ethernet Gateway and Commnet devices via the Modbus 2 PMCSrunning on an Ethernet based host PC SEET Devis following flowchart 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 9650Q EPM 3720 ML POM and EPM 7330 Determine where the PMCS will be based using the NOTE Some types of IEDs must be wired on Should base my host PC on Modbus or Ethernet Is there an existing Ethernet or plans for a future Ethernet Figure 1 Modbus only network After you determine the appropriate base Ethernet or Modbus for the PMCS software the general network architecture will fall into one of the forms illustrated in ru Figures 1 through 4 These figures offer samples of various Bhemat network architecture configurations possible with PMCS I ER s Ethernet rem Gat Protocols Utilized Rae Ethernet Modbus Modbus Multilin Direct via Direct Ethernet ao BE Figure La v boa nae a Figure3 igure 2 Commercial Ethernet an odbus network es d Multilin 269 As the above table shows Modbus RTU is required in all instances whether it is being used as a stand alone network supporting commnet IEDs or
64. et Box which is then connected to the Modbus Concentrator 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 figure provided Figure 19 and Figure 20 Table 4 Commnet IED configuration rules 14 Power Management Control System Chapter 2 Network Design 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 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 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 IED
65. eter 7300 provides over 100 high accuracy three phase measurements Its compact size simple installation and high reliability make it ideal for use in panelboards switchboards switchgear gensets and UPS systems With RS 485 communications it can be integrated into a power management system such as PMCS Instantaneous Measurements e Voltage H In per phase and average e Current per phase and average e Real Power per phase and total e Reactive Power per phase and total Apparent Power per phase and total e Power Factor lead lag per phase and total e Voltage Unbalance e Current Unbalance Frequency Energy 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 54 Minimums and Maximums e Voltage H In per phase e Current per phase e kW KVAR kVA Power Factor Frequency e Sliding 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 Electronic Device IED can take the place of numerous transducers meters and control circuits in a power monitoring system The EPM 7700 provides true RMS measurements of voltage current power and energy complemented by extensive I O capabilities comprehensive logging and advanced power quality functions Ins
66. etwork configuration of the segment is incorrect 46 Check IEDs 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 Check any dual port IEDs to be sure that each RS 485 port is wired to a separate RS 485 network 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 or Repeater does not operate when control power is present contact the GE Resolution Center at 1 888 GE RESOLV Locate and remove the short or incorrect connection Check that the segment conforms to Rules 1 through 5 in Chapter 2 regarding the number of IEDs permitted per commnet segment and wiring requirements and limitations Power Management Control System Chapter 4 Trouble Shooting Symptom Possible Cause Corrective Action 4 No communication to 2 one or more commnet IEDs Intermittent communi cation to an IED Modbus or commnet 1 The IED or a Repeater that segment is not powered on 2 TheIED is not addressed 3 Two or more IEDs on the Modbus Concentrator have the same address 1 The network configuration is incorrect 2 The IED or a Repeater is not powered or has inconsistent power 3 Two or more IEDs on the network have the same address 47 Check that control power
67. etwork even though 32 Modbus addresses are available for use Also unlike commnet s POWER LEADER Repeaters RS 485 repeaters are counted as IEDs because although they have no Modbus address they do act as a drop on the network Modbus Address oo Broadcast not available to user 1 32 e Modbus Concentrators must have addresses in this range Appropriate Usage Supported IEDs Other Modbus native IEDs may also have addresses in this range Modbus native IEDs may have addresses in this range Commnet IEDs must have addresses in this range 33 247 e Table 5 Modbus address range appropriate usage Commnet IEDs are preprogrammed with a factory set address You must change this address immediately upon installation of the IED Refer to the IED s user manual for instructions on assigning an address Because the commnet network accepts a different range of addresses than the Modbus network commnet addresses must be mapped to corresponding Modbus addresses The formula for this mapping is desired Modbus address 267 commnet address to set at IED For example to set a commnet IED to Modbus address 33 the commnet address set at the IED must be 300 Table 6 illustrates address mapping For Modbus Address Set commnet IED Address to 300 301 Table 6 Modbus to commnet address mapping You may want to block commnet address assignments by lineup and or Modbus Concentrator segment For examp
68. 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 also 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 FG 232 RS 485 Oonverter Modbus RS232 wiring Modem Radio Frequency transmission Fiber optic connection Leased line or phone line connection Modem RS 232 wiring FS 485 wiring PS 232 RS 485 Converter Modbus device Figure 6 Example of remote operation using modems 56kbps phone modems radio frequency RF modems and fiber optic modems FOM may be used with PMCS While it is possible to use dial up lines to connect to distant RS 485 networks the vagaries of the phone system and the excessive long distance charges preclude using
69. f electronic loads such as computers ballasts or variable frequency drives the quality of the power system is important With the PQM s harmonic analysis option any phase current or voltage can be displayed and the harmonic content calculated Knowing the harmonic distribution you can take action to prevent overheated transformers motors capacitors and neutral wires and nuisance breaker trips Redistribution of system loading can also be determined Waveform and chart recorder printouts available from the POM assist in problem diagnosis 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 VA demand Load shedding e Power factor control Communication e Ports RS232 front dual RS485 rear e Modbus RTU protocol 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 e Event recorder e Waveform capture e Data logger RS 485 Repeater 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
70. f electronic loads such as computers ballasts or variable frequency drives the quality of the power system is important With the PQM s harmonic analysis option any phase current or voltage can be displayed and the harmonic content calculated Knowing the harmonic distribution you can take action to prevent overheated transformers motors capacitors and neutral wires and nuisance breaker trips Redistribution of system loading can also be determined Waveform and chart recorder printouts available from the POM assist in problem diagnosis 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 VA demand Load shedding e Power factor control Communication e Ports RS232 front dual RS 485 rear e Modbus RTU protocol 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 e Event recorder e Waveform capture e Data logger RS 485 Repeater 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
71. g diagram Figure 24 Floor layout for Case Two He must also bear in mind proper shield grounding considerations each RS 485 IED grounded at only one point and no two IED s grounds connected Rule 4 Section 2 4 Bill checks Table 4 for the commnet wiring rules and finds that he must keep his POWER LEADER Meters on separate commnet networks limit his commnet IEDs to four per segment and keep each segment under 1000 feet unless he uses repeaters The commnet segments he has planned satisfy all these rules Because his cabling limits are met Bill selects Modbus equivalent addresses for the IEDs and adds them to his address chart for future reference His updated address chart is shown in Table 9 Modbus Address 01 02 03 04 Multilin 269 Assembly line 05 Multilin 565 06 Modbus Facility 2 north wall 10 Concentrator Enhanced Facility 2 Segment 1 33 MicroVersa Trip Enhanced Facility 2 Segment 2 34 MicroVersa Trip Enhanced Facility 2 Segment 2 35 MicroVersa Trip Enhanced Facility 2 Segment 3 36 MicroVersa Trip Enhanced Facility 2 Segment 5 37 MicroVersa Trip Enhanced Facility 2 Segment 5 38 MicroVersa Trip POWER Facility 2 Segment 3 39 LEADER Meter POWER Facility 2 Segment 4 40 LEADER Meter POWER Facility 2 Segment 5 41 LEADER Meter POWER Facility 2 Segment 1 42 LEADER EPM MDP Facility 2 Segment 4 43 Overcurrent Rela Spectra ECM Facility 2 Segment 3 44 Table 9 IED Addresses for Case Two B
