Operating Instructions
ENERGYSENS
Power Measurement for Energy Data Management
3-349-974-03
1/12.17
ENERGYSENS
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TABLE OF CONTENTS
1 Outline................................................................................................................................................................... 4
2 Installation ............................................................................................................................................................ 5
3 Software and Communication .......................................................................................................................... 10
3.1 System Configuration ................................................................................................................................... 13
3.1.1 Installation of the ENERGYSENS Service Tool .................................................................................... 13
3.1.2 Program Start ........................................................................................................................................ 13
3.1.3 General configurations and communication with the base ................................................................... 14
3.1.3.1 Language Selection ....................................................................................................................... 14
3.1.3.2 Sensor Connection ........................................................................................................................ 14
3.1.3.3 Modbus ID ...................................................................................................................................... 14
3.1.3.4 Serial Interface ............................................................................................................................... 14
3.1.3.5 TCP/IP Address ............................................................................................................................. 14
3.1.3.6 Connecting ..................................................................................................................................... 14
3.1.3.7 Display of sensors .......................................................................................................................... 15
3.1.4 Base Configuration ................................................................................................................................ 15
3.1.4.1 Subnet Mask .................................................................................................................................. 16
3.1.4.2 Standard Gateway ......................................................................................................................... 17
3.1.5 Update base .......................................................................................................................................... 17
3.1.6 Assigning the Sensors .......................................................................................................................... 18
3.1.7 Phase assignment for the individual metering points in the sensors .................................................... 18
3.1.8 Reading the settings of the sensors ...................................................................................................... 19
3.1.9 Sensor update ....................................................................................................................................... 19
3.1.10 Read out of sensor measurements ....................................................................................................... 20
3.2 Configuration of the adjustable Modbus registers ........................................................................................ 21
3.2.1 Configuration process ........................................................................................................................... 21
3.2.2 Sensor configuration ............................................................................................................................. 22
3.2.3 Configuration of the devices .................................................................................................................. 22
3.2.4 Register configuration ........................................................................................................................... 23
3.2.5 Register functions.................................................................................................................................. 23
3.2.6 Read-out of register values ................................................................................................................... 24
3.2.7 Writing of register values in a file .......................................................................................................... 24
3.2.8 Saving of register configuration ............................................................................................................. 24
3.2.9 Reset of active energy counter ............................................................................................................. 25
3.2.10 Possible conflicts and errors ................................................................................................................. 25
3.3 Operation ...................................................................................................................................................... 27
3.3.1 Addresses of adjustable Modbus registers ........................................................................................... 27
3.3.2 Addresses of fixedly defined Modbus registers .................................................................................... 28
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4 Glossary .............................................................................................................................................................. 30
5 Technical data ..................................................................................................................................................... 32
6 Safety instructions ............................................................................................................................................. 33
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Base
Sensor
Connection via flat ribbon cable
100 Mbit Ethernet
Serial interface
Bottom side: Terminals for power supply: N – L1 – L2 – L3
LED
LED
Metering points
1 Outline
ENERGYSENS serves as detailed power measurement of single loads in 50 / 60 Hz low voltage systems. The data
of such power measurement may then be used to carry out measures to e.g. improve the energy efficiency as part
of an Energy Management System. The power measurement is done at the leads which exit the circuit breakers for
the single devices within a low voltage distributor.
The modular system is composed of a base and one / more sensors. The sensors are equipped with several
metering points to measure the power of multiple loads. The various versions of sensors differentiate with regard to
the number of metering points and the respective nominal current.
The sensors are connected to the base via a flat ribbon cable (Sensorbus).
The measurements and the supply voltage required for the sensors are transferred via this flat ribbon cable. During
installation, the flat ribbon cable is finished to fit the individual conditions of the respective facility.
The base and circuit breakers are mounted on a top hat rail (TS35). The sensors are mounted on the circuit
breakers.
The Modbus Protocol works as interface to read the power values. ENERGYSENS supports the protocol versions
Modbus-TCP and Modbus-RTU.
.
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Slider
2 Installation
Please completely read this installation and operator’s manual before you install and start the ENERGYSENS! This
manual contains important safety information and is based on the technical stage of 13.09.2016. We reserve the
right to update without prior announcement the information given in this manual.
General safety instructions:
The electrical installation and startup may only be carried out by a qualified licensed electrician respecting the
following indications. An inappropriate execution of installation and startup may lead to damages and/or endanger
people.
ENERGYSENS is only designed for usage in single and tri- phase low voltage systems with a nominal voltage of
230 / 400 V AC at 50 resp. 60 Hz.
Prior to installation all voltage carrying connections and measurement leads have to be disconnected from the
mains.
The base is fixed by means of a slider on top-hat rail (TS35).
