Echelon ANSI Electric Meter v3.
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FCC Compliance If the WAN Card will be integrated into an ANSI IP Meter and used within the United States of America, then the complete ANSI IP Meter (including the WAN Card) must comply with FCC regulations. In addition, the accompanying documentation for the complete product would need to include a notice such as the following: This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules per sections 15.107 and 15.109.
Table of Contents Introduction 1 About This Guide............................................................................................. 1 Related Documentation ................................................................................... 1 Meter Features ................................................................................................ 1 Meter Installation 1 Safety Warnings ..............................................................................................
Tilt Conditions ........................................................................................... 1 Load Disconnect.............................................................................................. 1 Display Indicator for Disconnect Position and Load Side Voltage............ 1 Disconnect Push Button............................................................................ 1 Remote Disconnect...................................................................................
Demand Resets............................................................................................... 1 Reset Lockout Period................................................................................ 1 Demand Interruptions ...................................................................................... 1 End of Interval Display Icon............................................................................. 1 MEP Devices 1 MEP Interface .................................................
1 Introduction This chapter provides a description of the content of this document, a list of related documentation, and an overview of the capabilities of the Echelon ANSI electric meter. ANSI Electric Meter v3.
About This Guide This document describes the installation and operation of the Echelon ANSI 8301183301 electric meter, and is intended for use by metering administrators, installers, and meter technicians. ANSI electric meters are designed to be part of a utility metering system that is supervised by Echelon’s Data Concentrator in conjunction with Networked Energy Services (NES) System Software.
Meter display provides a scrolling list of up to 30 items (with an ID code for each item) including energy data, time, date, remaining credit (if prepay metering is in effect), tariff-specific energy values, and more. Push button provides immediate advancement to next display item and is used to silence the audible prepay low credit alarm.
An optional MEP (Multipurpose Expansion Port) port that is capable of connecting to a smart device and allowing that device (referred to as a MEP device) to access meter data, run meter procedures, and have limited write access to the meter. Figure 1.
2 Meter Installation This chapter includes safety warnings, meter installation instructions, and initial start-up procedures. ANSI Electric Meter v3.
Safety Warnings Before you install and operate your meters, you should be familiar with all regulatory agency, manufacturer, and utility industry safety precautions. Observe these safety precautions during all steps of meter installation, operation, and service. Failure to comply with these precautions, or with specific warnings or instructions elsewhere in this guide, violates safety standards of design, manufacture, and the intended use of the meter.
Mounting the Meter The form, current class and rated voltage of the ANSI meter are marked on the front of the meter, as shown in Figure 2.1. Before mounting the meter in its socket, you should make sure that these settings match the form, maximum current and rated voltage for the socket you are using. Operating Environment The meter is designed to operate in an indoor or outdoor (IP54 rating) location, in a nonhazardous environment.
Meter Test Links The test links of the back of the ANSI meter must be in the closed position before you mount and begin using the ANSI meter, as shown in Figure 2.2. Meter Test Links Figure 2.
Determining Load Disconnect and Relay State without Line Power The meter’s load disconnect contactor and control relay open or closed state cannot be visually determined before line power is supplied to the meter. When in the closed state, power will be delivered to the load when line power is supplied to the meter. Determining Load Disconnect State To determine if the meter load disconnect contactor is in the open or closed state when power is not supplied to the meter, follow this procedure: 1.
Testing for Correct Meter Operation When power is applied to the meter, the following can be checked to determine if the meter is operating properly: Function/Operation Indicated By Power to meter is On The display is active (shows information). Power to load is On (load disconnect contactor is in the On, or closed, position) The “disconnect open” display indicator is Not illuminated, indicating that the disconnect contactor is closed.
Test Mode Test mode is an optional feature that is only supported by some NES version 3.1 ANSI meters. While in test mode, the meter will suspend standard energy accumulations, standard demand calculations, power quality analysis, tariff register calculations, automated control of the disconnect switch, and automated control of the control relay.