72. ge ground faults can elevate substation ground potentials Follow local utility best practices and safety procedures to prevent risk of shock or electrocution to personnel and damage to equipment that could result in a loss of protection and communications 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 connected to IEDs with copper wire especially installations where the data communication cable is exposed i e 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 Each type of network Ethernet Modbus and commnet has unique wiring requirements These rules are summarized in Table 13 Further detail is provided A WARNING The National NEC and all applicable local codes must be followed when installing wiring Electrical Code following the table Network Wiring Re
73. heck that PMCS is correctly installed and running installed or not properly and has been configured with the Modbus addresses configured with IED and communication settings of all attached IEDs addresses and communication settings 4 DDE Server not running Check that the DDE Server is correctly installed and running RS 485 host only 5 RS 485 interface installed Ensure that the RS 485 card or RS 232 RS 485 incorrectly or not converter is properly installed at the host PC and that functioning the RS 485 cables are correctly attached to the interface card or converter 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 Ethernet host only 6 Ethernet network down Check the connections at the host PC Ethernet card or improperly connected for loose or improper connections Check with LAN personnel for network wide problems that might be affecting the Ethernet Gateway or host Ethernet host only 7 Ethernet Gateway not Check that the Ethernet Gateway has control power powered not connected and is properly connected to the Ethernet and to the to Ethernet or RS 485 RS 485 ports Make sure that the Gateway has been ports or connected but properly configured for the attached RS 485 networks improperly configured EPM 7700 only 8 Device communication Refer to the XPRESS C
74. hermal capacity required during motor starts If motor load during starting is relatively consistent these learned values may be used to fine tune the acceleration protection The SR469 can also learn the average motor load over a period of time The relay has compete local and remote user interface capabilities A forty character display keypad and LED indicators provide local communication A front panel RS 232 port provides convenient computer access Two rear panel RS 485 ports are provided for remote communication Applications e Medium and large motors e Driven equipment Motors with high inertial loads Protection and Control e Thermal model biased with RTD feedback and negative sequence current e Voltage compensated acceleration e Undervoltage overvoltage e Phase differential protection 60 e Underpower for load loss e Out of step for synchronous motors e Dual overload curves for two speed motors e Reduced voltage starting control e Trip coil supervision for breakers Inputs and Outputs 12RTDs programmable e Five pre defined and four assignable digital inputs e Four analog inputs e Six output relays e Four programmable analog outputs Metering and Monitoring e A V W var VA PF Hz Wh varh demand e Event recorder last 40 e Waveform capture 16 cycles User Interface e 22 front panel LED indicators e 40 character display e Control keys and numeric keypad e RS 232 and two RS 485 ports S
75. hm 2 watt resistor 596 See section titled Termination in this chapter for specific details on Connect Tech RSA85 card and Ethernet Gateway N A no termination is needed on commnet segments 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 specified in the configuration rules of Chapter 2 38 Power Management Control System Chapter 3 Network Wiring and Construction Type of Wire Ethernet 10Base T applications may use any appropriate Category 3 4 or 5 UTP 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 3074F may be used for applications greater 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 outdo
76. host on the Ethernet network e Deliver messages and commands from the host to the attached Modbus and commnet IEDs 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 segment attached to the Modbus Concentrator This is useful to economize the wiring on a given commnet segment POWER LEADER MDP Overcurrent Relay The MDP Overcurrent Relay is a microprocessor based non directional overcurrent relay that protects circuits from phase to phase and phase to ground faults Included with the MDP Overcurrent Relay are four measuring units one 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 Inverse overcurrent including four character istic curves and four values of definite time protection and instantaneous overcurrent pro 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 to 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 parameter
77. ill next checks Chapter 3 for physical wiring requirements and rules He knows he needs Belden 3074F cable for the new RS 485 wiring to extend RS 485 Network 3 to the RS 485 repeater for the jump to Facility Two and to make the connection to the Modbus Concentrator from the RS 485 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 28 Power Management Control System Chapter 2 Network Design 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 configures 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
78. illustrates this rule 16 Power Management Control System Chapter 2 Network Design RS 485 IEDs E Y 31 Max MC I a Modbus Concentrator Tien Commnet IEDs up to 32 per Modbus Concentrator 215 total per RS 485 network Figure 10 Network illustrating Modbus Rule 6 7 A single RS485 network may have no more than 4000 feet of cable total cable length not distance between IEDs Figure 11 illustrates this rule RS 485 IEDs i 31Max 300 ft 200 ft Total Cable Length 4000 feet 1500 ft 300 ft 1500 ft Figure 11 Network illustrating Modbus Rule 7 RS 485 repeaters may be used to extend the range beyond 4000 feet A single RS 485 repeater may be used to provide a 4000 foot extension and each additional repeater in a sequence extends the range by another 4000 feet Figure 12 illustrates this rule Host 100 ft mM d ER 500 ft 700 ft RS 485 Repeaters With 2 Repeaters Total Cable Length lt 8000 feet 4000 ft 200 ft 2500 ft Figure 12 Network illustrating Modbus Rule 8 9 There may be no more than two RS 485 repeaters A 10 A 17 between any two RS 485 IEDs
79. in Chapter 2 OPTO 22 AC38 RS 485 Isolated Multidrop Repeater EPM8000 Power Quality Meter PQMII When continuous monitoring of a three phase system is required the Power Quality Meter POMII 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 added for specific applications These include basic alarm on over undercurrent or voltage unbalance demand based load shedding and capacitor power factor correction control More complex control is possible using the four switch inputs which also can be used for status such as breaker open or closed and flow information The POM is a datagathering IED for a plant automation system that integrates process instrument and electrical requirements All monitored values are available via two digital RS 485 communication ports running the Modbus protocol If analog values are required for direct interface to a PLC any of the monitored values can be output as a 4 20 mA signal to replace up to four separate transducers A process Power Management Control System Appendix A IED Descriptions variable can be measured using the analog input An RS 232 communication port can be connected to a PC for simultaneous access of information by other plant personnel via the front panel With increasing use o
