CARLO GAVAZZI VMU-C EM Instruction Manual
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CARLO GAVAZZI VMU-C EM Instruction Manual

Web server system for energy monitoring
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VMU-C EM
Web Server system for energy
monitoring
Instruction manual
Version A6

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Summary of Contents for CARLO GAVAZZI VMU-C EM

  • Page 1 VMU-C EM Web Server system for energy monitoring Instruction manual Version A6...

  • Page 2: Table Of Contents

    ALARM CONFIGURATION ON VMU-P MODULES ..............60 VMU-O MODULE OUTPUT MANUAL COMMAND CONFIGURATION ........... 62 CONFIGURATION OF THE VMU-M EM MODULES ..............63 CONFIGURATION OF THE VMU-C EM MODULE ................. 65 SENDING THE SYSTEM CONFIGURATION .................. 67 3.7.1 RESUME (SYSTEM) CONFIGURATION ................... 68 3.7.2...
  • Page 3 VMU-C PLANT DATA CHARTS ........................83 ENERGY DATA ......................... 84 6.1.1 MAIN METER ........................84 6.1.2 ENERGY METERS (PARTIAL) ....................87 COUNTERS (GENERIC FROM DIGITAL INPUTS) ................88 TRENDS ........................... 92 6.3.1 Trends Editing ........................92 6.3.2 Trends Displaying ........................ 94 REAL TIME VARIABLES ......................

  • Page 4: Installation

    The software and all the components needed for panel operation require no installation of additional software components. PACKAGE CONTENT VMU-C EM is supplied in its package, along with the following items:  VMU-C Web Server  Installation manual...

  • Page 5: Technical Features

    VMU-C TECHNICAL FEATURES VMUC-EM is micro PC, totally fanless and without any moving components, providing WebServer functions; thanks to the use of industrial hardware, to its extremely small size and to its low energy consumption it is ideal for monitoring applications requiring features like sturdiness and reliability along time;...

  • Page 6: Installation And Connections

    VMU-C Fig. 1 – Eos-Box dimensions INSTALLATION AND CONNECTIONS To install VMU-C EM you need to perform the following steps:  Connect the DC 24Vdc power supply (12Vdc to 28Vdc) through an appropriately sized feeder (recommended feeders: CG, SPM or SPD series) ...
  • Page 7 Connect the GPRS/EDGE/UMTS/HSDPA modem by means of the VMU-W module through inner bus (optional). Once power is supplied to the VMU-C EM, the following LEDs will light up on the front panel: green “ON” LED (indicating the machine is powered), orange “BUS” LED (indicating inner BUS activity), orange “COM1”...

  • Page 8: General Overview

    Internet – through any PC or device equipped with a common Internet browser. As VMU-C EM is based on the Web technology, it can be used as an ordinary Web site; the data and status display function for the devices installed in the plant (analysers, meters, environmental sensors) is based on the innovative AJAX technology, allowing to send and receive information without having to reload the graphical pages.
  • Page 9 VMU-C The system will display the following access page: Fig.– System access page Clicking the “SIGN-IN” button will access the Login page. The following are the default username and password: Username Password Name Level admin admin admin administrator To prevent any undesired access to the system, we recommend that you change the default password, particularly if you use Internet connectivity.

  • Page 10: Home Page

    VMU-C HOME PAGE The figure below shows the VMU-C EM home page: Lh frame Main menu Home Page In particular, we have highlighted the following items, which are always available while using the software: Main Menu : it includes the "Navigation Menu"...
  • Page 11 Rh frame: from the top:  Log-off button Click the button to log off of the VMU-C EM and return to the access page.  Username  PC's date and time.
  • Page 12 VMU-C Value of the line voltages for the system and for the star voltages (phase1n, phase2n and phase3n). These values concern the reference instrument (real or virtual). If the reference instrument is virtual, each voltage value shown to the side is calculated as the average of all the relevant voltages of the real instruments set as contributors.

  • Page 13: Navigation Menu

    Setting (Only available for Administrator users) It allows to access the system configuration menu. Account (Only available for Administrator users) It allows to access the Account management question. Help It opens the online Help remotely hosted on Carlo Gavazzi’s servers VMU-C Instruction manual...

  • Page 14: Settings

    VMU-C SETTINGS Click on the “Configuration” icon in the Navigation Menu (Fig. 6) to access the whole system Configuration section. System Settings Three main configuration menus (SYSTEM, PLANT and OTHER VARIABLES) will be displayed on the screen: SYSTEM CONFIGURATION Clicking on the “SYSTEM” menu will display the following sub-menus: VMU-C Instruction manual...

