EMH metering LZQJ-SGM Operating Instructions Manual
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EMH metering LZQJ-SGM Operating Instructions Manual

Digital 4-quadrant/combi meter
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EMH metering
GmbH & Co. KG
Neu-Galliner Weg 1 • 19258 Gallin
GERMANY
Tel.
+49 38851 326-0
Fax
+49 38851 326-1129
Email info@emh-metering.com
Web
www.emh-metering.com
Tel.
+49 38851 326-1930 (Technical Support)
Email support@emh-metering.com
LZQJ-SGM
Digital 4-quadrant/combi meter
Scope of delivery .................................................................................... 2
Important information.............................................................................. 2
Technical data......................................................................................... 5
Housing, display and control elements ................................................... 7
Installation and start-up ........................................................................ 13
Functions and operation ....................................................................... 24
Installation control register C.86.0 ........................................................ 35
Error register F.F ................................................................................... 37
Communication module ........................................................................ 39
Abbreviations ........................................................................................ 40
EU Declaration of Conformity ............................................................... 43
Issue date: 14 June 2022; subject to technical changes.
LZQJ-SGM2-IM-E-1.09

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  • Page 1: Table Of Contents

    EMH metering GmbH & Co. KG Neu-Galliner Weg 1 • 19258 Gallin GERMANY Tel. +49 38851 326-0 +49 38851 326-1129 Email info@emh-metering.com www.emh-metering.com Tel. +49 38851 326-1930 (Technical Support) Email support@emh-metering.com LZQJ-SGM Digital 4-quadrant/combi meter Operating instructions Scope of delivery ..................2 Important information................

  • Page 2: Operating Instructions

    Scope of delivery Please check that the contents of the packing box are complete before starting the installation and start-up procedure. y 1 LZQJ-SGM device y 1 operating instructions y Connection diagram y Accessory (optional) If the contents are incomplete or damaged, please contact your supplier.
  • Page 3 Target audience These instructions are intended for technicians who are responsible for the installation, connection and servicing of the devices. The device must be installed and put into operation only by qualified electricians in accordance with generally accepted rules of technology and the regulations, which are relevant for the installation of telecom- munications equipment and end devices.
  • Page 4 Care and disposal instructions DANGER Risk of fatal injury in case of contact with live parts! Before the housing of the meter is cleaned, all conductors that the meter is connected to must be de-energised. Use a dry cloth to clean the device housing. Do not use any chemical cleaning agents! The following table names the components and how they are to be treated at the end of their life cycle.

  • Page 5: Technical Data

    Notes on correctness of measurements For the notes on correctness of measurements applicable to this meter in Germany, please see the enclosed document entitled “Länderspezifische Hinweise zum Messbetrieb für den LZQJ-SGM.” Technical data Voltage, current, See name plate frequency, utilisation...
  • Page 6 Data interfaces Optical Optical data interface D0 (38400 baud), as per IEC 62056-21 Electrical RS232 (115200 baud), as per ANSI EIA/TIA-232-F (R1997) RS485 (115200 baud), as per ANSI/TIA/EIA-485-A-98 (R2003) CL0 (19200 baud), as per DIN 66348-1 Output Opto-MOSFET max. 250 V AC/DC, max. 100 mA Transformer connected Power consumption Direct connected meter...

  • Page 7: Housing, Display And Control Elements

    Housing, display and control elements 1 - Name plate 2 - Test LED for reactive power 3 - LC display 4 - Test LED for active power 5 - Optical call sensor (optional) 6 - Meter cover 7 - Sealing screw 8 - Optical data interface D0 9 - Call-up button 10 - Transformer plate (only for transformer connected meters)
  • Page 8 Optical call sensor: For calling up the display lists on the dis- play. The sensor is operated with a torch. Optical For communication between meter and data interface D0: read-out device by means of an optical communication unit (OKK). You will find more information on the optical data inter- face in the user manual.
  • Page 9 Name plate (example) 1 - Test LED for reactive power 2 - Test LED for active power 3 - Year of construction 4 - Product standard 5 - Optical call sensor 6 - Serial number 7 - Overvoltage category / utilisation category (direct connected meter) 8 - Accuracy class 9 - Operating temperature 10 - Space for ownership labelling...
  • Page 10 The name plate contains data for identification of the meter, the registra- tion mark, and technical specifications and explanations. The cursor labelling below the display and the description of the OBIS code numbers on the name plate are designed as standard and not adapted to the meter version.
  • Page 11 LC display The LZQJ-SGM is equipped with a liquid crystal (LC) display as per VDEW specifications 2.1. 1. The operation display shows the energy direction that is currently being measured by the meter (export/import of active power, inductive/capacitive reactive power). If a load current is flowing, the energy direction arrow indicates which quadrant is being used for the measurement, e.g.:...
  • Page 12 5. The unit shown matches the type of energy being measured or the measurement displayed. 6. The additional cursor field displays the operating states for the meter. The arrows indicate whether any manipulation or an installation error was registered or if the power threshold was exceeded.

