Landis & Gyr FOCUS kWh User manual

FOCUS kWh Solid-State Meter
Technical Manual

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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..
2003 Landis+Gyr, Inc.
All rights reserved.
For further information, contact:
Landis+Gyr, Inc.
Meter Division
2800 Duncan Road
Lafayette, IN 47904-5012 USA
Tel. [phone]
Document History
Title: FOCUS Solid State Meter Technical Manual
Document Number: Bulletin #???
Revision Date Description
Level Issued
Original 12/03 Initial Issue

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TABLE OF CONTENTS
Purpose .................................................................................................................. ii
Target Group.......................................................................................................... ii
Conditions .............................................................................................................. ii
Safety Warnings .................................................................................................... ii
1. Introduction to the FOCUS ..........................................................................1
1.1. METER ASSEMBLY ....................................................................................... 1
1.2. BASEPLATE ASSEMBLY ................................................................................ 2
1.3. ELECTRONIC HOUSING ASSEMBLY............................................................... 2
2. The FOCUS Meter Family .............................................................................3
2.1. REGISTER TYPES......................................................................................... 3
3. Meter Assembly ...........................................................................................4
3.1. REMOVAL OF THE ELECTRONICS HOUSING FROM THE BASEPLATE .............. 4
3.2. INSTALLATION OF THE ELECTRONICS HOUSING ONTO THE BASEPLATE ...... 4
3.3. SEALING THE METER................................................................................... 4
4. Application Information ..............................................................................5
4.1. AVAILABLE METER FORMS........................................................................... 5
4.1.1. S-BASE ............................................................................................ 5
4.1.2. K-BASE ............................................................................................ 5
4.2. METER FORM SCHEMATIC DIAGRAMS.......................................................... 6
4.3. INSTALLATION PROCEDURES ...................................................................... 8
4.3.1. SOCKET BASE .................................................................................. 8
4.3.2. K-BASE ............................................................................................ 8

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TABLE OF CONTENTS
5. 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. DIAGNOSTIC ERROR MAPPING ....................................................... 11
5.2.3. DIAGNOSTICS ERROR DISPLAY, POWER OUTAGE
COUNTER, AND USER ACCESS ........................................................ 11
6. Configuring the Meter ...............................................................................12
6.1. CONFIGURATION PORT.................................................................. 12
6.1. 1 INITIAL POWER-UP AND OPERATION ............................................... 12
6.1.2 BILLING DATA RESET/PRESET ........................................................ 12
6.1.3 DISPLAY MULTIPLIER..................................................................... 12
7. Meter Calibration .......................................................................................12
7.1. CALIBRATION LED..................................................................................... 12
7.1.1. FACTORY CALIBRATION ................................................................. 13
7.1.2. CUSTOMER CALIBRATION ADJUSTMENT........................................ 13
7.2. DATA RETENTION ..................................................................................... 13
8. Pulse Outputs ............................................................................................13
8.1. PULSE INITIATOR OUTPUT........................................................................ 13
8.2. COMMUNICATIONS ................................................................................... 13

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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.
Conditions
This technical manual is for personnel who are qualified and have received instructions in basic electrical
principles, including safety procedures for installation of energy meters.
Safety Warnings
The following safety precautions must be observed during all phases of operation, service, and repair of this
device. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates
safety standards of design, manufacture, and the intended use of the metering instrument. Landis+Gyr, Inc.
assumes no liability for the customer's failure to comply with these requirements.
Warning: Any work on, or near, energized meters, meter sockets, or other metering equipment can
present a danger of electrical shock. All work on this product should be performed only by qualified
electricians and metering specialists in accordance with local utility safety practices, utility requirements,
and procedures outlined in Chapter 14 of The Handbook for Electricity Metering (9th Edition). The
information contained within this manual is intended to be an aid to qualified metering personnel. It is not
intended to replace the extensive training necessary to handle metering equipment in a safe manner.
Use care when servicing with the power on.
The
FOCUS does not have an auto-ranging power supply. Care should be taken to ensure that meters
are installed correctly, matching meter form and voltage with the installation.

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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.
Changes or modifications not expressly approved by Landis+Gyr could void the user’s
authority to operate the equipment.
Do not change the original antenna without pre-approval from the original meter
manufacturer. This will violate the FCC regulations of using the radio.
Note:
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. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to 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, the user is 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 receiver.
- Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
- Consult Landis+Gyr or an authorized technician for help.

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1. Introduction to the FOCUS
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. The electronics housing assembly snaps onto the baseplate and creates a
weatherproof seal when the cover is installed. The cover includes an emboss to align an optical probe for
register configuration purposes.

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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. The Electronics Housing assembly snaps onto the baseplate and can be
removed and reinstalled many times without damage to the meter.

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2. The FOCUS Meter Family
The FOCUS provides more than just reliability and accurate billing data. The FOCUS is designed to be a building
block for a complete metering system. Each
FOCUS has built-in compatibility for a variety of AMR packages.
Any of these can be factory installed or conveniently added to the meter in the field.
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.
The meter supports four energy metric displays:
• +kWh (energy delivered to the load)
• -kWh (energy received from the load)
• NET kWh (the net energy consumed by the load)
• ADDED kWh (the total energy produced in the electrical service/load system)
Figure 1 –
KWH FOCUS

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3. 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. It may be necessary to alternate pressure by
thumbs until both fasteners are released. Once these two fasteners are released, push gently toward the 12
o’clock position to release the top two fasteners. The housing can be lifted off and the blue and white power
connector can be unplugged.
3.2. Installation of the Electronics Housing onto the Baseplate
Before installing the Electronics Module onto the Baseplate, make sure that the Electronics Module and
Baseplate are free of foreign debris and that any cables are properly routed to prevent interference with the
meter’s electrical connectors. Attach blue and white power connector. Line up the 4 slots in the gray
electronics housing with the 4 mating snap-on protrusions located on the black baseplate. Once aligned,
apply gentle force to snap the two assemblies together.
3.3. Sealing the Meter
The FOCUS meter comes standard with T-seal provision.
Whether to seal the meter or not is left to the user’s discretion.
If sealing is desired, T-seals can be installed through the
FOCUS cover and baseplate assembly.