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Power supply
Power supply via terminals (voltage entries) on bottom side.
For fastening, slide the connection lead into the respective terminal. To disengage use the release key.
Only L1 and N are connected in single phase systems. In tri-phase systems all phases and N are connected.
The terminals are marked with their respective use.
Voltage entries L1, L2, L3 must be secured by circuit breakers 1A, release
characteristic B.
A method has to be provided allowing that the device may be powerless connected,
e.g. a clearly marked interrupter or a fused cut-off switch.
Conductor cross sections for L1, L2, L3 and N:
Solid core: 0.5 mm
2
– 1.5 mm2
Wire stripping length: 10 mm
Fine-wired with insulated ferrule: 0.5 mm2 – 1 mm2
Important: The voltage connection of the base is installed in such a way that the stripped blank connection
wire can be touched. The base must be installed respectively covered in such a way that the area of the
voltage connection is covered.
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Detached power supply line
Power supply line in metering points
Detach possibly existing power supply lines prior to fastening the sensors. Before working on these lines, ensure
that they are disconnected from the mains.
The power supply lines are lead through the openings of the metering points and are re-connected.
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Upper part
Bottom part
Wide side
Narrow side
The plugs for the flat ribbon cable are assembled with upper and bottom part.
Note that the plugs are not symmetrical.
Use appropriate pliers to squeeze the plugs onto the cable.
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The base and all sensors are connected with a flat ribbon cable. As shown in the picture, the plugs are put in the
Sensorbus interfaces of the base and of the voltage sensors:
• The connectors are squeezed onto the cable at appropriate intervals.
• The sensors may be connected to both the left and the right side of the base.
• The order of the sensors on the cable is irrelevant.
• Only one central unit can be connected.
• Important: Pin 1 of the cable must always be on the front of the base and all sensors.
• Important: The cut off cable end has no insulation. Keep the cable ends away from non-insulated low
voltage cables. Maintain a minimum distance of 6 mm.
Shrink-tube the open ends
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Zentraleinheit
Sensor
Sensor
Sensor
Modbus
Sensorbus
(Flachbandkabel)
Systemgrenze
iPSensor
Service Tool
Energy
Management
Software
Startbits
1
Stopbits
1
Parity
Even
Baudrate
115.2 KBaud
Basismodul
ENERGYSENS
3 Software and Communication
ENERGYSENS has an internal interface via which the base communicates with the sensors. Communication to the
outside takes place via the connections of the base.
ENERGYSENS has a Modbus interface as external interface. Both Modbus TCP (via Ethernet) and the Modbus
RTU (via RS485) protocols are supported.
This document assumes a basic understanding of these protocols.
The communication can be carried out via one of the two interfaces, but it is also possible to use both interfaces
alternatively.
All functions are available on both interfaces.
ENERGYSENS is supplied with a .net based configuration program (ENERGYSENS Service Tool). This program is
used to configure the measuring system and it requires .net framework, version 4.0. The operation of this tool can
be found in the chapters on configuration.
For operation, an energy management software is required, which is able to read Modbus registers and process the
corresponding data. This software is not part of the delivery. The interface via which this software accesses the
measured data can be found in the chapter "Operation".
The configuration possibilities for this software must be described by the manufacturer of the corresponding
software.
Modbus TCP communication is via a 100 Mbit Ethernet interface with a RJ45 plug on the front of the device.
Modbus RTU communication is via a RS485 interface, which has three terminals on the front of the device.
For Modbus RTU communication, the following communication parameters must be set:
The ENERGYSENS Service Tool sets the required parameters for the serial interface itself.
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A (+)
Ethernet
RS485
GND
B (-)
The picture shows the communication interfaces of the base.
interface
interface
The Ethernet interface must be connected with an Ethernet cable CAT5 or better with a 100Mbit switch.
The RS485 interface is connected via the terminals. The picture shows the assignment of the signals to the base.
The connection wire must only be pushed into the respective terminal for fixing. Release is done with the release
button.
Conductor cross sections for A(+), B(-), GND:
Fine-wire with insulated wire end ferrule: 0.25 mm2
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1 KΩ 120 Ω 1 KΩ
+5V
GND
A (+)
B (-)
The termination of the RS485 interface in the device corresponds with this wiring:
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Free sensor places and
Sensors not yet
assigned
Configurations
for Base
3.1 System Configuration
ENERGYSENS is configured using the ENERGYSENS Service Tool.
This is used in particular for the following settings:
• Setting of base communication parameters (IP address or Modbus ID)
• Assignment of the sensors with their metering points to free sensor locations
• Assignment of the respective phases of the voltage measurement to the metering points of the sensors
• Definition of the logic devices and setting of the adjustable registers
3.1.1 Installation of the ENERGYSENS Service Tool
The ENERGYSENS Service Tool must only be copied to a directory on the PC. The user must have write
permission in the directory.