  • Page 15: Plant Data Setting

    VMU-C 3.1.1 PLANT DATA SETTING Accessing the “PLANT DATA” menu will open the plant description page. 3.1.1.1 DESCRIPTION SETTING Clicking on the “DESCRIPTION” menu will display the main page providing a plant description: Plant Data Configuration The “Plant description” section (see the hatched area “A”) allows to enter the general plant data (name, location, date of installation, …) to simplify the management of the plant itself.
  • Page 16 “T1”. Note: any rime periods not included in tariff “T1” will be automatically included in tariff T2. For holidays, the T2 tariff shall always be used. Press “Save setting” to store the data into VMU-C EM. VMU-C Instruction manual...

  • Page 17: Lan Setting

    “255.255.255.0” as the network mask. The default gateway is only mandatory if you plan to access VMU-C EM through the Internet using the LAN connection; in this case, indicate in this field the IP address of the ADSL router.
  • Page 18 To synchronise the date and time settings through the NTP service (if configured). Note: to ensure that VMU-C EM is accessible from the outside through a LAN connection, it needs to be appropriately re-routed to the ADSL Modem or Router (NAT- Port forwarding) to which it is connected. The ports to be re-routed are: 80 and 52325.

  • Page 19: Ntp Server Setting

    VMU-C Dynamic public IP address management The service will be available after about 6 minutes. Note: Resorting to this service is often necessary when the Internet connection is established through a GPRS/UMTS modem or when you don't have any static IP address on your ADSL line. Mobile providers typically don't provide a static IP address.

  • Page 20: Dp Service Setting

    -Server and VMU-Y documentation for information about those systems. Both Em -Server and VMU-Y allow users to build distributed systems where VMU-C EM is a gateway in a charge of gathering data from the plant and route information to a centralized database (Em...
  • Page 21 VMU-C 3.1.4.1 DP SERVICE SETTINGS By selecting the Setting submenu it is possible to access the DP Service configuration page. DP Service configuration The parameters to set to successfully join the Em -Server /VMU-Y are: Parameter Description Server Address It is the internet address of the Em -Server / VMU-Y GPS coordinates The GPS coordinates of the VMU-C;...
  • Page 22 VMU-C VMU-C’s configuration)  Command request (to force VMU-C to check if there are any pending commands on Em -Server /VMU-Y) Save setting To save the configuration Notes: 1) It is always advisable to fully finalize the VMU-C configuration before sending it to Eos-Server 2) VMU-C can successfully join Em -Server only if the necessary license plan has...

  • Page 23: Ftp Service Configuration

    VMU-C 3.1.5 FTP SERVICE CONFIGURATION By clicking on “FTP SERVICE” the following 3 sub-menu are presented: 3.1.5.1 AVAILABLE COMMUNICATION PROTOCOLS Two different protocols are available in the FTP section: a) FTP – Push: it works by uploading files to a remote server upon a preconfigured schedule b) HTTP –...
  • Page 24 VMU-C  “Enable FTP Service”: to be checked to enable data communication (both by FTP-push and HTTP-pull); both HTTP-pull and FTP-push are available at the same time. In the case FTP communication is needed, the following fields must be completed: ...

  • Page 25: Modbus Tcp

    VMU-C 3.1.6 MODBUS TCP Clicking on “MODBUS TCP” will display a sub-menu, “SLAVE”, which allows setting the MODBUS TCP communication through the Ethernet port. Fill in the fields according to the following specifications:  “Modbus TCP Enabling”: check the relevant box to enable this function. ...
  • Page 26 VMU-C Press the “Create map” key to save the modifications and create the Modbus TCP map in VMU-C. Press the “Export PDF map” or “Export XML map” to create the map in PDF format or as an XML files to be exported to implement the Modbus TCP map in the relevant master. Press the “Reset TCP map”...
  • Page 27 3.1.6.3 Notes about Modbus TCP Mapping in VMU-C EM The data format is IEEE754 (even if differently managed by the meter, e.g. INT 32) for all the instantaneous variables; it is INT64 with 0,1 kWh (or m3) resolution for all the meters or utility counters.

  • Page 28: The Vmu-W Modem

    VMU-C 3.1.7 THE VMU-W MODEM 3.1.7.1 INSTALLING AND CONFIGURING THE VMU-W MODEM Connecting the VMU-W module To connect the Modem (VMU-W) to VMU-C you will have to perform the following steps:  Make sure the VMU-C and the VMU-W are not powered. ...
  • Page 29 VMU-C By clicking on “MODEM” it is possible to access the configuration of the parameters which allow VMU-W based communication. It is needed to complete all the fields from the following form: Modem configuration The web page includes 5 areas: a) MODEM CONNECTION STATUS ...
  • Page 30 VMU-C 3.1.7.2 MODEM WATCHDOG Modem Watchdog It is possible to overcome common issues in mobile communication by means of 3 different mechanisms: 1) Ping Reboot: if enabled, VMU-C + VMU-W sends a PING to the defined IP address (to be chosen as a reliable always ON server on Internet). In the case of repeated lost answer from the PING, the system reboots 2) Scheduled reboot: the system reboots each interval time (chosen in the relevant parameter field)
  • Page 31 VMU-C to the calling phone (DATA MODEM OFF Public IP inquiry IP PASSWORD Password defined by the (e.g. IP 1234) user in the relevant section in the page above; the system sends the IP address by SMS to the calling phone VMU-C Instruction manual...

