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Electricity Prepayment Meters
Residential
.
Document version: 0.00
Date: 16 August 2011
Issued by Product Management: Dave Tarr
Filename: User Manual Gemini PLC (with PLC CIU Mk3) 16Aug2011.doc
© 2011 Landis+Gyr (Pty) Ltd
Cashpower Prepayment Metering
Cashpower Gemini PLC
User Guide
C as h p o w e r G e m i n i P L C
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Table of Contents
Related Manuals for Landis & Gyr Cashpower Gemini PLC
Summary of Contents for Landis & Gyr Cashpower Gemini PLC
- Page 1 Electricity Prepayment Meters Residential Cashpower Prepayment Metering Cashpower Gemini PLC User Guide Document version: 0.00 Date: 16 August 2011 Issued by Product Management: Dave Tarr Filename: User Manual Gemini PLC (with PLC CIU Mk3) 16Aug2011.doc © 2011 Landis+Gyr (Pty) Ltd...
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Page 2: Revision History
2/38 Released Abbreviations Revision history Version Date Originator Comments 2011-08-16 Dave Tarr Document release Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... - Page 3 Set 2nd Dispenser Key Voucher ____________________________________________ 18 7.5.1.4 Clear Tamper Voucher ____________________________________________________ 18 7.5.1.5 Set Power Limit Voucher __________________________________________________ 18 7.5.1.6 Set Credit Levels Voucher (Proprietary Voucher) _______________________________ 18 7.5.1.7 Clear Credit Voucher _____________________________________________________ 18 Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd...
- Page 4 Operation on Internal Battery Supply ______________________________________________ 29 Information Functions____________________________________________________________ 31 11.1 Meter Number (Register 000) ____________________________________________________ 32 11.2 Instantaneous Power (Register 001) ______________________________________________ 32 11.3 Current Credit Register (Register 002) _____________________________________________ 32 Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd...
- Page 5 Supply Group Code (SGC) Register (Register 060) ___________________________________ 35 11.27 Total Units Counter - 10Wh Resolution (Register 061) _________________________________ 35 Power Line Carrier Communication Considerations ___________________________________ 36 Remote Access __________________________________________________________________ 37 Safety __________________________________________________________________________ 38 Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd...
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Page 6: Abbreviations
Electrically Erasable Programmable Read Only Memory Identity KWh: Kilowatt hour LCD: Liquid Crystal Display LED: Light Emitting Diode PLC: Power Line Carrier SELV: Safe Extra Low Voltage SGC: Supply Group Code STS: Standard Transfer Specification Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 7: Introduction
Released 7/38 Introduction The Cashpower Gemini PLC Split Meter is a single phase 80 Amp split prepayment meter in a British Standard housing that uses Power Line Carrier (PLC) communication technology between the meter and the customer interface unit It is ideal for replacing conventional meters in existing apartment blocks and established dwellings/houses, where installation of a dedicated communications cable is not practical. -
Page 8: Overview Of System Operation
This enables utilities to remotely interrogate a number of meters, all connected to the same low-voltage supply, via any appropriate communication backbone infrastructure e.g. GSM. Figure 3: Typical PLC Metering Configuration Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 9: Meter Layout
During normal operation it flashes once every 5 seconds (effectively a power on indication). Other status conditions are indicated by two or more flashes at regular intervals as follows: Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... - Page 10 However, all voucher processing is carried out at the meter, the customer interface unit effectively acting as a remote control and display panel only. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd...
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Page 11: Customer Interface Unit Layout
A yellow alarm LED indicator duplicates the alarm indication on the LCD - 6.4. Its main function is to give the customer a very visible indication of critically low credit levels. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 12: Customer Interface Unit Lcd
No credit and supply disconnected. Zero Credit Display shows total units used (kWh). Load switch closed and consumption Credit Metering Mode rate indicator flashes at a rate proportional to the power being used. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 13: Happy And Sad Faces
The power (kWh) icon will also flash on and off if no measurable energy is being consumed. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 14: Plc Communication Data Indicator
ON for a particular numeric display, the data indication will result in it flashing OFF briefly. Point flashes when PLC Point flashes when PLC data is received data is transmitted Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 15: Meter Operation - Prepayment Mode
LCD displays a „busy‟ indication - a set of bars scrolling continuously from left to right. For further details on the characteristics of PLC communication, refer to section 12. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 16: Prepayment Voucher Processing
Once the voucher has been processed, the meter: Displays the remaining credit. Then, depending on the result of the processing, one of the following sequences can occur. Refer to – 7.4.2.1 through – 7.4.2.6. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 17: Voucher Accepted
Set 1st dispenser key (meter-specific voucher) – 7.5.1.2. Set 2nd dispenser key (meter-specific voucher) – 7.5.1.3. Clear tamper (meter-specific voucher) – 7.5.1.4. Set maximum power load or power limit level (meter-specific voucher) – 7.5.1.5. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 18: Electricity Credit Voucher
7.5.1.8 Initiate Dispenser Test Voucher (Meter Non-Specific Voucher) There are a number of non meter-specific vouchers that can be used to test various functions on the meter. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... - Page 19 For a single test per voucher, the test has a duration of 5 seconds. On completion of the test sequence, the meter returns to its normal mode of operation. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd...