3.1.2 Program Start
To start, run the executable „ControlFramework.exe“
The program starts with its start screen. The system configuration is done via this screen. The screen is divided in
three parts.
already assigned
sensors
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3.1.3 General configurations and communication with the base
3.1.3.1 Language Selection
The operating language of ENERGYSENS Tool is set via language selection.
3.1.3.2 Sensor Connection
The sensor connection is used to determine whether the ENERGYSENS service tool is to communicate with the
base via TCP / IP or the serial interface. Depending on the selection, only the corresponding additional fields are
available.
3.1.3.3 Modbus ID
This parameter is only used for communication via the serial interface.
This parameter sets the Modbus ID for communication with ENERGYSENSBase on the serial interface.
In the delivery condition, each base has Modbus ID 1. If the base is to be addressed via the serial interface after
delivery, a Modbus must be used in which no other device uses the ID 1.
In case of communication via TCP/IP with the base, the Modbus ID is ignored in the telegrams. In this case, the
addressing is exclusively carried out via the base IP address.
The selection is done via a list.
3.1.3.4 Serial Interface
This parameter is only used for communication via the serial interface.
The parameter is used to determine which serial interface of the PC (COM port, for example COM1) is to be used to
communicate with the base.
The selection is done via a suitable entry in the text field.
3.1.3.5 TCP/IP Address
This parameter is only used for communication via TCP/IP.
The parameter is used to set the IP address for communication with the respective base in the network.
In the delivery state, each base has the IP address 192.168.127.20. If, after delivery, the base is to be addressed
via TCP / IP, a subnet must be established in which this address can be addressed by the ENERGYSENS Service
Tool. The selection is made by a suitable entry in the text field.
The setting procedure of ENERGYSENS base IP address is described in chapter „Base configuration”.
3.1.3.6 Connecting
After successful connection to the respective system, the user has access to the other options on the interface.
After disconnecting, they are deactivated again.
During connection, identification is made as to which sensors are connected to the base.
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3.1.3.7 Display of sensors
The current status of the sensors can be read with the button "Refresh list”. If the "Auto" checkbox is activated, it is
updated every 3 seconds.
With the "Restart Identification” button, the configuration is reset and the connected sensors are identified again.
The function and meaning of the display are explained in detail in the chapter "Assigning the Sensors".
3.1.4 Base Configuration
The button „Base Configuration“ opens a window for the base configuration. In this window, single setting values of
the base can be readout and the communication parameters of the central unit can be changed
The „Read” button in the respective line is used to read out the corresponding parameter of the base. The “Write”
button is used to write the parameters in the base.
The communication parameters will only take effect after a restart of the base.
Parameters without “write” button cannot be changed by the user. Their display is for information purposes only.
Modbus ID:
ID with which the base may be addressed on the Modbus.
TCP/IP address:
ID with which the base may be addressed via TCP/IP.
The IP address can be changed in this field. After a change, the connection has to be closed, the new IP address
has to be entered in the Service Tool’s communication area and the connection has to be reestablished.
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Alternatively, the TCP/IP address can also be set via a ping command:
The software of ENERGYSENS’s central unit reacts to Ethernet ping messages as follows:
A ping message always contains a MAC address and an IP address. The MAC address may also be a broadcast
address (0).
Ping messages where the MAC address corresponds with the MAC address of ENERGYSENS base (no
broadcast), set the transferred IP address as new IP address in the ENERGYSENS base
To achieve this, follow these steps for a Windows PC:
• The PC must have an own IP address in the same subnet as the desired IP address of ENERGYSENS.
• For the MAC address of the ENERGYSENS base (this is located on the part number sticker on the back), a
static entry must be generated in the ARP table of the PC.
• A shell in administrator mode is opened.
• The command
netsh interface show interface
is used to display the Ethernet interfaces
• The command
netsh interface ipv4 add neighbors "Name of the LAN-Verbindung" „IP“ „MAC“
is used to create a new ARP entry.
Example:
netsh interface ipv4 add neighbors Ethernet 192.168.127.88 70-B3-D5-3F-60-FF
• Mit Using the command
arp –a
the entries can be displayed. There must be a static entry for the new desired IP address at the interface, which
is located in the same subnet. Example:
• Using the command
ping „IP“
A ping message with the MAC address of the ENERGYSENS central unit and the new IP address is sent to the
ENERGYSENS base. Example:
ping 192.168.127.88
The desired IP address is entered.
• The command
arp –d „IP“
deletes the static ARP entry. Example:
ap –d 192.168.127.88
• Afterwards the Service Tool can be used to communicate with ENERGYSENS via the new IP address.
