Never disconnect the voltage measurement cables or current sensor cables while the instrument is in use. Never take any measurements if the equipment presents any abnormal condition, such as cables with insulation failures or exposed metal parts. MMW04 | 1-1...
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Do not use abrasives or solvents to clean the equipment. Do not store the instrument if it is damp or wet. Failure to follow the instructions above may result in risk of death, serious injury and damage to the integrity of the device. 1-2 | MMW04...
GENERAL INFORMATION 2 GENERAL INFORMATION This manual describes how to install, configure and operate the MMW04 electrical quantity multimeter. To ensure the integrity of the device and its correct use, as well as safety aspects, read it carefully. 2.1 SELF-DECLARATION OF CONFORMITY This is a device produced in compliance with CE.
Measurement of energy consumed and generated in On Grid systems. 3.1 MEASURING ELECTRICAL QUANTITIES The MMW04 measures electrical quantities, voltage and current harmonics and is intended for energy efficiency applications. Next, we will see the measurements taken by the device. 3.1.1 Basics The equipment provides the measurement value of the following basic electrical quantities: True RMS voltage and current values.
3.2 RECEIVING THE PRODUCT The MMW04 leaves the factory packaged to protect it against possible damage during shipment. When you receive it, check that the following items are available. If any item is visually damaged, contact technical support immediately.
IP54 Ventilation fins. Snap on box without the use of screws. 3.3.1 Front Panel The front of the MMW04 is made up of a matrix display and a membrane keyboard for navigation and operation. MMW04 | 3-3...
3.3.2 Rear Panel - Connectors The back of the MMW04 contains connectors for connecting power cables (pins 13 and 14), measuring voltage (pins 1 to 6) and current (pins 7 to 12), for ethernet (RJ-45 ) and RS-485 serial (pins 20 and 21) communication, relay output (pins 16 and 17) and digital input (pins 18 and 19).
Modbus TCP, MQTT and SNTP (through the ethernet communication interface). 3.5 POWER MANAGER In conjunction with the WEG Power Manager desktop software, it is possible to read measurements in real time, download data saved in mass memory, generate reports and update firmware remotely.
INSTALLING 4 INSTALLING This chapter covers some items related to the connection of the MMW04 to the electrical bus (generation or distribution system). Be aware of the system voltage levels. The MMW04 allows direct voltage and current measurements, when the limits do not exceed the equipment capacity, and indirect voltage and current measurement using potential transformers (PTs) and current transformers (CTs).
4.2 POWERING UP The MMW04 does not have a power button. To turn it on, you need to connect the cables to the rear connectors indicated by Vaux and apply a minimum operating voltage, described in the Specifications section. A few seconds after connecting the power terminals to the power line, the equipment will display the product identification screen.
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Figure 4.29: 3P3W-1V1C B - Three-phase 3 wires, balanced delta, 1 PT connection, 1 CT ATTENTION! Note that you must know the system phases to correctly connect the voltage and current measurement cables; otherwise, the phase sequence will be reversed, causing the MMW04 to measure incorrectly. 4-12 | MMW04...
This chapter presents the user interface and basic parameter setting of the equipment. 5.1 NAVIGATION The MMW04 screens are organized into well-defined categories and can be accessed through the device different menus. The menus follow the concept of hierarchical navigation, being accessed by selection and confirmation.
BASIC OPERATIONS 5.1.1 Measurements Menu The MMW04 contains a wide range of energy efficiency measurements, which, for a better screen navigation experience, are linked together in the measurements menu, described below. Through the main menu, select the Measurements (MSR) menu and press Select and confirm Voltage/Current (UI) to access the following measurements: Phase voltages: (True RMS).
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Generated energy: (active, capacitive reactive and inductive reactive). Select and confirm Harmonics (THD) to access the following measurements: Total harmonic distortion: (THD of voltages and currents). Magnitude of harmonic components up to the 31 : (of voltages and currents). MMW04 | 5-3...
BASIC OPERATIONS 5.1.2 Settings Menu The MMW04 concentrates all possible parameter settings in the device settings menu. That allows for more efficient and faster commissioning. Below are the directions to use the submenus. To set parameters, see the Editing Parameters subsection.
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Select and confirm Communication (COM) to access the settings of the following parameters: Modbus address, format and byte swap. RS-485 Serial communication interface. Ethernet communication interface. Select and confirm Password (PWD) to enable or disable a parameter access password. MMW04 | 5-5...
A new screen will be displayed, waiting for the user to confirm the action. 5.1.3 Inputs and Outputs Menu The MMW04 allows automation applications, providing measurement alarms and activations through relay outputs. In the inputs and outputs menu, described below, you can access alarm parameters and outputs and check their current status.
