Class 3400 Meter ADVANCED KWH/DEMAND METER WITH COMMUNICATIONS INSTALLATION INSTRUCTIONS E-Mon 850 Town Center Drive Langhorne, PA 19047 (800) 334-3666 www.emon.com info@emon.
CLASS 3400 METER Dear Valued Customer, We are pleased that you chose to buy one of our products, and want you to be just as pleased with owning it. Before installing your new E-Mon product, please read the information on the following pages carefully. We believe that you will find the E-Mon D-Mon meters easy to install and to use for monitoring and evaluating your electrical usage.
CLASS 3400 METER TABLE OF CONTENTS Section 1.0 Introduction 4 Section 2.0 Internal Electronic Assemblies 5 Section 2.1 Main Power Board 5 Section 2.2 Display Board 6 Section 3.0 Meter Technical Specifications 7 Section 4.0 Safety Label Definitions and Information 10 Section 5.0 Precautionary/Safety Information 11 Section 6.0 Meter Installation 12 Section 6.1 Mounting the Class 3400 Meter 12 Section 6.2 Main Power Board Connections 12 Section 6.
CLASS 3400 METER 1.0 INTRODUCTION The E-Mon D-Mon® Class 3400 meter is a 3-element meter with communications. The device is used to monitor electric power usage of individual loads after the utility meter and store kW and kVAR data for automatic meter reading. The Class 3400 meter is dual protocol capable and provides both RS485 and Ethernet communications.
CLASS 3400 METER 2.0 INTERNAL ELECTRONIC ASSEMBLIES The units are comprised of two major subassembly boards, the main power board and the display board. Both circuit boards are mounted inside a NEMA 4X enclosure. DISPLAY BOARD MAIN POWER BOARD M33315 Fig. 1. Internal Electronic Assemblies. 2.1 Main Power Board Connections to this board include the MAIN Power Input and current sensors.The MAIN Power Input terminals are positions one through four on the four position screw terminal block, TB1.
CLASS 3400 METER 2.1 Main Power Board (continued) There are also two headers present for adding option cards. Header J3 is 20 positions for use with an I/O board with up to two relays, two pulse inputs and two pulse out puts. 2.2 Display Board The display board connects to the main power board via a flex ribbon cable and the board mounts on the inside of the housing door. No additional connections to the display board are required.
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CLASS 3400 METER 3.0 METER TECHNICAL SPECIFICATIONS (CONTINUED) Input Voltage Configuration 3-wire (Delta) Or 4-wire (Wye) Mains Voltage Input Up To 600 VAC RMS Available Input Power 6 VA Maximum Rating Current Sensor Rating Up To 3200 Amps RMS AC Available Power Factor 0.5 Leading Or Lagging Line Frequency 50-60 Hz Metering Accuracy ANSI C12.
CLASS 3400 METER 3.0 METER TECHNICAL SPECIFICATIONS (CONTINUED) RS-485 Serial Communications Ethernet Communications Cable Load Control Contacts: Recommended In-line Fuse Battery Cell Cable: UL-listed stranded conductors, 22-26 AWG. Input/Output Voltage: Ground-isolated +/-5.4VDC Cable Connector: Screw terminal termination Circuit Input Isolation: 5.
CLASS 3400 METER 4.0 SAFETY LABEL DEFINITIONS AND INFORMATION The Class 3400 meter may contain one or more of the following labels. Operator(s) should familiarize themselves with the meaning of each label to minimize risk. The presence of this label is a cautionary indicator identifying a danger risk. The manual should be consulted prior to proceeding. The presence of this label indicates an electrical shock hazard exists in the location or area where the label is placed.
CLASS 3400 METER 5.0 PRECAUTIONARY AND SAFETY INFORMATION CAUTION Internal circuit card components are extremely sensitive to electrostatic discharge. Be careful not to touch internal circuitry prior to discharging any static buildup on your person. To discharge yourself, touch a grounded metal object such as conduit or an earth-grounded metal enclosure. WARNING High voltages present on main PCB terminal block TB1 screw terminals. Risk of serious injury and/or electrical shock exists.
CLASS 3400 METER 6.0 METER INSTALLATION 6.1 Mounting the Class 3400 Meter Use appropriately sized mounting hardware to fasten the meter enclosure to the selected mounting surface. The four housing mounting holes are centered 8.75” H x 4” W for the CL3400. NOTE: Units housed in UL Type 1 enclosures must only be installed in indoor environments, where they will not be affected by the elements. 6.2 Main Power Board Connections 1. Installing a temporary ground for ESD protection: 2.