3.1.4.1 Subnet Mask
This parameter is only used for communication via TCP/IP.
The parameter defines the subnet mask of the subnet in which the base is installed.
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3.1.4.2 Standard Gateway
This parameter is only used for communication via TCP/IP. The parameter specifies the TCP / IP address of the
default gateway in the subnet where the base is installed.
Ser. Delay:
The central unit answers the "Read Register" commands on the Modbus RTU interface with an adjustable delay.
During this delay, the polling device must change the data flow direction on the interface from Send to Receive.
Depending on the device, this can take a different time. The parameter can be used to set the delay in ms, thereby
optimizing the scan speed.
MAC address:
MAC address of base for Ethernet communication.
Serial number:
Serial number of base
Production date:
Production date of base
3.1.5 Update base
Use „SW Update“ to update the software. A dialog box opens for the update.
The corresponding ".ssu" file must be selected and the "Update SW" button must be pressed. The progress of the
update is displayed on the progress bar.
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State
Description
Display blinks green
The sensor has not yet synchronized with the base.
Display blinks yellow
The sensor has not started the application because it is defective. A new
Display blinks red
The sensor no longer responds to the sensor bus
3.1.6 Assigning the Sensors
A list of connected sensors is read out from the base by hitting the button „Connect“ or „Restart Identification“. Each
sensor has a unique serial number.
When assigning the sensors, an individual ID is assigned to the individual sensors. The ID corresponds to a sensor
location within the system and is later used to read out the registers of the respective sensor. In the respective box
symbolizing a sensor, both the ID and the serial number can be seen.
After the read out, the non-assigned sensors are displayed, blinking in red-white, in the right column.
Sensors with an ID assigned, are displayed in white in the left column.
Errors of the assigned sensors are displayed as follows:
The blue LED on the sensor blinks rapidly.
application has to be loaded into the sensor
An update of the error conditions is scanned via the button „Refresh List“. With the auto checkbox activated, the
status is automatically updated every 3 seconds.
When the mouse pointer is over a sensor, this sensor is displayed in blue on the PC surface. At the same time, the
LED of the corresponding physical sensor is switched on. Via the illuminated LED, the sensor can easily be
identified in the configuration view in the system.
To assign an ID to a sensor, simply drag the corresponding sensor to a sensor location while holding down the left
mouse button. If the sensor location is already occupied, the existing sensor is automatically pushed to the next
higher position.
3.1.7 Phase assignment for the individual metering points in the sensors
Open the context menu “Metering point configuration” with a right mouse click on the sensor to open the window for
the metering point configuration.
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In this window, the corresponding voltage phase for each metering point is set up. By hitting OK, the regulated
values for each sensor are saved for the respective sensor.
When using adjustable Modbus registers, the phase assignment has to be carried out when creating the register
configuration. This process is described in chapter “Sensor configuration”.
3.1.8 Reading the settings of the sensors
Via the context menu "Sensorconfiguration", which is opened by right-clicking on a sensor, the window for
configuring the sensors is opened. Various configuration values of the sensors can be read in the window. The
display is for information only, the user cannot change the settings
3.1.9 Sensor update
A software update is done via the context menu „SW Update”. A dialog box for updates opens.
Select the corresponding .ssu file and hit the button „SW Update“. The update progress is displayed in a progress
bar.
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3.1.10 Read out of sensor measurements
Via a context menu which is opened by right-clicking on a sensor, the window for reading the current measured
values is opened.
This window contains a general section in which the measured voltage values are displayed for all phases.
The metering point is selected in the metering point specific part. The current and power values are displayed for
this selected metering point.
The upper line includes the value by second, the lower line the mean value during the past minute.
The measurements are updated by the second.
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Register Gerät Hardware
Logische Elemente
Physische Elemente
3.2 Configuration of the adjustable Modbus registers
ENERGYSENS offers an outwards logical register interface via the register configuration. The user defines devices
to access the metering system ENERGYSENS. A device may have one or three phases and may use the according
number of metering points. The user may create registers for the single devices which supply the quantities of the
complete device, e.g. active power or Cos Phi.
With ENERGYSENS Service Tool, the user may configure the area of the adjustable registers.
3.2.1 Configuration process
Use tab „Registerconfiguration“ on ENERGYSENS Service Tool to configure the adjustable registers. The
configuration may be saved in a file and loaded from the file. In order to process the configuration, no connection of
the service tool to an ENERGYSENS measuring system is necessary. The configuration can be checked offline for
logic errors.