3 Meter Operation This chapter describes the operation and features of the Echelon ANSI electric meters.
Meter Operation Overview The Echelon ANSI electric meter provides a comprehensive set of energy services when operating within the NES system. The meter supplies automatic encrypted data transfer and diagnostic reporting to NES System Software by communicating with an Echelon Data Concentrator over local power lines using PLC technology. An optical port provides local communication for direct programming and data reading.
Item Displayed Value Format Indicator All segments lit Function All Confirms proper operation of the display. Value ID code Any letter or number x.x.x.x. Identification code for present displayed value. Maximum of 4 characters, letters or numbers. Value xxxxx.x.x.x Number value. Maximum of 8 numbers and decimal point of 3 possible places. T1, T2, T3, T4 Present tariff period Indicates the present operating tariff period. Forward active energy Indicates that forward active energy is flowing.
Item Displayed Value Format Indicator Function L3L2L1 Reverse 3-phase wiring Indicates that 3-phase wiring is installed in the wrong order. (Does not detect reversed line and load wires or swapped line and neutral.) Tamper switch open Indicates that the main cover tamper switch is open. The cover is not installed or not installed correctly. PLC traffic detection This icon is lit when PLC communication on the network has been detected by the meter.
Item Displayed Value Format Indicator Function Disconnect status This display indicator, can be configured by the user to either reflect the current state of the load disconnect contactor, or to indicate whether load side voltage has been detected by the meter. If it is configured to reflect the current state of the load disconnect contactor, it will be illuminated when the load disconnect contactor is in the open position.
Item Displayed Value Format Indicator ANSI meter form indicator Function 2S MP Name plate message MEP communication indicators This icon will be used to display the present ANSI meter form being used. All ANSI v3.1 meters use form 2S. Indicates that the MEP device connected to the meter is registered. These icons can be configured to flash or remain on when communication with a MEP device is occurring.
Nameplate Message Identifiers Various messages may be listed on the front of the meter in the nameplate area. These messages describe certain states, functions, or actions that could be operating in the meter. When any of the message states or functions are active in the meter, the corresponding identifier F0, F1, or F2 is illuminated on the display. The meter nameplate also includes an erasable strip that can be used to add more data to the meter display.
Value Type Item Description Summation / accumulators Import reactive kvarh L1+L2+L3 Summation / accumulators Export reactive kvarh L1+L2+L3 Summation / accumulators Power outage duration minutes (accumulation of all outages since last reset) Summation / accumulators Power outage count (number of outages since count was last reset to 0) Summation / accumulators Error Counter - A count of the number of alarms that have occurred for RAM Failure, Non-Volatile Memory Failure, Clock Error, Measurement
Value Type Item Description Self-read/One-time-read/ Historical demand reset Forward – reverse active kWh L1+L2+L3 Self-read/One-time-read/ Historical demand reset Import reactive kvarh L1+L2+L3 Self-read/One-time-read/ Historical demand reset Export reactive kvarh L1+L2+L3 Self-read/One-time-read/ Historical demand reset Power outage duration seconds (accumulation of all outages since last reset) Self-read/One-time-read/ Historical demand reset Power outage count (number of outages since count w
Display Advance: When pushed and released in less than 3 seconds, the display immediately advances to the next item. After a change to a new item due to the activation of the push button, the display shows the item until either the button is pushed again or the regular scroll time (on time) expires, whichever occurs first. Once the regular scroll time expires, the display returns to its normal operation.
Error or Caution Item Display Code Description Self-Test Schedule RAM Failure 00000008 Memory corruption occurred. Upon occurrence Display Code Digit Position 7 ROM Failure 00000010 Invalid CRC in Bootrom Non-Volatile Memory Failure 00000020 CRC verification failed. Memory may have been corrupted. At power-up Clock Error 00000040 Loss of clock memory data or clock functions have been suspended due to meter having been without AC power for an extended period of time.
