EMH metering LZQJ-SGM User manual

EMH metering
GmbH & Co. KG
Neu-Galliner Weg 1 • 19258 Gallin
GERMANY
Tel. [phone]
Fax [phone]
Email [email protected]
Web www.emh-metering.com
Tel. [phone] (Technical Support)
Email [email protected]
Operating instructions
LZQJ-SGM
Digital 4-quadrant/combi meter
EN
Issue date: 14 June 2022; subject to technical changes. LZQJ-SGM2-IM-E-1.09
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
COMBI-MASTER 2.0................. 38
Communication module........................................................................ 39
Abbreviations........................................................................................ 40
EU Declaration of Conformity............................................................... 43

2
Scope of delivery
Please check that the contents of the packing box are complete before
starting the installation and start-up procedure.
y1 LZQJ-SGM device
y1 operating instructions
yConnection diagram
yAccessory (optional)
If the contents are incomplete or damaged, please contact your supplier.
Store, use and transport the device in such a way that it is protected
against moisture, dirt and damage.
Important information
These operating instructions are part of the documentation.
󰀨-
tures described herein may not be applicable to your particular device.
Please see the user manual for more comprehensive information about
the device. Please also observe all the documents included with other
components (such as the optical communication unit, for example).
Symbols used
DANGER Indicates immediate danger that can lead to severe
injuries or death unless avoided.
ATTENTION Indicates a situation that can cause damage to prop-
erty or the environment unless avoided.
This note indicates important information in the
operating instructions.

3
Target audience
These instructions are intended for technicians who are responsible for
the installation, connection and servicing of the devices.

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.
After installation and start-up of the meter, make sure that the
operating instructions are available to the electricity customer.
Intended use
The meter is intended to be used solely for the measurement of electrical
energy in inside spaces, and it must not be operated outside the speci-

Make sure that the meter is suitable for the intended application.
Maintenance and warranty instructions
The device requires zero maintenance. It is not permitted to make any
repairs independently in the event of any damage (e.g. due to transport
or storage).
If the device is opened, the warranty and the Declaration of Conformity
will be rendered null and void. The same applies where a defect is
-
peratures and weather conditions), or by improper or careless use or
handling.
The seals may only be broken by authorised personnel.

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.
Components Waste collection and disposal
Printed circuit
boards
Electronic waste: Dispose of such waste in accord-
ance with the local regulations.
LEDs,
LC displays
Hazardous waste: Dispose of such waste in accord-
ance with the local regulations.
Metal parts Recyclable material: Sort such material and send it
for recycling.
Plastic parts Send sorted plastic parts to a recycling plant (re-
granulation) or, where applicable, to a waste inciner-
ation plant (thermal energy generation).
Batteries Take safety precautions against short circuits before
disposing of the batteries. Batteries can leak or
self-ignite. Dispose of the batteries in their original
packaging or insulate the terminals. Do not dispose
of batteries with the domestic waste. Instead, observe
the locally applicable waste and environmental
protection standards.
Basic safety instructions
Please adhere to the following basic safety instructions:
yRead all the enclosed instructions and information.
yObserve the warnings on the device and in the documents.
yAlways be aware of safety issues and hazards when working on
the device.

5
yThe applicable occupational health and safety regulations for electri-
cal installations must be observed during assembly, installation and
removal of the device.
yMake sure that the installation and operating location of the device

yBefore assembly, check the devices for any externally visible damage.
y
line with its intended use.
yThe connection cables used to connect a meter must be selected to
match the maximum load of the meter and the installation environ-
ment in terms of type, cross section, voltage and temperature.
y
yObserve the maintenance and warranty instructions.
yIf the mains power fails and then returns, there is no need to do
anything to the meter.
Notes on correctness of measurements
For the notes on correctness of measurements applicable to
this meter in Germany, please see the enclosed document

LZQJ-SGM.”
Technical data
Voltage, current,
frequency, utilisation
category
See name plate
Overvoltage category
Rated peak withstand
voltage
OVC III (as per IEC 62052-31)
4kV (as per IEC 62052-31)
Input
System voltage min. 80...max. 277 V AC