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Gerät
Messstelle 1
Messstelle 2
Messstelle 3
Name
Messgröße
Strom
Wirkleistung
Scheinleistung
Blindleistung
CosPhi
Register
Gerät
Messgröße
Wert
Unbelegt
Registerliste
Geräteliste
ID
Spannung L1
Spannung L2
Spannung L3
Frequenz
Wert
Mittelwert (Minute)
Min Wert (Minute)
Max Wert (Minute)
Sekundenwert
Typ
Typ
0 – 3 Phasig
1 – 1 Phasig
Sensor
Phase Messstelle 1
Phase Messstelle 2
Typ
Phase Messstelle n
ID
Speicherung in den SensorenSpeicherung in der Zentraleinheit
Once created, the configuration can be uploaded in the metering system. Prior to uploading, the configuration has
to be tested for logical errors and compatibility with the hardware. The configuration may also be downloaded from
the hardware.
The configuration consists of the elements with their respective attributes shown in the diagram. When saving in file,
all elements are stored in a configuration file. Storing in ENERGYSENS hardware means that the registers, devices
and texts are saved in the base. The available sensors store the assignment of the phase to each metering point.
The configuration may also be downloaded from the measurement system.
3.2.2 Sensor configuration
The sensors must match the available sensors of the device. The phase of the corresponding conductor has to be
set for each metering point.
3.2.3 Configuration of the devices
Up to 120 devices may be created. The devices receive a name for identification during the configuration process
and an ID from 0 to 255. The ID is given by the user and must be unique. Gaps are permitted and the order is
arbitrary. Each device is either single phase or three-phase configured. Corresponding with the number of phases,
one or 3 metering points have to be assigned. In the case of three-phase devices, no defined order for the three
phases L1, L2 and L3 must be maintained.
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Quantity
Unit
Divisor
Amperage
Active power
Apparent power
Reactive power
CosPhi
Voltage
Frequency
Active energy
Value
Description
Average value
Created during one minute
Minimum
Created during one minute
Maximum
Created during one minute
Instantaneous
Created during one second
3.2.4 Register configuration
Up to 2,032 32 Bit registers can be created. Each register represents a quantity for the device. This value
corresponds to a distinct combination of device, quantity and value. The registers must have a distinct internal
address between 0 and 2,031. Gaps are permissible and the order is arbitrary
During readout from the Modbus, an offset of 0xC000 is added to the internal register address.
Due to the fact that the registers in question are 32 Bit registers,
• always two 16 Bit Modbus registers must be readout. Bit 0 of the address differentiates the high and the low
register.
• for the Modbus’ address calculation, the internal register address has to be multiplied by 2.
The measurements are transferred as big Endian data. The messages of the data in the “read holding register”
have the following meaning
Register N Register N+1
Byte 3 (MSB) Byte 2 Byte 1 Byte 0 (LSB)
3.2.5 Register functions
The registers represent a physical address. Each address has an SI unit.
To support the access of different types of management software, these addresses may be readout as single
precision float in the usual IEEE 754 bit display or as 32 Bit Integer. The change is made via “register type” setting.
Since the requirements for the accuracy of the values also requires digits after the comma, the value read out must
be divided by a divider when using the integer interface in order to obtain the correct value.
A
W
VA
Var
-
V
Hz
kWh
1000
10
10
10
1000
1000
100
10
The following values are offered for each quantity:
value
The measurement is updated once per minute.
The measurement is updated once per minute.
The measurement is updated once per minute.
The measurement is updated once per second.
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Function
Comment
Register address
Decimal digit
Register quantity as index
0 amperage
Register quantity as text
Device ID
Given by user
Device name as text
Given by user
Divisor
Decimal digit
Value as index
0 average value
Value as text
Unit as text
Depending on the quantity
The register for the active power is a special feature:
It is a counter accumulating the value of the active power and may be read out via the register. For this reason, the
distinction between minimum, maximum, average and active value is meaningless. The same meter count is read
out for these settings.
3.2.6 Read-out of register values
The configured register values can be readout with the „Read“ button. The current measurements are displayed in
the column „measurement“. The display in the column already considers the divider for the respective quantity.
3.2.7 Writing of register values in a file
The configured register values can be regularly read out and written into a Microsoft excel file with the „Write“
button. The prerequisite is that Microsoft Excel is installed on the PC on which the Service Tool is installed.
3.2.8 Saving of register configuration
The register configuration can be written into a file with the „Export“ button. A dialog box opens where the file format
can be selected. In case of the generic format, the columns contain this information:
Address on Modbus
1 active power
2 apparent power
3 reactive power
4 CosPhi
5 voltage L1
6 voltage L2
7 voltage L3
8 frequency
9 active energy
Depending on the quantity
1 minimum
2 maximum
3 value by second
For the easy integration of ENERGYSENS into other software environments, customized, specialized export files
can be created. These can then be imported into the respective software in order to obtain easy access to the
configured registers. The export differs according to the use of float or integer registers. For each register a name is
created from the name of the device used, the respective quantity and the value.