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Output parameter setting: (link of outputs to alarms). Select and confirm Alarms (ALR) to access: Alarm status: (active/inactive alarm indication). Alarm parameter setting: (magnitude, phases, action, pre and post times and alarm zones). MMW04 | 5-7...
BASIC OPERATIONS 5.2 DEVICE PARAMETERS The MMW04 has a range of customizable features to better suit the users’ needs, allowing them to set the user interface, date and time, daylight saving time, as well as providing security features and various communication interfaces.
5.2.2 Date and Time The MMW04 uses the date format as defined in the international standard, as follows: YYYY-MMDD, where YYYY is the year between 2000 and 2099 with four digits, MM is the month between 1 and 12 with two digits, and DD is the day between 1 and 31 with two digits.
5.2.3 Communication The MMW04 provides a Serial RS-485 communication port. This port is used to establish communication between the device and the computer for use in conjunction with the WEG Power Manager desktop software, allowing the user to: 5-10 | MMW04...
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Generate charts and reports directly through the software. In addition to this communication port, the MMW04 has an Ethernet communication port. Both communication interfaces work independently and simultaneously. The communication protocol used to transfer data is Modbus RTU or Modbus TCP, and it is necessary to define the network address to identify the analyzer on the network.
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BASIC OPERATIONS Serial RS-485 The MMW04 has D+ and D- outputs that allow communication via RS-485 interface at a standard baud rate of 19200 bps. This interface uses the Modbus RTU protocol. In the settings menu, select the Communication (COM) submenu, as described in the Navigation section.
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Ethernet interface settings screens. On these screens, the following parameters are set: Port: access port. DHCP: enables automatic IP provisioning. SNTP: enables automatic date and time synchronization. IP: IP address. Mask: subnet mask. MMW04 | 5-13...
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DNS 2: secondary DNS address. NOTE! When DHCP is on, check the WEG Power Manager IP on the device screen or on the tax page using the hostname. NOTE! Refer to the MMW04 Programming Manual to integrate the device with third-party platforms via Modbus or MQTT protocols.
BASIC OPERATIONS 5.2.4 Password To avoid modifications by unauthorized people, the MMW04 allows setting an access password. When this option is enabled, you will be asked to enter the password before any change to the analyzer parameters, preventing any improper parameter setting.
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If the password is enabled, it is recommended to write it down in a safe place so that it is not forgotten. To ensure greater security, the MMW04 does not have a default password. To recover the password, it is necessary to obtain a MASTER password using the serial number and the Token generated by the device.
MASTER Password, type it into the device and change it if you prefer. 5.3 RESETS The MMW04 allows you to reset all of the device parameters to factory default values in a single command, in addition to allowing you to delete energy and demand values.
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The device will ask you to confirm the action, then press again to finish the action. This command will erase: Energies: energy accumulators (the energy integrator will be reset). Demands: demand accumulators (the demand integrator will restart). 5-18 | MMW04...
5.4 DEVICE INFORMATION The MMW04 provides an information submenu, where you can access equipment data and the status of the ethernet communication interface. See below how to access the help and information screens. In the main menu, select the Information (INF) submenu, as described in the Navigation section.
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Link: hardware status of the ethernet link, Up or Down. If Up, it means there is an ethernet cable connected. SNTP: clock synchronization status via SNTP. In the case of Freerun, the equipment will be counting time using the internal clock, without synchronization. If Synchronized, the equipment will be synchronized to the NTP server clock. 5-20 | MMW04...
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Auth: authentication status in the MQTT broker. In case of error, check the username and password parameters. Submissions: number of publications made in the last section opened with the broker. If it is not increasing, check the informed topic and the IoT platform publication policies. MMW04 | 5-21...
B, and, in the event of an interruption of channel B, on the voltage of channel C. In case of total absence of signal in the voltage channels, the MMW04 will generate an internal reference signal with a frequency equal to the declared frequency value.
MEASURING ELECTRICAL QUANTITIES 6.2 POTÊNCIAS E FATOR DE POTÊNCIA The MMW04 performs power and power factor measurements based on the methods defined by IEC 61557- 12. Measurements are taken in the four quadrants, enabling measurements at points with energy generation or consumption flows.
The maximum and minimum values are separated by the characteristic, capacitive or inductive, but ignore the signal. Thus, the MMW04 considers the maximum value to be the power factor closest to 1 or -1, while for the minimum value, the power factor closest to 0.
