Simplify complex motor drive troubleshooting with guided test setups and automatic drive measurement that provide reliable, repeatable test results.

The Fluke MDA 550 Motor-Drive Analyzer saves time and the hassle of setting up complex measurements, and simplifies the troubleshooting process. Simply select a step-by-step guided test and measurement will show you where to make voltage and current connections, while preset measurement profiles ensure you will get all the data you need for every critical motor drive part, from input to output, the DC bus, and the motor itself . Doing simple to complex measurements? MDA-550 can do it. What's more, making reports before (as-found) and after (as-left) repairs or adjustments becomes more practical. This is all thanks to its built-in report generator feature.



The MDA-550 is an ideal portable motor drive analysis testing tool. Not only that, this tool can also be used to safely detect and solve common problems in inverter-type motor drive systems.



- Measures main motor drive parameters , including voltage, current, DC bus voltage level and AC ripple, voltage and current unbalance and harmonics, voltage modulation, and motor shaft voltage discharge.

- Performs broader harmonic measurements to identify the impact of low and high order harmonics on your power system.

- Performs guided measurements of motor drive input, DC bus, drive output, motor input, and shaft measurements with step-by-step graphical diagrams of voltage and current connections.

- Uses simple measurement settings with preset measurement profiles to automatically trigger data collection based on the selected test procedure.

- Quickly and easily generate reports that are perfect for documenting problem solving and collaborative work with others.

- Measure additional electrical parameters with a complete 500 MHz oscilloscope, meter and logger capability for a wide range of electrical and electronic measurements in industrial systems



The Fluke MDA-550 Motor Drive Analyzer uses guided test measurements to make analysis even easier



Drive input



Quickly measure input voltage and current to see if values ??are within acceptable limits by comparing the rated voltage to the actual supply voltage. It then checks the input current to determine if the current is within its maximum rating and the conductor size is appropriate. You can also check if the harmonic distortion is within an acceptable level. There are two options for doing this: carefully examine the shape of the waveform or look at the harmonics spectrum screen which displays total harmonic distortion and individual harmonics.



Imbalance of voltage and current



Check the voltage unbalance at the input terminals so you can make sure the voltage unbalance is not too high (> 6-8%), and the phase rotation is correct. You can also check for current unbalance, as too large an imbalance can indicate a driving rectifier problem.



Wider harmonic measurement



Excess harmonics are not only a threat to your rotating machine, but also to other equipment connected to the mains power system. As well as being able to detect motor drive harmonics, the MDA-550 can also detect the potential impact of inverter switching electronics. The MDA-550 has three harmonic ranges, 1st to 51st harmonics, 1 to 9 kHz, and 9 kHz to 150 kHz providing the ability to detect harmonic pollution problems.



Bus DC



In motor drives, the conversion of AC to DC inside the drive is very important. The reason is that for the best drive performance it is necessary to have the right voltage and adequate smoothing with low ripple. High ripple voltages can be an indicator of a faulty capacitor or a faulty motor connected. The logging function can be used to dynamically check the performance of the DC bus in operating mode when load is applied.



Drive output



Check drive output focusing on voltage to frequency (V/F) ratio, and voltage modulation. If the V/F ratio is high, the motor may overheat. With a low V/F ratio, the connected motor may not be able to provide the torque required at the load to carry out the process for which it is intended.



Voltage modulation



Pulse Width Modulation signal measurements are used to check for high voltage peaks that can damage motor winding insulation. The rise time or steepness of the impulse is indicated by a dV/dt reading (value of change in voltage over time), this must be compared with the specified motor insulation. Metering can also be used to measure switching frequency. Its purpose is to detect whether there is a potential problem with the switching electronics, or with grounding, as the signal drifts up and down.



Input Motor



Ensuring the supply of voltage at the motor input terminal is important. However, choosing a connecting cable between the drive and the motor is no less important. Incorrect cable selection can cause damage to the drive and motor due to overvoltage peaks. Checking that the current at the terminals is within the motor's rating is critical because excess current can cause the motor to overheat, reducing the life of the stator insulation which can cause premature failure of the motor.



Motor shaft voltage



The voltage impulse in the variable speed drive is generated from the circuit between the motor stator and the rotor until a voltage appears on the rotor shaft. If the rotor shaft voltage exceeds the insulating capacity of the bearing grease, flashover currents (glow) may occur. As a result, pitting and fluting of the motor bearing rotation occurs, namely damage that causes the motor to fail prematurely. The MDA-550 is equipped with a carbon fiber brushed probe tip that makes it easy for you to detect destructive flashover currents. Meanwhile, the amplitude of the impulse and the number of events can be used as a consideration in taking preventive action. With the addition of these accessories and capabilities, you can spot potential faults without the need to buy expensive permanent solutions.



