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GE Multilin

Sub Meters

6. COMMUNICATION INSTALLATION

6.1. RS-485

Each EPM 2000 series instruments has a unique address up to three digits long. The range of

the instrument address is 1 to 247. This allows the user to communicate with up to 247

instruments on one COM port of the PC. However, each RS485 segment allows only 32

loads(nodes). Therefore, Data Repeaters are necessary to amplify the signal between

segments.

Available standard baud rates are 1200, 2400, 4800, 9600 and 19200. To select the proper

baud rate, apply the following rules:

•

For best results under normal conditions, leave the meter factory-set at 9600 baud.

•

For a smaller number of instruments over a long distance, use a low baud rate 4800 / 2400

/ 1200.

•

In noisy EMI, RFI conditions, try 4800 or 2400 baud.

•

With short cable runs (< 300 meters or 975 feet), 19200 baud speeds up data transfers.

The connection diagrams show one Termination Resistor (RT) across the cable-pair at each

end of the cable. This is a 1 Watt resistor, 5% or better. Its value should approximately equal

the Impedance of the Data Cable, as specified by the cable manufacturer. If you’re not sure, a

value of 120 Ohms might just work fine.

The termination resistors help absorb the data signal reflections off the ends of the cable,

reducing data packet defects and the corresponding data packet re-transmissions. In cable runs

longer than say 200 meters (650 feet), and with baud rates higher than 9600 baud, these

benefits become more apparent.

Figure 6-1: 2 Wire Half Duplex Communication Connection

EPM 2000 Instruments (rear view)

Содержание Multilin EPM 2000 Series

Страница 1: ...N MANUAL Manual P N 1601 0156 A2 Manual Order Code GEK 106556A Copyright 2005 GE Multilin GE Multilin 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 Internet http www GEmultilin com g GE Industrial Systems ...

Страница 2: ...r monitoring OUR PRODUCTS ARE NOT TO BE USED FOR PRIMARY OVER CURRENT PROTECTION ANY PROTECTION FEATURE IN OUR PRODUCTS IS TO BE USED FOR ALARM OR SECONDARY PROTECTION ONLY THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANABILITY OR FITNESS FOR A PARTICULAR PURPOSE ENERCON SHALL NOT BE LIABLE FOR ANY PENAL INDIRECT SPECIAL OR CONSEQUENT...

Страница 3: ...he Energy Integrator 26 2 2 2 1 Integrator Overflow 26 2 3 Summary 27 3 AC POWER MEASUREMENT 28 3 1 Three Phase Systems 28 3 2 Consumption Poor PF 29 3 3 3D kVA Measurement 29 4 MECHANICAL INSTALLATION 30 4 1 Installation Process 33 4 1 1 Panel Mounting for New Installations 33 4 1 2 Location 33 4 1 2 1 Usage 33 4 1 2 2 Panel Considerations and Environment 33 4 1 2 3 Viewing 34 4 1 3 Mounting 34 5...

Страница 4: ...UNICATION INSTALLATION 43 6 1 RS 485 43 6 2 Repeaters 45 6 3 Factory Settings 46 6 4 Modbus Registers 46 6 5 Register Map 47 6 5 1 RMS Total Average Block 47 6 5 2 RMS Phase A Block 47 6 5 3 RMS Phase B Block 48 6 5 4 48 6 5 5 RMS Phase C Block 48 6 5 6 Forward Integrator Block 49 6 5 7 50 6 5 8 Favorite Block 50 6 5 9 51 6 5 10 Display Only Parameters 52 ...

Страница 5: ...rating instructions The remaining Chapters explain the Installation and Setup steps before the Meter is ready for use The EPM 2000 is a universal meter Before use please program the SYS measurement system configuration PT and CT ratios through the front panel keys Otherwise it will read your system incorrectly GE stands behind your EPM 2000 products with complete User Support and Service If the ne...

Страница 6: ...ngs update every second For each row Kilo Mega Kilo Mega Giga indicator and a Negative indicator Load bar graph gives the indication of consumption in terms of the Aavg of load Five keys to scroll through the display pages The EPM 2000 products solves the problem of cluttered indicators by prominently displaying the parameter name right on the large numeric readouts For the first time in a Panel M...

