Landis & Gyr FOCUS kWh Technical Manual
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Landis & Gyr FOCUS kWh Technical Manual

Landis & Gyr FOCUS kWh Technical Manual

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FOCUS kWh Solid-State Meter
Technical Manual

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Summary of Contents for Landis & Gyr FOCUS kWh

  • Page 1 FOCUS kWh Solid-State Meter Technical Manual...
  • Page 2 Information in this document is subject to change without notice. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose without the express written permission of Landis+Gyr, Inc.. ...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Purpose ........................ii Target Group......................ii Conditions ......................ii Safety Warnings ....................ii FOCUS Introduction to the ................1 1.1. METER ASSEMBLY ..................1 1.2. BASEPLATE ASSEMBLY ................2 1.3. ELECTRONIC HOUSING ASSEMBLY............... 2 FOCUS Meter Family ................3 2.1.
  • Page 4 TABLE OF CONTENTS Overview of Electronic Hardware..............9 5.1.1. LCD DISPLAY ................... 9 5.1.2. DISPLAY SCROLL SEQUENCE: ............9 5.1.3. DISPLAY FORMAT ................10 5.1.4. DIGITAL POWER INDICATOR............10 5.1.5. POWER UP DISPLAY SEQUENCE............10 5.2. DIAGNOSTICS ................... 10 5.2.1. DIAGNOSTIC ERROR ..............10 5.2.2.

  • Page 5: Purpose

    Purpose This technical manual contains the following information: • Installation instructions, construction, characteristics and maintenance information • Performance and technical data Target Group The contents of this technical manual are intended for technically qualified personnel of energy supply companies responsible for the system planning, installation, commissioning, operation, maintenance, decommissioning and disposal of the meters.
  • Page 6 FCC Information: This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

  • Page 7: Introduction To The Focus

    FOCUS Introduction to the FOCUS meter was designed to be a low-cost, solid-state, kWh-only meter as an alternative metering and AMR platform with attributes that make it more accurate and stable over time. 1.1. Meter Assembly Meter Assembly Exploded View The Focus meter is composed of three basic sub-assemblies: The baseplate assembly, the electronics housing assembly and the meter cover.

  • Page 8: Baseplate Assembly

    1.2. Baseplate Assembly Baseplate Assembly Exploded View The baseplate module is constructed of highly durable thermoplastics. Inside the baseplate is the current transformer and current carrying parts… 1.3. Electronic Housing Assembly Electronics Housing Exploded View The Electronics Housing contains the measurement board and any optional electronics assemblies such as option boards or communication devices.

  • Page 9: Focus

    2.1. Register Types The Focus kWh is an active energy “kWh-only” meter. It is capable of measuring and displaying kilowatt-hours delivered to and received from a load. The energy accumulation register has capacity to display 999999 kWh for all meter forms without overflowing.

  • Page 10: Meter Assembly

    Meter Assembly 3.1. Removal of the Electronics Housing from the Baseplate To remove the Electronics Housing from the baseplate, set meter on a solid surface and place hands around the bottom of the gray housing where it meets with the baseplate. With thumbs in the 6 o’clock position, squeeze firmly with thumbs using considerable force, to flex the housing and release the bottom two fasteners located at the 4 o’clock and 8 o’clock positions.

  • Page 11: Application Information

    Figure 2 – Optional T-Seal Figure 3 – T-Seal Installed Each T-seal is installed by fully inserting it through the cover and through the baseplate assembly. Bend the T- seal tab to prevent extraction. Next, bend the T-seal over so that it resides within the baseplate assembly pocket.

  • Page 12: Meter Form Schematic Diagrams

    4.2. Meter Form Schematic Diagrams Self-contained meter forms Figure 4 – Form 1S Figure 5 – Form 2S, 2SE Figure 6 – Form 12S (Network)
  • Page 13 Figure 7 – Form 25S (Network) Figure 8 – Form 2K Transformer Rated Meter Forms Figure 9 – Form 3S...

  • Page 14: Installation Procedures

    Figure 10 – Form 4S The form 3S features a movable fifth terminal that can be located in the 3 o’clock or 6 o’clock centered locations. Forms 12S and 25S (Network) feature a movable fifth terminal that can be located in the 3 o’clock, 6 o’clock centered, or 6 o’clock offset locations.

  • Page 15: Overview Of Electronic Hardware

    Overview of Electronic Hardware 5.1.1. LCD Display Figure 11 – Liquid Crystal Display kWh FOCUS display shows the digital power indicator, nominal service voltage, and kWh digits. 5.1.2. Display Scroll Sequence: Focus Configuration Tool The display scroll sequence is programmable at the factory or by the user with .

  • Page 16: Display Format

    5.1.4. Digital Power Indicator The Focus kWh has a digital power indicator similar to the Landis+Gyr traditional “caterpillar” and consists of six segments. The DPI moves from left to right at a rate proportional to energy delivered to the load and moves from right to left at a rate proportional to the energy received from the load.

  • Page 17: Diagnostic Error Mapping

    Diagnostic Errors Unprogrammed Configuration Error Self Check A/D not ready UART transmit not ready RAM Error Memory copy with invalid destination Nonvolatile Memory Error Nonvolatile read error Nonvolatile write error Measurement Error MMI overrun Bad checksum Voltage overrun 5.2.2. Diagnostic Error Mapping The number of each diagnostic sub-error (Sub-error example: Measurement Error/MMI overrun) occurrences is accumulated and compared to a counter limit which, when met or exceeded, results in the error being displayed if it is not masked.

  • Page 18: Configuring The Meter

    The display multiplier multiplies the displayed energy value(s) by N for 1 ≤ N ≤ 240. N is an integer value. Meter Calibration 7.1. Calibration LED The Focus kWh has an infrared light emitting diode (LED) that emits energy pulses. The meter demonstrates registration accuracy in accordance with the accuracy requirements of Section 2.4.3 when tested via the calibration LED.

  • Page 19: Factory Calibration

    7.1.2. Customer Calibration Adjustment Focus kWh calibration is adjustable by the user. Individual element FL calibration biases up to 1.00% in increments of 0.05% are provided by means of a calibration utility and the configuration port. The factory calibration FL series (and individual element, when applicable) calibration value can not be altered by user calibration adjustment.
  • Page 20 Focus kWh provides two scalable TTL-level pulse outputs for interfacing with pulse accumulating AMR modules. Each output is user configurable to function in one of two operating modes. Mode 1:Quadrature Pulse AMR pulse output #1 responds to energy accumulation in the +kWh register. AMR pulse output #2 responds to energy accumulation in the –kWh register.

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