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CENTRON® Meter Technical Reference Guide 

 

 

Proprietary Rights Notice 

This manual contains the trade secrets and confidential information of Itron, Inc., which are not to be divulged to 
third parties and may not be reproduced or transmitted in whole or part, in any form or by any means, electronic or 
mechanical for any purpose, without the express written permission of Itron, Inc.  All rights to designs or inventions 
disclosed herein, including the right to manufacture, are reserved to Itron, Inc. 

The information contained in this document is subject to change without notice. Itron, Inc. reserves the right to 
change the product specifications at any time without incurring any obligations. 

 

Trademarks Used in This Manual 

CENTRON and PC-PRO+ are registered trademarks of Itron, Inc. 

Windows is a trademark of Microsoft Corporation. 

Cellnet is a registered trademark of Cellnet Technologies, Inc. 

 

 

 

 

 

 

 

 

 

 

 

CENTRON® Meter Technical Reference Guide 

100299GM-02

 

Itron, Inc.  
Corporate Headquarters 
2111 North Molter Road 
Liberty Lake  WA,  99019 
U.S.A. 
Tel: (866) 374-8766 
Fax: (509) 891-3355 

Itron, Inc. 

Oconee Electricity Metering 

313-B North Highway 11 

West Union, SC 29696 

U.S.A. 

Tel: (864) 638-8300 

Fax: (864) 638-4950 

www.itron.com 

Copyright© 2004-2006 

Itron, Inc. 

All rights reserved. 

 

 

Содержание Centron

Страница 1: ...CENTRON Meter Technical Reference Guide Effective Date October 2006...

Страница 2: ...this document is subject to change without notice Itron Inc reserves the right to change the product specifications at any time without incurring any obligations Trademarks Used in This Manual CENTRO...

Страница 3: ...CE RECEIVED INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION FCC Part 15 Subpart C When equipped with a radio transmitter option this equipment has been tested and found to comply with the li...

Страница 4: ...warranty All surface mounted parts must be replaced by the factory Repair of Meters Under Warranty If the meter is under warranty then Itron Inc will repair the meter at no charge if the meter has fa...

Страница 5: ...General Information 1 About This Manual 1 General Description 2 Physical Description 3 Meter Base 3 Personality Modules 4 Product Availability 5 Battery 5 Covers 6 Display Functions 6 Specifications...

Страница 6: ...Description C1SR 28 C1SR Display 29 C1SR Electronic Detent 30 Net Metering 30 Resetting Values C1SR 31 Transmission 31 FCC Regulations 31 Testing the RF Message 31 Tamper Detection 32 Testing the C1S...

Страница 7: ...e Peaks 52 Demand Reset 52 Cold Load Pickup 53 TOU Load Profile Meters 53 Self Reading and SnapShot Registers 53 Time of Use 54 TOU Schedules 54 Calendar Schedule 55 Registers 56 TOU Operation 56 Load...

Страница 8: ...C12 19 C1SD T L 72 Non Fatal Errors 74 Inspecting and Troubleshooting General 76 Blank Display 76 Time and Date Wrong TOU Version 76 No Accumulation of kWh or kW 76 Software Cannot Communicate with Mo...

Страница 9: ...C12 19 D T L Register 22 Figure 18 ZRO C2A Resetter Connected to the CENTRON 23 Figure 19 Reverse Side of ZRO C2A Resetter 24 Figure 20 LCD 24 Figure 21 Non Detented Register 25 Figure 22 Delivered kW...

Страница 10: ...Table of Figures x CENTRON Meter Technical Reference Guide Notes...

Страница 11: ...se manuals The Adobe Reader can be downloaded freely from http www adobe com About This Manual This manual contains the following information as listed in the chapter descriptions below Chapter Title...

Страница 12: ...for measuring electrical energy consumption The CENTRON incorporates a two piece design combining a base metrology with a variety of personality modules that snap on the standard meter base Utilizing...

Страница 13: ...figurations of polycarbonate and glass Meter Base The CENTRON meter base contains all of the measurement circuitry and calibration information on the metrology board The meter base assembly includes t...