Страница 7: ...Kilo When lit indicates that the reading is in Kilo 10 3 10 000 is shown as 10 00K 1 0K is shown as 1000 Table 1 3 Giga Mega M Kilo K Decimal Point Scaling RMS Reading Indicator Less than 0 001 K M Off displays 0 000 Less then 9999 K M indicators Off Above 9999 K ON Above 9999 k M ON Above 9999 M Giga K M indicators ON Upto 9999G Giga Above 9999G Display shows Hi for ve numbers and Lo for ve numbe...

Страница 8: ...unctions Continuous pressing for 3 seconds initiates the Full Auto scroll mode thru all functions Press any key to return to Manual scrolling Decreases the value of the blinking digit during Edit TURBO Key The TURBO key scrolls thru the following pages RMS Home page VLL A PF VLN A F VA W VAR W VAR PF PF1 PF2 PF3 VAh and Wh This gives simple one touch access to the most commonly used parameters eve...

Страница 9: ... Sub Meters Table 1 6 Menu and Display Map Press the key that takes you in the desired direction You can t cross the thick boundary Run Prog RMS V A PF V1 V2 V3 A1 A2 A3 Integ VAh Wh Clr Set V pri A pri Main Menu ...

Страница 10: ...ility The standard unit flush mounts in a DIN 96 cutout Conforms to UL and CE safety requirements The EPM 2000 is designed for retrofit application such as replacement of existing analog meters and is also usable as a stand alone meter in custom panels PDUs switchboards switchgear UPS s generator sets MCCs systems etc The EPM 2000 provides easy communication to PLCs DCS BMS and other systems throu...

Страница 11: ...rgy Reactive Power and Energy Apparent Power and Energy Power Factor Frequency The EPM 2000 provides all single phase per phase Real Apparent Reactive Power and Power Factor values Positive Inductive and Negative Capacitive Reactive Energy is separately accumulated for Lead Lag analysis 1 3 3 Accuracy Measurement Class 1 0 of reading Voltage LN per phase 0 5 Voltage LL per phase 0 5 Voltage LN avg...

Страница 12: ...cutout flush mount The Protection cover affixed over the rear Terminal Block extends the depth to 82 mm Bezel dimension 96 x 96 mm Panel Cutout 91 x 91 mm Weight 400 grams approx Unpacked 500 grams approx Shipping 1 3 7 Environmental Conditions Sealed dust proof construction Meets IP51 for the front panel Temperature Operating 10 to 60 C 14o F to 140o F Storage 25 to 70 C 13o F to 158o F Humidity ...

Страница 13: ...E Multilin Sub Meters 14 1 3 9 Safety Construction Self extinguishable V0 plastic double insulation at accessible area Pollution Degree II Measurements Category III See Chapter 4 Mechanical Installation ...

Страница 14: ......

Страница 15: ...s consumption in terms of Aavg Now user can quickly estimate the load by viewing the display without operating any keys The bar graphs consists of 12 segments Each segments indicates 10 of average load Kilo Mega Giga indication for the above parameters 2 1 Keypad Operation The Table below is quite simple to use Look at the shaded left half under the parameter Name Follow these simple steps First t...

Страница 16: ...e or keys Use key only Run V Ln A F PROG RMS VA W VAR W VAR PF VAh Wh VARh VARh run h V LL A PF A 1 2 3 V 12 23 31 V 1 2 3 A 1 2 3 W 1 2 3 VAR 1 2 3 PF 1 2 3 VA 1 2 3 Intg On h Intr diAG 2000 03 01 01 00 1 00 9600 Evn 1 RS 485 status Factory QA only ...

Страница 17: ... amperes phase 1 Watt Total 2 Volt amperes phase 2 VAr Total 3 Volt amperes phase 3 W 1 2 3 W VAr PF Watt Total W 1 Watts phase 1 VAr Total Note Watts reverse current 2 Watts phase 2 Power factor Average 3 Watts phase 3 VA W PF PF 1 2 3 PF 1 2 3 Power factor phase 1 Power factor phase 2 Note Indicates Lead Capacitive Power factor Power factor phase 3 VAr 1 2 3 Var 1 2 3 VAr phase 1 VAr phase 2 Not...