MEASURING ELECTRICAL QUANTITIES 6.3 POWER DEMAND The MMW04 calculates the total power demand in fixed windows, that is, the total power is accumulated during a fixed interval and at the end divided by the interval time. The graph below illustrates this method.
MEASURING ELECTRICAL QUANTITIES 6.4 ENERGY The MMW04 takes energy measurements based on power measurements. The time base for power integration is obtained through the analyzer real-time clock. For active and reactive energy, the results are separated into groups according to the direction of energy flow (direct for energy consumed and reverse for energy generated).
The figure below shows the MMW04 screen map for measuring harmonics and harmonic distortion. To access them, see the Basic Operations - Navigation - Measurements menu chapter.
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If the VT parameter setting mode is Prim/Sec, you can set the PT ratio using the primary and secondary voltage values: Primary: voltage in the transformer primary. 220 [ 50, 999999 ] V. Secondary: voltage in the transformer secondary. 220 [ 50, 999999 ] V. MMW04 | 6-7...
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Secondary: current in the transformer secondary. 5 [ 5 ] A. If the CT mode is Ratio, the transformer turn ration is set directly: RTC: current transformer turn ratio. 1 [ 1.00, 20000 ]. 6-8 | MMW04...
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Ic: CT polarization of current channel C. { Direct (+) | Reverse (-) }. Sum Mode: method of calculating total powers. { Vector | Arithmetic }. Interval: time interval for integration of power demand. 15 [ 1, 60 ] min. MMW04 | 6-9...
MEASURING ELECTRICAL QUANTITIES 6.7 MONITORING In addition to the values shown on the MMW04 screen, you can view, through the WEG Power Manager desktop, all voltage, current and frequency measurements, including maximum and minimum statistics. To that end, on the Data tab, push the Monitoring button and select a device to view the measurement.
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MEASURING ELECTRICAL QUANTITIES Result of the view in the browser. MMW04 | 6-11...
7.1 SAVING ELECTRICAL QUANTITIES Saving data in the MMW04 mass memory works in a similar way to a laptop. When you start saving data, a new area is created in the device memory. This area contains the identification and configuration data of the analyzer at the time the saving started.
SAVING DATA AND EVENTS 7.2 PARAMETER SETTING The MMW04 has several configurable data saving features. Below are the directions to set the device parameters in order to configure data saving according to the user's needs. Use the keys to navigate the submenu screens.
SAVING DATA AND EVENTS 7.3 OPERATION Make sure that, before starting the data saving, all desired parameters have been applied to the MMW04 as needed, because, after the saving begins, all parameter settings will be locked to preserve the integrity of the saved data.
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Then the data saving state machine will go to Synchronizing, state indicating that the equipment is waiting for clock synchronization with an aggregation interval set. After passing the intermediate state, the MMW04 will start saving data. On the data registration screen, the user can: Pause: temporarily pauses data saving, and the user can continue saving data in the same memory area.
Once the problem and its cause have been identified, proceed with the relevant parameter setting to solve the problem and then restart the process of starting data saving. 7.3.2 Erase Areas To reuse the internal memory space, the MMW04 allows areas already exported to be erased from the device. This process is called mass memory formatting. ATTENTION! Please note that this procedure cannot be reversed.
7.3.3 Remaining Capacity The remaining capacity variable allows the user to know how long the MMW04 will remain saving before the available memory in the area runs out. The remaining capacity of the mass memory is directly related to the aggregation interval and the number of electrical quantities selected for saving.
SAVING DATA AND EVENTS The MMW04 provides screens to check the device remaining capacity. To access them, follow the procedure below. In the data log control submenu, access the free memory screen by pressing This screen contains information about Free Memory and Remaining Capacity.
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SAVING DATA AND EVENTS Click the Search areas button and select the area and data blocks that will be read from the MMW04. Click Download area to start reading the data. At the end of the process, click the Open last area button to load the data visualization of the downloaded area.
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SAVING DATA AND EVENTS The WEG Power Manager desktop allows you to view data in the form of tables. Click on Switch tables to switch the area measurement blocks. The Graph and Report buttons allow you to view graphs and generate reports from the selected data table.
See the Specifications chapter to view the electrical characteristics of the digital input. The MMW04 digital input can be set to adapt it to the specifications of the voltage signal that will be monitored. Below are the directions to monitor the signal and set the digital input. Use the keys to navigate the submenu screens.
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A message will be shown. Press the key to confirm the action. ATTENTION! The maximum value of the digital input counter is 9999999. After that, the rollover of the counter occurs, returning to zero. 8-2 | MMW04...
