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Electricity Prepayment Meters
Residential
Document version: 0.0
th
Date: 14
December 2011
Issued by Product Management: Dave Tarr
© 2011 Landis+Gyr (Pty) Ltd
Cashpower Prepayment Metering
Cashpower Gemini HMI
User Guide
C as h p o w e r G e m i n i H M I – V e r s i o n 1 1 F i r m w a r e

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Summary of Contents for Landis & Gyr Cashpower Gemini HMI

  • Page 1 Electricity Prepayment Meters Residential Cashpower Prepayment Metering Cashpower Gemini HMI User Guide Document version: 0.0 Date: 14 December 2011 Issued by Product Management: Dave Tarr © 2011 Landis+Gyr (Pty) Ltd C as h p o w e r G e m i n i H M I – V e r s i o n 1 1 F i r m w a r e...
  • Page 2: Revision History

    2/35 Released Introduction Revision history Version Date Originator Comments 14/12/2011 Dave Tarr First Release Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 3: Table Of Contents

    Set Energy Limiting Mode (Meter-Specific Token) __________________________________ 20 7.3.15 Set DAE Value (Meter-Specific Token) ___________________________________________ 20 7.3.16 Force Load Switch Open (Meter-Specific Token) ___________________________________ 20 Commissioning and Decommissioning the Meter _____________________________________ 20 Power Limiting ________________________________________________________________ 20 Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 4 Software Version Number (Register 048) ___________________________________________ 33 13.21 Power-Fail Counter (Register 050) ________________________________________________ 33 13.22 Last Token ID in Date/Time Format (Register 054) ___________________________________ 33 13.23 Identifier of Last Token Entered (Register 055) ______________________________________ 33 Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 5 Low Credit Level – 0.000001kWh Resolution (Register 065) ____________________________ 34 13.33 Latch Inhibit Timer – 1-Minute Resolution (Register 066) _______________________________ 34 13.34 Error Codes _____________________________________________________________________ 35 14.1 Meter _______________________________________________________________________ 35 14.2 Customer Interface Unit _________________________________________________________ 35 Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 6: Introduction

    Introduction Introduction Cashpower Gemini HMI is part of the Gemini family of prepayment meters and is a single-phase, keypad-based, stand-alone or split prepayment electricity meter in a British Standard housing. If used as a split prepayment meter, it comprises two parts, namely the meter and the customer interface unit.
  • Page 7: Human-Machine Interface (Meter)

    Keypad: The meter has a 12-key non tactile keypad with audible feedback. The keypad is used for entry of tokens and accessing various management functions and meter parameters via the information mode. The keypad also has a backspace key. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 8: Customer Interface Unit (Ciu)

    Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 9 Customer Interface Unit (CIU) Released 9/35 Figure 5: Customer Interface Unit - Rear View Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 10: Liquid Crystal Display Indications

    Mode available. The credit wedge will always be scrolling – up, if energy credit is accumulating, or down, if it is Scrolling wedge decreasing. Figure 7: Operational Displays Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 11: Load Switch Status Indicator

    This icon turns on in response to pressing the information key on the keypad. It indicates that the meter is in information mode and the contents of various registers can be viewed. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 12: Currency Indicator

    Similar responses would apply during token entry e.g. entering an invalid Credit Transfer Number would result in the sad face flashing for a short period of time. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 13: Led Indicators

    On the Customer Interface Unit, the alarm indicator functionality of the LCD is duplicated on a flashing yellow LED to give a very clear visual indication to the consumer that the credit level is low and disconnection of the electricity supply could occur soon. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 14: Optical Communications Port (Meter Only)

    Optical Communications Port (Meter only) Optical Communications Port (Meter only) This port enables data to be transferred to and from the meter (e.g. the accessing of various registers or downloading of new parameters). Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 15: General Meter Operation

    Not enough digits entered Not enough digits entered (30 second timeout) (30-second timeout) Meter tampered Meter Tampered Service call-out Service callout Number expired Number expired Power off Service callout Figure 9: Typical displays Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 16: Entering Tokens Via The Keypad