80. ine of POWER LEADER power management products PMCS seamlessly integrates with the comprehensive family of POWER LEADER IEDs as well as with many new Modbus RTU and Ethernet IEDs and 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 Additional features include Viewing metering information at remote locations Historical trending of any metered data Tracking the status of protective and metering IEDs Alarm and event management Report generation Waveform capture and analysis Remote control of IEDs 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 PMCS 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
81. ious components before you read the rest of this book Chapter 2 discusses the rules and requirements for designing the network on paper how far apart IEDs may be located addressing the IEDs limits on the number of IEDs Chapter 2 also provides several case studies as examples of how to design a PMCS network that will fit your needs After studying this chapter and the case studies you should understand how to lay out networks based on PMCS Chapter 3 explains the details of actual network construction types of wire required termination resistors how to wire 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 PMCS compatible IEDs and a list of reference publications Power Management Control System Chapter 1 Introduction Chapter 1 Introduction Figure 2 shows a Modbus and Ethernet network Figure 3 shows a Modbus commnet network 1 1 Typical Systems Figure 4 shows an Ethernet Modbus commnet network demonstrating the integration of all three protocols The PMCS software is capable of operating on either of two platforms Figure 5 shows an example of an Ethernet based host servicing native Ethernet devices Modbus devic
82. is supplied to all IEDs Check that two LEDs are lit on each Repeater indicating that control power is present If the IED or Repeater does not operate when control power is present contact the GE Resolution Center at 1 888 GE RESOLV Set the commnet address at the IED and configure the Modbus Concentrator to recognize the IED and assign ita Modbus equivalent address Enter the Modbus equivalent address into the PMCS Check the Modbus Concentrator and IEDs for duplicate address assignments Change the address of the affected IED at the IED and the Concentrator then attempt to communicate with the original address to see if another IED has that address Check that 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 Power Management Control System Chapter 4 Trouble Shooting This page left blank intentionally 48 Power Management Control System Appendix A IED Descriptions 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 4
83. le start with 40 for the first lineup attached to one Modbus Concentrator 50 for the second lineup attached and so on Addresses must be in the range 33 to 247 The example presented in Figure 18 demonstrates this Increment the individual IEDs in each lineup by one For example if the first IED in a lineup is Modbus address 101 the second IED should be 102 the third IED should be 103 etc Addresses may be entered or changed at any time that control power is present Figure 21 illustrates a sample network with IED addresses Table 7 provides details of the IEDs shown in Figure 21 22 Power Management Control System Chapter 2 Network Design sihes f ains H Hu Figure 21 Sample network with IED addresses 23 Power Management Control System Chapter 2 Network Design Attached Modbus Commnet Equipment IEDs Address Address Lineup 1 Modbus Concentrator 1 001 POWER VAC 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 commnet 050 317 MDP Overcurrent Relay with commnet 051 318 EPM
84. maging surges in data communication lines Data line surge protection is not required for fiber optic connections 10Base T specifications and rules 10Base T Ethernet uses CAT 3 4 or 5 twisted pair cable depending on the installation Maximum Minimum length of segments For a 10Base T LAN the maximum length of a segment is 100 meters 328 ft The minimum length of any cable is 2 5 Meters or about 8 ft This minimum length is of particular concern when a device is located in close proximity to the hub Maximum number of segments A 10Base 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 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 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 10Base FL specifications and rules Maximum Minimum length of segments For a 10Base FL LAN the maximum length of a segment is 2000 meters 6500 ft The minimum length of any cable is 2 5 Meters or about 8 ft This minimum length is of particular concern when a device is located in close proximity to the hub Maximum number of segments A 10Base FL LAN can consist of up t
85. mergency source fail e Type l 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 for emergency and standby applications interlocked MX250 Microprocessor Controller GE Zenith Controls MX250 advanced microprocessor 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 all of the most commonly used options for today s transfer switch operation It also may be equipped with our ZNET250 remote communication interface for use with annunciators modems or PC control The MX250 manages switch operation via a convenient touchpad that provides indication setting and diagnostic capabilities As an embedded digital controller the device offers high reliability and ease of unattended operation across a range of applications The GE Zenith MX250 Microprocessor offers the following features Power Management Control System Appendix A IED Descriptions e Multipurpose display LEDs for continuous monitoring of switch position and source availability a four line by 20 character backlit LCD display for settings functions programming and annunciation e Through the door programming and display e Simplified keypad entry menu driven system is designed for ease of use e Built in diagnostics with displa
86. nd 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 CTs 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 computer equipped with Modbus and Ethernet communications It provides an interface for transferring messages between an Ethernet network and up to four Modbus networks containing up to 31 IEDs each serving as a traffic controller to pass messages between the Modbus network s and Ethernet network When the Gateway receives a message from the Ethernet or Modbus network it translates the message Power Management Control System Appendix A IED Descriptions protocol and forwards the message to the correct destination The Ethernet Gateway converts messages from the Modbus RTU protocol to Ethernet s TCP IP protocol and vice versa directly No interpretation or concentration of IED data is performed by the Gateway The Ethernet Gateway s major functions are e Relay data from Modbus network s to the PMCS
87. net performance recommendations 21 2 8 Addressing the IBDS ined RE ed Pa a ied node a P ac n 21 2 9 Multiple RS 485 Networks Addressing essent 25 2 10 System EX pansion i toc e E en Fr eet ier te e eee E ete HER RE Eo toon 25 2 11 Case Studies nee a Uc i HC eR E OR tete e 25 Case Study One oinnes eq be iate te er E idet eet 25 RK eie het i eH t e pdt i iE HE ie E a EE ED nat 27 lerne 29 CaSO EE 30 Power Management Control System Table of Contents Case Reese Ar Renan eadem idea a e ds 33 Chapter 3 Network Wiring and Construction nennen 37 3 1 Wiring Requirements iet as ed ae e bed ie e 38 Type Ob EE 39 POSTMAN At OD rs Seeks ahs tere ud ui edente ero ap Pt a tet Pee EORR tales 39 shield Grounding sr eua ede EH EU e ed ced eoe 39 3 2 Modbus Commnet Integration ss 39 Winna Ee ET 39 3 3 Modbus Ethernet Integration ss 41 3 4 Local Configuration of IBDS 5 te edie getting de 41 3 5 Applying Power to the System ss 41 3 6 Software Loading and Startup sens 41 Chapter a Prouble ShOODBB sies coco Eege edes 42 4 1 Communication Network Trouble Shooting eese 42 4 2 Host Trouble Shooting Age NEEN Ee 43 4 3 TED Tro ble Shootmng ie bee tete eene de Met thee Meet terio 43 4 4 Equipment Trouble Shooting ss 43 4 5 Product Service Procedure RD D IH Ree recipe 43 4 6 Trouble Shooting Guide 5 ge Ae et c e ER Rede 44 eu PT