6
Data interfaces
Optical
Electrical
Optical data interface D0 (38400 baud),
as per IEC 62056-21
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
Power consumption
per phase
Transformer connected
meter Direct connected meter
Voltage circuit
Meter in multifunc-
tion mode with
EMH modules
max. 2.2 W / 2.8 VA
@ 3 x 58/100 V AC
max. 2.5 W / 4.2 VA
@ 3 x 240/415 V AC
max. 2.0 W / 3.4 VA
@ 3 x 220/380 V AC
max. 2.0 W / 3.5 VA
@ 3 x 240/415 V AC
Current path < 0.04 VA < 0.004 VA
Temperature range −25 °C...+55 °C
Limit range for operation, storage and transport:
−40 °C...+70 °C
Altitude up to 3,000 m
Humidity max. 95%, non-condensing, as per IEC 62052-11,
EN 50470-1 and IEC 60068-2-30
Protection class II
Degree of protection IP 54
Fire properties as per IEC 62052-31
Environmental con-
ditions
Mechanical:
M1 according to the Measuring Instruments Directive
(2014/32/EU)
Electromagnetic:
E2 according to the Measuring Instruments Directive
(2014/32/EU)
Intended operating location:
Interior as per EN 50470-1
Weight approx. 1.0 kg (transform-
er connected meter)
approx. 1.2 kg (DC meter)

7
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)
11 - Reset button
12 - 
13 - Module compartment
14 - Terminal cover
15 - Sealing screws

8
Optical call sensor: For calling up the display lists on the dis-
play. The sensor is operated with a torch.
Optical
data interface D0:
For communication between meter and
read-out device by means of an optical

more information on the optical data inter-
face in the user manual.
Module compartment: 
A modem or interface module can be
installed here. Installation and removal can
be performed under voltage.
Reset button: 
The reset button can be used to reset the
maximum registers, for example.

button in the user manual.

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
11 - Information about connection of the meter
12 - OBIS codes for the most important registers
13 - 
14 - Safety and application information
15 - Voltage, current, frequency
16 - Type designation and type code

10
-

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.

in question.
Transformer plate
Transformer connected meters are equipped with a transformer plate.


11
LC display
The LZQJ-SGM is equipped with a liquid crystal (LC) display as per

1. The operation display shows the energy direction that is currently
being measured by the meter (export/import of active power,

the energy direction arrow indicates which quadrant is being used
for the measurement, e.g.:
1st quadrant +P/+Q 3rd quadrant −P/−Q
2nd quadrant −P/+Q 4th quadrant +P/−Q
2. The battery status indicator shows the residual capacity of the
internal power reserve of the real time clock.
󰀨
= Power reserve run-down, internal battery is empty or not
available. In this instance, the real time clock cannot be
󰀨
3. The communication display lights up permanently when the data
interface (optical or electrical) and the meter are communicating.

4. The phase display indicates when individual phase voltages are


12
5. The unit shown matches the type of energy being measured or
the measurement displayed.
6. The additional cursor eld 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.
MAN The cursor is active where any manipulation of the terminal

INST The cursor is active if an entry has been registered in the
installation control register.
PWR 
meter was exceeded.
7. The standard cursor eld displays the operating states of the
󰀨
󰀨
T1 - T4 󰀨
M1 - M4 󰀨
RL 
CLOCK The cursor is active when the internal device clock actu-
󰀨
SET The corresponding cursor is active when the meter is in
Set mode.
8. The value area displays the measurements.
9. The code area
key. The display can show all six value groups.