Страница 18: ...ntegrated values or Set meter settings you must first enter the Main Menu Go Left to the RUN page from PROG You must now enter the Factory Set code of 1000 to proceed o Code y followed by the entry of the Code 1000 is required o To enter the code edit the blinking digit value Up or Down to get 1000 o Keep going Left o Without entering the code you may view the settings but you can t change them 2 ...

Страница 19: ...s gives simple one touch access to the most commonly used parameters even for unskilled operators One touch does not operate in the Setup Program Mode Optional parameters are in blue color If you re lost the TURBO key is a quick way to get back to the RMS home page Continuous pressing for 3 seconds initiates Auto scrolling through the above Fav pages ...

Страница 20: ...shed then run is displayed To proceed with Code Entry 000 0 The blinking digit indicates the cursor The code is Factory Set to 1000 Press to enter each digit Three times totally 2 000 We have now entered the Units Tens and Hundreds digits The Thousands digit needs to be changed from 2 to 1 Press to decrement 2 1 000 Now the Code of 1000 is almost in Press to enter the Main Menu 0000 Pass run Or Fa...

Страница 21: ...e desired Setup values Step 4 the sequence to get back to the RMS page is 5 6 7 8 Exiting Setup requires you to Save the settings Step 6 SAVE Y press To Discard the changes toggle Up or Down to get SAVE N before pressing Going forward from 7 RUN to 8 PROG does not require any Code You go straight through Entering into the setup on power up 1 1 1 During power on press the Turbo key continuously for...

Страница 22: ... Figure 2 2b Code entry for Entering Setup Code Entry Legend Use orkeys Use orkeys Use key only Run Code n Fail view only Code y Fail View only Pass 10 0 0 20 0 0 Prog RMS To program via code entry Set Clr EPM 2000 v03 01 01 00 ...

Страница 23: ... A PRI A SEC 415 0 100 0 5 000 A PRI A SEC LABL 100 0 5 000 123 A Sec LABL VA Fn 5 000 123 3d LABL VA Fn baud 123 3d 9600 Baud Prty Id 9600 Evn 1 1 000 Prty Id Evn 1 1 000 Id 1 000 Edit Blinking Digit Mew value Steady display Setup starts with SYS VA Fn baud Prty 3d 9600 Evn 1 Name Run Code n Fail view only Code y Fail View only Pass 10 0 0 2 0 0 0 Intg Intg y PASS Intg n CLR FAIL Program EPM 2000...

Страница 24: ...g Press to view Value StAR 415 0 415 0 Wiring System Star 3E Voltage primary 415v Voltage secondary 415v Press to edit SYS value The value blinks Star 415 0 415 0 Blinks Only Top Row is edited Ignore Ignore Press to change to Delta 2E Delta 415 0 415 0 Blinks Note To discard the change Press Restores the previous value Press to accept the value Delta 415 0 415 0 Steady SYS is now set to Delta Pres...

Страница 25: ...with CLR Intg y Clear Integ Yes NOTE escapes back to Main Menu Press to Clear Pass intg Integ Cleared To head back press Clr Now you re back in the Main Menu and can go to RUN and to RMS Figure 2 2d Clearing the Integrator Clearing the Integrator EPM2000 v03 01 01 00 Run Code n Fail view only Code y Fail View only Pass 10 0 0 2 0 0 0 Intg Intg y PASS Intg n Clr FAIL To program via code entry Prog ...

Страница 26: ...irect Reading and have a high resolution This is necessary for accurate energy analysis over short intervals of time It also means that the readings max out and reset sooner or later as given below Since the Integrator contains counters for several parameters VAh Wh VARh VARh RunHrs On Hrs Interruptions they all reset together whenever any one of them usually VAh overflows This makes energy manage...

Страница 27: ...GE Multilin Sub Meters 27 2 3 Summary We ve now learned to operate the EPM 2000 products to configure its Setup and to Clear its Integrator ...

Страница 28: ...phase system the voltage levels between the phases and the neutral are ideally defined by V1 V2 V3 V12 3 V23 3 V31 3 In practice there will be some unbalance difference Figure 3 1 Three Phase System 1 Delta 2 Star Wye Voltages between the phases vary depending on loading factors and the quality of distribution transformers Power measurement in a poly phase system is governed by Blondel s Theorem B...