88. nts of the EPM 7300 plus on board data storage setpoints standard digital I O and an optional Ethernet port and optional builtin modem either of which can be used as a gateway to as many as 31 serial devices 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 PreventativeMaintenance 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 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 1 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 modem amp infrared ports e DNP3 00n serial modem amp infrared ports total harmonic On Board Data Logging e Scheduled or event driven logging of up to 32 parameters e Sequence of events amp min max logging e Setpoints for Control and Alarms e Setpoint on any parameter or condition e 1 second operation Inputs and Outputs e 4 digital inputs for status counter functions e 4relay outputs for control pulse functions e Optional Analog inputs and outputs Power Management Control System Appendi
89. o 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 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 Reference Commnet IED configuration rules Figure Modbus Concentrator 9 limitations Commnet l wiring limitations 2 3 4 5 6 Each Modbus Concentrator supports up to eight commnet segments Each commnet segment supports up to four commnet IEDs 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 per segment limit No connections between commnet segments are permitted Each
90. o maintain accuracy at all times The relay is specifically designed 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 negative sequence 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 256 cycles of oscillography data The relay performs self tests 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 Complete time overcurrent Complete instantaneous overcurrent e Directional overcurrent control e Undervoltage and overvoltage e Negative sequence voltage e Undervoltage automatic restoration e Bus
91. o serve as remote viewing stations for the IEDs on segments 3 and 4 One Modbus Concentrator to support the commnet IEDs below One POWER LEADER Electronic Power Meter One Spectra Electronic Control Module One Enhanced MicroVersaTrip C trip unit He checks the list of communication protocols in Table 1 and notes that most of his IEDs communicate on Modbus but because he wants to use several commnet IEDs in the Machining area he ll need a Modbus Concentrator As well the Modbus IEDs communicate at different baud rates and Bill makes a note that they should be placed on separate RS 485 networks for improved performance He decides to use four RS485 networks supported by the recommended communications card at the host PC 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 Next 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 RS 485 network one after another Bill calculates the cable length of each RS 485 network and finds that none are over the 4000 foot limit so he won t need to use any RS 485 repeaters The commnet segments 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 dat
92. oVersa rip trip units Three POWER LEADER Meters with waveform capture e One POWER LEADER EPM One POWER LEADER MDP Overcurrent Relay OneSpectra 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 RS 485 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 Management Control System 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
93. of power consumption and alarms Now however it wants the host to be based on Ethernet rather than Modbus which requires the use of an Ethernet Gateway In Case Four GHO Corp wishes to install a PMCS power management system using both Modbus and commnet based IEDs with the host based on Ethernet Case Five demonstrates the use of dual port RS 485 IEDs 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 ports Case Study One GHO Corp has assigned its plant engineer Bill the task of designing and installing a simple power management system GHO Corp wishes to use PMCS to monitor and control several Modbus power management IEDs Bill s first task is an easy one He must choose a platform on which the PMCS host will reside Using the flowchart in Section 1 1 he makes his decision There is no existing Ethernet network in his facility nor are there any plans for one 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 IED
94. ommnet IEDs require Modbus Concentrators to be recognized by the PMCS 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 RS 485 network over to Facility Two with RS 485 repeaters Bill decides that it will be easier and more cost effective to run a single long RS 485 segment with a pair of RS 485 repeaters than to extend six commnet segments An added benefit each repeater uses optical isolation between its incoming and outgoing lines eliminating harmful ground loops that can result when the ground potential between two structures is different For even greater electrical isolation Bill could have used an optical fiber link between the two remote locations Bill turns to his floor layout to see just where the wiring could be run and how much distance it must cover He knows where his host PC is located and realizes that he will have to interrupt the Modbus network at one or more locations to insert Modbus Concentrators to support his commnet IEDs He maps where his IEDs must be located and based on this information where
95. one port poses no additional cost burdens or configuration concerns Bill 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 Ethernet Gateway will sit He then measures the cable runs required to connect the IEDs to the Ethernet Gateway keeping in mind that the RS 485 rules require him to daisy chain the IEDs one after another His floor layout is shown in Figure 25 RS 485 networks terminated at Ethernet Gateway Network 4 19 2 kbaud Bil s Office i em RR Ethernet Gateway 150 Lathe Area Ethernet 350 S Multiin R745 Transformer ManagementRelay 150 Network 1 9600 baud i Multilin 565 FeederManagement Relay Milling Area Network 3 19 2 kbaud fk Multiln SR 469 Motor ManagementRelay 600 Machining Area EPM 3720 Electronic Power Meter Network 2 2400 baud Assembly Line Area RW PLC 90 30 pr di Programmable Logic Controller GHO Corp Machine Shop network wiring diagram 600 M ultilin 269 Motor Relay 550 Terminating Resistors 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
96. onnector strip about 3 inches off the outer jacket of each cable Label one cable RS 485 IN and the other cable RS 485 OUT 67 Micro 90 PLC NOTE Micro 90 PLCs withfirmware revisions V3 10 and higher support 2 wire Modbus connections directly the conversion from 4 wire to 2 wire is only needed with earlier versions To wire the communications port of a PLC Micro 90 to an RS 485 network you will need two 100 inch lengths of Belden 9271 cable covered with sleeving and a B amp B Electronics 485FWTW or equivalent two to four wire converter a female DB 25 connector and a male DB 15 connector The DB 15 connector should have the following jumper connections made inside the connector e Pin6to Pin 15 e Pin8toPin 14 Connect the two cables to the B amp B 486FWTW as shown in Figures C 1 and C 2 120 ohm ye terminating resistor wer 2 wire cable ae RS 232t0 RS 485 RS 232to RS 485 Last device Converter Converter dme 4 wire cable HOST FC Series 90 Micro RS 232 port RTU port Figure C 1 RS 485 two wire Modbus network PMCS Modbus Network B amp B 485FWTW Micro 90 RTU Port 2 wire RS 485 2 4 wire converter 4 wire RS 422 Data A SFDA loo 10 FDA Data B 16 RDB loo 11 FOB 4 2TDA loo 12 SDA 14TDB loo 13 SDB O Signal Ground 7 Signal Ground Jo 7 Signal Ground Shield O o Frame Ground 1 Frame Ground jp
97. ons l Modbus is preferred 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 information until it is asked by the PMCS to transmit its data to the host If the number of commnet IEDs is unevenly distributed the Concentrator takes longer than necessary to poll each segment 3 Keep data intensity in mind when connecting more than eight commnet IEDs to a single Modbus Concentrator If it is necessary to connect more than eight commnet IEDs to a single 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 1 Spectra MicroVersaTrip trip unit Enhanced MicroVersa I rip C and D trip units POWER LEADER MDP Overcurrent Relay Spectra Electronic Control Module POWER LEADER Electronic Power Meter 6 POWER LEADER Meter OU B N 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 sh