CLASS 3400 METER 6.2 Main Power Board Connections (continued) Fig. 4. Terminal Block TB1. NOTE: For 3-wire delta-type meters, Do NOT connect the NEUTRAL wire. Remove the terminal block screw for this position. a. Connect the NEUTRAL wire to the appropriate terminal block position. b. Earth Ground: Connect the Earth Ground to the PCB mounting screw in the lower right corner. c.
CLASS 3400 METER 6.2 Main Power Board Connections (continued) f. Verify the voltage readings on Screen 5 using an AC voltmeter. Typical readings shown below are measured phase to neutral for 4 wire and phase to phase for 3 wire. Readings should be +/- 10% of nominal.
CLASS 3400 METER The Class 3400 meter can be used with two types of current sensors: 1. 2. Split-core current sensor. This sensor opens so that it can be attached around the circuit being monitored without interrupting power. Unless otherwise specified, all Class 3400 meters are supplied with this sensor type. Solid-core current sensor. This sensor does not open and requires the monitored conductor to be removed from the circuit to install the current sensor.
CLASS 3400 METER 6.4.2 Current Sensor Wiring Once the current sensors are installed onto their appropriate phase conductors, you can begin terminating the current sensors onto the Class 3400 main board. The current sensors can be extended up to 500 feet for remote monitoring applications. To extend the length of the wires, use #22 AWG twisted-pair wire with one white and one black wire. The easiest way to connect the current sensors is to use the meter’s built-in current sensor diagnostics.
CLASS 3400 METER 6.5 Main Power & Current Sensor Wiring Diagram LINE VOLTAGE N ∅A ∅B ∅C 3-PHASE INSTALLATION DIAGRAM CURRENT SENSORS ∅C ∅A ∅B W B W B W B NOTES: LINE VOLTAGE CONNECTIONS: #14-22 AWG SENSOR CONNECTIONS: W = WHITE LEAD B = BLACK LEAD 1 1 1 ∅A NEUTRAL NOT USED IN DELTA SYSTEM. ∅B LITTLEFUSE PART NUMBER KLDR 100. 1 ∅C 1/10A 600 VAC INLINE FUSE PER CONDUCTOR. LITTLEFUSE PART NUMBER KLDR, 100. LOAD N SOURCE M33194 Fig. 7. Current Sensor Wiring Diagram. 6.
CLASS 3400 METER 6.6.2 Current Sensor Diagnostics The load current must be at least 1% of the meter’s rated load in order to use the diagnostic function. Current sensor diagnostics can detect: 1. 2. 3. Reversed current sensors Incorrect phase correspondence Unusually low power factor (0.642 or lower) CT Error: (ABC) is used to detect the swapping of current sensor phases. This message could (in some rare cases) indicate a low (<65%) power factor condition.
CLASS 3400 METER 6.7 RS-485 Wiring RS-485 communication allows a computer or modem to communicate with one or more Class 3400 meters. You can connect as many as 52 meters along a 4000-foot RS-485 cable run. There are three communication protocols available through the Class 3400 RS-485 connection. They are EZ7, Modbus RTU, BACnet MS/TP, and Lonworks FT-10 (Lonworks FT-10 available only through an optional module). The protocol is chosen when ordering the Class 3400 meter.
CLASS 3400 METER 6.7 RS-485 Wiring (continued) After performing these steps, all of the meters will be connected in a daisy chain configuration. This network of meters can then be connected to the RS-485 network and communication can be established. Internal Modem An optional internal modem inside one meter will communicate with the others via the RS-485 network. Simply connect one of the two telephone jacks on the modem to the telephone line to complete the installation.
CLASS 3400 METER 6.8.1 Hardwired System using the RS-232 Communication Key (continued) UP TO 4000 FEET TOTAL PC CHANNEL 1 ~ ~ UP TO 52 CLASS 3400 METERS RS-232 SERIAL PORT COM1 OR COM2 15 FEET MAX RS-232 KEY* AC ADAPTER CHANNEL 3 CHANNEL 2 UP TO 4000 FEET TOTAL UP TO 52 CLASS 3400 METERS ~ ~ M33318 Fig. 10. RS-232 Configuration. 6.8.2 Connecting the RS-232 Key to the Computer The RS-232 key is supplied with: a. (1) 8-conductor cable fitted with RJ-45 plugs b.