Страница 14: ...CENTRON 240 Volt Metrology Figure 4 CENTRON 20 Amp Metrology Personality Modules All of the personality modules in the CENTRON meter family snap into the module holder located on the standard meter b...

Страница 15: ...orm 25S Personality Modules C1S LCD 5x1 or 4x10 C1SR R300C Radio Frequency C1SC Cellnet Data System C1SD Demand C1ST Time of Use TOU C1SL Load Profile C1S_R2 R3 R300CD CD3 where _ D T or L Battery The...

Страница 16: ...C1SD C1ST and C1SL modules can display a maximum of 80 display items for the Normal Alternate and Test modes Specifications The following sections describe the CENTRON meter specifications Electrical...

Страница 17: ...10 2 4S 240 0 65 10 2 12S 25S 120 0 65 5 4 240V Register LCD R300 R300 HP Cellnet C12 19 D T L R300CD CD3 Watt Loss 0 01 0 45 1 35 0 90 1 67 1 67 VA 7 16 7 29 14 76 21 76 21 57 120V Register LCD R300...

Страница 18: ...can National Standard Utility Industry End Device Data Tables ANSI C12 20 2002 American National Standard for Electricity Meters 0 2 and 0 5 Accuracy Classes ANSI IEEE C62 45 1992 Guide to Surge Testi...

Страница 19: ...ents are shown in inches and centimeters Polycarbonate A B C D E F G H 6 95 17 70 6 29 16 00 2 70 6 90 3 16 8 00 4 53 11 50 4 98 12 70 6 29 16 00 6 95 17 70 Shipping Weights The following weight measu...

Страница 20: ...General Information 10 CENTRON Meter Technical Reference Guide Notes...

Страница 21: ...nd C1SL timekeeping modules contain a battery that powers the clock circuit during a power outage The battery is permanently soldered to the module and is expected to last the life of the module The p...

Страница 22: ...r version with Crystal Time synchronization if a clock is needed TOU or Load Profile Installing the Meter into Service Install the meter base using standard meter installation practices The current an...

Страница 23: ...ocation The metering service should match the class form and voltage rating on the meter s nameplate Failure to follow these recommendations will result in damage to the CENTRON Form 12S 25S meter and...

Страница 24: ...r in the figure below between the circuit board and the metrology board by pulling it by its middle while moving it side to side To maintain the integrity of the connector only remove it when you are...

Страница 25: ...d and pressing gently at the bottom of connector to mate the connector to metrology board Then gently press the top of the connector to mate it to the register module The connector is seated correctly...

Страница 26: ...four meter base tabs are engaged with the slots at the top and bottom of the inner cover 10 Place the cover over the meter base until the flange on the cover is flush with the flange on the meter base...

Страница 27: ...ib is the biasing current derived from the line voltage B is the magnetic field density derived from the line current K is the Hall coefficient analogous to a gain factor in any meter K could be viewe...

Страница 28: ...multiplication has already taken place see the Simplified CENTRON Architecture figure below The Hall sensor output voltage is amplified by a differential amplifier in order to bring the signal within...

Страница 29: ...ponents described above passes the Wh pulse energy direction and 60Hz clock signals to the personality module attached to the meter base The two line voltages one is referred to as meter ground and po...

Страница 30: ...rated signal exceeds a predetermined amount of energy a pulse is generated The pulse stream is accumulated into a counter When the accumulated pulses reach a threshold a Wh pulse is emitted and the me...

Страница 31: ...available with an LCD personality module to register energy accumulation Figure 16 C1S LCD Personality Module The LCD module may be ordered with a 5x1 or 4x10 register for self contained meters and a...

Страница 32: ...ting the energy register This is done using the ZRO C2A Resetter Figure 17 Mounted C12 19 D T L Register Registers Kilowatt Hours The modules display energy in increments of whole values of kWh Standa...

Страница 33: ...ed at the 12 o clock position on the meter Extending from the ZRO C2A is a cable terminating in a connector which mates to the programming connector of the CENTRON Beginning February 20 2002 the C1SR...

Страница 34: ...play Function This display uses five 7 segment digits four icons to indicate the type of displayed data and three icons to represent a watt disk emulator The display may be configured for either four...

