Gossen MetraWatt ENERGYSENS User manual

Operating Instructions
ENERGYSENS
Power Measurement for Energy Data Management 3-349-974-03
1/12.17

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TABLE OF CONTENTS
1Outline................................................................................................................................................................... 4
2Installation............................................................................................................................................................ 5
3Software 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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4Glossary ..............................................................................................................................................................30
5Technical data.....................................................................................................................................................32
6Safety instructions.............................................................................................................................................33

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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.
.
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

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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).
Slider

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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 mm2– 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.
Power supply

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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.
Detached power supply line
Power supply line in metering points

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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.
Upper part
Bottom part
Wide side
Narrow side

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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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3 Software and Communication
Zentraleinheit
Sensor Sensor
Sensor
Modbus
Sensorbus
(Flachbandkabel)
Systemgrenze
iPSensor
Service Tool
Energy
Management
Software
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:
Startbits
1
Stopbits
1
Parity
Even
Baudrate
115.2 KBaud
The ENERGYSENS Service Tool sets the required parameters for the serial interface itself.
Basismodul
ENERGYSENS

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The picture shows the communication interfaces of the base.
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
A (+)
Ethernet
interface
RS485
interface
GND
B (-)

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The termination of the RS485 interface in the device corresponds with this wiring:
1 KΩ 120 Ω 1 KΩ
+5V
GND
A (+)
B (-)

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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.
Free sensor places and
already assigned
sensors
Sensors not yet
assigned
Configurations
for Base

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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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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:
State
Description
Display blinks green
The sensor has not yet synchronized with the base.
The blue LED on the sensor blinks rapidly.
Display blinks yellow
The sensor has not started the application because it is defective. A new
application has to be loaded into the sensor
Display blinks red
The sensor no longer responds to the sensor bus
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.