CLASS 3400 METER 6.8.3 Connecting Class 3400 Meters to the RS-232 Key using RS-485 On the rear panel of the RS-232 key, there are three jacks labeled as channels A, B and C. These are RS-485 serial communications ports used to connect the meters. Each of these channels can be connected to as many as 64 individual meters over a total cable distance of 4,000 feet. The channels are independent and must not be connected to each other. *Do not use any pre-made telephone cables. 1.
CLASS 3400 METER 6.9 Modem Wiring RS-232 SERIAL PORT COM1 THROUGH COM3 MAXIMUM 15 FEET CHANNEL 1 LOCAL MODEM ~ ~ PC OR WINDOWS COMPATIBLE TELEPHONE LINK UP TO 4000 FEET TOTAL ~ UP TO 52 ~ CLASS 3400 METERS PER CHANNEL RS-232 KEY RM CHANNEL 2 AC ADAPTER CHANNEL 3 UP TO 4000 FEET TOTAL ~ UP TO 52 ~ CLASS 3400 METERS PER CHANNEL M33319 Fig. 12. Modem Configuration. 6.9.
CLASS 3400 METER 6.9.2 External Modem 1. 2. 3. 4. 5. All meters should be connected to the RS-232 key as described in 6.8.2. DISCONNECT POWER TO THE RS-232 KEY. Remove the cover by removing the 2 screws from the bottom of the enclosure. On the circuit board, locate the blue jumpers J7 (MODEM) and J8 (ex-MODEM). If these jumpers are set in the DIRECT position, you must move the jumpers so they are set in the MODEM position. Replace the cover and secure the enclosure.
CLASS 3400 METER The selections are noted below. 3 4 ON ON OFF ON ON OFF OFF OFF BAUD RATE 9600 19200 38400 M33277 Fig. 13. Baud Rate. 6. Using other than 9600 BAUD will reduce the maximum cable length allowed for communication.
CLASS 3400 METER 6.10 Modbus RTU Wiring The Class 3400 Modbus meter communicates with building automation equipment over a 2-wire (3-conductor) RS-485 network using Modbus RTU protocol. The meters are networked in a daisy-chain configuration (Section 6.7) with BELDEN 1120A cable or equivalent. The cable rating of 600V allows the RS-485 network to be connected to 480-volt meters. Up to 52 meters can be installed on a network string.
CLASS 3400 METER 6.11 BACnet MS/TP Wiring BACnet MS/TP wiring is the same as Modbus and EZ7 wiring. See Sections 10 and 11 for instructions on changing I.D. and IP addresses. 6.12 Connecting Class 3400 Meters to the USB Key using RS485 The USB Key plugs into the PC’s USB port and provides a termination point for the RS485 wiring from the meters. Up to 52 meters can be “Daisy chained” with up to 4000 feet total RS485 wiring.
CLASS 3400 METER 6.13 Ethernet Communications Ethernet/IP communications connections are provided through an RJ-45 connector(J8) in the lower right corner of the main power board. This port can be connected directly to a network port of a PC using a Cat. 5e crossover cable. Two LEDs are provided directly above the connector. The LINK LED is yellow and when lit, indicates ethernet connectivity. The ACT led is green and when lit, indicates communication activity.
CLASS 3400 METER SEE SECTION 10 FOR INSTRUCTIONS ON CHANGING ID AND IP ADDRESSES. EMS OR CONTROL UNIT WITH MODBUS COMMUNICATION M32786 RS-485 DAISY CHAIN (SECTION 5.7) ETHERNET NETWORK M32787 Fig. 16. EMS or Control Unit with Modbus Communication RS-485 Daisy Chain Ethernet Network.
CLASS 3400 METER 7.0 MULTIPLE-LOAD MONITORING The E-Mon D-Mon Class 3400 meter provides extreme flexibility by allowing additional sets of current sensors to be used in parallel so multiple load locations can be monitored by one meter. This feature allows a totalized display readout from two or more load circuits. You may use parallel sensors to monitor specific breakers from one panel, specific breakers from more than one panel, two or more complete panels, etc.
