Fluke MDA-550 Specifications

TECHNICAL DATA

Fluke MDA-510 and MDA-550
Motor Drive Analyzer

Simplify complex motor-drive troubleshooting
with guided test setups and automated drive
measurements that provide reliable, repeatable test
results.

The new Fluke MDA 510 and MDA 550 Motor-Drive Analyzers save
time and eliminate the hassle of setting up complex measurements,
while simplifying the troubleshooting process. Simply select
a test and the step-by-step guided measurements show you
where to make voltage and current connections, while the preset
measurement profiles ensure you will capture all the data you
need for each critical motor-drive section—from the input to the
output, the DC bus, and the motor itself. From basic to advanced
measurements, the MDA-500 Series has you covered, and with
a built-in report generator you can quickly and easily generate
as-found, and as-left reports with confidence.

KEY MEASUREMENTS

Inverter output voltage, DC bus voltage and
ripple voltage, harmonics, unbalance

THREE POWERFUL TEST TOOLS IN
ONE

Motor-drive analyzer, waveform analyzer
and recording data logger all in one

HIGHEST SAFETY RATING IN THE
INDUSTRY

600 V CAT IV/1000 V CAT III rated for use at
the service entrance and downstream

The MDA-510 and MDA-550 are the ideal portable motor-drive
analysis test tools, and can help safely locate and troubleshoot
typical problems on inverter type motor-drive systems.

• Measure key motor-drive parameters including voltage,

current, DC Bus voltage level and AC ripple, voltage and current
unbalance and harmonics (MDA-550), voltage modulation, and
motor shaft voltage discharges (MDA-550).

• Perform extended harmonics measurements to identify the

effects of low and high order harmonics on your electrical power
system.

• Conduct guided measurements for motor-drive input, DC bus,

drive output, motor input and shaft measurements (MDA-550)
with graphical step-by-step voltage and current connection
diagrams.

• Use simplified measurement setup with preset measurement

profiles to automatically trigger data collection based on the
chosen test procedure.

• Create reports quickly and easily that are perfect for

documenting troubleshooting and collaborative work with
others.

• Measure additional electrical parameters with full 500 MHz

oscilloscope, meter and recording capability for complete range
of electrical and electronic measurement on industrial systems.

The Fluke MDA-510 and MDA-550 Motor Drive
Analyzers use guided test measurements to make
analysis easier than ever

Drive input

Measure input voltage and current to quickly see whether values
are within acceptable limits by comparing the drive’s nominal
rated voltage to the actual supplied voltage. Then, check the input
current to determine if the current is within the maximum rating
and the conductors are suitably sized. You can also check whether
the harmonic distortion is within an acceptable level by visu­ally inspecting the waveform shape or by viewing the harmonics
spectrum screen (MDA-550) which shows both the total harmonic
distortion and individual harmonics.

Voltage and current unbalance

Check the voltage unbalance at the input terminals so you can
ensure the phase unbalance is not too high (> 6-8 %), and that the
phase rotation is correct. You can also check the current unbalance,
as excessive unbalance may indicate a drive rectifier problem.

Extended harmonic measurements

Excessive harmonics are not just a threat to your rotating machines
but also to other equipment connected to the electrical power
system. The MDA-550 provides the ability to discover the harmon­ics of the motor-drive but can also discover the possible effects 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
giving the ability to detect any harmonic pollution problems.

Drive input step-by-step guided measurement
connections

DC bus

In a motor-drive the conversion of AC to DC inside the drive is
critical, having the correct voltage and adequate smoothing with
low ripple is required for the best drive performance. High ripple
voltage may be an indicator of failed capacitors or incorrect sizing
of the connected motor. The record function of the MDA-500 Series
can be used to check DC bus performance dynamically in the oper­ating mode while a load is applied.

Drive output

Check the output of the drive focusing both on voltage to frequency
ratio (V/F), and voltage modulation. When high V/F ratio measure­ments are experienced, the motor may overheat. With low V/F
ratios, the connected motor may not be able to provide the required
torque at the load to sufficiently run the intended process.

Drive output waveform with auto triggering

Extended harmonics spectrum from 9 kHz to
150 k Hz

2 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

Voltage modulation

Measurements of the Pulse Width Modulated signal are used to
check for high voltage peaks which can damage motor winding
insulation. The rise time or steepness of impulses is indicated by
the dV/dt reading (rate of voltage change over time), this should
be compared to the motor’s specified insulation. The measure­ments can also be used to measure switching frequency to identify
whether there is a potential issue with electronic switching, or
with grounding, where the signal floats up and down.