When using umlauts, make sure that the respective software can also import files with umlauts.
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Conflict
Type of conflict
Type of error
A sensor ID is included in the
A sensor ID is included in the
The configuration includes a
The configuration includes a
The phase of a metering point
Two devices use the same ID
logic
error
The number of devices is
A three-phase device was not
No metering point was
No phase was assigned to a
A device was assigned a
A three-phase device was not
3.2.9 Reset of active energy counter
The „Reset“ button allows to reset all or individual counters for the active energy.
3.2.10 Possible conflicts and errors
The configuration is tested for errors against the installed hardware and for logical errors within the configuration.
The user gets a prompt with a description of the conflict. The loading process in the system is terminated.
In case of warnings, the configuration may be uploaded in the system.
Logical conflicts can be detected without a system.
At first, the configuration is tested for logical errors. When the configuration is free from logical errors, it is tested for
compatibility with the hardware.
configuration but not in the
system
system but not in the
configuration
sensor with more metering
points than the respective
sensor in the system
sensor with less metering
points than the respective
sensor in the system
in use in the configuration is
differently allocated than in the
system
bigger than admitted
assigned three metering
points
hardware error
hardware warning
hardware error
hardware warning
Message
hardware
logic error
logic error
The configuration value is written in the
system
assigned to a one-phase
device
metering point in use
metering point without sensor
assigned with three metering
points with all phases
logic error
logic error
logic error
logic error
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A register accesses a device
The internal address of a
Two registers use the same
The memory demand is too
not included in the
configuration
register is bigger than the
max. admitted
internal address
big due to long texts
logic error
logic error
logic error
logic error
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Metering
Indication
Unit
Divisor
Effective voltage value
for L1, L2, L3
Frequency
only calculated using L1
Effective current value
For each metering point
Active power
For each metering point
Apparent power
For each metering point
Reactive power
For each metering point
Cosinus Phi
For each metering point
Active energy
For configured devices
3.3 Operation
During operation, the data are continuously measured and offered as Modbus register contents. The corresponding
energy management software accesses the registers and uses the read data.
All measurements are saved as 32 Bit values. 2 16 Bit Modbus registers must always be read out for a complete
measurement. The command "03 Read Holding Register" is used for reading.
The measurements are always integer values.
The measurements are transferred as big Endian data. The data in the “read holding register” messages have the
following meaning:
Register N Register N+1
Byte 3 (MSB) Byte 2 Byte 1 Byte 0 (LSB)
For the individual quantities there is a value with the data of the last second.
In addition there is minimum, maximum and mean value over one minute. These values are updated every 15
seconds.
The registers display physical quantities as integers. Each quantity has a SI unit.
Since the requirements for the accuracy of the value points are required by the comma, the integer value must still
be divided by a divider in order to obtain the correct value.
The following quantities are offered:
V 1000
Hz 100
A 1000
W 10
VA 10
VA 10
1000
kWh 10
3.3.1 Addresses of adjustable Modbus registers
In der Konfiguration können bis zu 2032 32 Bit Register angelegt werden. Jedes Register stellt eine Messgröße für
ein Gerät dar. Dieser Wert entspricht der eindeutigen Kombination aus Messgröße, Wert und Gerät.
Up to 2,032 32 Bit registers may be created in the configuration. Each register represents a measured value of one
device. This value corresponds with the unique combination of quantity, value and device.
The registers have a unique internal address between 0 and 2,031.
During read out on the Modbus, an offset of 0xC000 is added to the internal register address.
Due to the fact that the registers in question are 32 Bit registers,
• always two 16 Bit Modbus registers must be read out. The address’s Bit 0 differentiates the high and the low
register.
• the internal register address has to be multiplied by 2 for the calculation of the Modbus‘ address.
The configuration of the adjustable register is described in the chapter “Configuration of the adjustable Modbus
registers”.
These registers can be configured either for integer or for floating point figures.
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Function / quantity
Current
Active power
Apparent power
Reactive power
COS Phi
Voltages
Adjustable registers
Blank
Bit 15 - 13
Bit 12 - 1
Bit 0
Function
Internal register address of adjustable registers
3.3.2 Addresses of fixedly defined Modbus registers
The measurements of a sensor can be directly, without configuration, readout via the fixedly defined Modbus
registers.
Due to the very large number of metering points, quantities and values, the number of Modbus registers is too large
to display all registers in a table.
A scheme is used to calculate Modbus register addresses. There is a scheme for frequency and voltage values and
another scheme for the remaining values. This scheme simplifies the calculation of the desired register address.