  • Page 32: Alarm Sending Configuration

    VMU-C 3.1.8 ALARM SENDING CONFIGURATION Clicking on “ALARMS” will grant access to the page shown below. Outgoing mail configuration VMU-C can send alert emails and/or SMS to more recipients at the same time and according to predefined rules. This page contains two separate configuration screens, in order to create two separate users groups to send communications to.
  • Page 33 VMU-C  “Commands”: Change of parameters on Eos- Array VMU-C Instruction manual...

  • Page 34: Planning Configuration

    “Test Mail”: Press this key to receive a test e-mail at the email addresses specified in “Recipients addresses” field. Note: if the e-mail is not received, check outgoing mail server settings, recipient address, VMU-C EM reachability from Internet. “Send Plant Data”: Check email sending period. ...
  • Page 35 VMU-C “Daily” file format  “Weekly”: an .xls file containing the consumption data of each day of the week that just ended is sent at 11:59 p.m. of each Sunday. The file will have the following structure for the AC data and similar for the DC data: “Weekly”...
  • Page 36 VMU-C  “Yearly”: on December 31st at 11:59 p.m., a .xls file is sent with the consumption data (individual month definition) for every day of the year. The file will have the following structure for the AC data and similar for the DC data: “Yearly”...

  • Page 37: E-Mail (Outgoing Mail Server) Configuration

    Outgoing mail configuration The outgoing mail server configuration is necessary to send alarm or history data e-mails from the plant. If configuration is incomplete or incorrect, VMU-C EM cannot send any communications by e-mail. Fill in the fields according to the following specifications: ...

  • Page 38: Updating The Vmu-C Firmware

    VMU-C will display the above window again, replacing the “Browse” caption with “OK” (the update file must be obtained from the Carlo Gavazzi technical support. Pressing the “Load” button will open a window prompting user to confirm the firmware update operation.
  • Page 39 The automatic update is managed by the following subsection of the main Firmware Update page: Automatic update The process is menu – driven, and it is thus error-proof; the three steps are: Button Action Check Checks if a new updating package is ready on Carlo Gavazzi’s servers VMU-C Instruction manual...
  • Page 40 3.1.11.3 FIRMWARE UPDATE – SERVER SETTINGS After having been officially authorized by Carlo Gavazzi, an user could setup a firmware update server in its own IT infrastructure. This is useful in the case of complex organizations needing to apply special firmware deployment policies.
  • Page 41 VMU-C Note: setting up a custom FTP repository needs special training on the relevant procedures to allow firmware package deployment. Please contact Carlo Gavazzi Support for further information. VMU-C Instruction manual...

  • Page 42: Tools

    VMU-C 3.1.12 TOOLS The TOOLS menu By the tools menu it is possible to: a) Reboot VMU-C b) Setting up Time and Date c) Resetting VMU-C 3.1.12.1 VMU-C REBOOT VMU-C can be restarted through the “REBOOT” button. After issuing the command you will be prompted to confirm that you wish to proceed, then a countdown will displayed.
  • Page 43 VMU-C Note: during update and restart, web pages can show error messages as VMU-C cannot be temporarily reached. Wait for a few seconds before restoring connection. 3.1.12.2 DATE,TIME AND VMU-M CONFIGURATION By pressing the “Set” button you can set the VMU-C internal date and time on all the VMU-M devices connected to VMU-C.
  • Page 44 VMU-C 5) Restore Factory Settings: it performs the reset operations described at point 4; it also resets all the settings like IP address, SMTP server and alarm management by e-mail (if a memory card has been installed in VMU-C, it is not affected by the Reset command).

  • Page 45: Language Setting

    “Decimal Separator” box allows the choice between “.” and “,” as decimal separator in all the file which will be exported by VMU-C. Language setting You will also have to provide the following information: Geographic area City This information is required for time management inside VMU-C EM. VMU-C Instruction manual...

  • Page 46: Plant Configuration

    VMU-C 3.2 PLANT CONFIGURATION Hovering the mouse over “PLANT” will display a drop-down menu consisting of three items: “COM SETUP” , “DRIVER” and “SETTING” Plant Configuration Menu 3.2.1 COM SETUP Hovering the mouse over “COM Setup” will grant access to the page shown below, relevant to COM1 port according to the relevant RS485 parameters.