Step-by-step guided measurements ensure you have the data you need, when you need it



The MDA-550 is designed to help you quickly and easily test and troubleshoot common three-phase and single-phase inverter-type motor drive systems. Onscreen information and a step-by-step setup guide make it easy for you to configure the analyzer. Not only that, the information and guide will also provide the required drive measurements. That way, you can quickly make informed decisions regarding maintenance. From power input to attached motor, the MDA-550 provides measurement capabilities for the fastest motor drive solutions.

Double your strength



The Fluke 787 was the first device to combine a DMM and a loop calibrator to give process technicians double the power in one tool. Now even better, range is extended in the Fluke 789 – the ultimate loop calibration multimeter. The Fluke 789 has a 24-Volt supply loop which eliminates the need to take a separate power supply when testing transmitters offline. And with selectable onboard 250-Ohm Hart® resistors, the need to carry separate resistors is eliminated. Now process engineers can do more while carrying far less.

The Fluke 393 FC CAT III 1500 V True-rms Solar Clamp Meter with iFlex is designed for solar photovoltaic (PV) installation technicians and maintenance professionals who work in high voltage DC environments: PV arrays, wind power, electric railways, data centers battery banks for uninterruptible power supplies. The clamp meter will measure up to 1500 V DC and 1000 V AC with test leads, and up to 999.9 A DC or AC through the clamp jaw. The included iFlex flexible current probe extends AC current measurements up to 2500 A. The 393 has a thin jaw, giving you access to cables in crowded combiner boxes. Plus, the test leads are designed with your work in mind, and are also rated to CAT III 1500 V DC.



Key functions of the solar clamp meter:

- IP54 rated, ideal for work outdoors including PV panel testing

- DC power measurement, showing readings in kVA

- Audio Polarity indicator helps prevent accidental miswires

- Visual Continuity provides a bright green light in the display, ideal when working in dark and noisy environments

- Logging and reporting of test results via Fluke Connect software

- When measuring ac current the included iFlex flexible current probe gives you unparalleled access to cable is tight spaces. The iFlex probe can be twisted through extremely small spaces and provide accurate current measurements.



The world's first CAT III 1500 V true-RMS solar clamp meter

Portable multi-function calibrator simplifies calibration work



Whether you're calibrating instruments, troubleshooting a problem, or running routine maintenance, the Fluke 754 with HART® communication can help you get the job done faster. It does many different tasks quickly and it's the only process calibrator you need to carry. This rugged, reliable, integrated communicating calibrator is ideal for calibrating, maintaining, and troubleshooting HART smart transmitters and other instrumentation.



Measurement and source capabilities:

- AC/DC voltage

- mA loop w/ 24V loop power

- Pressure

- Thermocouples & RTDs

- Frequency

- Resistance



Enhanced process calibrator operation



With the bright white dual display, you’ll be able to read both sourced and measured parameters simultaneously. The rechargeable Li-Ion battery offers up to 10 hours uninterrupted usage allowing you to complete one task after another without needing to stop, and also includes direct AC power capabilities if needed. Finally, communicate with HART smart digital transmitters directly through the mA measurement jacks for seamless calibration with fewer connections.



Do more, with less

The 754 does the work of several tools. It sources, simulates and measures pressure, temperature, and electrical signals with one rugged, hand-held device. The powerful built-in HART interface can perform nearly all day-to-day tasks you now perform with a separate digital communicator. It can handle fast-pulsed RTD transmitters and PLCs, with pulses as short as 1 ms. The 754 also measures/sources pressure using any of the Fluke 750P Series Pressure Modules as a reference and boasts many additional features like:

- Custom auto-step and ramping

- Custom units

- User-entered values during test

- One-point and two-point switch testing

- Square root DP flow testing

- Programmable measurement delay



Download procedures, lists, and instructions



The 754 is a power multifunction documenting calibrator that you can use to download procedures, lists, and instructions created with software, or upload data for printing, archiving, and analysis. The tool can hold up to a full week of downloaded procedures and calibration results and offers compatibility with many asset management software. Users can also create and run automated as-found or as-left procedures to satisfy quality programs or regulations, and records and documents results.



For documentation, the 754 automates calibration procedures and captures your data. And, of course, it helps you meet rigorous standards like ISO 9000, FDA, EPA, and OSHA regulations. Plus, the graphical screen, Li-Ion battery for longer life, USB port, and accessories help you work smarter and faster.



To create a seamless/paperless calibration management system consider adding Fluke DPCTrack2 Calibration Management software.