98. ontrol System Chapter 2 Network Design 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 RS 485 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 1 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 as commnet IEDs Figure 15 illustrates this rule Modbus Concentrator 4 commnetlEDs segment max Figure 15 Network illustrating commnet Rule 1 2 A commnet segment may have no more than 1000 feet of cable between the Modbus Concentrator and the final IED on a segment Repeaters may be used to extend this range see Rule 3 Figure 16 illustrates this rule Modbus Concentrator 300 ft
99. ors in conduit above grade For below grade applications Belden 83702 shielded 16 AWG cable is recommended Belden 83702 is rated for direct burial and air plenum nonconduit applications but the length limits for this cable are two thirds of the lengths specified in the configuration rules of Section 2 1 For example a network segment connecting up to four IEDs may have a total cable length of no more than 667 feet of Belden 83702 versus the 1000 foot limit on total cable length for Belden 8719 Termination RS485 cables must be terminated at each end of the network with a 120 ohm 2 watt 5 tolerance resistor IMPORTANT NOTE FOR CONNECT TECH CARD USERS 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 network s should be terminated with the usual 120 ohm resistor A IMPORTANT NOTE FOR ETHERNET GATEWAY USERS The POWER LEADER Ethernet Gateway provides internal termination for its four RS 485 ports No terminating resistor is needed at the POWER LEADER Ethernet Gateway A See Figure 9 for an example of the cable run terminated at the final IED on the network Shield Grounding Modbus The RS485 cable shield must be grounded at only a single point on each RS485 wire Connect the shield to the ground terminal at the Ethernet Gateway or RS 485 interface
100. ost PC based on Ethernet requires an Ethernet Gateway Rather than use an RS 485 interface card connect the Modbus networks to the RS 485 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 to the PMCS Be sure to set the IED address at the IED and at the host software set the communication speed and configure any necessary settings For detailed directions on setting addresses communication speed and protection parameters refer to the user guide for each IED 4l 3 5 Applying Power to the System A WARNING Voltages hazardous to personnel and equipment may be present at the power connections Once yov ve installed the PMCS network you should apply power to the network from the bottom up Follow this procedure when applying power to the system for the first time 1 Make sure that all communications wiring has been correctly connected to each IED and that the system matches the plan exactly meeting all rules and requirements explained in this manual 2 Make sure that all wiring for control power to IE
101. ou can benefit from Less downtime Identify and correct problems before they lead to loss of power and or costly damage to loads such as production equipment and computers Reduced energy costs Find ways to conserve power correct billing errors reduce peak usage surcharges and leverage interruptible rates Improved predictive maintenance Identify simple maintenance tasks so you can make scheduled corrections before they become problems Faster corrective maintenance Quickly pinpoint 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 shopfloor or substation presence Higher productivity Free up maintenance and repair personnel to perform other needed duties Improved power quality Identify sources of dirty power otherwise invisible and take corrective action 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 is fast becoming an absolute necessity for efficient facility management and increased profitability What is PMCS PMCS is the latest Power Management Control software from GE Industrial Systems robust l
102. ould be 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 1 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 21 Power Management Control System Chapter 2 Network Design The host PC does not require an address due to the master slave organization of the PMCS NOTE Per the EIA485 standard each RS 485 network supports up to 32 drops or electrical drains on the network However the Ethernet Gateway or RS 485 interface card counts as one drop Thus only 31 other IEDs may be attached to each RS 485 n
103. power is connected to the network interface card in the host PC if you are using an Ethernet Gateway make sure that its control power is connected Ensure that the Ethernet network interface card in the Host PC is properly connected and seated in its expansion slot 3 Ifusing an RS 485 interface card s check that the card s is seated properly in its slot and that the proper terminating resistors are applied 4 3 IED Trouble Shooting To determine if an IED is causing network problems disconnect it from the network then refer to the appropriate user manual for 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 to the appropriate user manual for the trouble shooting procedure 4 5 Product Service Procedure Call the GE Resolution Center at 1 888 GE RESOL V if you have any additional questions or problems 43 Power Management Control System Chapter 4 Trouble Shooting 4 6 Trouble Shooting Guide Symptom Possible Cause Corrective Action 1 No communication to 1 Host PC not powered Check that the host PC has control power and is any IEDs on the running correctly no PC error conditions exist network 2 Windows 2000 SP2 not Check that Windows 2000 SP2 is properly installed and running correctly running correctly no crashes or system lock ups 3 PMCS not properly C
104. quired Shield Grounding Termination 10Base T or 10Base FL See 10Base T or 10Base FL wiring standards Check with your LAN administrator Ethernet CAT 4 or 5 UTP Rated 300V A 600V requirement may be satisfied by applying 600V tubing to the cable Modbus Each RS 485 network should be grounded at the host and at the RS 485 OUT port of each IED with no continuity between wire segment shields See Section 2 4 rule 4 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 tubing to either the Belden 9841 or Alpha 6412 No substitutions are permitted Commnet Indoors outdoors in conduit above grade Belden 8719 600 V shielded instrumentation cable 16 AWG 19X29 Each commnet segment s cable shield must be grounded at the Modbus Concentrator at the port to which it is connected Below grade applications Belden 83702 Table 13 Wiring requirements See 10Base T or 1 0Base FL wiring standards Check with your LAN administrator The RS 485 cables must be terminated at each end of the network The terminator should be a 120 o
105. r Case Four Chapter 3 provides physical wiring requirements and rules For commnet wiring he ll use Belden M8719 cable For RS 485 wiring he ll use Belden 3074F cable and the correct terminating resistors for both ends of the RS 485 networks Bill installs the IEDs at the equipment according to the instructions in each user manual and runs the RS 485 cable for each RS 485 network from the Ethernet Gateway to each Modbus IED in daisy chain fashion one IED to the next and terminated at each end Bill runs the commnet cable from the Modbus Concentrator for each commnet 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 sets the local address at each commnet IED according to what he wants the Modbus equivalent address of each IED to be He configures the Modbus Concentrator either manually or with the autoconfigure 32 option following the instructions in the Concentrator User Manual During configuration the Concentrator probes each of its commnet 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 LAN administrator to determine which IP addresses are availa
106. rameter of Electrical Power e True RMS with 0 15 Accuracy e Extensive On Board Storage for 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 ASCII 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 II 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 the MM 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 MM2 using two contactor outputs and two auxiliary outputs One analog input can be programmed by the user A programmable undervoltage auto restart function is available Motor protection features for the 63 Error No index entries found most common causes of failure are provided to prevent costly shut downs and rewinds These include overload phase unbalanc
