026-1726 Rev 0 22-MAR-2011Energy MeterInstallation andOperation Manual

Retail Solutions3240 Town Point Drive NW Suite 100Kennesaw, GA 30144Phone: 770-425-2724Fax: 770-425-9319ALL RIGHTS RESERVED.The information contained in this manual has been carefully checked and is believed to be accurate. However, Computer Process Controls, Inc. assumes no responsibility for any inaccuracies that may be contained herein. In no event willComputer Process Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential damages resultingfrom any defect or omission in this manual, even if advised of the possibility of such damages. In the interest of continuedproduct development, Computer Process Controls, Inc. reserves the right to make improvements to this manual, and theproducts described herein, at any time without notice or obligation.


1IntroductionThe Energy Meter (P/N 250-5000) provides a solution for measuring energy data with a single device.Inputs include Control Power, CT, and 3-phase voltage. The Energy Meter supports multiple output options, including solid state relay contacts, Modbus,and pulse. The LCD screen on the faceplate allows instant output viewing.The meter is housed in a plastic enclosure suitablefor installation on T35 DIN rail according toEN50022. The Energy Meter can be mounted withany orientation over the entire ambient temperaturerange, either on a DIN rail or in a panel. The meter isnot sensitive to CT orientation to reduce installationerrors.For use in a Pollution Degree 2 or better environment only. A Pollution Degree 2 environment mustcontrol conductive pollution and the possibility ofcondensation or high humidity. Consider the enclosure, the correct use of ventilation, thermal propertiesof the equipment, and the relationship with the environment. Installation category: CAT II or CAT III.WARNING! HAZARD OF ELECTRICSHOCK, EXPLOSION, OR ARC FLASH Follow safe electrical work practices. See NFPA70E in the USA, or applicable local codes. This equipment must only be installed and serviced by qualified electrical personnel. Read, understand and follow the instructionsbefore installing this product. Turn off all power supplying equipment beforeworking on or inside the equipment. Any covers that may be displaced during theinstallation must be reinstalled before powering theunit. Use a properly rated voltage sensing device toconfirm power is off.DO NOT DEPEND ON THIS PRODUCT FORVOLTAGE INDICATIONFailure to follow these instructions will result indeath or serious injury.Provide a disconnect device to disconnect the Energy Meter from the supply source. Place this devicein close proximity to the equipment and within easyreach of the operator, and mark it as the disconnectingdevice. The disconnecting device shall meet the relevant requirements of IEC 60947-1 and IEC 60947-3and shall be suitable for the application. In the US andCanada, disconnecting fuse holders can be used. Provide overcurrent protection and disconnecting devicefor supply conductors with approved current limitingdevices suitable for protecting the wiring. If theequipment is used in a manner not specified by themanufacturer, the protection provided by the devicemay be impaired.Introduction 1