CLASS 3400 METER NOTE: One set of current sensors equates to three sensors, one per phase. The multiplier only applies when extra sets of current sensors are installed on one meter. If you are using only one set of three current sensors, the multiplier is not required. LINE VOLTAGE ØAØB ØC N LOAD LOAD SOURCE LOAD A SOURCE LOAD B CURRENT SENSORS ØA ØB ØC WB WB WB ØA ØB ØC N ØA ØB ØC N M31603 Fig. 17. Multiple-load Wiring Diagram.
CLASS 3400 METER 8.0 PREVENTATIVE/SCHEDULED MAINTENANCE The unit is shipped in a calibrated and fully functional tested condition. Since the unit is factory-calibrated using proprietary firmware algorithms, no internal unit adjustments are necessary. This unit contains no internal adjustments, so no preventative or scheduled maintenance is required. No cleaning or decontamination procedures are required for this instrument. 9.
CLASS 3400 METER + – BATTERY M33278 Fig. 19. Lithium Battery Cell. Use the following procedure to replace the battery cell 1. 2. 3. Disconnect power from the meter at the unit external circuit breaker. Remove the battery from its holder and place on a non-conductive surface. Install new battery into the battery holder. NOTE: Care should be taken to insure that the replacement battery is installed the same polarity as the battery that was removed.
CLASS 3400 METER 10.0 CLASS 3400 METER FEATURES DISPLAY BOARD PUSH BUTTONS DOWN UP SELECT MENU M33320 Fig. 20. Push Buttons.
CLASS 3400 METER 10.0 CLASS 3400 METER FEATURES (CONT) To access any of these items press the MENU button. The list will be displayed and an arrow will appear to the left of LOAD CONTROL. To scroll down the list press the MENU button until the desired item is indicated by the arrow. Then push the SELECT button to enter the configuration screen for that item. The UP and DOWN buttons can then be used to change the configuration field that is flashing.
CLASS 3400 METER 10.0 CLASS 3400 METER FEATURES (CONTINUED) Display Hold Feature You can “lock” the scrolling display so that it will stay locked on any one of the 7 screens. On the inside of the door, locate the 4 buttons at the top of the Display Board: Down, Up, Select and Menu. To stop the display from scrolling, follow these instructions: The Select button is used to lock the meter’s display so that it stops scrolling and the display remains on one screen.
CLASS 3400 METER 11.0 READING THE CLASS 3400 METER DISPLAY The Class 3400 meter features seven different displays showing information in 5 second scrolling intervals.
CLASS 3400 METER 12.0 CLASS 3400 METER EXPANSION BOARD The Class 3400 Meter Expansion Board option adds a number of new features to the meter. Pulse Input The board contains two pulse inputs for connection to external metering devices which have a dry-contact type of output pulse. The maximum frequency of pulses accepted by the Class 3400 meter is 10Hz. Pulse Output The board contains two pulse outputs for use by Building Automation Systems, etc.
CLASS 3400 METER 12.1 Expansion Board Connections + – INP1 + – INP2 + – OUT1 + – OUT2 IO - Terminals NC COM2 NO NC COM1 Relay - Terminals NO M33321 * The input terminals are used with “dry” contacts from third party metering devices. They can be used with mechanical or electronic contacts. If using electronic contacts, be sure to maintain polarity as shown. Maximum pulse frequency is 10Hz. The output terminals are rated for a maximum of 40 volts AC or DC. The maximum load is 400 ma.
CLASS 3400 METER 12.2 Pulse Type and Value The pulse outputs provided by the Class 3400 meter are watt-hours and var-hours. Output 1 is the watt-hour pulse and Output 2 is the var-hour pulse. The pulse value is dependant on the amperage size of the meter. See the chart below for the values. 62-0391-01 Meter Amps Welt-hours / pulse Var-hours / pulse 100 1.95313 1.95313 200 3.90625 3.90625 400 7.8125 7.8125 800 15.625 15.625 1800 31.25 31.25 3200 62.5 62.
CLASS 3400 METER 12.3 Load Control The Class 3400 Load Control relay is used to activate alarming or load control. The relay contacts are rated for 250 VAC and a maximum of 3 amps load. It can be used for direct control of alarms under 3 amps or as a pilot duty device for high loads. The relay set points are accessed through push buttons on the meter’s display board. The meter’s display screen indicates the load settings. a. LOAD: Present load on the meter b. LIMIT: Load Control set point c.