  • Page 47: Drivers

    Hovering the mouse cursor over “DRIVERS” will display two items: LIST and IMPORT.  Clicking the LIST item will grant access to the page shown below listing (in alphabetical order) all the drivers of the compatible energy meters in VMU-C EM. Driver list Driver Import Clicking on the "IMPORT"...

  • Page 48: Plant Setting

    VMU-C 3.2.3 PLANT SETTING When hovering the mouse over “Setting”, the system will display the two items WIZARD and SAVE CONFIGURATION . If the VMU-C configuration has already been completed, clicking on the SAVE CONFIGURATION item will allow to export it to a file with “DB” extension and to save it to one's PC, allowing it to be uploaded to the present or different VMU-C at a later time.
  • Page 49 COM1 port and for the COM Aux port of the VMU-C EM. If all the devices connected to the ports (COM1 e COM Aux) have been detected, you can stop the automatic scanning procedure through the “Stop scanning”...

  • Page 50: Configuration Of The Vmu-O Modules (Vmu-O Em)

    CONFIGURATION OF THE VMU-O MODULES (VMU-O EM) If during the “device auto-detection” stage one or more VMU-O modules have been identified (there may be up to 3 VMU-O modules for each VMU-C EM e/o VMU-M EM), the system will display the screen shown below .
  • Page 51 The system will automatically display the information concerning the source base module (VMU-C EM or VMU-M EM) and the location of the VMU-O module within the system. Indicate for each of the two outputs (Output1 and Output2) the function to be applied...

  • Page 52: Energy Meter Configuration

    VMU-C 3.2.5 ENERGY METER CONFIGURATION Clicking on the “Next” button again from the “Manual setup” page will grant access to the Energy Meter configuration page Energy meter configuration 3.2.5.1 ENERGY METER ADDITION Clicking on the “Add” button will display the mask allowing to select the configuration model .
  • Page 53 Energy meter COM 2 communication enabling: it enables the serial communication of the instrument with VMU-C EM d) Define as main meter: the instrument being configured will be considered as the reference main instrument (there can be a main meter for AC energy and 1 main meter for DC energy).
  • Page 54 Enable contribution to the virtual main meter: if no main instrument has been defined (from the configured instrument list), VMU-C EM will automatically create a virtual instrument (one for AC energy and one for DC energy). It will represent the sum of all the real instrument having this option enabled.
  • Page 55 VMU-C alarm configuration page The following fields need to be configured for each alarm:  Enabled variables: from the drop-down menu you can choose a variable among the ones included in the list displayed by the system: Enabled variables In case of DC energy meter, the available variable list is limited to current, voltage, power and DC energy.

  • Page 56: Counters Configuration

    Position …. : this option will only be available when there is at least a VMU-O module connected to the internal bus of the VMU-C EM and at least one of the two available outputs is set for remote control. When the alarm threshold is overstepped, the alarm message will be sent, and in addition the status of the selected digital output will change.
  • Page 57 VMU-C  Description: label to be assigned to the Meter (like GAS Meter, WATER Meter, etc.) for easier searching.  Engineering units: the engineering unit referring to the digital input meters.  Decimal position: number of digits after the point. The point position is defined by the instrument.

  • Page 58: Energy Meter Deletion

    Press ‘YES’ to confirm deletion or “NO” to cancel. If you press “YES” the Energy Meter will be removed from the Inserted Meter list. All data acquired from VMU-C EM up to that moment on the deleted Energy Meter will be definitively eliminated.

  • Page 59: Vmu-P Module Configuration

    VMU-P module configuration mask In the area marked by the dots the system will automatically display the information concerning the source base module (VMU-C EM or VMU-M EM) and the location of the VMU-P module within the system. Specify for each module which temperature measurements shall be monitored (Temperature of channel1, of channel 2 or both) and the type of sensor to be used (Pt100 or Pt1000 probes, 3 wires or 2 wires).

  • Page 60: Alarm Configuration On Vmu-P Modules

    VMU-C 3.3.1 ALARM CONFIGURATION ON VMU-P MODULES Each VMU-P module can manage specific alarms for each of the monitored dimensions :  Channel 1 temperature  Channel 2 temperature  Analogue input (mV or mA)  Pulse rate input VMU-P alarm configuration mask For each alarm you can define the activation thresholds and the relevant usage mode: Rising alarm: Threshold1 ≥...
  • Page 61 VMU-C Analogue input alarm configuration mask  Maximum value of measuring electric scale (Hz): conversion parameter used to obtain the measurements from the frequency input (pulse input). This value represents the maximum frequency value the sensor can generate.  Maximum value of displayed scale (expressed in the engineering unit specified above): Scaled value corresponding to the maximum value of the frequency signal.