  • Page 13: Installation And Start-Up

    Installation and start-up The meters in series LZQJ-SGM are suitable for wall mounting as per DIN 43857-2. When connecting the meter, always observe the corresponding connection diagram, which is located on the meter’s name plate and in the delivery documents. Please also observe the notes on the installation control register.
  • Page 14 DANGER Risk of fatal injury in case of contact with live parts! During installation or when replacing the meter, the wires connected to the meter must be de-energised. y The installer bears responsibility for coordinating the rated values and parameters of the supply-side overcurrent protection devices with the maximum rated currents of the meter.
  • Page 15 Connection to current and voltage terminals Proceed as follows when connecting the LZQJ-SGM: 1. Ensure that all lines are free from voltage. 2. Shorten the conductors to the necessary length if necessary. 3. Strip each of the conductors to the stripping length specified in the table below (for transformer connected meters, see page 15;...
  • Page 16 Terminal block The specific terminal assignment can be found on the name plate of the meter. View from the front (maximum terminal assignment, specifications in mm) Button for manipulation detection of terminal cover View from below (maximum terminal assignment, specifications in mm)
  • Page 17 DANGER Risk of fatal injury due to arcing and electric shock! The voltage taps in the meter are not fuse-protected, and are connected directly to the measuring voltage potential. y The transformer connected meter must be fuse-protected in a voltage circuit using a pre-fuse with ≤...
  • Page 18 DANGER Risk of fatal injury from high voltage when voltage transformers are used! y Observe all the safety instructions in the documents for the voltage transformers in use. y If necessary, the secondary side of the voltage transformers must be earthed. Connection information Example of a transformer connected meter: You will find further connection diagrams as per DIN 43856 in...
  • Page 19 b) Direct connected meter Direct connected Current and voltage Additional meter terminals terminals Terminal dimensions 9.8 x 10.9 2.6 x 2.2 W x H or d (mm) Minimum connection cross sections (mm²) Maximum connection cross sections (mm²)* Minimum torques (Nm) —...
  • Page 20 View from below (maximum terminal assignment, specifications in mm) When the devices are tested, the voltage circuits are disconnected by a path separator. Remove the path separa- tor again when resuming normal operation! DANGER Improper installation endangers life and health, and can lead to malfunctions and material damage! The voltage connections in the meter are not fuse-protected, and are connected directly to the measuring voltage potential.
  • Page 21 Connection information Example of a direct connected meter: You will find further connection diagrams as per DIN 43856 in the user manual. Additional terminals (transformer connected meters and direct connected meters) In addition to the connection diagram for current and voltage, the type plate contains information on the individual interfaces, such as the maxi- mum voltage of the outputs, for example.
  • Page 22 This description provides the basis for the following possible wiring: Output Input Data interface S0: Opto-MOSFET ES: External control semiconductor relay input The electrical data interfaces RS232, RS485 and CL0 are implemented by means of spring-loaded terminals. The assignment is as follows: RS232 RS485 RS GND...
  • Page 23 Connection to spring-loaded terminals Proceed as follows to connect external devices to the spring-loaded terminals: 1. Shorten the conductors to the necessary length. 2. Strip 4 to 5 mm of the conductor. 3. If it is a finely stranded conductor, equip it with a ferrule. Ensure that all individual wires are fully inside the terminal.

