Echelon 79010-01, 79010-02 User Manual

Echelon

ANSI Electric Meter v3.1

User’s Guide

078-0384-01 Rev 01

PRELIMINARY DRAFT

Echelon, Networked Energy Services Powered By Echelon, NES Powered By Echelon and the Echelon logo are registered trademarks of Echelon Corporation.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Echelon Corporation.

This document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by Echelon Corporation. Echelon Corporation assumes no responsibility or liability for any errors or inaccuracies that may appear in this document.

Echelon ANSI Electric Meter v3.1 User’s Guide

Echelon Corporation 550 Meridian Ave San Jose, CA 95126, USA

www.echelon.com

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. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer’s instruction manual, may cause interference with radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures:

 Reorient or relocate the receiving antenna.  Increase the separation between the equipment and the receiver.  Connect the equipment into an outlet on a circuit different from that

which the receiver is connected.

 Consult the dealer or an experienced radio/television technician for help.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

RF Statements

This equipment also complies with the limits for wireless devices per sections 15.203,

15.205, 15.207, 15.209 and 15.247. It uses frequency 2.4GHz per IEEE 802.15.42006, and uses a frequency bandwidth from 2400MHz to 2483.5MHz.

This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

ANSI Electric Meter v3.1 User’s Guide i

Table of Contents

Introduction 1

About This Guide.............................................................................................1

Related Documentation...................................................................................1

Meter Features................................................................................................1

Meter Installation 1

Safety Warnings..............................................................................................1

Visual Meter Inspection.............................................................................1

Provisioning the Meter.....................................................................................1

Mounting the Meter..........................................................................................1

Operating Environment.............................................................................1

Mounting Surface ...............................................................................1

Meter Test Links........................................................................................1

Determining Load Disconnect and Relay State without Line Power...............1

Determining Load Disconnect State .........................................................1

Determining Control Relay State ..............................................................1

Testing for Correct Meter Operation................................................................1

Test Mode........................................................................................................1

Meter Operation 1

Meter Operation Overview...............................................................................1

Reading the Display ........................................................................................1

Error and Caution Display Messages .......................................................1

Display Value ID Code..............................................................................1

Nameplate Message Identifiers ................................................................1

Low Voltage Display..................................................................................1

Display Value Items.........................................................................................1

Push Button Operation....................................................................................1

Self Tests and Diagnostic Messages ..............................................................1

Understanding Display Diagnostic Codes ................................................1

Diagnostic Event Descriptions............................................................1

Reading Diagnostic Code Combinations............................................1

Diagnostic Code Interpretation Examples..........................................1

Look-Up Table for Code Combinations..............................................1

Power Quality ..................................................................................................1

THD Calculations......................................................................................1

Event Log.........................................................................................................1

Status Events .....................................................................................1

Alarm Events......................................................................................1

Standard Tables.................................................................................1

Manufacturer Tables...........................................................................1

Standard Procedures..........................................................................1

Manufacturer Procedures...................................................................1

Tamper Detection............................................................................................1

Main Cover Removal.................................................................................1

Display Indicator for Cover Tamper Switch........................................1

Reverse Energy ........................................................................................1

Phase Inversion ........................................................................................1

Current Flow with No Voltage...................................................................1

Magnetic Tamper......................................................................................1

ii Table of Contents

Tilt Conditions ...........................................................................................1

Load Disconnect..............................................................................................1

Display Indicator for Disconnect Position and Load Side Voltage............ 1

Disconnect Push Button............................................................................1

Remote Disconnect...................................................................................1

Disconnect Status.....................................................................................1

Locking the Disconnect in the Open State................................................1

Prepaid Metering.......................................................................................1

Switching to Maximum Power when Prepay is Exhausted ................1

Emergency Prepay Credit .................................................................. 1

Audible Low Prepay Credit Alarm ......................................................1

Meter Settings for Prepay...................................................................1

Maximum Power Disconnect ....................................................................1

Primary and Secondary Maximum Power Level Thresholds .............1

Primary and Secondary Maximum Power Duration Thresholds ........1

Disconnect Power Trip Point Source..................................................1

Power Threshold on Exhausted Credit...............................................1

Load Disconnect Re-Synchronization.......................................................1

Disconnect Switch Error Event Argument Formats............................1

Low Voltage Operation .............................................................................1

Control Relay...................................................................................................1

Display Indicator for Control Relay Position .............................................1