The following indices are used for the scheme:
Index
0
1
2
3
4
5
6
7
Scheme for functions 0-4
Bit 15 - 13 Bit 12 - 7 Bit 6 - 3 Bit 2 - 1 Bit 0
Average: 0
Function
(0-4)
The sensors and metering points are indexed. This means that for the register calculation, 1 has to be subtracted
from the value of the sensor or of the metering point, respectively.
Scheme for function 5
Bit 15 - 13 Bit 12 - 5 Bit 4 - 3 Bit 2 - 1 Bit 0
Function
(5)
Sensor - 1 Metering point - 1
0: voltage value
1: frequency value
Phase:
L1: 0, L2: 1, L3: 2
Min:1
Max:2
Value by second:3
Average: 0
Min:1
Max:2
Value by second:3
H/L
Register
H/L
Register
Scheme for function 6 (adjustable register)
(6)
Admitted values: 0 - 2031
H/L
Register
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Function
Value
Frequency, value by second
0xA026 = 40998
Effective value of voltage L1, value by second
0xA006 = 40966
Effective value of current
0x0000 = 0
Effective value of current
Examples of pre-defined register addresses:
Average value by minute
Sensor ID 1
Metering point 1
Minimum value by minute
Sensor ID 2
Metering point 3
0x0092 = 146
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Term
Definition
Quantity
The quantity is that physical quantity to be measured, e.g. current,
Value
The value defines on which base the quantity is calculated: min., max.,
Measurement
The last read value of a quantity
Metering point
The part of a sensor which calculates the measurement of a conductor
Phase
1. The voltage phase assigned to a metering point.
2. The terminal on the base where the conductor is connected.
Base
The central device with its software.
Sensor
The devices connected to the base for acquisition of the currents of
Sensor ID
Logical address (ID) to address a sensor on the Sensorbus.
Sensor place
ENERGYSENS provides 10 logical sensor places. By setting an ID within
Current transformer
1. Torodoil core for conversion of a primary current into a secondary
future derivate of ENERGYSENS.
Sensorbus
The cable connecting the base and the sensors with the signals and
Firmware
Base, resp. sensor loader. This software part cannot be updated in the
Software
Base, resp. sensor application. This part of the software can be updated
Configuration
Data controlling the firmware and the software. These are in part set
Register configuration
The configuration part describing the configurable registers. The register
Device
This component of the register configuration describes and external
Register
1. This component of the register configuration describes a certain
individual metering points.
Service Tool
PC software of ENERGYSENS to set parameters.
Metering system
All hardware and embedded software components e.g. Error message:
4 Glossary
voltage, frequency
average value, value by second
with current flow.
several conductors with current flow.
the sensor, the sensor is assigned a place.
current. One current transformer is used per metering point.
2. External device for conversion of a primary current into a
secondary current. These current transformers will be used in a
power supply.
field.
in the field.
during production, in part during the user and saved in nonvolatile
memories of the base resp. of the sensors.
configuration can be saved in the metering system and in a file.
When saving in the metering system, parts are saved in the sensors and
other parts are saved in the base.
device for which defined quantities must be gathered. There are single
phase and tri-phase devices.
quantity to be gathered by the device and the corresponding
address for readout of the quantity.
2. Registers with fix addresses serve to readout defined quantities of
No connection with the metering system possible.
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ENERGYSENS
Brand name for all components.
ENERGYSENS Base
Brand name of the base
ENERGYSENS 3/12
Brand name for all sensors with 3 / 12 metering points
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Electrical connections
Voltage (L1)
Power (max. value for base and 10 sensors)
Amperage (min. connection value for the fuse)
Configuration
ENERGYSENSBase
Up to 10 sensors
Versions with 3 and 12 metering points
Length of connection via flat ribbon cable (max.
Dimensions ENERGYSENSBase
Height
Width
Depth
Dimensions sensors
Height
Width
Depth
Voltage measuring
Current measuring
Frequency measuring
Power measuring active power
5 Technical data
230 V, 50/60 Hz
5 W
1 A
Sensors
value)
Different amperage
5 m
91 mm
35 mm (2 modules)
59 mm
13 mm
17.5 mm (1 module) / metering point
47 mm
Communication interface
1 x RS485 Modbus RTU, 115,2 kBaud
1 x Ethernet Modbus TCP, 100 MBit
Measuring technique Nominal value Precision
3~230/400 V Class 1 according to
DIN EN 60688
40 A
80 A
Class 1 according to
DIN EN 60688
50 / 60 Hz Class 1 according to
DIN EN 60688
9.2 kW
18.4 kW
Class 1 according to
DIN EN 62053-21 (applied
1 The accuracy of the power measuring active power is according to DIN EN 62053-21.
The impact of the relevant influencing variables on the measurement accuracy is according to DIN EN 62053-21
1
)
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Conductor cross section for L1, L2, L3 and N
Solid core
0.5 mm2 – 1.5 mm2
Insulation length
10 mm
Fine-wired with insulated wire end ferrule
0.5 mm2 – 1 mm2
Conductor cross section for A(+), B(-), GND
Fine-wired with insulated wire end ferrule
0.25 mm2
6 Safety instructions
The safety and warning instructions here and in further chapters of the manual must be respected to avoid health
endangerments, dangerous situations and system damages.