  • Page 24: Functions And Operation

    Functions and operation For a detailed description on operating the LZQJ-SGM by means of a PC connected to the meter, please see the chapter on the COMBI-MASTER 2.0 in the user manual. The following sections de- scribe only the procedure using the buttons on the device.
  • Page 25 Reset Operation display (see user manual) Display test Menu Display button Menu Reset button Call-up list Set list (Std-dAtA) (SEt) Info list Load profile list (InFO-dAtA) (P.01) (End) (End) The following points apply to all menu items described below: Two measuring or registration period lengths (generally 30 min) after the last time a button is pressed, the system automatically returns to the operation display.
  • Page 26 Operation display Menu item Display Button Operation Go to display display (scroll- test ing) t < 2 s Display test In the display test, all segments of the display flash periodically. This allows you to check the reliability (performance) of individual segments. From the display test, you can go to the call-up button menu or the reset button menu through a short actuation of the call-up button or the reset button.
  • Page 27 Call-up button menu Menu item Display Button Entry point of Next menu the call-up list item t < 2 s Enter the call- up list 2 s < t < 5 s Entry point Next menu of the load item profile list t <...
  • Page 28 Call-up list Menu item Display Button First register Next menu item t < 2 s Next register Next menu item t < 2 s Pre-value Next menu item t < 2 s Repeat items 3 and 4 to display further registers/pre-values End of the de- Return to fault data list...
  • Page 29 y To return to the date of the displayed load profile entries, use long actuation of the call-up button. y The end of the menu is indicated by the End menu item. Load profile list (default LP) Menu item Display Button Entry point Enter the load...
  • Page 30 Load profile list (default LP) Menu item Display Button Second load Next menu profile value item for the first entry t < 2 s Repeat items 6 and 7 to display further registers/pre-values. After the last entry of the selected day, go to item 10. Time of next Repeat items entry of se-...
  • Page 31 Reset button menu Menu item Display Button Operation dis- Next menu play (scrolling) item t < 2 s Display test Go to call-up button menu mode t < 2 s Go to reset button menu t < 2 s Entry point Next menu of the adjust- item...
  • Page 32 Reset button menu Menu item Display Button End of display Return to menu item 3 t < 2 s Return to item 3 2 s < t <5 s Go to opera- tion display t > 5 s Adjustment list (SEt) In the adjustment list it is possible to modify adjustable values by means of the call-up and reset button.
  • Page 33 Adjustment list Menu item Display Button Next adjust- Edit first digit ment value (here: date t < 2 s in the format YY•MM•DD) Edit the first Increase digit digit (digit by 1 flashing) t < 2 s Edit next digit t <...
  • Page 34 You can display additional menu items through short actuation of the call-up button. y To call up the data quickly, you can skip the pre-values through long actuation of the call-up button. y The end of the menu is indicated by the End menu item. Info list Menu item Display...

  • Page 35: Installation Control Register C.86.0

    Installation control register C.86.0 The installation control register C.86.0 registers installation errors. As a rule it is displayed on the alternating display or can be called up using the information list in the reset button menu. The monitored measured values result from the instantaneous values. If the meter was installed without errors, the register contains the value “00000000”.
  • Page 36 Event Value Meaning Manipulation detection Manipulation of the meter cover Manipulation of the terminal cover Manipulation through magnetic fields Wrong rotating field Failure of neutral conductor Wrong rotating field Phase failure Phase failure L1 Phase failure L2 Phase failure L3 Failure of the external power supply Negative power direction Negative power direction L1 (P)

  • Page 37: Error Register F.f

    Error register F.F The LZQJ-SGM is equipped with an error register that records the func- tion errors of the meter. The output of the error register is performed via the display and the read-out lists. If an error is displayed, the meter data can no longer be used as a basis for billing.

  • Page 38: Combi-Master 2.0 Configuration And Read-Out Program

    For a detailed description of the COMBI-MASTER 2.0, please see the relevant chapters in the user manual. The program is used to configure the LZQJ-SGM meter, both during start-up and during adjustments while the meter is in operation. The pro- gram also makes it possible to save the meter configuration in a file.

  • Page 39: Communication Module

    Communication module The LZQJ-SGM is equipped with an interface for a communication module. The rated voltage of the module supply via the module interface is 17 V DC. The supply is equipped with current limiting at 300 mA. For detailed information on the communication modules,...

  • Page 40: Abbreviations

    Abbreviations Accuracy class Optical interface as per EN 62056-21 Deutsches Institut für Normung e.V. (German Standardisation Institute) Direct connected European Norm Utility company Current International Electrotechnical Commission Ingress Protection (protection classification) Infrared L1, L2, L3 External conductor Liquid Crystal Liquid Crystal Display Light emitting diode Measuring period (of the maximum) Output signal of the current measuring period...

  • Page 43: Eu Declaration Of Conformity

    EU Declaration of Conformity The current EN Declaration of Conformity is available on the in- ternet site www.emh-metering.com in the “Products & Solutions” area for the meter’s product description. The specifications for creating the Declaration of Conformity can change at any time, so save the Declaration of Conformity when the device is delivered.

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