1.1.SpecificationsMeasurement Accuracy:Real Energy Pulse N.O., static outputContacts (all models) ANDReactive EnergyPulse Contacts(30VAC/DC, 100mA max. @ 25 C,derate 0.56mA per C above 25 C)RS-485 Port2-wire, 1200 to 38400 baud, Modbus RTUReal Power andEnergyIEC 62053-22 Class 0.5S, ANSI C12.200.5%Reactive Powerand EnergyIEC 62053-23 Class 2, 2%Current0.4% ( 0.015% per C deviation from25 C) from 5% to 100% of range;0.8% ( 0.015% per C deviation from25 C) from 1% to 5% of rangeWeight0.62 lb (0.28 kg)IP Degree of Protection (IEC60529)IP40 front display; IP20 MeterVoltage0.4% ( 0.015% per C deviation from25 C) from 90V L-L to 600VAC L-LDisplay Character- Back-lit blue LCDisticsSample Rate2520 samples per secondData Update Rate1 secTerminal BlockScrew Torque0.37 ft-lb (0.5 N.m) nominal/0.44 ft-lb (0.6N.m) max.Type of MeasurementTrue RMS up to the 21st harmonic 60 HzOne to three phase AC systemTerminal BlockWire Size26 to 14 AWG (0.13 to 2.08 mm2)RailT35 (35mm) DIN Rail per EN50022Mechanical Characteristics:Input Voltage Characteristics:Environmental Conditions:Measured AC Volt- Minimum 90VL-N (156VL-L ) for statedageaccuracy;UL Maximums: 600VL-L (347VL-N)CE Maximums: 300VL-N (520VL-L)Operating Temper- -30 C to 70 C (86 F to 158 F)atureStorage Temperature-40 C to 85 C (-40 F to 185 F)Metering OverRange 20%Humidity Range 95% RH (non-condensing)Impedance2.5 MΩ L-N /5 MΩ L-LAltitude of Opera- 3 km max.tionFrequency Range45 to 65 HzMetering Category:Input Current Characteristics:CT ScalingPrimary: Adjustable from 5A to 32,000AMeasurement Input 0 to 0.333VAC or 0 to 1.0VAC ( 20% overRangerange)Impedance10.6kΩ (1/3 V mode) or 32.1kΩ (1 V mode)Control Power:AC5VA max.; 90V min.UL Maximums: 600VL-L (347VL-N)CE Maximums: 300VL-N (520VL-L)DC*3W max.; UL and CE: 125 to 300VDCUS and CanadaCAT III; for distribution systems up to347 V L-N /600VAC L-LCECAT III; for distribution systems up to300 V L-N /480VAC L-LDielectric WithstandPer UL 508, EN61010Conducted andFCC part 15 Class B, EN55011/EN61000Radiated Emissions Class B(residential and light industrial)Ride Through Time 100 msec at 120VACConducted andEN61000 Class A (heavy industrial)Radiated ImmunityOutput:Safety:Alarm Contacts (all N.C., static outputmodels)(30VAC/DC, 100mA max. @ 25 C,derate 0.56mA per C above 25 C)US and Canada(cULus)UL508 (open type device)/CSA 22.2 No.14-05Europe (CE)EN61010-1:2001Table 1-1 - Energy Meter SpecificationsTable 1-1 - Energy Meter Specifications2 Energy Meter*External DC current limiting is required, seeSection 4.2.1., Fuse Recommendations.026-1726 Rev 0 22-MAR-2011

1.2.Notice This product is not intended for life or safety applications. Do not install this product in hazardous or classifiedlocations.2Overview2.1.Dimensions The installer is responsible for conformance to allapplicable codes. Mount this product inside a suitable fire and electrical enclosure.1.2.1.FCC Part 15 InformationNOTE: This equipment has been tested by themanufacturer and found to comply with thelimits for a class B digital device, pursuant topart 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in aresidential environment. This equipment generates, uses, and can radiate radio frequency energy and, if notinstalled and used in accordance with the instructionmanual, may cause harmful interference to radio communications. Operation of this equipment in a residential area may cause harmful interference in which casethe user will be required to correct the interference athis own expense. Modifications to this product withoutthe express authorization of Retail Solutions nullify thisstatement.Figure 2-1 - Energy Meter DimensionsFigure 2-2 - Bottom View (DIN Mount Option)NoticeOverview 3

Figure 2-3 - Bottom View (Screw Mount Option)2.2.Product DiagramFigure 2-5 - Four Output OptionsFigure 2-4 - Energy Meter Interface4 Energy Meter026-1726 Rev 0 22-MAR-2011