Страница 35: ...r The Detented Register addresses applications requiring the reading of delivered kWh only Received energy is discarded Figure 22 Delivered kWh with Detent Enabled Net Register The Net kWh Register ad...

Страница 36: ...e segment check mode based on the factory programming option Option Description 1 7 second billing register display 1 second blank 7 second segment check display 7 7 2 7 second billing register displa...

Страница 37: ...ersonality Module 33 The Itron CENTRON C1SR is a one way unlicensed radio frequency RF personality module that attaches to the CENTRON meter base See the figure below It offers a cost effective soluti...

Страница 38: ...rmat Interval Data Message IDM The ERT type 7 message transmits one SCM and one IDM type 23 message The type 23 ERT indicates the transmission of a single IDM message in the XXXXX XX format The RF Per...

Страница 39: ...he operating temperature range Figure 26 C1SR LCD This module can be configured to display either four or five digits of energy consumption and will rollover at 100 000 kWh for both self contained For...

Страница 40: ...is displayed 7 0 C1SR Electronic Detent The C1SR module displays energy in increments of whole values of kWh Standard operation for this module is to accumulate both forward and reverse energy flow i...

Страница 41: ...rt C Paragraph 247 Intentional Radiator Changes or modifications not expressly approved by Itron could void the users authority to operate the equipment Testing the RF Message In order to confirm the...

Страница 42: ...ounter the meter must sense a shaken condition associated with a power outage 1 Place the meter in a socket 2 Apply power to the meter 3 Remove the meter from the live socket 4 Replace the meter in th...

Страница 43: ...R300 is a one way radio frequency personality module that transmits within the unlicensed 910 920 MHz frequency band governed by the US Code of Federal Regulations CFR Title 47 Part 15 Radio Frequency...

Страница 44: ...ing the FCC ID on the module itself as shown in the figure below Figure 27 C1SR FCC Label Location Changes or modifications not expressly approved by Itron could void the user s authority to operate t...

Страница 45: ...outage notification reverse power flow detection power restoration notification and redundant transmissions The C1SC uses spread spectrum to broadcast its message in the 902 to 928 MHz frequency rang...

Страница 46: ...ttom of the meter The change out labels are identical and contain the AEP barcode information and a utility descriptor Transmission Scheme The RF transmission is spread spectrum using Binary Phase Shi...

Страница 47: ...1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 0 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 0 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 0 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1...

Страница 48: ...splay 1 second blank 7 second segment check display 7 7 2 7 second billing register display 1 second blank 1 second segment check display 7 1 3 Only the billing register is displayed 7 0 Resetting Val...

Страница 49: ...Operation C1SC Version CENTRON Meter Technical Reference Guide 39 Figure 31 C1SC CN1SC Programming Port Location...

Страница 50: ...Operation C1SC Version 40 CENTRON Meter Technical Reference Guide Notes...

Страница 51: ...terchangeable personality modules that snap into the standard CENTRON metrology base The three multifunction modules available include the following versions C1SD a Demand module C1ST a Time of Use TO...

Страница 52: ...RAM for up to eight channels of load profile interval data Expansion Capability An expansion port is available for future functionality except non RF versions Bidirectional Metering All three multifun...

Страница 53: ...Indicators All controls and indicators are shown below For detailed instructions about a feature or control refer to the appropriate subsection Figure 33 Controls and Indicators Liquid Crystal Displa...

Страница 54: ...entification Valid entries are A Z a z and 0 through 9 The meter will continue to operate in Normal mode until power is disconnected the Alternate display sequence is initiated Test mode is selected o...

Страница 55: ...TEST button The LCD will display nordiSP normal display signifying the exit of Test Mode and entry into Normal Mode operation Test Mode Timeout If left in Test Mode the meter will automatically exit...

Страница 56: ...tive scrolls left for negative 120 240 277 480 Nominal Voltage Indicator not applicable in CENTRON C12 19 meters are present during segment check Scr Loc Scroll Lock indicates temporary scroll lock of...

Страница 57: ...g with any desired annunciators or Identification ID code numbers are selected during the programming process Detailed information on these display items can be found in the PC PRO Advanced documentat...

