ITRON EM512 TYPE 700 JV1 Manuale utente

EM512 Type700 JV1

Technical and user guide

 
 2 
 Table of Content 
 
Table of Content.......................................................................................................................................2 
Introduction to Prepayment ....................................................................................................................3 
Standard Transfer Specification (STS) ......................................................................................................4 
Purchasing a token...................................................................................................................................6 
User Training ............................................................................................................................................7 
Understanding the front panel of the meter ...........................................................................................8 
Annunciations ..........................................................................................................................................9 
Meter programmable features ..............................................................................................................10 
Anti-Tamper features.............................................................................................................................11 
Tampering Mode....................................................................................................................................12 
Entering a Token ....................................................................................................................................13 
Meter displays........................................................................................................................................14 
CLEANING THE METER ...........................................................................................................................20 
Meter support training...........................................................................................................................21 
Installation..............................................................................................................................................22 
Short Codes and Descriptions ................................................................................................................24 
Technical Specifications .........................................................................................................................25 

Introduction to Prepayment

Prepayment electricity meters enable supply authorities to collect revenue from consumers more efficiently.

Consumers are obliged to pay for their electricity prior to actual consumption.

This means that if a prepayment meter is installed in the house, the meter would monitor electricity

consumption and compare that to the available credit purchased by the consumer. If the consumer would

exceed this credit limit, the power will be disconnected.

Credit can be added by entering a valid credit token. The credit token must be purchased from the supply

authority or an approved vendor. When a consumer buys electricity from a vendor, the consumer will receive

a receipt with a 20-digit code/token. This token must be entered into the meter in order to credit the

equivalent kWh on the meter.

For Example: A consumer goes to the local grocery store (vendor) to buy electricity. The consumer will

supply the vendor with a meter ID card (or meter serial number) and the amount that he/she wishes to

purchase. The vendor will in return supply the consumer with a receipt with a 20-digit token printed on it.

The consumer will enter this token into his/her meter in the house, and the equivalent amount in kWh will be

credited to the meter. The display of the meter will indicate the amount of credit available in kWh.

1kWh = burning of 100W globe for 10 hours

Vendors from different areas make use of different rates or tariff indexes. This means that each area has a

specific rate at which electricity is charged.

All tokens are meter serial number specific, which means that a token can only be used on one specific

meter. If a consumer buys electricity from a vendor and would for some reason lose the token, no one would

be able to use the token (on a different meter) unless it is entered into the initial buyer’s meter.

Vending systems STS Token

Prepayment meters make use of the Standard Transfer Specification or STS protocol to vend tokens to

meters. This means that any vending authority can vend tokens to a STS compatible prepaid meter. Read

more on STS in the following section.

Standard Transfer Specification (STS)

STS is a standardized protocol that enables different vending systems to vend tokens to any STS compatible

prepayment meter.

STS meters

STS Tokens

Vending systems

Itron - Vending system

Vending system A

Vending system B

Tokens generated using this algorithm can only be used once and must be supplied by an approved

authority. Tokens are meter and area specific, which means that a token can only used on one specific meter

and not on any other. Tokens that are lost or stolen can only be entered into the meter that the token was

generated for. This makes the STS prepayment protocol a very safe and controlled environment.

STS allows the use of equipment from different suppliers. It is a secure procedure that prevents the following:

Duplicate generation of tokens through legitimate vending devices

Fraudulent generation of tokens through stolen vending devices

Duplicate generation of tokens through legitimate vending devices outside the supply authority’s

area

Fraudulent use of previously used tokens

Tampering with legitimate tokens (i.e. changing information)

Token security

There are two different types of dispenser tokens used in the STS protocol. These types are: Dispenser

specific tokens and non-specific tokens.

Dispenser specific token

Can only be generated by a vending device, which is authorized to vend to the intended meter range.

This means that tokens:

Can only be accepted by the meter, which it is intended for.

Cannot be modified after the tokens have been issued to the user.

Token for Meter #123

Itron - vending

system

Meter #

123 Meter #

456

Non-specific Token

These tokens are special tokens that are vended from vending authorities and have the following

characteristics:

Can be generated by any vending device, which is authorized to vend credits

Can be accepted by any STS meter

Can be used repeatedly on any STS meter.

Please see the STS User Guide for more information concerning the STS protocol.