3InstallationWARNING! Disconnect power prior to installation.Any covers that may be displaced during theinstallation must be reinstalled before powering theunit.3.1.2.Screw Mounting1. Attach the mounting clips to the underside of theEnergy Meter by sliding them into the slots from theoutside. The screw hole must be exposed on the outside of the housing.2. Use three #8 screws (not supplied) to mount the Energy Meter to the inside of the enclosure. See diagram of the underside of the Energy Meter (below).Mount the Energy Meter in an appropriate electrical enclosure near equipment to be monitored.Exposure to VFD harmonics may cause permanentdamage to this device.3.1.Types of MountingThe Energy Meter can be mounted in two ways: onstandard 35 mm DIN rail or screw-mounted to the interior surface of the enclosure.3.1.1.DIN Rail Mounting1. Attach mounting clips to the underside of the Energy Meter by sliding them into the slots from the inside. The outside edge of the clip must be flush withthe outside edge of the Energy Meter.Figure 3-2 - Screw Mounting2. Snap the clips onto the DIN rail. See diagram of theunderside of the Energy Meter (below).Figure 3-1 - DIN Rail Mounting3. To prevent horizontal shifting across the DIN rail,use two AV02 end stop clips.Types of MountingInstallation 5

3.2.Supported System TypesThe Energy Meter Series has a number of different possible system wiring configurations (see Section 4,Wiring). To configure the meter, set the System Type via the User Interface or Modbus register 130 (if soequipped). The System Type tells the meter which of its current and voltage inputs are valid, which are to beignored, and if neutral is connected. Setting the correct System Type prevents unwanted energy accumulationon unused inputs, selects the formula to calculate the Theoretical Maximum System Power, and determineswhich phase loss algorithm is to be used. The phase loss algorithm is configured as a percent of the Line-to-LineSystem Voltage (except when in System Type 10) and also calculates the expected Line to Neutral voltages forsystem types that have Neutral (12 & 40).Values that are not valid in a particular System Type will display as “----” on the User Interface or as QNANin the Modbus registers.CTsNumberof wiresQty IDVoltage ConnectionsPhase LossMeasurementsSystem TypeQtyIDTypeModbusRegister130User Inter- VLLface:SETUP SSYSVLNA2A,NL-N101L 1nANBalanceWiringDiagramDiagramnumberSingle-Phase Wiring2121A2A,BL-L112LAB32A,B3A,B,NL-L with N122L 1nAB12AN,BNAN-BN3Three-Phase Wiring33A,B,C3A,B,CDelta313LAB, BC,CAAB-BC-CA 443A,B,C4A,B,C,NGroundedWye403L 1nAB, BC, AN, BN, AN-BN-CN 5, 6CACN&AB-BC-CATable 3-1 - System Types6 Energy Meter026-1726 Rev 0 22-MAR-2011

4Wiring4.1.Wiring DiagramsTo avoid distortion, use parallel wires for controlpower and voltage inputs.The following symbols are used in the wiring diagrams on the following pages.SymbolDescriptionVoltage Disconnect SwitchFuse (installer is responsible forensuring compliance withlocal requirements. No fuses areincluded with the Energy Meter.)Earth groundFigure 4-1 - 1-Phase Line-to-Neutral 2- Wire System 1 CTCurrent TransducerPotential TransformerProtection containing a voltage disconnect switch with a fuse or disconnect circuit breaker. Theprotection device must be rated forthe available short-circuit current atthe connection point.Table 4-1 -Diagram SymbolsWARNING! This product is designed only foruse with 1V or 0.33V current transformers(CTs).Figure 4-2 - 1-Phase Line-to-Line 2-Wire System 1 CTDO NOT USE CURRENT OUTPUT (e.g. 5A) CTsON THIS PRODUCT.Failure to follow these instructions can result inoverheating and permanent equipment damage.Wiring DiagramsWiring 7

Figure 4-3 - 1-Phase Direct Voltage Connection 2 CTFigure 4-5 - 3-Phase 4-Wire Wye Direct Voltage InputConnection 3 CTFigure 4-4 - 3-Phase 3-Wire 3 CT no PTFigure 4-6 - 3-Phase 4-Wire Wye Connection 3 CT 3 PTWARNING! CTs are referenced to the meter’sneutral (N).8 Energy Meter026-1726 Rev 0 22-MAR-2011