    Note: Two tokens are required for a STS key change. The scrolling credit wedge is displayed. The key revision and key type, followed by the tariff index, is displayed during the above scrolling sequence. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 17: Token Overflow Rejection

    Commissioning (non meter-specific token) - refer to section 7.3.9. Commissioning (meter-specific token) - refer to section 7.3.10. Decommissioning (meter-specific token) - refer to section 7.3.11. Set credit-metering mode (meter-specific token) - refer to section 7.3.12. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 18: Electricity Credit Token

    Clear Credit Token On accepting a clear credit token, the meter clears any remaining credit to zero and opens the load switch, thus interrupting the electricity supply to the customer. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 19: Initiate Dispenser Test Token (Non Meter-Specific Token)

    On accepting a set credit metering mode token, the meter commences operation as described in section 10. 7.3.13 Set Prepayment Metering Mode (Meter-Specific Token) On accepting a set prepayment metering mode token, the meter commences operation as described in section 9 Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 20: Set Energy Limiting Mode (Meter-Specific Token)

    Power limiting is not a form of safety overload protection. It is designed to generally limit the overall usage of power in a particular area (possibly dictated by reticulation limitations or linked to a tariff allocation). Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 21: Reverse Power Detection And Metering

    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 HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 22: 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 token. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 23: Meter Operation (Prepayment Metering Mode)

    (load switch open) and the meter now toggled to the credit metering mode, the load switch will close. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 24: Meter Operation (Credit Metering Mode)

    Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 25: Meter Operation (Energy Limiting Mode)

    C : Consumer starts using energy again after reconnection.  Timing for the dispensing of the DAE is synchronised to the mains supply frequency. During a power failure the DAE does not continue to increment. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 26: Alarms

    If the customer does not press a key on the keypad to silence the alarm as described above, the buzzer will continue to sound and the alert LED flashed while the credit level is Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 27 Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 28: Customer Interface Unit - Specific Functions

    The customer interface unit generates a variety of tones in response to token entries e.g. there are two distinctly different tones to indicate Transfer Number Accept or Transfer Number Reject sequences. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 29: Information Functions

    Current credit register (0.000001kWh resolution) DAE accumulated credit register (0.000001kWh resolution) DAE 15-sec portion register (0.000001kWh resolution) Low credit level (0.000001kWh resolution) – Energy Limiting Mode only Latch inhibit timer (1-minute resolution) Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 30: Meter Number (Register 000)

    It is this value that gets broken down into equal portions and then added to the current credit register (refer to section 13.3) at 15-second intervals when the meter is operating in Energy Limiting Mode. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 31: Low Credit Level (Register 012)

    11 = Energy limiting mode XXXX 1XXX Significant reverse energy detected XXX1 XXXX Stop DAE incrementing when load switch forced open XX1X XXXX Not used X1XX XXXX Not used 1XXX XXXX Not used Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 32: Meter (Fixed) State Register 0 (Register 031)

    Do not disconnect / (Disconnect) load switch on power fail Don‟t tamper (do tamper) on significant reverse energy XXX1 XXXX XX1X XXXX Tamper detect sensing switch disabled (enabled) X1XX XXXX Not used 1XXX XXXX Not used Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 33: Meter (Display) State Register 0 (Register 037)

    This option gives a quick indication of whether a key-change has been performed on the meter. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 34: Total Units Counter – 0.001Kwh Resolution (Register 061)

    When the load switch has opened due to either a power limiting event or expiry of DAE and is in a 30- minute lockout state, the register displays the time remaining before the load switch will close again. Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...
  • Page 35: Error Codes

    Copyright © 2005-2011 Landis+Gyr. All rights reserved. Subject to change without notice. Landis+Gyr (Pty) Ltd 2 Slate Avenue, N1 Business Park Old Johannesburg Road, Kosmosdal Ext. 7 Gauteng, South Africa Tel: +12 645 3100 www.landisgyr.com/za Cashpower Gemini HMI – User Guide © Landis+Gyr (Pty) Ltd...

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