  • Page 62: Vmu-O Module Output Manual Command Configuration

    VMU-C 3.4 VMU-O MODULE OUTPUT MANUAL COMMAND CONFIGURATION Pressing the “NEXT” button again will grant access to the screen allowing to configure the manual commands of the relay outputs on the VMU-O modules . Through this function, by using a manual command, you'll be able to remotely activate or deactivate (via Ethernet/through the Internet) the digital outputs of the VMU-O modules installed on-field.

  • Page 63: Configuration Of The Vmu-M Em Modules

    3.5 CONFIGURATION OF THE VMU-M EM MODULES Pressing the “NEXT” button again will grant access to the screen allowing to configure the VMUM-EM modules connected to VMU-C EM. VMU-M module configuration mask  Besides the label defined above, the top section displays the ModBus address for the specific VMU-M EM module.
  • Page 64 VMU-C Other alarms group configuration mask Note: should VMU-C EM find that the VMU-M EM programming is inconsistent with the modules connected to it, you may choose whether the error should not be managed or whether an alarm should be activated on a physical output.

  • Page 65: Configuration Of The Vmu-C Em Module

    VMU-C 3.6 CONFIGURATION OF THE VMU-C EM MODULE Pressing the “NEXT” button again will grant access to the screen allowing to fully configure the VMU-C EM module. VMU-C EM configuration mask The paragraphs below describe the individual pages allowing to configure the available functions: ...
  • Page 66 VMU-C  OTHER ALARMS GROUP (VMU-C EM): this section allows to configure the Other general alarms (Fig. 63): o Communication Alarm on Port COM1 and/or COM2: should a device connected to the COM1 and/or COM2 communication ports stop communicating for more the 30 sec. (if set), the system will trigger the alarm.

  • Page 67: Sending The System Configuration

    Once system configuration is completed, the system will display the relevant screen (Fig. 64): all data can be loaded into the MASTER VMU-C EM module. Only after the user has issued the “Send plant data” command shall the data be operational.

  • Page 68: Resume (System) Configuration

    VMU-C 3.7.1 RESUME (SYSTEM) CONFIGURATION If you exit the setup wizard before it is completed, you'll be able to resume the procedure through the “Resume configuration” command Resume configuration 3.7.2 IMPORT (SYSTEM CONFIGURATION) If the configuration of a plant has been exported using the “SAVE CONFIGURATION” command , Configuration export command you can import the configuration using the “IMPORT”...

  • Page 69: Other Variables" Setting

    3.8 “OTHER VARIABLES” SETTING When hovering the mouse over “OTHER VARIABLES” the system will display a drop- down menu showing the list of the variables which can be managed by VMU-C EM through the VMUP-EM module(s): ANALOGUE INPUT measurements (“mV” and/or “mA”); 1 channel TEMPERATURE measurements (from Pt100 and/or Pt1000, 2 or 3 wires);...
  • Page 70 VMU-C You can define for each sensor a description which will help you identify, during reading, the sensor from which the measurement comes. The system will also display the following details: o VMU-M address (or VMU-C address): ModBus address of the VMU-M or VMU-C module the sensor is connected to;...

  • Page 71: Home Page

    VMU-C HOME PAGE Clicking on the “Home” icon in the Navigation menu will grant access to the screen showing the trend of power absorbed by the system during the current and the previous days, with a 5-minute sample resolution. Home page The chart can be displayed in “Line”...
  • Page 72 VMU-C System weekly “AC” power System Monthly “AC” power  Print chart By clicking on the Print button located in the lower right corner of the chart area, you can select which printer shall be used to print the chart. VMU-C Instruction manual...

  • Page 73: Monitor - Meter Data Analysis

    VMU-C MONITOR - METER DATA ANALYSIS This section is devoted to the meter data analysis and allows to display in the main chart the trend of the main variables, like Current/Power Factor for each individual phase, System voltage (star and line), Power (active and reactive system power), analogue variables like Temperature, signal from pulse and analogue input (when available and anyway coming from VMU-P EM modules).
  • Page 74 VMU-C Trend Variables Active Power (system) Reactive power (System) kvar kvar1 Kvar2 kvar3 Active Power (system) Reactive power (System) Analogue variables VMU-P environmental variables (note that disconnected environmental channels are marked with an asterisk) a) Graphic functions Charts consist of an X-axis, showing day hours from 00:00 a.m. to 11:55 p.m., and of as many Y-axes as the number of dimensions to be shown.
  • Page 75 VMU-C Note: If chart is not displayed and a white area with the caption “No data to display” appears, it means that no data is available for the selected day. VMU-C Instruction manual...

  • Page 76: Currents" Chart

    VMU-C 5.1 “CURRENTS” CHART Main meter Currents chart (AL1, AL2 and AL3) The chart displays the three phase currents. These currents refer to the instrument of choice (real or virtual according to the system configuration settings). Data may be displayed on a daily, monthly or yearly basis. Note: in charts the sampling frequency (current values for each phase), depends on the storage interval set on VMU-C, which must be equal to 5,10,15,30,60 minutes.