Error or Caution Item Display Code Control Relay Open 08000000 Description Self-Test Schedule Control relay is in open state. Upon occurrence and every hour while relay is open Display Code Digit Position 1 Phase Loss 10000000 Phase loss detected. By default, this indicates that voltage Upon below 61% of rated voltage has been detected on at least occurrence one phase. However, the percentage that constitutes a phase loss is user-configurable. Considered a possible tamper event.
Error or Caution Item Display Code Description Self-Test Schedule MEP Alarm 00000200 A MEP alarm has occurred. Upon occurrence Reserved 00000400 N/A N/A Phase Rotation Changed 00000800 Wiring positions for a 3-phase meter have changed, or any Once per of the phases are inactive or missing. second Display Code Digit Position 5 Prepay Credit Exhausted 00001000 Prepay credit has gone to 0 (zero).
added value of the code digits exceeds 9, it will be represented by a hexadecimal letter. The following table shows the numeric equivalent of the hexadecimal letter. Hexadecimal Character Shown on Display Numeric Value A 10 B 11 C 12 D 13 E 14 F 15 Figure 3.3 shows the reference numbering of the display digit positions, and the 4character value ID location. Diagnostic code display digit position: 1 2 3 4 5 6 7 8 4-character value ID. Figure 3.3: Display, All Segments Lit.
Look-Up Table for Code Combinations The following look-up tables show the diagnostic events indicated for all possible display characters in each digit position for screen 1 and screen 2. Codes for screen 1: Digit Position – Screen 1 Display Character 1 2 4 (not used) 5 7 8 Phase Loss 2 Phase Inv. Self-Read Rev. Energy NV Mem Fail 3 Phase Loss Cover Off ROM Failure Phase Inv. Self-Read Rev.
Digit Position – Screen 1 Display Character 1 2 3 (not used) 4 (not used) 5 6 7 8 General Error Relay Open Disconnect Switch Error Meas. Error C PLC Fail Disconnect Open Backup Incomplete Clock Error (=12) General Error Relay Open Disconnect Switch Error Meas. Error RAM Failure Phase Loss LP Overflow Cover Off ROM Failure PLC Fail Disconnect Open Backup Incomplete Clock Error General Error Relay Open Disconnect Switch Error Meas. Error Phase Inv. Self-Read Rev.
Digit Position – Screen 2 Display Character 1 (not used) 2 (not used) 3 (not used) 4 (not used) 5 6 7 4 Unread Access Entries Exist Lockout in Load Override Profile Event Log Overflow N/A 5 Event Log Unread Entries Prepay Exhausted MEP Install N/A / Remove Bad PW Unread Access Entries Exist Lockout in Load Override Profile Event Log Overflow N/A Code Bank Changed 0 V Current THD Event Detected Prepay Warn Ack N/A SW CRC Error No Comm Unread Acces Entries Exist Lockout in Load Over
Digit Position – Screen 2 Display Character 1 (not used) 2 (not used) 3 (not used) 4 (not used) 5 6 7 8 Power Quality Event Detected Mfg Log Entry Available Phase Changed LP Fill Error N/A Access Lockout Override Event Log Overflow N/A Code Bank Changed Power Quality Event Detected Mfg Log Entry Available Phase Changed LP Fill Error N/A Dimension Change Prepay Exhausted MEP Install N/A / Remove Bad PW Access Lockout Override Event Log Overflow N/A Code Bank Changed 0 V Current
occurs, the status must return to normal for at least 1 second for another power quality event to be recorded. The meter provides power quality measurements for: Voltage (RMS) sag (under voltage): Records the number of voltage sag occurrences on any one phase. A voltage sag must last continuously for the time set in the meter Sag/Swell Duration Threshold to be recorded as an event. The threshold that determines if a voltage sag is recorded, is configurable as a percentage below the factory-rated voltage.
configured by the user. Phase loss also causes a diagnostic code to be activated. Total harmonic distortion (THD): Records three types of total harmonic distortion: voltage total harmonic distortion (VTHD), current total harmonic distortion (ITHD) and VA (volts-amperes) total harmonic distortion (VATHD). THD is a ratio of the voltage or current at harmonic frequencies to the voltage or current at the fundamental frequency for the meter, expressed as a percentage.