CLASS 3400 METER 13.0 FREQUENTLY ASKED QUESTIONS Q. When providing line voltage to the meter, can I tap off of the same breaker I am monitoring? A. Yes, the voltage can be pulled from the same breaker being monitored. Q. Can the meter’s line voltage wires be run in the same conduit as the sensor leads? A. Yes. There will be no effect if the sensor leads and line voltage wires are run in the same conduit. Q. Can the meter’s communication wires and line voltage be run in the same conduit? A.
CLASS 3400 METER 13.0 FREQUENTLY ASKED QUESTIONS (CONTINUED) Q. The load I need to monitor has parallel feeds. How do I install the current sensors for this application? A. There are two ways you can monitor parallel feeds. The easiest and preferred method is to clamp the sensors around all feed wires for each phase. The second way to monitor parallel feeds is to clamp the sensor around one of the feed wires for each phase.
CLASS 3400 METER 14.0 PROTOCOL DESCRIPTIONS Modbus Integer Registers: Address Reg Description Units CL 3400 40001* 2 Energy delivered kWh Pulse R/W 40003 2 Energy received kWh Pulse R/W 40005 2 Reactive energy delivered kVARh Pulse R/W 40007 2 Reactive energy received kVARh Pulse R/W * To clear single meter kWh/kVARh, set multiple points at 40001 for 8 points with data set to 0000 0000 0000 0000 0000 0000 0000 0000. Jumper J6 must be closed.
CLASS 3400 METER Modbus Float Registers: Address Reg Description Units CL 3400 41047 2 Power factor, phase A % PF R 41049 2 Power factor, phase B % PF R 41051 2 Power factor, phase C % PF R 41053 2 Current, phase A Amps R 41055 2 Current, phase B Amps R 41057 2 Current, phase C Amps R 41059 2 Voltage, line to neutral, phase A-N Volts-N R 41061 2 Voltage, line to neutral, phase B-N Volts-N R 41063 2 Voltage, line to neutral, phase C-N Volts-N R 41065 2 Volt
CLASS 3400 METER BACnet Object Descriptors: BACnet Object ID Description Units BACnet Property CL 3400 8 Analog Input Power factor % PF Present Value R 9 Analog Input Current total Amps Present Value R 10 Analog Input Current average Amps Present Value R 11 Analog Input Voltage line-neutral Volts-N Present Value R 12 Analog Input Voltage line-line Volts-L Present Value R 13 Analog Input Frequency Hz Present Value R 14 Analog Input Phase angle Degree Present Value R 15
CLASS 3400 METER BACnet Object Descriptors: ID 41 BACnet Object Description BACnet Property Units CL 3400 Analog Input Reserve C 42* Analog Input External Input 1 Pulse Present Value R 43* Analog Input External Input 2 Pulse Present Value R *External inputs are standard on Class 5000 meters and optional on Class 3400 meters (Part of Expanded Feature Package).
CLASS 3400 METER Lonworks SNVT Types Point Map: Network Variable Name SNVT Type Description Units CL3400 nvoAppar_Pwr_PhA SNVT_count_inc_f Apparent power, phase A kVA R nvoAppar_Pwr_PhB SNVT_count_inc_f Apparent power, phase B kVA R nvoAppar_Pwr_PhC SNVT_count_inc_f Apparent power, phase C kVA R nvoPwr_Fact_PhA SNVT_pwr_fact_f Power factor, phase A % PF R nvoPwr_Fact_PhB SNVT_pwr_fact_f Power factor, phase B % PF R nvoPwr_Fact_PhC SNVT_pwr_fact_f Power factor, phase C % PF R nv
CLASS 3400 METER 15.0 METER LIMITED WARRANTY Subject to the exclusions listed below, E-Mon will either repair or replace (at its option) any product that it manufactures and which contains a defect in material or workmanship. The following exclusions apply: 1. 2. 3. 4. 5. 6. 7. 8. This Limited Warranty is only effective for a period of (5) five years following the date of manufacture when installed in accordance with manufacturer’s instructions by qualified personnel.
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CLASS 3400 METER E-Mon 850 Town Center Drive Langhorne, PA 19047 www.emon.com info@emon.com ® U.S. Registered Trademark © 2012 E-Mon 62-0391-01 JPG Rev.