Motor input

Ensuring that voltage is being supplied at the motor input termi­nals is key, and the selection of cabling from drive to the motor
is critical. Incorrect cabling selection can result in both drive and
motor damage due to excessive reflected voltage peaks. Checking
that the current present at the terminals is within the motor rating
is important as over current condition could cause the motor to run
hot, decreasing the life of the stator insulation which can result in
the early failure of the motor.

Motor shaft voltage

Voltage pulses from a variable speed drive can couple from a
motor’s stator to its rotor, causing a voltage to appear on the rotor
shaft. When this rotor shaft voltage exceeds the insulating capac­ity of the bearing grease, flashover currents (sparking) can occur,
causing pitting and fluting of the motor bearing race, damage that
can cause a motor to fail prematurely. The MDA-550 Series ana­lyzers are supplied with carbon fiber brush probe tips that can
easily detect the presence of destructive flashover currents, while
the impulse amplitude and count of events will enable you to take
action before failure occurs. The addition of this accessory and
capability of the MDA-550 allows you to discover potential damage
without investing in expensive permanently installed solutions.

Voltage modulation with zoom

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

The MDA-500 Series is designed to help you quickly and easily
test and troubleshoot typical problems on three-phase and
single-phase inverter type motor-drive systems. The on-screen
information, and step-by-step setup guidance make it easy to con­figure the analyzer and get the drive measurements you need to
make better maintenance decisions, fast. From power input to the
installed motor, the MDA-500 provides the measurement capability
for the fastest motor-drive troubleshooting.

3 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

Motor shaft voltage discharge event counts

Quick and easy measurement setup

1) Press ‘Motor Drive Analyzer’ button and select
‘Drive Measurement Location’.

2) Use the on-screen context information to
further guide you to successful setup and
measurement.

4) Select the measurement method/option.

5) Connect the test probes according to the dia­gram. Once complete press ‘Next’.

3) Choose the measurement.

4 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

6) The analyzer will then automatically trigger,
and configure the reading for the optimum
measurements.

Reporting and analysis

The MDA-500 Series simplifies the process of
gathering data and writing test reports with a
built-in report generator.

At each test point or measurement there is the
option to create, update or modify a report. Simply
press ‘SAVE TO REPORT’ and select the appropri­ate screens to save into a text based report file.

By performing the step-by-step guided measure­ments a comprehensive report can be created
directly from the instrument to document the
entire troubleshooting process.

Input the report name. The single report encom­passes all recorded measurements and can easily
be shared with other users and used for motor­drive benchmarking, and for comparing data now
and in the future.

5 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

Featured measurements

Measurement and Analysis Combinations

Test point Sub group Reading 1 Reading 2 Reading 3 Reading 4

Motor drive input

Voltage and current

Phase-phase

Phase-ground

Voltage unbalance Unbalance V ac+dc V ac+dc V ac+dc Unbalance

Current unbalance Unbalance A ac+dc A ac+dc A ac+dc Unbalance

Motor drive DC bus

DC V dc V pk-to-pk V peak max

Ripple V ac V pk-to-pk Hz

Motor drive output

Voltage and current
(filtered)