10 ITHD Irms of Nth order harmonic N 2 Irms of fundamental component The following method is used to calculate VATHD. 10 VATHD (Vrms of Nth order harmonic * Irms of Nth order harmonic ) N 2 Vrms of fundamental component * Irms of fundamental component Event Log The event log records the occurrence of meter events and fault conditions that are selected to be logged. The date and time of each event occurrence is included in the log.
Status Name Description Time Changed (new time) If procedure 10 (absolute change) is used 4 for the time change, this event time is the new time that was set. If procedure 2064 (gradual change) is used for the time change, this event time is the resulting new time after completion of the gradual change. Meter Accessed for Write Date and time an outside source wrote data into a meter table or via a meter procedure into a table.
Status Name Description Event ID Descriptor Season Change A TOU season change occurred. 24 0 = Season 1 1 = Season 2 2 = Season 3 3 = Season 4 Special Schedule A day deemed as a TOU holiday. Activation 26 0 = Special schedule A 1 = Special schedule B Tier Switch Change The meter switched from one tariff to another per day table settings or via procedure (forced tariff change). 27 0 = Tariff 1 1 = Tariff 2 2 = Tariff 3 3 = Tariff 4 Pending Table Activation The TOU pending table was activated.
Status Name Description Event ID Load Disconnect The state of the load disconnect 66 State Changed contactor has changed. This event codes return indicate the load disconnect contactor’s current state, as well as the reason for the change in state. Control Relay Open Control relay is in open state. 72 Code Bank Changed Active (executing) code bank has been changed. 78 Load Profile Backfill Failed Load profile was not backfilled completely 79 at power-up because meter was off across midnight.
Status Name Description Event ID Descriptor Log Dimension Changed The dimensions or semantics of the meter’s interface have changed. 88 0000 = Initial meter load 0002 = Interface compatibility setting changed during commissioning. 0003 = Interface compatibility changed via a table write. 0xxx = Procedure invoked causing interface compatibility change, where xxx is the number of the procedure invoking the change Unread Load Profile Entries Exist Unread entries exist in the load profile log.
Status Name Description Event ID Descriptor Maximum Power The maximum power level has changed. 97 Level Threshold Switched 0 = Max power level changed from primary to secondary 1 = Max power level changed from secondary to primary. The event is not generated if switch is attempted when meter is already in primary mode.
Status Name Description Event ID Average Value for Current THD Event Average THD of last finished THD event, 104 for the peroid that THD goes beyond or below the threshold Descriptor Bits 0-1 of the argument is used to indicate the phase: 0 = phase A 1 = phase B 2 = phase C The remaining bits are used for the ITHD value.
Alarm Name Description Event ID Descriptor RAM Failure Memory corruption occurred. 39 1 = LP value corrupted 3 = Disconnect or control relay value corrupted 4 = RAM memory test error 5 = RTC code in NVRAM corrupted 6 = NVRAM alarm variable corrupted ROM Failure Invalid CRC in Bootrom. 40 Non-Volatile Memory Failure CRC verification failed. Memory may have been corrupted.
Alarm Name Description Disconnect Switch Error Disconnect open/closed state may be 50 incorrect. This generally indicates that the internal state of the load disconnect contact does not match the acutal physical state of the load disconnect contactor. Depending on your meter’s configuration, this even may also incicate that the meter has detected load side voltage. You can configure the meter to trigger either this alarm or the Load Side Voltage Detected alarm when load side voltage is detected.
Alarm Name Description Event ID Current on Current flow greater than 2A detected on 74 Missing or a phase with low or no voltage. This Unused Phase usually indicates that a Potential Test Link is open. Considered a possible tamper event. Note: This event is reported again on every power-up until the condition no longer exists.
Alarm Name Description Event ID Descriptor Access Lockout Override The access lockout settings have been deactivated. 90 0 = Override condition gone 1 = Override detected Power Quality A power quality event (sag/surge/over- 91 State Changed current) has been detected. Bit mask, bit value 1 means event detected, value 0 means event cleared.