Remote Relay Status................................................................................1

Pulse Output Signal (KYZ) ..............................................................................1

Optical Port Communication............................................................................1

Power Line Carrier Communication ................................................................1

PLC Display Indicators..............................................................................1

PLC Traffic Detection Indicator ..........................................................1

Received Message Quality Indicator..................................................1

Battery Backup ................................................................................................1

Clock Settings.................................................................................................. 1

Load Profile Back-fill Upon Power-up..............................................................1

Start-up Time...................................................................................................1

Energy Measurements and Calculations.........................................................1

Energy Register Capacity................................................................................1

Error Occurrence Recording............................................................................1

Self-Reads.......................................................................................................1

One-Time Reads.............................................................................................1

Daily Energy Consumption..............................................................................1

Time-of-Use (TOU) Tariffs...............................................................................1

TOU Calendar Identifier............................................................................1

Pending TOU Calendar.............................................................................1

Load Profiles....................................................................................................1

Meter UTC and DST Time Assignment...........................................................1

Meter Parameters Set to UTC ..................................................................1

Meter Parameters Set to Local Time........................................................1

Meter Data Collection...................................................................................... 1

Read-Only Key..........................................................................................1

Security............................................................................................................1

Group Broadcasting.........................................................................................1

Meter Firmware Updates.................................................................................1

Demand Metering 1

Demand Calculations and Settings.................................................................1

Demand Settings.......................................................................................1

Demand Calculations................................................................................1

ANSI Electric Meter v3.1 User’s Guide iii

Demand Resets...............................................................................................1

Reset Lockout Period................................................................................ 1

Demand Interruptions......................................................................................1

End of Interval Display Icon.............................................................................1

MEP Devices 1

MEP Interface..................................................................................................1

Electrical Specification..............................................................................1

Meter Troubleshooting 1 Meter Specifications 1 Glossary 1 Model Changes 1

Model 83011-83301 Changes.........................................................................1

iv Table of Contents

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 v3.1 User’s Guide 1

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.

The following chapters are included:

 Chapter 1: Introduction  Chapter 2: Meter Installation  Chapter 3: Meter Operation  Chapter 4: Demand Metering  Chapter 5: MEP Devices  Appendix A: Meter Troubleshooting  Appendix B: Meter Specifications  Appendix C: Glossary  Appendix D: Model Changes

Related Documentation

The following Echelon documentation provides operating instructions and descriptions of the various components of the Networked Energy Services (NES) metering system:

 ANSI Electric Meter Quick Installation Guide  DC-1000/SL Data Concentrator User’s Guide  NES Provisioning Tool User’s Guide  NES System Getting Started Guide  NES System Software Installation Guide  NES System Software Programmer’s Guide  NES System Software API Reference Guide  NES System Software Version Compatibility Guide

Meter Features

Echelon electric meters and the NES system that the meters operate within provide a comprehensive set of energy services. Some of these services are: automated twoway meter reading, Time-of-Use metering, remote electronic disconnect and local physical reconnect, distribution system asset optimization, outage detection and restoration management, blackout and brownout detection, comprehensive revenue protection, real-time direct load control, and more.

ANSI electric meters include the following features:

 Power line carrier (PLC) communication with an Echelon Data Concentrator,

using Echelon’s A-Band power line carrier technology

 Optical communication port provides an interface for direct communication

with a computer or hand-held reader.

2 Introduction

 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.

 Display characters and icons indicate various operating conditions, such as:

when main cover is properly installed, that PLC communication has occurred,

and the open/closed state of the load disconnect and control relay.

 Nameplate message indicators are illuminated on the display when a listed

item or action is programmed into the meter.

 Load disconnect switch with prepay and remote disconnect capability. When

remotely set to off state, cannot be turned on manually. 200 amps maximum.

 Data log intervals of 5, 15, 30, 60 minutes, or 1-day.  Up to 180 days of single-channel load profile memory storage in meter at a

60-minute log interval and 2094 days at a 1-day interval. Up to 8 channels

can be recorded on the same interval.

 Four Time-of-Use kWh and kvarh tariff registers. Perpetual calendar: 4

seasons, 15 holidays. 2 holiday day schedules per season, 3 separate day

schedules per season, 10 tariff periods per day schedule.

 A second Time-of-Use calendar schedule can be programmed into the meter

for activation at a preset future date.