GMC-I Messtechnik GmbH, is not liable for damages and results due to:
• Connection and / or installation errors.
• Use of violence, damages of the device and / or of the connection leads.
• Damages of the devices due to mechanical influences and / or excess voltage.
• Each and any modification of the device and / or the connection leads.
• Use for other purposes than those described in this manual.
• Exposure to liquids and / or insufficient ventilation.
• Unauthorized opening of the device. This, amongst others, results in warranty loss.
• Consequential damages resulting from non-intended use.
The metering system is laid out for operation under voltages bigger than 50V.
These voltages mean life danger due to dangerous body strikes / electric shock.
These safety instructions must be respected:
• Only qualified licensed electricians can carry out works on the electric device.
• Immediate life danger, when touching current leading parts.
• Damages of the insulation or of single components can be life-endangering.
• In case of damaged insulation (housing), the currency supply has to be immediately turned off and the damaged
part must be replaced.
• Prior to working on electric devices, switch to not energized and check that there is no current.
• Prior to maintenance, cleaning and repair works, turn off the power supply and secure it against newly turning
on.
• Do not override and set out of order any fuse / circuit breaker.
• Protect ENERGYSENS from water.
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Environment conditions
Storage temperature
-20°C - +65°C
Operation temperature
-20°C - +55°C
Height
max. 2000m over MSL
Humidity
max. 90% non-condensing
Place of operation
Only internal spaces
Safety
Protection class
II
Installation category
300V CAT III
Contamination level
2 Max. work conditions of voltage input for N entry
Supply voltage (L1)
230V +/- 10%
Metering voltage (L2, L3)
0 – 230V + 10%
Max. work conditions of voltage inputs
Current measurement
0 – I
+ 10%
Max. work conditions of RS485 interface
Put down under standard ANSI/TIA/EIA-485-A-98
Max. work conditions for Ethernet interface
Put down under standard IEEE 802.3 Clause 25 und TIA-568A/B
Max. work conditions for Sensorbus interface
This proprietary interface must only be used to connect with sensors in the ENERGYSENS metering
system.
nom
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The voltage entries L1, L2, L3 must be secured by 1A, release characteristic B
The installation of the sensors, the flat ribbon cable and the base has to be done
A minimum distance of the flat ribbon cable to the current leading parts of the device
Protection class II
circuit breakers.
A method has to be provided, to switch the device volt-free, e.g. a distinctly marked
interrupter.
behind a cover panel and in such a way to ensure that only qualified licensed
electricians can access the sensors, the flat ribbon cable and the connecting
terminals without removing the cover panel. The cover panel has to be clearly
marked that open, dangerous, current leading parts are behind the panel.
Alternatively, all components of ENERGYSENS can be installed in such a way that
only qualified licensed electricians can access them (e.g. electric control cabinet).
must be respected. The blank ends of the flat ribbon cable must be closed by a
shrink hose.
Touch protection is guaranteed by a protective insulation.
ENERGYSENS
90449 Nürnberg • Germany
www.gossenmetrawatt.com
Repair and Replacement Parts Service
Calibration Center and Rental Instrument Service
If required, please contact:
GMC-I Service GmbH
Service-Center
Thomas-Mann-Strasse 20
90471 Nürnberg • Germany
Phone +49 911 817718-0
Fax +49 911 817718-253
E-Mail service@ gossenmetrawatt.com
www.gmci-service.com
This address is only valid in Germany.
Please contact our representatives or subsidiaries for service in other countries.
Product Support
If required, please contact:
GMC-I Messtechnik GmbH
Product Support Hotline
Phone +49 911 8602-0
Fax +49 911 8602-709
E-Mail support@ gossenmetrawatt.com
* DAkkS Calibration Laboratory for Electrical Quantities D-K-15080-01-01
accredited per DIN EN ISO/IEC 17025
Accredited measured quantities: direct voltage, direct current values, DC resistance, alternating voltage, alternating current
values, AC active power, AC apparent power, DC power, capacitance, frequency and temperature
Edited in Germany • Subject to change without notice • A pdf version is available on the Internet
GMC-I Messtechnik GmbH
Südwestpark 15
Phone +49 911 8602-111
Fax +49 911 8602-777
E-mail info@gossenmetrawatt.com
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