Alarm Name Description Event ID Load Side Voltage Detected Depending on your meter’s 107 configuration, this even may incicate that the meter has detected load side voltage when the load disconnect contactor is in the open state. You can configure the meter to trigger either this alarm or the Disconnect Switch Error alarm when load side voltage is detected. By default, the meter will use the Load Side Voltage Detected alarm, unless your meter was upgraded to use the v3.
Table Name Description 2048 Calibration Data Contains the meter calibration data for power measurement. 2049 KYZ Setup Contains the KYZ pulse rate and width. 2050 Clock Calibration Contains the calibration parameters for the Real Time Clock. 2051 Utility Information 2 The utility serial number, program date and time, program number and program ID, and metering point identifier.
Table Name Description 2088 Demand Configuration Contains some configuration for demand and demand reset. Changing the demand reset time of day in this table could cause a reset cycle to be missed. 2089 Historical Demand Reset Log Contains an adjustable log of previous demand reset data, including the latest demand reset data. 2093 MEP Recurring Log Contains a log of MEP billing data. 2094 Control Output Read-Only Data Contains control output data that are read only.
Standard Procedures The following are the standard meter procedures that can be selected for inclusion in the event log, when the status event Procedure Invoked is also selected. Procedure Name Description 4 Reset List Pointers Changes the number of unread records for load profile, self-read, or when the event log is set to zero, and clears the selected list. 5 Update Last Read Entry Changes the number of unread records for load profile, self-read or event log.
Procedure Name Description 2064 Update Clock Gradually Performs a gradual clock adjustment to avoid skipping scheduled events and load profile records. 2066 Clear MEP Alarms Clears the MEP (Multi-Purpose Expansion Port) meter detected and device alarms from table MT14. 2068 Change PLC Encryption Key Used to modify the PLC encryption key value. 2069 Add Prepay Credit Used to add prepay total or emergency credit.
Main Cover Removal Removal of the meter main cover will initiate a tamper event. A cover removal tamper event is recorded whether power is on or off to the meter. Once power is restored, a report of the tamper condition is sent to NES System Software, if the meter is communicating with a Data Concentrator. When the meter is installed, or the main cover is removed for servicing, a tamper diagnostic event is set in the meter.
Magnetic Tamper The meter is equipped with a sensor that detects large external magnetic fields. If an external magnetic field is detected, the meter will automatically set an alarm. The alarm is read and reset through NES System Software, or via the local optical communications port. Typically, the magnetic tamper sensor is used to detect potential fraud when strong magnets (such as rare earth magnets) are placed in close proximity to the meter.
from a portable generator or solar panel). This is done for safety considerations, as it is important to note that Disconnect Push Button The push button on the front of the meter closes the load disconnect contactor. If a command has been sent to the meter to set the load disconnect into the off state, manual activation of the button will not turn the disconnect contactor on. The length of time that the button must be pushed to activate the load disconnect contactor is programmable. The range is 0 to 2.
Locking the Disconnect in the Open State You can configure the meter to lock the load disconnect contactor in the open state at a specific time for a set period of time. This procedure can also be used to cancel whatever schedule currently exists regarding the status of the load disconnect contactor. The load disconnect contactor will be locked open at the scheduled date/time until the configured duration has passed.
Emergency credit can be used with either standard prepay mode or Prepay Maximum Power mode. If used with Prepay Maximum Power mode, either exhaustion of emergency credit or exceeding the maximum power threshold will cause the load disconnect to be turned off. Audible Low Prepay Credit Alarm The audible meter alarm can be configured to activate on a low or exhausted prepay credit level. The level of activation is configurable. You can turn the alarm off by pushing the button on the front of the meter.
power level setting, in watts, at which the load disconnect contactor will turn off. This value is the sum of all 3 phases in a polyphase meter. The minimum value is 1,000 and the maximum is 72,000. As an example, a setting of 27,600 watts equals 40 amps per phase at 230 volts in a three-phase meter. Switching the Maximum Power Level Thresholds The meter can be programmed to switch from Primary Power Level Threshold to the Secondary Power Level Threshold at a specific time.