Страница 58: ...Last Test Date Last Test Time X X Load Profile Pulse Weight 1 8 X X Load Research ID X X Last Season Self Read Registers X X Meter ID Meter ID 2 X X Minutes on Battery X X Number of Subintervals X X N...

Страница 59: ...han the value in the corresponding peak demand register the maximum demand value remains unchanged This update process is carried out when a demand interval is completed when a power outage occurs whe...

Страница 60: ...litting whereby it is possible for an electricity consumer to manipulate the load for limited periods within the demand interval The registered demand reading will be less than the actual maximum dema...

Страница 61: ...aximum demand is reached continuous cumulative demand will also be adjusted to reflect this new maximum demand value A demand reset will clear the maximum demand value but will not affect the continuo...

Страница 62: ...Coincident peak demand is the energy demand by that group during periods of peak system demand A customer s coincident peak demand is usually calculated from meter readings taken at the time when the...

Страница 63: ...storation before resuming demand calculations TOU Load Profile Meters All meters with timekeeping functionality have a battery installed The battery allows the TOU and Load Profile data in RAM to be m...

Страница 64: ...can be performed after this self read Read on a programmable number of days since the last manual or automatic demand reset meters with timekeeping functionality only If the selected number of days 1...

Страница 65: ...mented as per the TOU schedule and available in each rate period in addition to the Total rate Daily Patterns Each pattern defines the times during the day that rate period A B C or D begins and ends...

Страница 66: ...he meter display Several TOU indicators are available on the liquid crystal display LCD Rate Annunciators and Active Rate Indicators Rate annunciators are available with each demand and energy registe...

Страница 67: ...d profile recording is programmable from 1 to 144 Kbytes in one Kbyte increments Bit Resolution The mass memory is configured for 16 bit data resolution Equivalent pulse count resolution per interval...

Страница 68: ...to 1 8 watthours per pulse Some example pulse weight calculations Example 1 Calculation of Pulse Weight If the customer pulls a 240V CL200 singlephase Form 2S electromechanical meter from service wit...

Страница 69: ...1 Partial Interval The status bit is set for a partial interval due to a time adjust power outage or beginning interval 2 Long Interval The status bit is set for a long interval due to a time adjust...

Страница 70: ...2 18 25 31 37 62 75 93 125 187 375 8 5 11 16 22 27 33 55 66 83 111 166 333 Optional Features Event Log The C12 19 C1SD T L register has an Event Log that records historical events that have taken plac...

Страница 71: ...option board logged on successfully to the meter Low Battery Non Fatal Error Codes for description Meter Reprogrammed meter was initialized or reconfigured Power Outage power was lost Power Restored p...

Страница 72: ...meter firmware on your computer to make it available to PC PRO Advanced You can obtain firmware upgrades through your Itron Inc Sales Representative You can install only one version of CENTRON meter...

Страница 73: ...set Prior to meter installation the clock must be set to activate time keeping functionality and features When the meter is powered from the beginning of life the available battery capacity is 15 year...

Страница 74: ...smission frequencies the frequency hopping pattern and the time interval between transmission cycles are random in nature thus providing a method for avoiding interference with transmission from other...

Страница 75: ...Indicator 2 Demand Reset Push Button N A SCM 2 Indicator 1 SCM 2 Indicator 1 Low Battery N A SCM 2 Indicator 2 SCM 2 Indicator 2 End of Billing Schedule 1 year from end N A SCM 2 Indicator 2 SCM 2 Ind...

Страница 76: ...registers to be transmitted Select the number of digits for the data to be transmitted as well as the number of decimal place digits for the data Select the one of three date formats to be transmitte...

Страница 77: ...eral 76 Inspecting and Troubleshooting C1S LCD and C1SR 78 This section provides information and instructions to help you test and maintain the CENTRON meter Topics covered include Testing support fea...

Страница 78: ...n Pulse Detector An optional pulse detector is available for the CENTRON meter The pulse detector has an infrared pickup with two visible LEDs When positioned over the CENTRON light pipe as shown in t...

Страница 79: ...nd C1SR are equipped with LCD displays that utilize a three square segment annunciator to show the direction of energy flow The annunciator represents 1 0 watthour each time it turns on and 1 0 wattho...