Non-specificToken

Itron - vending

system

Meter #

123 Meter #

456

These tokens are mainly used to perform maintenance checks on meters. Examples are: ’Display Tariff

Index’ token and ‘Test display token’.

Purchasing a token

The vending of prepayment electricity tokens is a one-way system in which tokens cannot be refunded upon

returned. This is because once a token has been issued, the only way that the supply authority could verify if

the token has been entered into the meter is to physically check the meter registry on the meter.

The user purchases credit tokens from a vending authority using the supplied user I.D card and the amount

the user wishes to purchase.

The 20-digit token is generated combining various elements such as the meter serial number, supply group

code and the date on which the token was vended.

When the user I.D card is not available or supplied, it is still possible to purchase electricity supplying the

vending authority with one of the following:

Meter serial number

Stand or property number

Name of property owner

Physical address

The receipt will look similar to the one below:

When the users purchases a token from the vending authority a receipt is handed to the user displaying the

following information

Receipt number

Date

Time of transaction

Monetary value of the transaction

Kilowatt-hour (units) received

20-digit token

Name of consumer

Address

Tariff type

Tariff index

Meter serial number

User Training

Product Introduction

The EM512 Type 700 JV1 (Prepayment meter Double sensor) meter was developed to expand the product

portfolio of high quality Prepayment Products manufactured by Itron.

The products are designed to be compatible with the standardized prepayment protocol, STS (Standard

Transfer Specification).

Understanding the front panel of the meter

EM512 Type 700 JV1 Front Panel

Display LCD

Visually displays the credit remaining on the meter on LCD segments.

Pulse Imp/kWh

Indicates the rate at which energy is consumed. 1000 flashes = 1kWh

Meter serial number

Unique number assigned to the meter. This number is used when electricity tokens are vended for a meter.

The serial number contains 11 digits, Example = 32 XXXX XXXX X

Tamper Indicator LED

Indicates the tamper during tamper occurred and latching until the meter get clear the tamper.

When the meter get tamper, the LCD will display

Credit indicator

Indicates the number of credits meters. When the credit meters above the low credit threshold, LED become

green color and when the credit below the low credit threshold, LED become red and blinking, the buzzer will

be sound. To stop the buzzer sound by press any keys.

Optical probe

For reading the data from the meters

EM512 Type 700 JV1

Display LCD

Unique Meter Serial Number

BACKSPACE Key

Terminal Cover (Sealed)

Tamper Status LED

Credits Indicator LED

Optical probe for RDO

ENTER Key

Pulse Imp/kWh

Annunciations

Annunciation icons are described below.

Icons

Descriptions

Indicate the power consumption of the users.

The Bar graphic base on Power limit of meter, each bar equal to 20% of power limit.

Reverse current Indicator

Tamper Indicator

The Icon will appear when display show remain credits and Total cumulative kWh

Contactor open Indicator

Number of digits token was input

Meter programmable features

The EM512 TYPE 700 JV1 product is equipped with programmable features, which can be customized to

each customer’s specific needs.

Audible Low Credit Warning and Credits Indicator LED

When the credit available on the meter reaches the low credit threshold, the meter will signal this by change

the color of Credits Indicator LED from Green to Red (Blinking).

The value at which the Low Credit Threshold would enable can be set with a token. This feature can be done

onsite with a token supplied to the user. This token can work on any meter.

The Audible Low Credit Warning is a programmable feature, which will warn the user of a low credit level by

making an audible beep sound, the beep of sound more louder when the credit near to zero.

This is in addition to change the color of LED credit. This feature cannot be changed with a token.

User Programmable Features

The programming or setting of these features can be done by the user in the field

Low Credit Threshold

The Low Credit Threshold can be setting by using short code 456XX, where the XX is energy in kWh

(minimum 05 kWh)

Example:

The low credit = 20 kWh

Programmable interval Buzzer time

When the credit reaches the limit value is low, LED indication green turns to red flashes and buzzer

sounds, the sound can be stopped by pressing any key on the keypad.

If in XXX minutes later, no credit token is entered, the buzzer sounds again. The lower the credit

token so the faster the duration of sound.

The XXX minutes at the sound of buzzer can be adjusted by using short code 123XXX, where the

XXX is the time in minutes

Example:

The interval Buzzer time = 10 minutes



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