  • Page 77: Power Factors" Chart

    VMU-C 5.2 “POWER FACTORS” CHART Power factors chart (for each individual phase) The Chart allows to compare the 3 individual phase Power Factors (PF1, PF2 and PF3), the system PF and frequency. These values refer to the instrument of choice(real or virtual according to the system configuration settings).

  • Page 78: Voltages" Chart

    VMU-C 5.3 ”VOLTAGES” CHART Voltage trend chart The Chart compares the 2 voltage sets of data (VLNsys: star system voltage and VLLsys: line system voltage). These values refer to the instrument of choice (real or virtual according to the system configuration settings).

  • Page 79: Power" Chart

    VMU-C 5.4 “POWER” CHART System power trend chart (kW and kvar) The chart compares the 2 system power magnitudes (kW: active system power; kvar: reactive system power). These values refer to the nstrument of choice (real or virtual according to the system configuration settings).

  • Page 80: Analogue Variables" Chart

    This selection allows to set whether the displayed variables belong to the VMU-P directly connected to the VMU-C EM or to one of the VMU-M EM connected by RS485 to the VMU-C EM itself. Variables relevant to disconnected sensors are marked with an asterisk and not shown by default.
  • Page 81 VMU-C Note: the sampling frequency in charts (analogue variables, temperature and pulse signal), depends on the storage interval set on VMU-C, which may be equal to 5,10,15,30,60 minutes. VMU-C Instruction manual...

  • Page 82: Dc Main Meter Charts

    VMU-C 5.6 DC MAIN METER CHARTS By the selection AC/DC put on the top right of the page the display can be changed from the AC main meter (virtual or real) to the DC main meter (virtual or real). In this case the only available graph compares the 3 DC main variables: voltage, current power.

  • Page 83: Plant Data Charts

    VMU-C PLANT DATA CHARTS This section displays in graphical form all the data acquired by VMU-C EM and read by the different devices (energy meters and VMU-P modules for analogue variables). Click on the “Plant” icon in the Navigation menu to access the following page :...

  • Page 84: Energy Data

    VMU-C 6.1 ENERGY DATA Hovering the mouse cursor over “ENERGY DATA” will display the items “MAIN METER AC”, “ENERGY METERS AC”, “MAIN METER DC”, “ENERGY METERS DC” . 6.1.1 MAIN METER The power/energy curve represents the sum of all the contributions from the energy meters (EM), respectively AC or DC, monitored by the system in the selected time interval.
  • Page 85 VMU-C  Daily: it shows the daily trend of power or energy on the selected day. (To choose the day use the special calender which can be accessed through the button next to the date field)  Monthly: it shows the average daily power or the total measured energy, for each day of the selected month.
  • Page 86 VMU-C In the top left of this section there is a menu allowing to select the graphical display mode: "Line" (a continuous line) or "Bar" (for histograms). Note: we recommend that you use the “Line” display for the daily Power data and the "Bar"...

  • Page 87: Energy Meters (Partial)

    VMU-C 6.1.2 ENERGY METERS (PARTIAL) Hovering the mouse cursor on “ENERGY DATA” and selecting the “ENERGY METERS” item will grant access to a window displaying the daily trend of the power measured by each energy meter of the plant. Each curve has a different colour and can be identified by the legend on chart bottom.

  • Page 88: Counters (Generic From Digital Inputs)

    VMU-C  The list of all the names assigned to the energy meters included in VMU-C EM; when selecting an individual meter, only the relevant curve will be displayed.  The “ALL” item, allowing to simultaneously display all the energy meters configured and existing in the plant.
  • Page 89 VMU-C As soon as the user accesses the page, the system displays the daily trend of the monitored meters installed in the specific plant. To simplify the identification of each individual track, every individual curve/line has a different colour and can be identified through the legend in the bottom section of the chart.
  • Page 90 VMU-C Note: all keys and selections outside the dark grey area do not need the “Refresh chart” function. After a few moments the chart will refresh automatically. VMU-C Instruction manual...
  • Page 91 VMU-C “Section B”, displaying in graphical form the trend of the different meters from the digital inputs. On the abscissa axis (X) the chart displays the time references; the relevant resolution (hours, days, months) depends on the selected display type (daily, monthly, annual).

  • Page 92: Trends

    VMU-C 6.3 TRENDS 6.3.1 Trends Editing Customized trends management page By means of the “TREND” submenu it is possible to create and save customized trends of groups of variables chosen from the available set. Any mix of variables from any energy meter or VMU-P module may be chosen.
  • Page 93 VMU-C Customized trends management page - Modify By the “Modify” page it is possible to: Function How to By means of the “Label” field Add a new Name to the customized trend By means of the “Instrument” drop-down Select an Instrument list (Disabled instrument are marked with an asterisk) By means of the “Module”...