 Daylight Saving Time changeover with perpetual calendar.  Battery-backed Real Time Clock (RTC) to maintain time accuracy and

tamper detection during power outages.

 Alarms for customer tamper and meter operating variances.  Power quality measurements for: sag, swell, number of over-current

occurrences, number of long power outages, duration and time of the last 10

long power outages, number of short power outages, maximum and minimum

frequency, phase loss, and total harmonic distortion (THD) events.

 Prepay metering. Energy credit is loaded into the meter and customer power

is automatically turned off when credit becomes zero. Emergency credit

allows power to continue after standard credit is exhausted, with the option

of a reduced power mode. A configurable audible alarm warns customer of

low credit.

 Data transmission accuracy ensured using CRC for optical communication

and authentication and handshaking for PLC communication.

 Security is provided by password protection for optical communication,

encryption and authentication for PLC communication.

 Signal relay for control of external contactor or other devices, with activation

linked to the currently active tariff period or controlled by remote command

(optional feature).

 KYZ pulse output (optional feature).  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. Consult Chapter 4 for more information on demand metering.

ANSI Electric Meter v3.1 User’s Guide 3

 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 1.1: Echelon ANSI Electric Meter

4 Introduction

Meter Installation

This chapter includes safety warnings, meter installation instructions, and initial start-up procedures.

ANSI Electric Meter v3.1 User’s Guide 5

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. Echelon assumes no liability for failure to comply with these requirements.

The information presented in this guide is intended to be an aid to qualified metering personnel. It does not replace the extensive training necessary to handle metering equipment in a safe manner.

Safety Warning: Any work on or near energized meters or other metering

equipment presents the danger of electrical shock. Only qualified electricians and metering specialists should be authorized to work with the meters, in accordance with local utility safety practices, utility requirements, and other safety precautions as dictated by local code, regulations, or statutes.

Visual Meter Inspection

Before installing the meter, inspect the meter case, display, optical port, and blades to make sure they are not damaged.

Safety Warning: Return damaged meters and components to Echelon; do

not attempt to repair the damage. The meter has no user-serviceable parts. Any attempt to remove or repair internal parts voids the meter warranty.

Provisioning the Meter

Before a meter can operate correctly in your system, it must be configured with specific operating parameters. This configuration is called “provisioning” and is performed by writing programs with preset values into the meter, either from NES System Software via the Data Concentrator, or directly to the meter optical port from a computer using the NES Provisioning Tool application. The parameters in the Provisioning Tool programs are set by administrative staff at the governing utility, and the programs can be distributed to technicians for meter provisioning operations.

The meter provisioning may be performed by Echelon prior to shipment, at a service depot before transportation to the meter installation site, or at the installation site.

After a meter is installed, updates to program settings are usually performed by sending the updated information from NES System Software to the Data Concentrator that is supervising the meter. The Data Concentrator writes the update to the meter and confirms the successful implementation back to NES System Software. For more information on the Data Concentrator, see the DC-1000/SL and DC-1000/SLE Data Concentrator User’s Guide.

You can also use the Provisioning Tool to view meter data and diagnostic information. For instructions on provisioning meters, see the NES Provisioning Tool User’s Guide.

6 Meter Installation

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. You should make sure to mount the meter in a well-ventilated enclosure that will prevent condensation from forming inside the meter.

Mounting Surface

The meter is designed to be installed in an upright position on a flat vertical surface.

Figure 2.1 Form, Current Class and Rated Voltage

ANSI Electric Meter v3.1 User’s Guide 7

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 2.2 Meter Test Links

8 Meter Installation

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. Set a multi-meter to continuity test mode or use a continuity tester.

2. Connect one continuity test probe to L1 line-in terminal and one probe to L1 load

terminal.

3. If there is NO continuity in the signal path the disconnect is Open (Off). If there

IS continuity in the signal path the disconnect is Closed (On).

Determining Control Relay State

To determine if the control relay is in the open or closed state when power is not supplied to the meter, follow this procedure:

1. Set a multi-meter to continuity test mode or use a continuity tester.

2. Connect the continuity test probes to the two control relay wires.

3. If there is NO continuity in the signal path the control relay is Open (Off). If

there IS continuity in the signal path the control relay is Closed (On).