Страница 29: ...mers to correct their Power Factor utilities monitor reactive power consumption and penalize the user for Poor Power Factor 3 3 3D kVA Measurement The EPM 2000 is equipped with 3D Measurement of kVA This advanced method provides the most accurate and predictable measurement under unbalanced as well as distorted waveform conditions However in case the EPM 2000 needs to match the reading of older or...

Страница 30: ...sions adhere to DIN 43700 Depth required behind the Bezel is 80 mm plus space for wiring Two side clamps are provided for firm mounting These diagrams display the various dimensions of mechanical installations SIDE VIEW CAUTION All Installation wiring and maintenance instructions to be carried out by qualified personnel only Please read this and the following chapter completely before proceeding ...

Страница 31: ...GE Multilin Sub Meters 31 FRONT VIEW REAR VIEW ...

Страница 32: ...32 Sub Meters GE Multilin TOP VIEW RECOMMENDED CUTOUT 91 x 91 mm ...

Страница 33: ...should be separated from other equipment and sufficient space must be provided all around for cooling air to rise vertically past the instrument The cooling air temperature must be below the specified operating temperature DANGER All Installation wiring and periodic maintenance of the EPM 2000 as well as its associated circuits involves high voltages and currents While this manual suggests several...

Страница 34: ... from strong light sources 4 1 3 Mounting Before Mounting and Wiring the Setup procedure should have been completed The EPM 2000 is panel mountable Panel cutout 90 1 0 0 mm w x 90 1 0 0 mm h DIN 43700 Panel Thickness 0 5 mm to 4 0 mm Instrumental Bezel dimension 96 mm x 96mm Depth behind Bezel 80 mm Leave clearance for wires 82 mm with Terminal Cover Mounting Clamp Screws Slotted 2 nos Terminal Sc...

Страница 35: ...t DANGER All Installation wiring and periodic maintenance of the EPM 2000 as well as its associated circuits involves high voltages and currents While this manual suggests several safety and reliability steps it must be used in conjunction with the safety codes in force at your location Failure to practice safe working procedures is likely to cause damage to the installation severe injury and or d...

Страница 36: ...ed by a qualified electrical contractor before wiring the meter The accuracy of the measurement is determined by the accuracy and phase shift of the PTs and CTs Instrument Class 1 or better PTs and CTs are recommended Do not use Protection Class 10P10 etc CTs to feed the EPM2000 they have poor accuracy and phase characteristics Ensure that the CT Primary rating has been selected so that your norma...

Страница 37: ...up Field Programming section for programming details IMPORTANT The PT Primary and Secondary values must be User Programmed before using the Meter Otherwise the readings will be wrong 5 3 2 Selecting the Voltage Fuses We strongly recommend using fuses on each of the sense voltages and the control auxiliary power although connection diagrams often do not show them Use a 1 Amp fuse on each voltage in...

Страница 38: ... without re programming the EPM 2000 the EPM 2000 will read erroneous values 5 4 2 CT Polarity When the meter is connected using the CTs you must maintain the correct CT polarities CT polarities are dependent upon correct connections of CT leads and upon the direction the CTs are facing when clamped around conductors The dot on the CT must face the line side the corresponding secondary connection ...

Страница 39: ... For Three Phase Four Wire Three Watt meter or Three Element circuits Here all three voltage Phase signals the Neutral voltage connection and all three current input signals need to be wired in Which means that all the 4 voltage terminals and 6 current terminals described in the following section need to be wired This setting is also used for Single Phase Circuits Here the V1 and VN terminals as w...

Страница 40: ... panel 14 terminals are provided 7 terminals on each side Six terminals for current one in and one out per phase Four terminals for voltage for three phases and neutral Two terminals for meter Auxiliary Power Supply and Two terminals for the RS 485 communications port Figure 5 1 Meter Rear panel ...

Страница 41: ...CTs Direct Voltage Connections if Voltages are less than 600v AC L L Otherwise 3 PTs for Closed Delta or 2 PTs for Open Delta Note Remember to make sure Delta is programmed in the meter Setup Leave the Vn terminal un connected Figure 5 2 The Delta Connection Diagram ...

Страница 42: ...e Connections if Voltages are less than 600v AC L L Otherwise 3 PTs For Single Phase the same diagram is used except that only Phase 1 connections exist and Phase 2 and Phase 3 are unused The unused current terminals must be shorted together to reduce noise picked up in the meter ...