4.2.Control PowerFigure 4-10 - Control Power Transformer (CPT) Connection4.2.1.Figure 4-7 - Direct Connect Control Power (Phase to Phase)Fuse RecommendationsKeep the fuses close to the power source (obey local and national code requirements).For selecting fuses and circuit breakers, use thefollowing criteria: Current interrupt capacity should be selected basedon the installation category and fault current capability. Over-current protection should be selected with atime delay. The voltage rating should be sufficient for the inputvoltage applied.Figure 4-8 - Direct Connect Control Power (Phase to Neutral) Provide overcurrent protection and disconnectingdevices appropriate for the wiring. The earth connection is required for electromagneticcompatibility (EMC) and is not a protective earthground.Figure 4-9 - Control Power Transformer (CPT) ConnectionControl PowerWiring 9

4.3.Wiring Connection to E25Display Screen Diagram5.1.LCD ScreenE2 Power InterfaceBoard (PIB)RS485 MODBUSCONNECTORSWHITE 485SHIELD 0VBLACK -485ECT MODBUSCONNECTOR on theEnergy MeterKACBLSHIELDWHITE 485 0V -485Figure 5-1 - Energy Meter Screen - SREVERSE POLARITYEnergy Meter Data to the E2 RS485 Energy Meter -Data to the E2 RS485 5.2.ButtonsFigure 4-11 - E2 MODBUS connectionConnect the network cable to the three-terminalconnector on the COM port that has been configuredfor the Energy Meter. The Energy Meter polaritymarkings are the inverse of E2; connect the EnergyMeter Data wire to the E2 RS485 - terminal and connect the Energy Meter -Data wire to the E2 RS485 terminal. The shield cable should be connected to theright most terminal.When the E2 is at one end of the daisy chain, terminate the E2 with all three jumpers in the terminated(UP) position.Figure 5-2 - Energy Meter Buttons10 Energy Meter026-1726 Rev 0 22-MAR-2011

6Network Setup andCommissioningE2 PIB COM PORT ASSOCIATIONSCOM3Plug-InModemCardSet Up Network PortsBefore communicating to an Energy Meter, theport on the E2 that has the cable connected to the Energy Meter must be configured to use the Energy Meter.1. Log in to the E2 with Level 4 access.E2 Enclosure (Right Side)E2 Modem/ExpansionCOM Card MountedAbove PIBRS2326.1.2. Press followed by - GeneralController Info.COM63. Press to open the Serial tab of the GeneralController Info setup screens:COM1RS485RS485 COM Card(2 Connectors)Serial DeviceRS232 PortPOWER INTERFACE BOARD(PIB)COM4Serial DeviceRS485 COM Port(2 Connectors)COM2Figure 6-1 - Location of E2 COM PortsConnecting an Energy Meter to an E2 requires theE2 to be version 3.0 or above. Contact Retail Solutions for upgrade information if the controller is a version before 3.0.An E2 has up to three COM ports that can be assigned for MODBUS communication: COM2, anRS485 port on the E2 power interface board, andCOM4 and COM6, which are optional ports requiringexpansion cards.COM ports can only be used for one function; inother words, if COM2 is set up as the I/O network,you cannot connect MODBUS devices to COM2. Ensure your E2 is equipped with an RS485 COM Card(P/N 637-4890) and configured in E2 General Services ( , Serial tab) to enable COM4 or anE2 Expansion COM Card (P/N 637-4871) to enableCOM6.Connect the MODBUS network cable to the threeterminal connector on the COM port you wish to assign as MODBUS. Reverse polarity of /- on RS485cable from E2 to device.Figure 6-2 - Serial Communications Manager Screen4. This screen will have a “Connection” field for allCOM ports on the E2. Highlight the COM port connection field that will be used for MODBUS, andpress - LOOK UP. From the list of networktypes, select MODBUS (1-3).5. Four fields will become visible underneath theCOM port connection field, which pertain to theway the device communicates:6. Baud - Default setting is 19.2k. The baud rate setting should be set to match the baud rate dip switchsettings of all Energy Meter devices. (All devicesconnected to the same COM port should be set tothe same baud rate.) Data Size - Leave this field at the default value (8). Parity - Leave this field at the default value (None).The parity settings should be set to match the paritydip switch settings of all Energy Meter devices. Refer to Table 2. Stop Bits - Leave this field at the default value (1).7. Press to save changes and exit.Set Up Network PortsNetwork Setup and Commissioning 11