Old Command New Command Comments and remains at that level until the switch duration expires. In the past In the future The meter is already using the Secondary Maximum Power Level Threshold when the new command is received. Since the meter is to ignore the old command and only follow the new command (which isn’t active yet), it will immediately switch back to the Primary Maximum Power Level Threshold. The new command will be executed at its specified start time for its specified duration.
Power Threshold on Exhausted Credit This is the active power level setting, in watts, at which the load disconnect turns off when prepay credit is exhausted (goes to 0). The Maximum Power Duration Threshold setting also affects this feature.
Disconnect Switch Error Event Argument Formats The Disconnect Switch Error event has several different arguments that contain information about why the event was logged and the state of the meter at that time. In summary, an argument value of 0x0054 or 0x005C means that load side generation was detected, and any other argument is indicative of an unexpected fault related to the load disconnect contactor. Below is more detail on the argument encoding.
Bit 6: Load side voltage status o 0 = none o 1 = present Bits 7..15: Instantaneous Power Level o Sum of first four registers in ST28 (0 implies no power consumption measured in last 50 cycles) Note: Remember that your meter may be configured to use the Load Side Voltage Detected error to indicate when load side voltage is present, in which case the values listed above for Argument Format 4 should not be used.
same time. When the maximum random number of seconds is set to 0 (zero), the relay will close immediately. The control relay is a single-pole single-throw normally-open (1P-1T NO) dry (no output voltage) switch. The maximum load rating is 5A. Voltages above 40V, but not exceeding 250V can be routed through the relay. Note: The control relay is not fully electrically isolated in regard to certain safety considerations. It is physically isolated.
Note: The KZ output terminals are electrically and physically isolated in the Echelon meter in regard to safety considerations. Optical Port Communication An optical port is provided for local communications at 9600 Baud. The probe must be connected to a computer that is running the Echelon Provisioning Tool application. The computer can perform programming operations and may also be used to view accumulated data and diagnostic information.
Received Message Quality Indicator Once PLC communication with the specific meter occurs, the Received Message Quality indicator (or at least part of it) is also displayed. It shows the quality of the most recently received PLC message, in addition to indicating that PLC communication occurred with that specific meter. PLC communication is checked for received-message quality once each minute.
Clock Settings The meter clock can be configured to synchronize itself internally at all times, or to synchronize itself with the utility line’s frequency. If the utility line’s frequency is selected and there is a power outage, the meter will synchronize the clock internally until power is restored, at which point it will re-synchronize itself with the utility line’s frequency. Note: You can change this clock setting with the NES Provisioning Tool.
The measured electrical values are: Active power (kW), summation: forward, reverse Active energy (kWh), summation: forward, reverse, forward + reverse, forward – reverse. Forward – reverse is limited to zero at the bottom of the range, negative values are not accumulated.
Self-Reads The meter can be programmed to perform an automatic periodic reading of measurement data, along with a timestamp. This is called a self-read. The time of day that a self-read occurs is configurable. A self-read can be set to repeat daily, weekly, monthly, or yearly. If the meter is powered-down at the time a self-read is scheduled to occur, the selfread will be recorded the next time the meter is powered-up, with a timestamp of when the actual reading occurred.
energy values are stored as totals into the four tariff registers based on the TOU schedule. The available options of the perpetual TOU calendar are: Day schedules (per season): o 1 weekday schedule o 1 Saturday schedule o 1 Sunday schedule o 2 holiday schedules 4 seasons with programmable start dates 15 holidays per year 1 independent self-read schedule per year 10 tier switches per day 1 date for DST on, 1 date for DST off, with programmable time and minutes adjustment.
Up to 16 channels can be recorded on the same interval. The 16 channels are selected from the measured electrical values, which are listed in the “Energy Measurements and Calculations” section on page 1. All channels are stored as total values (no differential values). The number of storage days available in the load profile register depends on the meter channel and log interval configuration, as well as the memory available to the load profile log.