Страница 43: ...stance use a low baud rate 4800 2400 1200 In noisy EMI RFI conditions try 4800 or 2400 baud With short cable runs 300 meters or 975 feet 19200 baud speeds up data transfers The connection diagrams show one Termination Resistor RT across the cable pair at each end of the cable This is a 1 Watt resistor 5 or better Its value should approximately equal the Impedance of the Data Cable as specified by ...

Страница 44: ...44 Sub Meters GE Multilin Figure 6 Closed Loop 2 Wire Half Duplex RS485 Communication Connection ...

Страница 45: ...5 Communication Connection 6 2 Repeaters RS 485 Transceivers Repeaters are required for large networks of instruments In a two wire connection a maximum of 247 instruments on one COM port of the PC can be included in the same network One RS 485 Segment can accommodate only 32 Devices ...

Страница 46: ...ses are in Decimal However check your SCADA Program s Modbus driver specs such as an offset of 40 001 In this case of EPM 2000 Address 3000 must be treated as Modbus Register Address 43 001 The EPM 2000 supports the transfer of whole block and also of individual Data values 2 Registers are used for storing single Data value o In transfer of whole block it basically treats each block as an object w...

Страница 47: ...ESERVED1 Reserved for future use 32 bit Unsigned Long 3018 INTR Number of Power Interruptions 32 bit Unsigned Long 6 5 2 RMS Phase A Block Start Address 3030 Block Size 20 Registers Modbus Read Function Code 03 Always transfer the Whole Block Addr ess Parameters Description Data Type 3030 VAA RMS Phase A Apparent Power 32 bit Float 3032 WA RMS Phase A Active Energy 32 bit Float 3034 VARA RMS Phase...

Страница 48: ...ERVED3 Reserved for future use 32 bit Unsigned Long 3078 INTRB Number of Power Interruptions 32 bit Unsigned Long 6 5 4 6 5 5 RMS Phase C Block Start Address 3090 Block Size 20 Registers Modbus Read Function Code 03 Always transfer the Whole Block Add ress Parameters Description Data Type 3090 VAC RMS Phase C Apparent Power 32 bit Float 3092 WC RMS Phase C Active Energy 32 bit Float 3094 VARC RMS ...

Страница 49: ...e Energy 32 bit Float 3124 VARh_L Fwd Forward Reactive Inductive Energy 32 bit Float 3126 RESERVED5 Reserved for future use 32 bits 3128 RESERVED6 Reserved for future use 32 bits 3130 VARh_C Fwd Forward Reactive Capacitive Energy 32 bit Float 3132 RESERVED7 Reserved for future use 32 bits 3134 RESERVED8 Reserved for future use 32 bits 3136 RESERVED9 Reserved for future use 32 bits 3138 RUN_SECS Fw...

Страница 50: ... A PF 32 bit Float 3924 VAB RMS Phase A Line to Line Voltage 32 bit Float 3926 VA RMS Phase A Line to Neutral Voltage 32 bit Float 3928 AA RMS Phase A Current 32 bit Float 3930 VAB RMS Phase B Apparent Power 32 bit Float 3932 WB RMS Phase B Active Energy 32 bit Float 3934 VARB RMS Phase B Reactive Energy 32 bit Float 3936 PFB RMS Phase B PF 32 bit Float 3938 VBC RMS Phase B Line to Line Voltage 32...

Страница 51: ... occurrence time 32 bit Long 3994 RUN_SECS Fwd Forward Seconds Meter Load was connected since last Reset 32 bit Unsigned Long 3996 RUN_SECS Rev Reverse Seconds 32 bit Unsigned Long 3998 INTR Number of Power Outages 32 bit Unsigned Long 6 5 9 Register Map Notes Favorites These Advisable to configure all the The Power Outages Intr parameter in Total RMS Block RMS Phase A Block RMS Phase B Block and ...

Страница 52: ...eters Available on the Front Panel Display but not available on the RS485 communication port Sl No Parameters available on Front Panel Display only 1 Phase A Current Phase Angle 2 Phase B Current Phase Angle 3 Phase C Current Phase Angle 4 On Hours END OF DOCUMENT ...

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