Summary of FOCUS kWh
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Focus kwh solid-state meter technical manual.
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I 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...
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Ii table of contents purpose..................................................................................................................Ii target group..........................................................................................................Ii conditions...........................
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Iii table of contents 5. Overview of electronic hardware................................................................9 5.1.1. Lcd display ................................................................................... 9 5.1.2. Display scroll sequence: ............................................
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Iv 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 s...
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V 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. Chang...
Page 7: Focus
1 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...
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2 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 cont...
Page 9: Focus
3 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...
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4 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 fi...
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5 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. Finally, bend ...
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6 4.2. Meter form schematic diagrams self-contained meter forms figure 4 – form 1s figure 5 – form 2s, 2se figure 6 – form 12s (network).
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7 figure 7 – form 25s (network) figure 8 – form 2k transformer rated meter forms figure 9 – form 3s.
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8 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. 4.3. Install...
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9 5. Overview of electronic hardware 5.1.1. Lcd display figure 11 – liquid crystal display the kwh focus display shows the digital power indicator, nominal service voltage, and kwh digits. 5.1.2. Display scroll sequence: the display scroll sequence is programmable at the factory or by the user with ...
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10 a two character programmable alphanumeric label can be associated with each display except the active dpi segment check, which has all segments in the alphanumeric field, illuminated. This two-character field is used to identify the energy displayed. 5.1.3. Display format the display accommodates...
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11 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 e...
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12 6. Configuring the meter 6.1. Configuration port the ability to configure the meter is provided through a secure meter configuration port. A cover mounted optical configuration port accommodates meter configuration by the user. The configuration port shall be used only in a meter shop ambient env...
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13 the calibration led produces pulses in response to energy whether it is delivered to the load or received from the load. Registration verification testing requires no more than 30 seconds at full load. The calibration led is visible in meter shop lighting and room temperature conditions. 7.1.1. F...
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14 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 outp...