Number of Channels 6 66 Log Interval 15 minutes Maximum Days Number of Channels Log Interval 8 6 15 minutes Maximum Days 17 6 5 minutes 2 6 5 minutes 7 1 day 606 7 1 day 5 7 60 minutes 29 7 60 minutes 62 7 30 minutes 14 7 30 minutes 31 7 15 minutes 7 7 15 minutes 15 7 5 minutes 2 7 5 minutes 5 8 1 day 535 8 1 day 8 60 minutes 25 8 60 minutes 54 8 30 minutes 12 8 30 minutes 27 8 15 minutes 6 8 15 minutes 13 8 5 minutes 2 8 5 minutes 4
Number of Channels Log Interval Maximum Days Number of Channels Log Interval Maximum Days 14 60 minutes 14 14 60 minutes 31 14 30 minutes 7 14 30 minutes 15 14 15 minutes 3 14 15 minutes 7 14 5 minutes 1 14 5 minutes 2 15 1 day 311 15 1 day 653 15 60 minutes 14 15 60 minutes 29 15 30 minutes 7 15 30 minutes 14 15 15 minutes 3 15 15 minutes 7 15 5 minutes 1 15 5 minutes 2 16 1 day 291 16 1 day 612 16 60 minutes 13 16 60 minutes 27 16 30
Self-read (billing reads) Meter Data Collection Meter log data and diagnostic information is normally collected from meters by a Data Concentrator, which in-turn sends the data to NES System Software. Data and diagnostics can also be read and viewed in the Provisioning Tool application by connecting a computer that is running the Provisioning Tool to the meter’s optical port.
Note: This feature is subject to local regulations that may prohibit remote updates. ANSI Electric Meter v3.
4 Demand Metering The meter offers various types of demand metering calculations that can be performed to measure the peak active and reactive power delivered to or by the system.
Demand Calculations and Settings The ANSI v3.1 meter (83011-83301) offers various types of demand calculations that can be performed to measure the peak active and reactive power being delivered to the system over a designated time period. Demand measurements are useful in that they provide information on peak usage as opposed to accumulation over time, and by using averages instead of instantaneous maximum power values are not impacted by spikes and short surges.
to 5 minutes in this case, and you would set the demand multiplier to 9, so that you would have main interval of 45 minutes. In this scenario, if the meter begins calculating demand at 1:00, then the first main interval would elapse at 1:45. At 1:45 a demand record would be made for the first interval: the time period from 1:00-1:45. At 1:50, the end of the next sub-interval, a new demand record would be made for the time period from 1:05-1:50.
Figure 4.2 shows a line graph charting two demand values. In this scenario, the main interval is set to 10 minutes, so values for each of the 6 intervals are recorded at 10, 20, 30, 40, 50, and 60 minutes. Figure 4.2 Block Demand Demand Calculations The previous section describes how the meter can calculate and record demand measurements. This section describes which energy measurements can be made using demand.
You can switch which type of calculation will be performed. If energy usage decreases because of forward and reverse configuration, the present demand is calculated to be 0. Previous Demand. Previous demand is the demand value for the last complete or partial demand interval. The previous demand is updated every time a sub-interval expires, and the demand value returned represents the accumulated energy for the main interval divided by the interval time.
down at the time a demand reset was scheduled to occur, the demand reset data will be recorded at the subsequent power-up with the timestamp of the power-up event. You can also trigger a demand reset at any time manually by pressing the Demand Reset push button on the meter front cover for 2 seconds and then releasing it, or by using NES System Software. The Demand Reset button can be locked with a wire to prevent it from being activated, as shown in Figure 1.1.
76 Pulse Data Collection
5 MEP Devices This chapter provides an introduction to an optional new bi-directional serial port that is called a MEP port. The MEP port will allow a connected smart device to access meter data, run meter procedures, and have limited write access to the meter. ANSI Electric Meter v3.