107. rcuit breaker when one of the following user defined parameters is exceeded parameters identified by an asterisk are optional features of the trip unit Overcurrent Long time e Shorttime e Instantaneous e High range instantaneous e Ground fault e Zone select Protective relays e Overvoltage Power Management Control System Appendix A IED Descriptions e Undervoltage e Overcurrent e Voltage unbalance e Current unbalance e 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 It can measure or calculate values of the following parameters e RMS current phases A B and C e RMS voltage phases A B and C e Watts phases A B and C e Volt amperes phases A B and C e Watt hours phases A B and C e Frequency e Power factor Modbus Concentrator The POWER LEADER Modbus Concentrator allows PMCS to communicate with POWER LEADER commnet IEDs The Modbus Concentrator is an RS 485 native IED that collects data from up to 32 attached POWER LEADER commnet IEDs and communicates this data to the PMCS across the POWER LEADER Modbus communication network In this respect the POWER
108. rea 04 2 RS 485 Port B Modbus Concentrator EMVT C trip unit 4 Spectra ECM Machining area 34 35 4 POWER Machining area LEADER EPM Machining area 05 Machining area 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 each RS 485 network 34 He installs the IEDs according to the instructions in each IED s user 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 Multilin IEDs have two ports he is careful to connect only one RS 485 port per IED The Modbus Monitors are also RS 485 dual port but Bill carefully follows the wiring instructions to correctly connect them to the RS 485 networks The A port of each Monitor is connected to one RS 485 network and the B port of each is connected to another network He must also bear in mind proper shield grounding considerations each RS485 IED grounded at only one point and no two IEDs grounds connected Rule 4 Section 24 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
109. riginally requested it For further details refer to the PMCS Network and Device Configurator DDE Server User s Guide GEH 6510 Power Management Control System Chapter 1 Introduction 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 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 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 connection between the host PC and the network of IEDs Your host will require either an Ethernet communications card an RS 485 communications card or an RS 232 RS 485 converter An Ethernetbased 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 b
110. rks PMCS and the Ethernet Gateway require TCP IP to be installed on the host computer The drivers for the TCP IP 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 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 PMCS stamps each
111. rved 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 a CAUTION The four IED per segment limit must 20 Box with the Modbus Concentrator are provided in Figure 19 and Figure 20 Junction Boxes are not counted as IEDs for purposes of the four IED per commnet segment limit Figure 19 is an example of a Junction Box used to create a node connecting four commnet IEDs to a Modbus Concentrator Figure 20 is an example of a Junction Box with Repeaters observing the four IED per segment limit the two Repeaters and the Junction Box do not count as IEDs commnet IED to Modbus Junction commnet Concentrator Box IED commnet commnet IED IED Figure 19 Network illustrating commnet Rule 6 commnet IED Long range commnet segment to POWER x POWER Modbus rd LEADER 3 LEADER Concentrator D Repeater Repeater commnet commnet commnet IED IED IED 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
112. s can be viewed e RMS current e RMS voltage e Watts 57 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 e Waveform capture These parameters can also be viewed at the host computer Requests may be entered locally or from the host 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 RS485 ports for connection to one or two separate RS 485 networks Up to two Modbus Monitors may be installed on a single RS485 network providing multiple locations to view data Features e Easy to use menu driven user interface e Large high visibility 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 logged by the PMCS Event Logger regardless of which network the events happened on 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 the range of the commnet segment to be extended beyond the 1000 foot limit
113. s 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 RS 485 network one after another His floor layout is shown in Figure 22 25 Power Management Control System Chapter 2 Network Design Terminating _ Resistors Lathe Area Pss EPM 3720 Electronic Power Meter ER Bil s Office 350 Milling Area Multilin 565 FeederManagementRelay 350 EPM 3720 Main power feed Electronic Power Meter Machining Area EPM 3720 Assembly Line Area Electronic Power Meter 550 550 Multilin 269 200 MotorRelay PLC 90 30 Programmable Logic Controller GHO Corp Machine Shop network wiring diagram 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 che
114. s to a network after it has been installed may require rewiring the network CAUTION Wire run distances mentioned in the configuration rules assume application above grade or in conduit For below grade applications refer to Section 3 1 Wiring Requirements Regardless of which platform is supporting the RS 485 networks Ethernet Gateway RS 485 card or RS 232 RS 485 converter the following rules apply to each individual RS 485 network 15 l 2 3 Incorrect mixed baud rates on Each RS 485 network may support up to 31 Modbus IEDs Figure 7 illustrates this rule See the exception below Figure 6 Figure 7 Network illustrating Modbus Rules 1 and 2 Exception to Rule 1 Some types of IEDs must be wired on dedicated private serial network segments one IED per serial Modbus line The 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 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 E EPHM 11 Meter 18 2 kbmd Er HA Multis POM 15 2 Ebaudi cpl 19
115. t 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 that 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 a time establishing communication with each one Refer to the IED instruction manuals for procedures for communicating with each IED 4 2 Host Trouble Shooting If the procedure for communication network trouble shooting does not isolate the problem use the following procedure to determine if the host is at fault 1 If the host is at fault it probably will not be able to communicate with any IED If this host can communicate with one or more IEDs return to Section 4 1 2 Check that
116. t 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 Power Management Control System Chapter 2 Network Design 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 System Chapter 2 Network Design 2 1 Modbus Rules The most basic network configuration for PMCS assumes that the software is running on a host PC supporting one or more RS485 networks on the Modbus protocol See Fig
117. t panel indicate status of the SR489 the generator and the output relays A front panel RS 232 port allows easy local computer access Two rear panel RS 485 ports provide remote access Data communication rates range from 300 to 19 200 baud All data can be transmitted communications ports to PMCS software simultaneously through the three Application e Synchronous or induction generators e Primary backup and cogenerator Protection and Control e Phase differential e 100 stator ground e Ground overcurrent e Anti motoring reverse power e Loss of field e Negative sequence overcurrent e Instantaneous overcurrent startup e Voltage restrained phase overcurrent e Overexcitation Volts Hz e Undervoltage and overvoltage e Voltage phase reversal e Underfrequency and overfrequency e Stator overtemperature e Bearing overtemperature vibration e Inadvertent generator energization e Sequential tripping logic e Breaker failure detection e Overspeed e VT fuse failure detection e Trip coil supervision e Four analog outputs four analog inputs e Seven digital inputs 12 RTD inputs Metering and Monitoring e Metering A V W var VA Wh varh PF Hz e Demand values AW var VA e Event record last 40 events e Waveform capture 16 cycles User Interface e 40 character display and keypad e One RS232 port two RS 485 ports 61 SR745 Transformer Management Relay The SR745 is a high speed multiprocessor based