ANSI Electric Meter v3.1 User’s Guide 9

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)

All necessary phases are connected to the meter and providing voltage

Polyphase only: The phases are connected to the meter correctly (Does not detect reversed line and load wires or swapped line and neutral)

Polyphase only: The phases are not connected to the meter in the correct order (Does not detect every possible incorrect connection order such as L3L1L2, reversed line and load wires, or swapped line and neutral)

The metered building is consuming active energy (forward active)

The metered building is generating active energy (reverse active)

A self-test failed, a tamper condition has been detected, or an alarm condition has occurred

The main cover has been properly installed and the cover tamper switch is closed

PLC network communication is occurring

PLC communication has occurred with the meter

(See “Reading the Display” in Chapter 3 for more information)

The “disconnect open” display indicator is Not illuminated, indicating that the

disconnect contactor is closed.

The L1 and/or L2 phase indicators are lit on the display, signifying the phases that have voltage present

L1, L2, L3 (L1, L3 for 2s/12s) indicators are lit on the display (verification only available for 3-phase, 4-wire electrical service)

The ““ arrow is lit on the display

The ““ arrow is lit on the display

An error code may lock the display or a caution code may be shown at the end of the scrolling display list, if these codes have been configured to be active. See “Self Tests and Diagnostic Messages” on page 1 for information on messages

The “tamper switch open” display indicator is Not illuminated, indicating that the cover is installed properly

This icon is lit when PLC communication on the network has been detected by the meter. This icon can be used during installation to see if network communication can be ‘heard’ by the meter before the meter is accepted by the system as an active device. See “Power Line Carrier Communication” on page 1 for detailed information.

This icon indicates that PLC communication occurred with this specific meter within the last X minutes (X is configurable from 1 to 65535 minutes) and shows the quality of the most recent received PLC message.

See “Power Line Carrier Communication” on page 1 for detailed information.

10 Meter Installation

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. In addition, all standard operation demand calculations that were interrupted by test mode activation will be considered completed and the values will be calculated as if the full time of the demand interval has elapsed (the non-elapsed time is considered to have had an energy accumulation of zero). You may find test mode useful if you want to test the meter’s accuracy without disrupting its billing registers. The meter display includes an icon that will be enabled when the meter enters test mode.

ANSI Electric Meter v3.1 User’s Guide 11

Meter Operation

This chapter describes the operation and features of the Echelon ANSI electric meters.

12 Meter Operation

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.

The meter measures active power and energy for both forward and reverse, reactive power and energy for import and export, voltage, current, power factor, and frequency. Data can be recorded in up to 4 perpetual-calendar Time-of-Use (TOU) registers. The data can be logged in intervals of 5, 15, 30, 60 minutes, or 1-day, with up to 8 channels per interval.

A programmable display presents comprehensive local information on meter operation and customer power consumption. Additional messaging features supply power quality information and tamper detection. LEDs are included for test functions. An optional KYZ output is also available.

Remote or local disconnect of customer power allows automatic prepay metering functions, power limiting, and service cancellation control. An optional control relay can turn an external device on or off based on tariff periods, or by command from NES System Software or the Provisioning Tool.

NES version 3.1 meters optionally support demand metering, which offer various types of calculations that can be performed to measure the peak active and reactive power being delivered to the system over a designated time period. For more information on demand metering, see Chapter 4, Demand Metering.

NES version 3.1 meters also include a Multipurpose Expansion Port (MEP) that allows external MEP devices to connect to the meter and access meter data and run meter procedures. For more information on MEP devices, see Chapter 6, MEP Devices.

Reading the Display

The indicators on the meter display designate which value is being displayed and provide indication of various operating parameters. The format of the 8-digit value is configurable as to the number of digits, viewing of leading zeros, and the decimal point location. See the NES Provisioning Tool User’s Guide for information on configuring display options. Refer to Figure 3.1 and the following table for a description of the display features:

Value ID code, 4 characters.

Value, 8 digits.

Figure 3.1: Meter Display, All Segments Lit

ANSI Electric Meter v3.1 User’s Guide 13

Item Displayed Value

Format

All segments lit All Confirms proper operation of the display. Value ID code Any letter or number

x.x.x.x.

Value xxxxx.x.x.x Number value. Maximum of 8 numbers and

Present tariff period Forward active

energy

Reverse active energy

Import reactive energy

Export reactive energy

Control relay 1 open

Control relay 2 open

Indicator Function

Identification code for present displayed value. Maximum of 4 characters, letters or numbers.

decimal point of 3 possible places.