  • Page 94: Trends Displaying

    VMU-C 6.3.2 Trends Displaying Customized trends management page - CHARTS By choosing CHARTS in the TRENDS menu it is possible to display the trend of choice. Trend selection is made by the DESCRIPTION drop-down list VMU-C Instruction manual...

  • Page 95: Real Time Variables

    VMU-C 6.4 REAL TIME VARIABLES Hovering the mouse cursor over “REALTIME VARIABLES” and then over “ENERGY METERS AC” or “ENERGY METERS DC” will grant access to the following screen: Page for real-time variable reading Section A Section B VMU-C Instruction manual...
  • Page 96 VMU-C This page consists of two sections: A. “Section A”, on the TOP, allowing to make searches and to select the refresh time.  Energy meter name: select the instrument from which you wish to read the variables in real time. ...

  • Page 97: Other Variables

    VMU-C 6.5 OTHER VARIABLES Hovering the mouse cursor over “OTHER VARIABLES” will display the following screen: "Other variables" menu 6.5.1 ANALOGUE INPUT As soon as the user accesses the “ANALOGUE INPUT” page, the system will display the data from the VMU-P EM modules, and more precisely from the “mV” or “mA” inputs of the module itself.
  • Page 98 On the ordinate axis (Y) the chart shows the scaled value for the monitored value (with auto-range function). Two display types are available: “Line” track or “Area” track. Note: in daily charts the sampling frequency depends on the storage interval set on VMU-C EM; it can be: 5,10,15,30,60 minutes. VMU-C Instruction manual...

  • Page 99: Temperature

    VMU-C 6.5.2 TEMPERATURE As soon as the user accesses the “TEMPERATURE” page, the system displays the data coming from the VMU-P EM modules, and more precisely from the inputs for temperature measurement (from Pt100 and/or Pt1000) of the module itself. Accessing this page will display the daily trend of the variable monitored by the above- mentioned analogue input.

  • Page 100: Pulse Rate Input

    (with auto-range function). Two display types are available: “Line” track or “Area” track. Note: in daily charts the sampling frequency depends on the storage interval set on VMU-C EM. It can be: 5,10,15,30,60 minutes. 6.5.3 PULSE RATE INPUT As soon as the user accesses the “PULSE RATE INPUT” page, the system displays the data coming from the VMU-P EM modules, and more precisely from the inputs for digital input measurement (for frequency/speed measurement) of the module itself.
  • Page 101 On the ordinate axis (Y) the chart shows the scaled value for the monitored value (with auto-range function). Two display types are available: “Line” track or “Area” track. Note: in daily charts the sampling frequency depends on the storage interval set on VMU-C EM. It can be: 5,10,15,30,60 minutes. VMU-C Instruction manual...

  • Page 102: General Chart Features

    VMU-C GENERAL CHART FEATURES 7.1 ZOOM FEATURE You can use the ZOOM function in any Chart display page, it allows you to zoom a particular area of the graph for further analysis. The ZOOM function is fast and easy. The picture below shows the sequence of operations to perform: Example of a graph that you want to further analyze.

  • Page 103: Refresh Feature

    VMU-C Zoomed area The zoom function is available for all chart types (histogram and area charts). By the RESET ZOOM button it is possible to come back to the initial scaling. 7.2 REFRESH FEATURE By the refresh button, available in each chart in bottom-left position, it is possible to refresh the displayed view 7.3 PRINT FEATURE...
  • Page 104 VMU-C VMU-C Instruction manual...

  • Page 105: Alarms

    Clicking on the “Alarm” icon in the Navigation menu will grant access to the alerts content Alarms This table shows the list of alarms stored in VMU-C EM in chronological order, starting from the most recent. Note: alarm classification cannot be changed by user.
  • Page 106 2. “Message”: alarm description. 3. “Description”: name assigned to the device during configuration. 4. “Module”: address of the primary device (VMU-C EM or relevant VMU-M EM or Energy Meter) and position of the secondary device (VMU-P or VMU-O) in alarm.

  • Page 107: Commands

    VMU-C 7. “End date”: date on which the alarm ceased. If alarm still exists, the field will be blank. 8. “End time”: time at which the alarm ceased. If alarm still exists, the field will be blank. 9. “Hide”: if checked, the alarm row will be automatically hidden. Note: To view all alarms, including the hidden ones, check “Show all”...
  • Page 108 VMU-C VMU-C Instruction manual...

  • Page 109: Economic Analysis

    VMU-C ECONOMIC ANALYSIS This section is devoted to the economic analysis of the installation. It allows to calculate the costs of the consumed AC energy. Clicking on the “Economy” icon in the Navigation menu will grant access to the relevant content .
  • Page 110 VMU-C previously set by the user. The value is expressed in the currency set in the setup page. Note: for the four chart types described above, the value expressed on the Y axis must always refer to the cost expressed in the currency set during programming. In the “B”...