118. t requiring a relay test set With the use of the RTD 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 metering of the motor thermal capacity Installing a 239 relay in a motor starter for protection and monitoring of small to medium sized motors will minimize downtime due to process problems 49 Application e Small to medium sized motors e Pumps conveyors compressors fans sawmills mines e Variable frequency drives Protection e Overload 15 selectable curves e Phase short circuit Locked rotor mechanical jam e Thermal memory lockout e Single phase unbalance e Ground fault Overtemperature thermistor e Additional three RTDs optional e Undercurrent Trip 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 offering a wide range of protection monitoring and diagnostic fe
119. tantaneous Measurements e Voltage H In 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 Power Factor lead lag per phase and total e Voltage and Current Unbalance Frequency Energy Imported exported absolute and net kWh amp kVARh 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 monthly GE Fanuc PLC 90 30 GE Fanuc s Series 90 30 Programmable Logic Controller PLC is a family of controllers 1 0 systems and specialty modules designed to meet the demand 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 Power Management Control System Appendix A IED Descriptions can provide control for a wide range of applications such as high speed packaging 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 PLC 90 70 heading
120. the Concentrators will be mounted Next he plans the commnet segments and measures the cable runs required for each segment to connect the IEDs to the Modbus Concentrator keeping in mind that the commnet rules require him to daisy chain the IEDs one after another unless he uses a Junction Outlet box His floor layout is shown in Figure 24 27 Power Management Control System Chapter 2 Network Design RS485 networks terminated at host PC Bill s Office Network 4 19 2 kbaud Lathe Area L 300 350 3 Ges EPM 3720 E 8 100 H Milling Area o p Network 3 19 2 kbaud x E u N 600 eu a i M ultilin 565 FeederManagementRelay EPM 3720 El at main power feed E S 8 Machining Area N N Y EPM 3720 E 600 Assembly Line Area e SS m Multilin 269 PLC 90 30 iX Programmable Logic Controller RS485 repeater Terminating Resistor Long range RS485 cable run 3500 feet Facility Two ee RS 485 repeater Terminating Resistor Modbus Concentrator CommnetSegment1 Segment5 PLEPM EMVT EMVT EMVT POWER LEADER Meter Segment2 Segment4 EMVT EMVT MDP POWER LEADER Meter Segment3 POWER LEADER Meter EMVT GHO Corp Machine Shop network wirin
121. 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 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 RS 485 and speaks to them using the Modbus RTU communications protocol The heart of PMCS is a piece of software called 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 More sophisticated
122. this as a twenty four hour a day connection Leased lines dedicated to this purpose provide a viable alternative to a constant long distance telephone connection For further information on using modems for long range operation of PMCS contact your GE sales representative Power Management Control System Chapter 1 Introduction 1 8 Supported IEDs protocol and maximum communications speed for PMCS supports a wide variety of GE and third party Modbusbased IEDs IEDs must power management IEDs These IEDs are listed in Table 1 along with their function communications Commnet communicate through the Modbus Concentrator IED Name Function Communications Protocol Modbus Speed 239 Motor Protection Relay Protection Control Modbus RTU 19 2 Kbaud 269 Plus Motor Management Relay Protection Control Modbus RTU 2400 baud 565 Feeder Management Relay Protection Control Modbus RTU 9600 baud 735 Feeder Relay Protection Control Modbus RTU 19 2 Kbaud GE Zenith Generator PLC Series 90 70 Metering Control Modbus RTU 19 2 Kbaud GE Zenith MX200 Microprocessor Controller Protection Control Modbus RTU 19 2 Kbaud GE Zenith MX250 Microprocessor Controller Protection Control Modbus RTU 19 2 Kbaud EPM 7330 Metering Modbus RTU 19 2 Kbaud EPM 3710 Meter Metering Modbus RTU 19 2 Kbaud EPM 3720 Meter Metering Modbus RT
123. tion 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 operating 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 9650Q 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 EPM 7700 devices require a separate network configuration beyond connecting the devices to the Ethernet LAN Please refer to the following PMCS technical documentation for complete network configuration rules and guidelines GEH 6514 PMCS Read This Book First Refer to the section titled Configuring the EPM 7700 Device Network DEH 40035 GE 7700 Gateway User s Guide Refer to the section titled EPM 7700 Network Configuration EPM9450Q and EPM9650Q devices require separate network configuration beyond connecting the devices to the Ethernet LAN R
124. tions ports Do NOT connect the shield at this IED Instead connect the shield of the incoming RS 485 cable to the shield of the outgoing RS485 cable skipping the Multilin 565 Rules of thumb RS 485 cable ground should always be connected at the previous IED never upon arrival at an IED All RS 485 IEDs must have either two communications cables attached or one communications cable and a terminating resistor RS 485 card RS232 R S 485 converter Multiple Serial P ort or Ethernet Gateway RS 485 port connected athost Network Connections x Shield c 120 ohm terminating resistor ConnectTechRS 485 cards require a 600 ohm resistor in place ofthe 120 ohm terminating resistor RS 485 Two wire twisted shielded pair cable RS 485 IED 1 Shield not connected at first IE D RS 485 IN Shield En T Shield connected at first IED RS 485 OUT Shield not RS 485 IED 2 connected atlED ja RS 485 IN Shield Y Shield connected atlED RS 485 OUT z Shield not RS 485 IED 31 connected N atlED iB AOS IN Shield o J L g DER TT 120 ohm terminating resistor Figure 9 Network illustrating Modbus Rules 4 and 5 6 A single RS 485 network may have up to 215 commnet IEDs attached to it via POWER LEADER Modbus Concentrators Figure 10
125. tory with respect to and assumes no responsibility for the accuracy completeness sufficiency or usefulness of the information contained herein No warrantees of merchantability or fitness for purpose shall apply O Copyright 2000 2003 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 a registered trademark of Modicon Inc Power Management Control System Getting Started 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 AIL IEDs mounted All IEDs wired to control power and energized 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 The RS485 interface card RS 232 RS 485 converter or Ethernet Card is installed and functioning correctly e Any Ethernet Gateways or Modbus
126. ure 1 for an example of this configuration Table 2 explains the configuration rules for PMCS networks based on the Modbus platform Commnet IEDs may be integrated through the Modbus Concentrator see Table 4 for commnet wiring rules Host PCis Follow these rules for the based on host And these rules for the attached Modbus network s Modbus 1 The host PC can support 1 Each Modbus network supports up to 31 physical Modbus IEDs up to 256 independent and up to 247 Modbus addresses This is possible because Modbus networks The commnet IEDs attached to Modbus Concentrators occupy actual number is Modbus addresses but do not create an electrical drain on the RS determined by the 485 network and thus are not counted as physical Modbus IEDs communication cards 2 Each Modbus network must be properly terminated at each end installed in the host PC of the network See Section 2 4 see below i 3 Maximum cable length of each Modbus network is 4000 feet See 2 The Modbus networks are notes on using repeaters to 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 4 All Modbus IEDs attached to a single RS 485 network must An option for more communicate at the same baud rate See Table 1 for Modbus limited systems is an RS IEDs communication speeds 232 RS 485 converter 5 RS 485 cable shields must be
