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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.  The relative timing of the two pulses satisfies the requirements of a 

disk pickup application with the ability to determine the direction of disk rotation.  The energy represented by 

each pulse is scaled by the meter’s Ke value. 

Mode 2: DifferkWh Pulse 
AMR pulse outputs #1 & #2 respond to energy accumulation in the +kWh register.  The output #2 pulse polarity 

is opposite of the output #1 pulse polarity (consistent with form C outputs).  The energy represented by each 

pulse is scaled by the meter’s Ke value. 

 

 

 

Summary of Contents for FOCUS kWh

Page 1: ...FOCUS kWh Solid State Meter Technical Manual ...

Page 2: ... 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 765 742 1001 Document History Title FOCUS Solid State Meter Technical Manual Document Number Bulletin Revision Date Description Level Issued Original 12 03 Initial Issue ...

Page 3: ... 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 ...

Page 4: ...OSTIC 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 Out...

Page 5: ...ewhere 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 qual...

Page 6: ...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 eq...

Page 7: ... 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 purpose...

Page 8: ...rmer 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 ...

Page 9: ...ield 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 th...

Page 10: ...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 a...

Page 11: ...at it resides within the baseplate assembly pocket Finally bend the top of the T seal over so that it is flush against the cover 4 Application Information 4 1 Available Meter Forms The FOCUS is available in the following meter forms 4 1 1 S Base Transformer rated Class 10 20 3S 4S Self contained class 100 1S Self contained class 200 2S 12S and 25S Network Self contained class 320 2SE 4 1 2 K Base ...

Page 12: ...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 ...

Page 13: ...7 Figure 7 Form 25S Network Figure 8 Form 2K Transformer Rated Meter Forms Figure 9 Form 3S ...

Page 14: ...pe form and class match the installation 3 Install meter in the appropriate socket 4 3 1 Socket base 1 Compare wiring with diagrams of Section 3 2 to make sure the meter is wired properly 2 Plug meter terminal blades into socket to make a connection with the terminal jaws 4 3 2 K Base 1 Compare the wiring with diagrams of Section 3 2 to made sure the meter is wired properly 2 Install the meter on ...

Page 15: ...ual displays The display choices are kWh kWh NET kWh ADDED kWh Active DPI segment check Diagnostic Flags Line Voltage s Duplicate display choices are permitted as long as the total number of display choices in the scroll sequence does not exceed 16 The time of display can be programmed from 1 to 15 seconds in one second increments The active digital power indicator DPI or caterpillar segment check...

Page 16: ...s 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 The DPI makes one revolution for each Kh of metered energy Each DPI segment on off transition is observable when occ...

Page 17: ...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 5 2 3 Diagnostics Error Display Power Outage Counter and User Access All diagnostic errors are displayed by means of a single six digit diagnostic status word The user has the ability to mask each individual diagnostic error from being displayed i e...

Page 18: ...r also has the ability to enter initial energy values into the kWh and kWh accumulation registers This feature allows a user to pre load energy values into a replacement meter before it goes into service The user can perform this function in a meter shop 6 1 3 Display Multiplier The user has the ability to program a display multiplier kWh values contained in the energy registers are multiplied by ...

Page 19: ...tion biases is stored in separate nonvolatile memory locations accessible through the configuration port The user calibration biases are scaled to represent percent registration biases from the factory calibration registration values 7 2 Data Retention All billing data is stored in nonvolatile memory Billing data is retained during loss of power to the meter 8 Pulse Outputs 8 1 Pulse Initiator Out...

Page 20: ...ation in the kWh register The relative timing of the two pulses satisfies the requirements of a disk pickup application with the ability to determine the direction of disk rotation The energy represented by each pulse is scaled by the meter s Ke value Mode 2 Differential kWh Pulse AMR pulse outputs 1 2 respond to energy accumulation in the kWh register The output 2 pulse polarity is opposite of th...

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