  • Page 111: Information

    VMU-C 10 INFORMATION This section displays the data and characteristics of the monitored plant. Clicking on the “Information” icon in the Navigation menu will grant access to the relevant content Plant characteristics There are 2 sub-selections available from the information page: 1.

  • Page 112: Vmu-C Status

    VMU-C 10.1 VMU-C STATUS By this page it is possible to check in real time the main configuration settings relevant to the VMU-C device. VMU-C Status Parameter Description VMU-C Serial Number It is the unique S/N of the VMU-C MAC Address It is the unique MAC address of the VMU- C’s Ethernet port Firmware version...

  • Page 113: Plant Characteristics

    VMU-C 10.2 Plant characteristics Plant characteristics This page consists of three sections: 1. “Description”: it displays the plant identification data (name, place and date of installation, etc. …). 2. “Contract highlights”: for each tariff the section specifies the fixed costs, the unit cost for both active (kWh) and reactive (kvarh) energy, the maximum contract power value for each individual tariff, and finally any additional cost (for each kW), should the maximum contract power be exceeded.

  • Page 114: Data Export

    VMU-C 11 DATA EXPORT This section allows to export the data stored in VMU-C EM to an Excel file. Clicking on the “Export” icon in the Navigation menu grants access the following screen Exporting stored data This area allows to choose the type of data to be exported and the relevant period. To generate the file press the “Export data”...
  • Page 115 (AC or DC energy meters) connected to the VMU-C EM. The instrument whose values have to be exported must be selected from the relevant drop-down menu; also define the type of data to be exported (Average, Maximum or Minimum).
  • Page 116 VMU-C VMU-C Instruction manual...

  • Page 117: Account

    System configuration and Account configuration areas will no longer be allowed. To restore the Administrator user, contact Carlo Gavazzi technical assistance. To know which users are online just refer to the list displayed in the dotted area in Fig.

  • Page 118: Updating An Account

    VMU-C Press the “Add account” button. The following screen will be displayed in the bottom section of the page: add account Fill in the fields according to the following specifications:  “Name”: Name of the user. Note: We recommended that you never assign the same “Name” to two different users.

  • Page 119: Deleting An Account

    VMU-C Modify the settings as already described in paragraph "New account insertion" above, taking into account that the Username field cannot be edited. Press the “Reset” button to cancel the modifications; “Cancel” to cancel the operation. Press the “Save” button to modify the account.

  • Page 120: Data Back-Up

    EM will not enable any writing or reading operation (flap closing is controlled by a micro switch located under the flap). 4. As soon as the flap is closed, VMU-C EM will install the newly inserted memory card and transfer the BACK-UP data. As long as the installation and writing operations are under way, the front “ON”...
  • Page 121 2. Insert the Pen-drive, making sure it is not write-protected and it is properly formatted (FAT32). 3. As soon as you have inserted the Pen-drive, VMU-C EM will install the memory and transfer the BACK-UP data. As long as the installation and writing operations are under way, the front “USB”...
  • Page 122 (fixed and not editable) is 192.168.254.254. To access the VMU-C EM through the mini USB port use a USB => mini USB cable and type through the browser in use the address 192.168.254.254; the log-in page will be displayed again.
  • Page 123 VMU-C If the memory device (micro SD or Pen Drive) is left inserted into VMU-C EM, at 12:00 a.m. o'clock VMU-C adds on a daily basis a new file containing the data of the just expired day (with the same formatting as the previous file).

  • Page 124: Restoring The Configuration From Back-Up (From File)

    VMU-C 13.1 RESTORING THE CONFIGURATION FROM BACK-UP (FROM FILE) If the VMU-C configuration has previously been saved on a PC, it can be re-imported by simply following the procedure described below:  Click on the “SETUP” icon => Click on the “PLANT” button => Click on the “SETTING”...

  • Page 125: Restoring The Data-Base From Back-Up (Disaster Recovery)

    CONFIGURATION RESTORE Performing this operation is equivalent to “Restoring the configuration from back-up”. When an external memory device (Pen-drive or micro-SD) is inserted into VMU-C EM, a copy of the system configuration (Arrays modules and Energy Meters) is automatically created; the copy in question can then be imported through a special command.

  • Page 126: Database Restore (Disaster Recovery)

    13.2.2 DATABASE RESTORE (Disaster Recovery) This operation allows to import into a VMU-C EM the Database of another VMU-C EM (this function can be very useful in case the device should have to be replaced as a consequence of a failure). The “Disaster Recovery” function imports into the new device all the data previously saved in the VMU-C EM which has failed (data-logger + events).

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