The MMW04 provides a digital output that can be controlled manually through commands from an external supervisor, or through measurement alarm events available on the equipment, thus enabling simple process control. The relay available on the MMW04 is normally open (NO), that is, it will remain open for as long as the device is de-energized.
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Mode: relay actuation mode, whether through manual command, or through measurement alarm events. { Manual | Alarm }. If the actuation mode is manual, you can keep pressing the key to open or close the relay. Otherwise, this functionality will be disabled. 8-4 | MMW04...
AUTOMATION 8.3 EVENTS BY ALARM The MMW04 allows setting parameters and simultaneously manage up to 20 measurement alarms. Measurement alarms have three operating zones: normal, alarm and transition zones. For an alarm to be considered active, the values of the monitored quantities must leave the normal operating zone, passing through the transition zone, to the alarm zone.
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The valid actuator for alarms is the digital output. The MMW04 performs a logical "OR" of all alarms associated with an output, so that one alarm is enough to be active for that output to be actuated.
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{ None | Relay 1 }. Setting the limits for the alarm zone of the event alarm. Setting limits for the normal operation zone of the event alarm. Setting the delay (pre) and duration (post) times of the actuation. MMW04 | 8-7...
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. As long as the quantity monitored by the alarm does not return to the normal operation zone, the forced alarm will no longer act on the associated output. 8-8 | MMW04...
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Set the Pre option to 3 seconds, preventing the alarm from activating during fast sags or rises. If desired, set the duration of the actuation in Post. Enable the alarm event by holding down the key pressed. MMW04 | 8-9...
8.4 MONITORING AND PARAMETER SETTING If desired, the monitoring and parameter settings of the automation-related functionalities described in this chapter can be accessed through the WEG Power Manager desktop. To that end, on the Schedule tab, click the Automation button.
AUTOMATION 8.5 SAVING EVENTS ON INPUTS AND OUTPUTS The MMW04 allows saving transitions on digital inputs or relay output in mass memory. The following values are saved in mass memory. Type: whether digital input or relay output. Indexer: input or output number.
Average frequency F avg [Hz] Available Values Maximum frequency F max [Hz], date and time at maximum frequency ts @ F max Minimum frequency F min [Hz], date and time at minimum frequency ts @ F min MMW04 | 9-1...
Minimum line current I min [A], Date and time ts @ I min and Line q @ I min Maximum line current I max [A], Date and time ts @ I max and Line q @ I max Average line current I avg [A] Read Value (VL), Full Scale (FE) 9-2 | MMW04...
Average power factor per phase TPFa avg, TPFb avg and TPFc avg Available Values Maximum power factor per phase TPFa max, TPFb max and TPFc max Minimum power factor per phase TPFa min, TPFb min and TPFc min TPF total power factor Read Value (VL), Full Scale (FE) MMW04 | 9-3...
Forecast of total active Pd prev [W], reactive Qd prev [VAr] and apparent Sd prev [VA] power demand Forecast of total inductive Qd prev {i} and capacitive Qd prev {c} [VAr] reactive power demand Read Value (VL), Full Scale (FE) 9-4 | MMW04...
250 V Maximum Current 9.5 COMMUNICATION INTERFACES Item Specification Ports Up to 2 simultaneous: Ethernet and RS-485 Protocols Modbus RTU, Modbus TCP, MQTT and SNTP 9.5.1 Ethernet Item Specification Type 10/100 Mbps Effective Transfer Rate [kbps] Connector RJ-45 MMW04 | 9-5...
Heat resistant plastic material (ABS). DIN 96 standard Dimensions (Height x Width x Depth) 98 x 98 x 101 mm (3.86 x 3.86 x 3.98 in) Panel Cutout 91.0 x 91.0 -0.0/+0.8 mm Weight 425 g Protection Rating IP54 9-6 | MMW04...
SPECIFICATIONS 9.10 ENVIRONMENTAL CONDITIONS Item Specification Storage Temperature 0 to 75 °C (32 to 167 °F) Operating Temperature 0 to 60 °C (32 to 140 °F) Air Relative Humidity 40 to 70 % MMW04 | 9-7...
Check on the LOG screen if the equipment is not already in saving mode. Device will not Check that the equipment is not saving. While the meter is in LOG Status SAVING, it will not be possible to allow changing change parameters. Parameters MMW04 | A-1...
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Transport, assembly and instalation / Transporte, montagem e Appendix A instalaçao Appendix B Comissioning / Colocaçao em funcionamento Appendix C Operation / Operaçao e manutençao Appendix D Disassembly and disposal / Desmontagem e descarte Projeto / Project: MMW04 (EP098) MMW04 | B-1...
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