6.2.Adding an Energy MeterTo enable communications between E2 and theEnergy Meter units, the devices must be added andaddressed in E2.1. Log in to the E2 with Level 4 access.2. Press - Connected I/O Boardsand Controllers.Figure 6-4 - Network Summary Screen6. By default, each Energy Meter’s board number inthe network list is indicated by a - (dash). To setthe address and begin communication, press to Commission. (If you have more than one MODBUS network, specify which network you want thedevice to belong to.) A screen will open that will allow you set the address:Figure 6-3 - Connected I/O Screen3. In the Connected I/O screen, under the ECT tab,Enter the number of devices in the Energy Meternumber field.4. Press to return to the Network Setup menu,then select - Network Summary.5. Locate the Energy Meter units you added to the network list (press and to scroll through thelist). The default name for an Energy Meter increments up starting with Energy001. The two andthree-letter designator does not apply here.Figure 6-5 - Set the Address of the Energy Meter7. In the list of MODBUS devices, choose the addressnumber corresponding to the Energy Meter’s dipswitch/jumper setting, and press to select it.If a network ID has already been selected, its namewill be shown next to the network ID in this list. Ifthe network ID you are trying to assign has alreadybeen used, you must set the network ID dip switch/jumper on this device to a different number that is12 Energy Meter026-1726 Rev 0 22-MAR-2011

controller that has the latest version of firmware.not being used.Figure 6-6 - List of MODBUS Devices8. Repeat Steps 5 and 6 until each Energy Meter device has been commissioned.9. When finished, press to return to the NetworkSetup menu, then press - Network Summary(Figure 6-4). Locate the Energy Meters you set up,and look at each device’s status in the Status field.You will see one of the following messages: Online - The Energy Meter is communicating normally. Offline - The Energy Meter is not communicating,has not been commissioned, is not functional, or isnot powered up. Verify the Energy Meter is poweredup, wired correctly, and has the proper network address, baud rate, and parity.Figure 6-7 - Network Summary Screen6.3.RS-485 Communications6.3.1.Daisy-chaining Devices to the Energy MeterThe RS-485 slave port allows the Energy Meter tobe connected in a daisy chain with up to 63 two-wiredevices. In this manual, communications link refers toa chain of devices that are connected by a communications cable.MODBUSdevice Unknown - The Energy Meter is not communicatingor has not been commissioned. Verify the EnergyMeter is powered up, wired correctly, and has theproper network address, baud rate, and parity. No Port - No port is set up in the E2 Serial Configuration Manager to be a MODBUS port. Wrong FW Rev - This message is likely caused bythe Energy Meter having a firmware version olderthan the minimum revision required by E2 for communication. Replace the Energy Meter with a newMODBUSdevice#1MODBUSdevice#3E2REVERSE POLARITYEnergy Meter Data to the E2 RS485 Energy Meter -Data to the E2 RS485 Figure 6-8 - Energy Meter Daisy ChainNOTES: The Energy Meter polarity markings are the inverseof E2; connect the Energy Meter Data wire to theE2 RS485 - terminal and connect the Energy Meter-Data wire to the E2 RS485 terminal. The shieldcable should be connected to the right most terminal. The terminal’s voltage and current ratings are compliant with the requirements of the EIA RS-485communications standard. The RS-485 transceivers are ¼ unit load or less. RS-485 has a 47 kOhm pull up to 5V, and RS485- has a 47 kOhm pull down to Shield (RS-485RS-485 CommunicationsNetwork Setup and Commissioning 13

signal ground). Wire the RS-485 bus as a daisy chain from device todevice, without any stubs. Use a 150 ohm termination resistor at the end of the bus between the EnergyMeter’s and - terminals (not included, or use Retail Solutions MODBUS termination blockP/N 535-2711). Shield is not internally connected to Earth Ground. Connect Shield to Earth Ground somewhere on theRS-485 bus. When tightening terminals, ensure that the correcttorque is applied: 0.37-0.44 ft·lb (0.5-0.6 N·m).Figure 6-9 - Energy Meter Wiring14 Energy Meter026-1726 Rev 0 22-MAR-2011