T1, T2, T3, T4

Indicates the present operating tariff period. Indicates that forward active energy is

flowing. This is also displayed if there is no present

active energy flow and the previous flow was in the forward direction.

Indicates that reverse active energy is flowing.

This is also displayed if there is no present active energy flow and the previous flow was in the reverse direction.

Indicates that import reactive energy is flowing.

This is also displayed if there is no present reactive energy flow and the previous flow was in the import direction.

Indicates that export reactive energy is flowing.

This is also displayed if there is no present reactive energy flow and the previous flow was in the export direction.

Indicates that control relay 1 is in the open position.

Not used.

Load disconnect open

Dollar value xxxxx.x.x.x

Euro value xxxxx.x.x.x

Correct 3-phase wiring

€

L1L2L3

This display indicator can be configured by the user to either reflect the current state of the load disconnect contactor, or to indicate whether or not load side voltage has been detected by the meter.

For more information on this, see “Display Indicator for Disconnect Position and Load Side Voltage” on page 1.

(Not used) Currency value of prepay credit remaining is displayed in Dollars.

(Not used) Currency value of prepay credit remaining is displayed in Euros.

Correct wiring configuration order for all 3 phases. (Does not detect reversed line and load wires or swapped line and neutral.)

14 Meter Operation

Item Displayed Value

Format

Reverse 3-phase wiring

Tamper switch open

PLC traffic detection

PLC received message occurrence and quality

Line 1 voltage Line 2 voltage Line 3 voltage Meter date dd:mm:20yy

Meter time hh:mm:ss

Reactive energy xxxxx.x.x.x

Active energy xxxxx.x.x.x

Reactive power xxxxx.x.x.x

Active power xxxxx.x.x.x

End of Interval

Indicator Function

L3L2L1

L1 L2 L3

DATE

TIME

kvarh

kWh

kvar

EOI

Indicates that 3-phase wiring is installed in the wrong order. (Does not detect reversed line and load wires or swapped line and neutral.)

Indicates that the main cover tamper switch is open. The cover is not installed or not installed correctly.

This icon is lit when PLC communication on the network has been detected by the meter. See “Power Line Carrier Communication” on page 1 for detailed information.

– No bars = no message received for this meter

– Smallest bar = a poor quality message – Both smallest and medium bar = a

medium quality message – All three bars = a high quality message

See “Power Line Carrier Communication” on page 1 for detailed information.

Indicates that voltage is present on line 1. Indicates that voltage is present on line 2. Indicates that voltage is present on line 3. Present local date in meter, or a self-read

record date, is displayed. Present local DST time in meter, or a self-

read record time, is displayed. Accumulated import or export reactive

energy is displayed. Accumulated kilowatt-hours of forward,

reverse, forward + reverse, or forward – reverse active energy is displayed.

Import or export reactive power is displayed.

Kilowatts of forward or reverse active power is displayed.

(Not used) Indicates that a demand reset has occurred and that a new demand interval has started.

ANSI Electric Meter v3.1 User’s Guide 15

Item Displayed Value

Format

Disconnect status

Nameplate message active

Load side voltage detected

Prepay enabled

Self-read/One-time read error

Access lockout override in effect

Negative number indicator

Test mode indicator

Tilt sensor indicator

Simulated mechanical wheel

Indicator Function

F0, F1, F2

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.

If it configured to indicate whether or not load side voltage has been detected by the meter, it will be illuminated when there is no load side voltage detected by the meter.

For more information on this, see “Display Indicator for Disconnect Position and Load Side Voltage” on page 1.

Indicates the nameplate messages that are presently active in the meter. See additional description following this table.

Depending on your meter’s configuration, this icon may be used to

indicate whether or not load side voltage has been detected by the meter.

For more information on this, see “Display Indicator for Disconnect Position and Load Side Voltage” on page 1.

(-)

TEST

TILT

Prepay is enabled in the meter.

Indicates that the current Self-read or One-time-read record that is being displayed has errors that may affect register accuracy.

The access lockout settings are deactivated by hardware screw.

The number displayed is negative

The meter is in test mode. This icon turns on when the meter enters test mode, and turns off when it exits test mode.

The meter includes a sensor that will detect when the meter has been tilted. This icon indicates that the sensor has detected a tilt condition.

The simulated mechanical wheel will scroll through each of the six indicators at a rate that indicates the amount of energy consumed/produced as well as the direction of energy flow.