Страница 80: ...C1ST and C1SL Testing with the Infrared Test LED The CENTRON meter is equipped with an Infrared Test LED Light Emitting Diode which is located on the top of the meter at the 12 o clock position The pu...

Страница 81: ...calls for said light load test to follow immediately after the full load test The problem is caused by improper jogging and can be avoided by sequencing the test in order of applied power such that th...

Страница 82: ...r standard Troubleshooting Fatal Errors The CENTRON meter will check for fatal errors when a meter reconfigure is performed when power is initially energized and upon future power restoration while pe...

Страница 83: ...is problem return the meter for repair FAt Error3 DATA FLASH Error The meter has detected a problem with the data flash non volatile memory If this error occurs Factory Reset the meter reprogram the m...

Страница 84: ...transmission can be controlled via PC PRO Advanced software Non Fatal Errors Error Code Error Possible Cause s Error Description Err 1 Low Battery Error Battery Voltage Low Battery Not Connected Prop...

Страница 85: ...power up A set clock with a good battery present will clear this error Be sure to read the Load Profile data prior to setting the clock to clear the error The dead battery will cause some invalid inte...

Страница 86: ...TOU Version Time Date Wrong in PC or Handheld Device Verify and update time date in programming device and download new time and date to meter Refer to the appropriate software manual for more detail...

Страница 87: ...ity codes have been downloaded to the register the programming device must have the proper code to make connection to the module Verify security codes in the programming software Probe Not Connected P...

Страница 88: ...unication cannot be established See Programmer Cannot Communicate with Meter Test Mode Switch Does Not Place Meter in Test Mode No display items in Test Mode Display List Switch deactivated by softwar...

Страница 89: ...ons 79 Drawings 79 Specifications For a complete list of the latest CENTRON meter specification numbers refer to the CENTRON Meter Specification Numbers Bulletin Part Number 428601 220 Drawings Figure...

Страница 90: ...Specifications and Drawings 80 CENTRON Meter Technical Reference Guide Figure 38 Form 2S Wiring Diagram Figure 39 Form 3S 120V Wiring Diagram...

Страница 91: ...Specifications and Drawings CENTRON Meter Technical Reference Guide 81 LINE LOAD 0 1 2 0 1 2 Figure 40 Form 3S 240V Wiring Diagram Figure 41 Form 4S Wiring Diagram...

Страница 92: ...Specifications and Drawings 82 CENTRON Meter Technical Reference Guide Figure 42 Form 12S Wiring Diagram Figure 43 Form 25S Wiring Diagram...

Страница 93: ...and attained a peak Cold Load Pickup CLPU See Demand Delay Continuous Cumulative Demand The sum of the previous billing period maximum demands and the present period maximum demand CT Ratio The curren...

Страница 94: ...ed in a read only memory ROM or an erasable programmable read only memory EPROM integrated circuit Flash Memory A type of EEPROM chip used for easy and fast information storage It is a solid state sto...

Страница 95: ...ovides the energy kWh consumption module ID number tamper indications meter type and error checking information in each radio frequency transmission Within the 96 bit SCM 26 bits are allocated to the...

Страница 96: ...Glossary of Terms 86 CENTRON Meter Technical Reference Guide Notes...

Страница 97: ...ation 17 Cellnet RF technology C1SC 35 Cellnet Shooter 38 CENTRON developer s kit 17 communication optical port 42 communication problem 77 comparator 70 controls and indicators 43 cover 63 CRC 35 cur...

Страница 98: ...C1SL 41 54 57 C1ST 41 54 load profile 63 power 62 TOU 63 power outage 54 primary security code 61 protocol SCS 41 pulse weight 58 pulse weight calculation 58 R rate 55 rate schedule 55 recycling iv re...

Страница 99: ...three button reset 63 time blocks 54 Time of Use TOU See also TOU 41 TOU 54 63 70 TOU annunciator 70 TOU rate indicators 45 TOU schedule testing 67 troubleshooting blank display 76 communication probl...

Страница 100: ...Index 90 CENTRON Meter Technical Reference Guide Notes...

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