127. ven the most cost conscious control applications The Micro PLC is a perfect solution for such applications as packaging industrial machinery material handling and printing 55 EPM 5000P 5200P 5300P 5350P The EPM 5000P 5200P 5300P 5350P advanced multifunction monitoring system replaces all individual single function meters and transducers This monitor measures volts amps frequency and all 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 THD K factor and harmonic waveforms The EPM 5350P offers the following features other than in the series e Ethernet TCP IP The 5000P 5200P 5300P 5350P device series offers the following features e Measures Volts Amps Watts Vars VA PF Frequency Watt Hour VA hour VAR hour e Measure Harmonics to the 31st Order e Provides Captured Waveform of Voltage and Current Set Point e Control With Logical Descriptors Relay Outputs and Pulse Outputs Max and Min for e Ten Channels of Analog Outputs 0 1 or 4 20mA e KYZ Pulse Outputs For EPM 5200P MicroVersaTrip C and D and Spectra MicroVersaTrip Trip Units PMCS supports three varieties of this popular line of electronic trip units the Enhanced MicroVersaTrip C Enhanced MicroVersalrip D and the Spectra MicroVersaTrip MicroVersaTrip trip units act to trip the ci
128. which records waveform data for faults inrush or alarm conditions The autoconfiguration function eliminates the need for any special CT connections by having all CTs connected in wye Application e Small medium and large power transformers Protection e Percent differential e Adaptive harmonic restraint Multiple overcurrent elements e Adaptive time O C elements e Underfrequency e Frequency rate of change e Overexcitation Power Management Control System Appendix A IED Descriptions Multiple setpoint groups Metering and Monitoring e All currents e THD and harmonics e Demand e Percent of rated load e Harmonic analysis e Tap position e Ambient temperature e Analog transducer input e Waveform capture and playback e Simulation mode Inputs Outputs e Three analog transducer inputs e l6digital logic inputs e Seven analog transducer outputs e Nine control outputs Additional Features e FlexLogic programmable logic e Auto configuration vector group compensation Dynamic CT ratio mismatch correction e RS 232 and RS 485 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 t
129. wiring diagram 600 550 E PLC 9080 Programmable Logic Controller Multilin 269 Motor Relay Terminating Resistors 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 IEDs He checks Section 2 7 and sees that he can assign his IEDs any Modbus address between 1 and 247 He selects addresses and records them for future reference The address chart is shown in Table 8 IED Type Physical Location Modbus Address o Millin 02 EPM 3720 03 04 05 06 26 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 correct terminating resistors at both ends of each RS 485 network He installs the IEDs according to the instructions in the user manual for each IED He then makes connections to the RS 485 communications cable in daisy chain fashion one IED to the next terminated at each end of each RS 485 network double checking 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 Power Management Control System Chapter 2 Network Design point and no two IEDs grounds connected
130. work 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 17 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 Follow the proper installation procedures Ensure that 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 of how to design a network based on PMCS In each case a fictitious company called GHO Corp is installing a power management system based on PMCS In Case One GHO Corp has only a few 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 in Case One by adding some commnet IEDs to the network In Case Three GHO Corp 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
131. x A IED Descriptions Switchboard Draw out Cases e Fits into existing GE SI switchboard cases or ABB FT21 Instantaneous Measurements e Voltage H In per phase and average Current per phase and average e Real Power per phase and total e Reactive Power per phase and total Apparent Power per phase and total e Power Factor lead lag per phase and total e Voltage Unbalance e Current Unbalance Frequency Energy 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 In per phase e Current per phase e kW KVAR kVA Power Factor Frequency Sliding Window Demand for kW and kVA Electronic Power Meter EPM 3710 The Electronic Power Meter EPM 3710 is a 16bit microprocessor based digital instrumentation package for three phase industrial commercial and utility power systems The EPM 3710 offers a large array of measurements waveform capture for harmonic analysis and setpoint controlled relays including the following features 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 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 Tren
132. y voltage level Protection and Control e Three phase time overcurrent e Ground time overcurrent Five curve shapes e Four curve shift multipliers per curve e 10 time multipliers per curve e ANSI IAC or IEC BS142 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 System Appendix A IED Descriptions Trip record of last five trips e Pre trip data includes currents 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 e Baud rate up to 19 200 e Software for setup and simulation Features e l amp or 5 amp CT input e 20 260 V ac dc control power e Drawout case e Switchgear door or 19 inch rack mount MX200 Microprocessor Controller GE Zenith Controls MX200 advanced microprocessor 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 all of the most commonly used options for today s transfer switch operation It also may be equipped with our ZNET200 remote communication interface for use with annunciators modems Or PC control The
133. ys for ease of troubleshooting e Passcode protected to limit user access e Timer countdown display for ease of operation e User settings unaffected by power outages e Wide range of accessories and configurations available for the most demanding applications Design and Construction Features e Close differential three phase under voltage sensing of the normal source factory standard setting 90 pickup 80 dropout adjustable under frequency sensing of the normal source factory setting 95 pickup adjustable e Voltage and frequency sensing of the emergency source factory standard setting 90 pickup voltage 95 pickup frequency adjustable e Test switch fast test load no load to simulate normal source failure automatically bypassed should the emergency source fail e Type l enclosure is standard also available in open style or Types 3R 4 or 12 e Double throw contactor mechanism e Electrically operated mechanically held e Designed for and standby applications mechanically interlocked emergency Generator PLC Series 90 70 The Generator PLC is configured in such a way that Master PLC has all the information of all the 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 52 Electronic Power Meter EPM 7330 The EPM 7330 gives you all the high accuracy measureme
134. ystem to substation installation in Chapter 3 system depending on the variety of 5 All Modbus IEDs attached to a single RS 485 IEDs used and the number of PMCS network must communicate at the same baud rate data tags required by the IEDs See See Table 1 for Modbus IEDs communication GEH 6509 PMCS DDE Interface Guide speeds pee for details D RS 485 cable shields must be properly grounded 5 Ethernet networks should conform to the design guidelines described in Section 2 3 For maximum protection against surge and EMI damage each IED on the network should 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 an Ethernet network to be used with PMCS Note These specifications are guidelines only and should not be used for actual network design Consult with a qualified LAN engineer for 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 10Base 5 thi

GEH-6502-615 - GE Digital Energy

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