7Quick Setup InstructionsTransformer step down ratio.1. Press the or - button repeatedly until SETUPscreen the PASWD screen.through the digits. Use the or - buttonsto select the password (the default is 00000). Exitthe screen to the right.4. Use the or - buttons to select the parameter toconfigure ( - works best).5. If the unit has an RS-485 interface, the first Setupscreen is S COM (set communications) the ADDR screen and through the addressdigits. Use the or - buttons to select theModbus the BAUD screen. Use the or tons to select the baud rate.but-to the PAR screen. Use the or tons to select the the S V (Set System Voltage) screen.9. -These instructions assume the meter is set to factory defaults. If it has been previously configured, alloptional values should be checked.2.back to the S PT the VLL (or VLN if system is 1L-1n)screen and through the digits. Use the or buttons to select the Line to Line System Voltage.b.10. Use theSETUP.back to the S V exit the setup screen and then11. Check that the wrench is not displayed on the LCD.a. If the wrench is displayed, use the or tons to find the ALERT screen.b.but-through the screens to see which alert is on.For full setup instructions, see the configurationinstructions in Section 10, User Interface for DataConfiguration, Section 11, Alert/Reset Information,and Section 12, User Interface for Setup.back to the S COM screen.6. - to the S CT (Set Current Transducer) screen. Ifthis unit does not have an RS-485 port, this will bethe first the CT V screen. Use the or - buttons to select the voltage mode Current Transducer output the CT SZ screen and through the digits.Use the or – buttons to select the CT size inamps.back to the S CT screen.c.7. -to the S SYS (Set System) the SYSTM screen. Use the or buttons to select the System Type (see wiring diagrams).b.back to the S SYS screen.8. (Optional) - to the S PT (Set Potential Transformer) screen. If PTs are not used, then skip this the RATIO screen and through the digits.Use the or – buttons to select the PotentialRS-485 CommunicationsQuick Setup Instructions 15

8Solid-State Pulse OutputThe Energy Meter has one normally open (NO)KZ Form A output and one normally closed (NC) KYsolid-state output. One is dedicated to energy (Wh),and the other to Alarm. The Energy Meter also provides an additional NO reactive energy (VARh) contact. See the Setup section for configurationinformation.“ConF” in the ALARM - PULSE screen, and enableEnergy pulse output configuration error bit in theModbus Diagnostic Alert Bitmap (if equipped).Figure 8-2 - Setting Pulse Energy8.2.Set Pulse Energy — Wh/PIn Watt Hour (and VAR Hours, if present) perpulse. When moving down to a smaller energy, themeter will not allow the selection if it cannot find apulse duration that will allow the pulse output to keepup with Theoretical Maximum System Power. Whenmoving up to a larger energy, the meter will jump tothe first value where it can find a valid solution.8.3.Figure 8-1 - Solid-State Pulse OutputThe solid state pulse outputs are rated for 24VAC/DC max.Maximum load current is 100mA at 25 C. Derate0.56mA per C above 25 C.* The over-current protective device must be ratedfor the short circuit current at the connection point.** All pulse outputs and communication circuitsare only intended to be connected to nonhazardousvoltage circuits (SELV or Class 2). Do not connect tohazardous voltages.8.1.Set PulseThe System Type, CT size, PT Ratio and SystemVoltage must all be configured before setting thePulse Energy. If any of these parameters are changed,the meter will hunt for a new Pulse Duration, but willnot change the Pulse Energy. If it cannot find a

SHOCK, EXPLOSION, OR ARC FLASH Follow safe electrical work practices. See NFPA 70E in the USA, or applicable local codes. This equipment must only be installed and ser-viced by qualified electrical personnel. Read, understand and follow the instructions before installing this product. Turn off all power supplying equipment before