13
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.
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.
yExternal devices that are operated using the meter’s voltage taps

the applicable technical regulations.
DANGER
Risk of fatal injury due to arcing and electric shock!
The inputs and outputs for the additional terminals are not fuse-protected
in the meter.
y
the applicable technical regulations.
y-
tions on the meter name plate in accordance with the applicable
technical regulations.
y󰀨


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.
yThe 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.
yRemove the corresponding pre-fuses, on the mains side and on the
creation side in case of a two-sided feed. Store them in a secure
location to ensure that no one else can insert the pre-fuses again
without being noticed.
yIf you use selective automatic circuit breakers for system discon-
nection, secure them to prevent them from being switched on again
without being noticed.
yBefore the installation of a meter, make sure that the consequences
of disconnecting the electrical system will not result in danger to the
life or health of persons or cause any economic damage.
yTo avoid any danger or damage, take appropriate measures to
prevent malfunctions before disconnection of the system.
y
connection of the meter.
ATTENTION
Application of excessive torque will damage the connection
terminals!
The appropriate torque is dependent on the type of connection line
involved and its maximum current.
yTighten the connection terminals to the corresponding torque as
per IEC 60999-1.

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. 
in the table below (for transformer connected meters, see
page 15; for direct connected meters, see page 19).
4. 
a ferrule.
5. Open the screw-type terminal.
6. Insert the conductor into the screw-type terminal up to its
insulation.
7. Tighten the screw of the screw-type terminal while observing

the cable insulation is not put inside the terminal.
8. Repeat the process until all conductors are connected.
a) Transformer connected meter
Transformer
connected meter
Current and voltage
terminals
Additional
terminals
Terminal dimensions
W x H or d (mm) 5.3 x 5.5 2.6 x 2.2
Minimum connection cross
sections (mm²) 2.5 1.0
Maximum connection
cross sections (mm²)* 10 2.5
Minimum torques (Nm) 1.2 —
Maximum torques (Nm) 1.7 —
Screw type
Cross slot combination screw
type PZ1
(as per ISO 4757)
Spring-loaded
terminal
Thread size M4 —
Stripping length (mm) 10.0 5.0
* Rated connection capacity based on IEC 60999-1

16
Terminal block

meter.
View from the front (maximum terminal assignment, specications
in mm)
View from below (maximum terminal assignment, specications
in mm)
Button for manipulation detection of
terminal cover

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.
yThe transformer connected meter must be fuse-protected in a voltage

DANGER
Risk of fatal injury from high voltage when current transformers
disconnected!
In transformer connected meters, the high voltage generated on a
disconnected current transformer can cause fatal injuries, will destroy
the current transformer, and can result in electric arcs on the terminal
block.
yBefore disconnecting the current paths, short-circuit the secondary
circuits of the current transformer at its testing terminals.
DANGER
Danger to life due to excess voltages on the terminals of the cur-
rent paths!
The voltages on the terminals of the current paths must not be higher
than the rated voltages of the voltage circuits and not be higher than

yUse the meter only with suitable current transformers to avoid
exceeding the voltage limits. If necessary, the secondary side of
the transformers must be earthed.

18
DANGER
Risk of fatal injury from high voltage when voltage transformers
are used!
yObserve all the safety instructions in the documents for the voltage
transformers in use.
yIf necessary, the secondary side of the voltage transformers must
be earthed.
Connection information
Example of a transformer connected meter:

the user manual.

19
b) Direct connected meter
Direct connected
meter
Current and voltage
terminals
Additional
terminals
Terminal dimensions
W x H or d (mm) 9.8 x 10.9 2.6 x 2.2
Minimum connection cross
sections (mm²) 16 1.0
Maximum connection
cross sections (mm²)* 35 2.5
Minimum torques (Nm) 4 —
Maximum torques (Nm) 5 —
Screw type
Cross slot combination screw
type PZ2
(as per ISO 4757)
Spring-loaded
terminal
Thread size M10 —
Stripping length (mm) 18.0 5.0
* Rated connection capacity based on IEC 60999-1
Terminal block

meter.
View from the front (maximum terminal assignment, specications
in mm)
Button for manipulation detection of
terminal cover

20
View from below (maximum terminal assignment, specications
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.
yThe connecting paths must be fuse-protected as per the applicable
-
tion on the meter’s name plate.
yUse an overcurrent protection device rated for a maximum of 100 A
as per the applicable Technical Connection Rules for Power Instal-
lations (e.g. selective main line circuit breaker) upstream of a meter
with direct connection.