MEP Interface The ANSI v3.1 meter (83011-83301) optionally provides a new bi-directional, isolated UART serial port that is called a MEP port. The MEP port allows a connected smart device to access meter data, run meter procedures, and have limited write access to the meter. The device that connects to the meter using the MEP port is referred to as a MEP device. The MEP device is controlled and accessed through NES in largely the same way as an M-Bus device is.
ANSI Electric Meter v3.
Appendix A Meter Troubleshooting The following table describes problems that could occur with the Echelon ANSI electric meters, possible causes, and the most likely solutions: Problem Possible Cause Solution Load disconnect contactor will not turn on when button is pushed Load disconnect is set to off-state in meter. Contact utility service center and have reconnect command sent. Send reconnect command directly to meter via optical port using a computer running Provisioning Tool application.
ANSI Electric Meter v3.
Appendix B Meter Specifications The following are the specifications for the Echelon ANSI electric meters: Category Detail Standards met: ANSI C12.1, ANSI C12.10, ANSI C12.18, ANSI C12.19, ANSI C12.20 Accuracy: Active: Class 0.5 Reactive: Class 0.
Category Detail Nominal voltage: Dependent on ANSI form and model Form 2S: 240 VAC Input voltage range: -20% to +15% of nominal voltage Frequency: 60 Hz (+/- 5%) Current: Dependent on ANSI form and model Form 2S: CL200, TA 30A Timing: Real-time clock accurate to +/- .5 seconds per day, battery-backed Data logging intervals: User-selected at 5, 15, 30, 60 minutes, or 1 day Verification output: 2 pulse-output LEDs representing kWh and kvarh.
Appendix C Glossary The following describes terms as they are used in this document and other related NES documents. Active Energy The measurement of active power used over a period of time. Active Power Total power is the product of the voltage and current. Active power is the part of total power that is expended due to a resistive load. It is considered to do the work in the system and is also called the real power.
DC or DCX A generic term referring to any Echelon Data Concentrator. Demand Metering The meter optionally offers various types of demand calculations that can be performed to measure the peak active and reactive power being delivered to the system. Demand measurements are useful in that they provide information on peak usage as opposed to accumulation over time, and by using averages instead of instantaneous maximum power values are not impacted by spikes and short surges.
Networked Energy Services (NES) Echelon’s Networked Energy Services (NES) system is an open, standards-based, adaptable infrastructure that enables a comprehensive set of utility applications. The NES system provides a bi-directional networked platform upon which many services — AMR, prepaid metering, distribution management, outage detection, and more — can be delivered. Optical Port Infrared communication port per ANSI C12.18. Used by the Provisioning Tool to talk to meters and Data Concentrators.
Read-Only Key Allows data to only be read from the meter when it is accessed via the optical port. A factory option can allow the date and time to also be changed with this key. Reverse (Export) Energy Energy delivered by the customer to the utility. Often considered a tamper condition if the user is not legitimately generating energy (for example, solar electric power) into the utility grid. Rolling Demand A way to perform demand calculations.
Utility Enterprise Applications The hardware and software infrastructure present at a utility that performs customer and distribution network functions, such as billing, customer care, and so on. The NES system integrates with the existing utility enterprise system to provide automatic communication with metering devices. Utility Information Architecture The Utility Information Architecture serves as the integration point between NES System Software and the Utility Enterprise Applications.
Appendix D Model Changes Model 83011-83301 Changes The following describes significant changes to model 83011-83301 of the Echelon electric ANSI meter as compared to the previous model (83010 through 83300), and any additional significant changes to this document. Item Added or Changed Reference Pages Test mode is an optional feature that is only supported by some NES version 3.1 ANSI meters.
Item Added or Changed Reference Pages New standard and manufacturer tables and procedures are now available. “Event Log” on page 1 The meter includes a sensor that will detect when the meter has been tilted, indicating that it may have been moved or tampered with. “Tilt Conditions” on page 1 Multiple enhancements have been made to the load disconnect contactor, including the following: “Load Disconnect” on page 1 The capability to turn the load disconnect contactor off remotely can be disabled.