16 Meter Operation

Item Displayed Value

Format

ANSI meter form indicator

Name plate message

MEP communication indicators

Indicator Function

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.

Error and Caution Display Messages

Various error and caution message codes can be shown on the display. A diagnostic event can be configured by the user to be shown as either an error or caution message, or can be set to not appear on the display. The action of each type is:

 Caution message codes are shown at the end of the regular scroll list, when a

caution is present. Scrolling continues for all display items.

 Error message codes override all regular display items and only the error

message codes are displayed. Scrolling stops for regular display items when an error is displayed.

Once an error or caution occurs, the display continues to show the error or caution code until it is cleared. The codes persist across power outages and continue to display after the meter is powered down and back up. The error or caution codes are read and cleared by NES System Software via PLC communication with the Data Concentrator, or directly with the Provisioning Tool via the meter optical port.

All error and caution message codes can be read by the Data Concentrator and sent to NES System Software, even when not selected to appear on the display.

If more than one error or caution is active, the displayed characters are a combination of the error or caution values. See “Self Tests and Diagnostic Messages” on page 1 for a list of the diagnostic messages and an explanation of display codes.

Display Value ID Code

The display value ID code is the user configurable 1 to 4 character alpha/numeric identifying code for the value currently shown in the 8-digit value field of the meter display. Different codes are used for power values and error and caution diagnostic values. See the NES Provisioning Tool User’s Guide for more information on creating value ID codes. Figure 3.2 shows the 4-character display value ID location.

4-character value ID code.

Figure 3.2: Display, 4-Character Value ID Code

ANSI Electric Meter v3.1 User’s Guide 17

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.

Low Voltage Display

During a brownout condition, the meter display will show VOLT LO. This will continue to be displayed until the meter is powered back up, or until it is completely powered off. The meter display will also briefly show VOLT LO when the meter is powered down normally, although the message will not persist in this case.

Display Value Items

The meter can display up to 30 numeric value items, which are chosen from the available total and tariff energy measurements, as well as time, date, and prepay energy credit remaining. The display scrolls through each item, with a programmable scroll-time for each item of 6 to 15 seconds. The scroll-time is the time that the value is shown on the display before scrolling to the next item. Each item has a unique programmable 4-character ID code that is displayed along with the value item.

You can use the meter push button to automatically advance to the next display value item, before the scroll-time expires. Alternatively, you can disable automatic scrolling, so that the push button must be used to advance the meter display to the next item at all times. For more information on the meter push button, see “Push Button Operation” on page 1.

The decimal point location for energy values is configurable, with an available range of 1 to 8 digits to the left and 0 to 3 digits to the right of the decimal point. The display of leading zeros can also be suppressed. The decimal point location and zero suppression apply only to register values and prepay totals. Other display items, such as date, time, firmware version, TOU calendar ID, and diagnostic codes are not affected by the decimal point location and zero suppression settings.

When an actual value is larger than the number of digits configured to the left of the decimal point, the most significant digits are not displayed. This allows the most frequently changing digits to display. The actual stored values are not affected.

The following are the choices of items that are available to be shown on the meter display. The summation and self-read items can be per-tariff or a total of all 4 tariffs, except for the power outage values, the error counter, which show only totals.

Value Type Item Description

Summation / accumulators Forward active kWh L1+L2+L3 Summation / accumulators Reverse active kWh L1+L2+L3 Summation / accumulators Forward + reverse active kWh L1+L2+L3 Summation / accumulators Forward – reverse active kWh L1+L2+L3

18 Meter Operation

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 Error,

Cover Removed, and Save-All Aborted. Present / instantaneous Forward active kW L1+L2+L3 Present / instantaneous Reverse active kW L1+L2+L3 Present / instantaneous Import reactive kvar L1+L2+L3 Present / instantaneous Export reactive kvar L1+L2+L3 Present / instantaneous RMS current L1 Present / instantaneous RMS current L2 Present / instantaneous RMS current L3 Present / instantaneous RMS voltage L1 Present / instantaneous RMS voltage L2 Present / instantaneous RMS voltage L3 Present / instantaneous Power factor L1 Present / instantaneous Power factor L2 Present / instantaneous Power factor L3 Present / instantaneous VA power L1+L2+L3 Present / instantaneous Frequency Present / instantaneous Sine of phase angle L1 (angle between voltage and current on L1) Present / instantaneous Sine of phase angle L2 (angle between voltage and current on L2) Present / instantaneous Sine of phase angle L3 (angle between voltage and current on L3) Demand Date/time Demand Previous demand value Demand Present demand value Demand Cumulative demand value Demand Continuous cumulative demand value Demand Maximum demand value Note: The demand values listed above are available to be displayed for any of the 8 configurable demand

sources. The 8 demand sources are forward power, reverse power, forward + reverse power, and forward