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Page 20: Commissioning Voucher (Non Meter-Specific, Proprietary Voucher)
Non meter-specific commissioning voucher – 7.5.2.10. Meter-specific commissioning voucher – 7.5.2.11. Meter-specific decommissioning voucher – 7.5.2.12. 7.5.2.1 Credit Transfer Voucher This voucher transfers a variable quantity of credit to the meter. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 21: Key Change
(factory-defined setting of approximately 15 seconds) and then returns to normal operation. The non meter-specific initiate breaker test voucher number is: 9999 9208 1566 9249 Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 22: Non Meter-Specific Commissioning Voucher
The setting can be changed when necessary via a set power limit voucher from the prepayment vending system. This algorithm is included in the meter‟s software and is implemented as follows: Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 23: Reverse Power Detection And Metering
The option can be invoked as a means of preventing the meter from being installed fraudulently with line and load connections reversed, in which case the meter will never power up once the load switch is open. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 24: Optical Port
From a safety point of view, the meter must not be powered when accessing this port – the Credit Reader provides the necessary low-voltage supply to power the logic circuitry. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 25: Anti-Tamper Features
Once the terminal cover is fitted to the meter, check that the tamper switch is fully depressed by checking the tamper switch status in the meter state registers. If a meter has been tampered, normal operation can only be restored by entering a clear tamper voucher. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 26: Meter Operation (Credit Metering Mode)
When toggling from credit-metering mode to prepayment-metering mode, normal prepayment operation resumes as per the state of the various meter registers e.g. if there is no credit in the credit register, the load switch will open. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 27: Customer Interface Unit Operation
However, before it can be used with a particular meter, it is necessary to „link‟ the customer interface unit with its associated meter to ensure Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 28: Decommissioning
In order to decommission a customer interface unit, it does not have to be in communication with a meter, nor does it need to be connected to the AC mains supply (it can be done under battery power). The process of decommissioning is as follows: Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 29: Audible Low-Credit Alarm
From the customer‟s point of view, it is not possible to differentiate between a general power failure condition and an out of credit condition – in both cases the AC mains supply is not available. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... - Page 30 A credit voucher may be entered under battery power in the normal way, after the customer interface unit has been „woken up‟ as described above. Refer to – 10.3 for details of the battery condition indicator. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd...
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Page 31: Information Functions
Last credit voucher ID Value of last credit voucher entered Key revision and key type Tariff index Current credit register (10 Wh resolution) SGC register (STS only) Total units counter (10Wh resolution) Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 32: Meter Number (Register 000)
The meter displays the level at which the lower two credit wedges on the LCD come into operation. 11.10 High Credit Level (Register 013) The meter displays the level at which the upper two credit wedges on the LCD come into operation. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 33: Power Limit Level (Register 014)
Do not open (open) the meter load switch when commissioning a customer interface unit XXXX 1XXX Not used XXXX X1XX Disable (enable) creep detection Don‟t display (do display) negative credit XXXX XX1X XXXX XXX1 (Enable) STS Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 34: Meter (Changeable) Option Register 0 (Register 035)
11.21 Last Voucher Entered (Register 055) For STS meters, the voucher identifier is displayed (0 – 16777215) i.e. number of minutes elapsed since 01:01:1993. For CTS meters it is a sequence number. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 35: Value Of Last Voucher Entered (Register 056)
The meter displays the value of the total units register with a resolution of 0.01kWh. The most significant digit of the display (if in use) will be “pushed” off the display in this mode. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 36: Power Line Carrier Communication Considerations
Occasionally, faulty electrical circuits can generate a lot of interference that disrupts communications (pay particular attention to compact fluorescent lamps (CFLs). Isolate as many circuits as possible to try and determine the source of the interference. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 37: Remote Access
Automatic Meter Reading system. These communications are totally independent and will have no effect on the operation of either the customer interface unit or the meter. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd... -
Page 38: Safety
The communications interface is galvanically isolated from the mains supply (isolation specification is in excess of the requirements for SELV circuits as specified in SANS IEC 60950). The customer interface unit may be mounted in any convenient location inside a customer‟s residence. Cashpower Gemini PLC – User Guide © Landis+Gyr (Pty) Ltd...
Need help?
Do you have a question about the Cashpower Gemini PLC and is the answer not in the manual?
Questions and answers
In the pole box the meter landis flashes light quickly on the exclamation sign.
When the Landis & Gyr Gemini PLC meter flashes a yellow LED quickly on the exclamation sign, it provides a visual indication of a specific meter status. The number of flashes at regular intervals indicates different conditions:
- 2 flashes: Meter error
- 3 flashes: Meter tampered (load switch open)
- 4 flashes: Meter out of credit (load switch open)
- 5 flashes: Power limit exceeded
- 6 flashes: Meter not initialised (load switch open, meter won’t accept credit until vending keys are entered)
- 7 flashes: Meter decommissioned (load switch open)
- 8 flashes: Keypad locked out due to incorrect entries
- 9 flashes: Waiting for manual load switch
During normal operation, the LED flashes once every 5 seconds.
This answer is automatically generated
Vending keys?
The vending keys for the Landis & Gyr Gemini PLC are the "Set 1st Dispenser Key" and "Set 2nd Dispenser Key" vouchers. These must be entered into the meter within a 5-minute period of each other to effect a key change. They can be entered in any order.
This answer is automatically generated
The meter does not accept my new token number.
The Landis & Gyr Gemini PLC meter may not be accepting the new token number for several reasons:
- The number is not recognized by the meter.
- The number has already been used.
- Not enough digits were entered (an incomplete voucher entry).
- The meter has been tampered and needs a tamper reset voucher before normal operation can resume.
Additionally, if the keypad is locked due to a previous failed entry, it won't respond until the lock period ends.
This answer is automatically generated
Meter box off and its dark. Tried to buy electricity with no luck. It flashes red and exclamation and shows number 30