- reverse active power, as well as for reactive power for all 4 quadrants. Self-read/One-time-read/

Historical demand reset Self-read/One-time-read/

Historical demand reset

Forward active kWh L1+L2+L3

Reverse active kWh L1+L2+L3

Forward + reverse active kWh L1+L2+L3

ANSI Electric Meter v3.1 User’s Guide 19

Value Type Item Description

Self-read/One-time-read/ Historical demand reset

Self-read/Historical demand reset date and time

Note: Self-read and One-time-read values can be configured to display from any of the 24 Self-read or One-time-read data sets stored in the meter, and for 12 of the historical demand reset data stored in the meter.

Date Local DST (Daylight Saving Time) date in meter Time Local DST (Daylight Saving Time) time in meter Pre-pay, total Prepay credit remaining, in Wh Pre-pay, emergency Prepay emergency credit remaining, in Wh TOU calendar ID Identifier of the Time-of-Use calendar that is presently operating Firmware version Firmware version currently running in the meter. You can configure the

Disconnect Open The meter can be configured to display the reason the load disconnect

Demand Resets The number of demand resets that have occurred. Load Side Voltage

Detected

Forward – reverse active kWh L1+L2+L3

Import reactive kvarh L1+L2+L3

Export reactive kvarh L1+L2+L3

Power outage duration seconds (accumulation of all outages since last

reset)

Power outage count (number of outages since count was last reset to 0)

Error Counter – A count of the number of alarms that have occurred for RAM

Failure, Non-Volatile Memory Failure, Clock Error, Measurement Error,

Cover Removed, and Save-All Aborted.

Date and time that a self-read occurred

meter to display its firmware version for 1-15 seconds on power-up, if

desired.

When the firmware version is shown on the meter display, the alphabet

character portion is shown as a numeric value. The letter “a” is shown as

01, “b” as 02, “c” as 03, and so on through the alphabet. For example,

firmware version 1.00a is shown on the meter display as 01 00 01.

contactor has been opened as a user-specified text string. The follo wing characters are not supported: K, M, Q, V, W, X.

Note that the digit “2” is used to represent the letter “Z,” the digit “1” is used to represent the letter “I” and the digit “5” is used to represent the letter “S.”

The meter can be configured to automatically reject remote closing of the load disconnect contactor when load side voltage is present, and to display the reason for this as a user-specified text string. The same character restrictions as described for the Disconnect Open display item above apply.

For more information on this feature, see “Remote Disconnect” on page 1.

Push Button Operation

The push button on the front of the meter (next to the display and labeled LCD), performs various functions. The button functions are:

20 Meter Operation

 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.

 Prepay Credit Alarm Silencing: When the audible prepay credit alarm is

activated (due to a low or exhausted prepay credit level) the button can be pushed for any length of time to silence the alarm.

 Push Button Hold Time: When the button is pushed and held down for

longer than 3 seconds, the display changes to show the number of seconds that the button has been held, and the ID code changes to “PTIM.” This allows you to track how long the button has been held in order to activate a desired function.

Self Tests and Diagnostic Messages

The meter performs a comprehensive self-test at power-up and periodically performs additional diagnostics and self-tests, with messages created to indicate the occurrence of alarm or error conditions. Some self-tests are performed every second, minute, hour, daily, or weekly, and some self-tests are performed on power-up only.

Detected faults can be read by the Data Concentrator and transmitted to NES System Software, and can also be read directly from the meter via the optical port using the Provisioning Tool. Diagnostic or alarm flags are set for the specific condition and must be cleared either via the optical port (using the Provisioning Tool) or by NES System Software through the Data Concentrator. You can configure the meter to show selected message codes on the display as cautions or errors.

Understanding Display Diagnostic Codes

The diagnostic codes are hexadecimal values, which will allow all possible diagnostic events to be shown on the display simultaneously. If more than one error or caution is occurring, the displayed characters are a combination of the error or caution values.

Diagnostic Event Descriptions

The following table lists the diagnostic events that can generate error or caution messages. The Display Code column shows the value for each event, and is the value shown on the meter display when only one event in each digit position is being reported. When more than one event is being reported for the same digit position, the displayed value is the sum of the event codes. Message codes are displayed on 2 screens, with scrolling between them occurring at the standard scroll time set for the normal display sequence.

Error or Caution Item

Display Code

Description Self-Test

Schedule

Screen 1

Configuration Error 00000002 PLC communications IC initialization failed At power-up System Reset 00000004 Watch-dog reset or event buffer overflow occurred. May

ANSI Electric Meter v3.1 User’s Guide 21

Display Code Digit Position 8

be due to momentary voltage interruption.

Upon occurrence

Error or Caution Item

RAM Failure 00000008 Memory corruption occurred. Upon

ROM Failure 00000010 Invalid CRC in Bootrom Non-Volatile

Memory Failure Clock Error 00000040 Loss of clock memory data or clock functions have been

Measurement Error 00000080 Metering error occurred. Once per

Low Battery 00000100 Real Time Clock backup battery is below 2.5V. Daily Power Failure 00000800 Power failure occurred since this flag was last cleared.

Display Code

Display Code Digit Position 7

00000020 CRC verification failed. Memor y may have been

Display Code Digit Position 6

Display Code Digit Position 5

Description Self-Test

corrupted.

suspended due to meter having been without AC power for an extended period of time.

Detected upon occurrence at time of power-down.

Schedule

occurrence

At power-up

second

Upon occurrence

Cover Removed 00001000 The meter main cover has been removed. Considered a

tamper event.

Reverse Energy 00002000 Meter has registered reverse power for 10 consecutive

seconds. Considered a possible tamper event.

Data Backup Incomplete

Disconnect Switch Error

Load Profile Overflow

Self-Read Occurred 02000000 New self-read has be en recorded. Diagnostic event

Load Disconnect Open

00004000 A data backup procedure did not complete. At power-up

00008000 Disconnect open/closed state may be incorrect.

Note: This flag is also set when the voltage isolation link is removed for accuracy testing.

Display Code Digit Position 2

01000000 Load profile memory overflow occurred; unread records

have been overwritten.

coincides with self-read schedule.

04000000 Disconnect switch has been o pened (turned off) by meter

internal command.

Once per second

Upon occurrence

Every loadprofile interval

At self-read

Upon occurrence and every hou while off command is active

22 Meter Operation

Error or Caution Item

Control Relay Open 08000000 Control relay is in open state. Upon

Phase Loss 10000000 Phase loss detected. By default, this indicates that voltage

Phase Inversion 20000000 Phase inversion detected. Neutral and one phase have

PLC Config Failure 40000000 Error reading PLC configuration data. Data may be

General Error 80000000 Power-down process error and/or display read-back failed. Upon

Display Code

Display Code Digit Position 1

Display Code Digit Position 8

Description Self-Test

below 61% of rated voltage has been detected on at least one phase. However, the percentage that constitutes a phase loss is user-configurable. Considered a possible tamper event.

been swapped. Considered a possible tamper event.

corrupted.

Screen 2

Schedule

occurrence and every hour while relay is open

Upon occurrence

At power-up

occurrence

Invalid Password 00000001 An invalid password was entered during optical

communications.

Remote Communications Inactive

Current on Missing or Unused Phase

Reserved 00000008 N/A N/A

Reserved 00000010 N/A N/A Software CRC Error 00000020 Image ID or CRC error during boot-up procedure. Upon

Code Bank Changed

Load Profile Backfill Failed

MEP Installed or Removed

00000002 Remote communications (PLC) inactiv e for the last 24

hours, by default. The duration required to trigger this alarm is now user-configurable.

00000004 Current flow greater than 2A detected on a phase with low

or no voltage. This usually indicates that a Potential Test Link is open. Considered a possible tamper event.

Display Code Digit Position 7

00000040 Active (executing) code bank has been ch anged. Upon

00000080 Load profile was not backfilled at power-up because meter

was off across midnight.

Display Code Digit Position 6

00000100 Indicates that a MEP (Multipurpose Expansion Port)

module has been field installed or removed from the electric meter.

Upon occurrence

Daily

Upon occurrence

occurrence

occurrence Upon

occurrence

Upon occurrence

ANSI Electric Meter v3.1 User’s Guide 23

+ 67 hidden pages