Voltage unbalance Unbalance V PWM V PWM V PWM Unbalance

Current unbalance Unbalance A ac+dc A ac+dc A ac+dc Unbalance

Voltage modulation

Phase-phase

Phase-ground

Phase-DC +

V-A-Hz V ac+dc A ac+dc Hz

V peak V peak max V peak min V pk-to-pk Crest factor

A peak A peak max A peak min A pk-to-pk Crest factor

V-A-Hz V ac+dc A ac+dc Hz

V peak V peak max V peak min V pk-to-pk Crest factor

A peak A peak max A peak min A pk-to-pk Crest factor

Peak V pk-to-pk V pk-to-pk V pk-to-pk

Peak A pk-to-pk A pk-to-pk A pk-to-pk

V-A-Hz V PWM A ac+dc Hz V/Hz

V peak V peak max V peak min V pk-to-pk Crest factor

A peak A peak max A peak min A pk-to-pk Crest factor

Peak V pk-to-pk V pk-to-pk V pk-to-pk

Peak A pk-to-pk A pk-to-pk A pk-to-pk

Zoom 1 V PWM V pk-to-pk Hz V/ H z

Zoom 2 V peak max V peak min Delta V

Zoom 3 peak V peak max Delt a V/s Risetime peak Overshoot

Zoom 3 level Delta V Delta V/s Risetime level Overshoot

Zoom 1 V PWM V pk-to-pk V peak max V peak min

Zoom 2 V Peak max V peak min Delta V Hz

Zoom 3 peak V Peak max Delta V/s Risetime peak Overshoot

Zoom 3 level Delta V Delta V/s Risetime level Overshoot

Zoom 1 V PWM V pk-to-pk V Peak max V peak min

Zoom 2 V peak max V peak min Delta V Hz

Zoom 3 peak V peak max Delt a V/s Risetime peak Overshoot

Zoom 3 level Delta V Delta V/s Risetime level Overshoot

6 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

Phase-DC -

Zoom 2 V peak max V peak min Delta V Hz

Zoom 3 peak V peak max Delt a V/s Risetime peak Overshoot

Zoom 3 level Delta V Delta V/s Risetime level Overshoot

Motor input

Voltage and current
(filtered)

V peak V peak max V peak min V pk-to-pk Crest factor

A peak A peak max A peak min A pk-to-pk Crest factor

Voltage unbalance Unbalance V PWM V PWM V PWM Unbalance

Peak V pk-to-pk V pk-to-pk V pk-to-pk

Current unbalance Unbalance A ac+dc A ac+dc A ac+dc Unbalance

Peak A pk-to-pk A pk-to-pk A pk-to-pk

Voltage modulation

Phase-phase Zoom 1 V PWM V pk-to-pk Hz V/Hz

Zoom 2 V peak max V peak min Delta V

Zoom 3 peak V peak max Delt a V/s Risetime peak Overshoot

Zoom 3 level Delta V Delta V/s Risetime level Overshoot

Phase-ground Zoom 1 V PWM V pk-to-pk V peak max V peak min

Zoom 2 V peak max V peak min Delta V Hz

Zoom 3 peak V peak max Delt a V/s Risetime peak Overshoot

Zoom 3 level Delta V Delta V/s Risetime level Overshoot

MDA 550 only

Motor shaft

Shaft voltage Events off V pk-to-pk

Events on Delta V Rise/fall time Delt a V/s Events/s

Motor drive input, output and motor input

Harmonics Voltage V ac V fundamental Hz fundamental % THD

Current A ac A fundamental Hz fundamental % THD/TDD

Zoom 1 V PWM V pk-to-pk V peak max V peak min

V-A-Hz V PWM A ac+dc Hz V/Hz

7 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

Specifications

Measurement Function Specification

DC voltage (V dc)

Maximum voltage with 10:1 or 100:1
probe

Maximum resolution with 10:1 or 100:1
probe

Full scale reading 999 counts

Accuracy at 4 s to 10 us/div ± (3 % + 6 counts)

AC voltage (V ac)

Maximum voltage with 10:1 or 100:1
probe

Maximum resolution with 10:1 or 100:1
probe

Full scale reading 999 counts

50 Hz ± (3 % + 10 counts) - 0.6 %

60 Hz ± (3 % + 10 counts) - 0.4 %

60 Hz to 20 kHz ± (4 % + 15 counts)

20 kHz to 1 MHz ± (6 % + 20 counts)

1 MHz to 25 MHz ± (10 % + 20 counts)

True-rms voltage (V ac+dc)

Maximum voltage with 10:1 or 100:1
probe

Maximum resolution with 10:1 or 100:1
probe

Full scale reading 110 0 c o u nts

DC to 60 Hz ± (3 % + 10 counts)

60 Hz to 20 kHz ± ( 4 % + 15 counts)

20 kHz to 1 MHz ± (6 % + 20 counts)

1 MHz to 25 MHz ± ( 10 % + 20 counts)

PWM voltage (V pwm)

Purpose To measure on pulse width modulated signals, like motor drive inverter outputs

Principle Readings show the effective voltage based on the average value of samples over a whole number

Accuracy As Vac+dc for sinewave signals

Peak voltage (V peak)

Modes Max peak, min peak, or pk-to-pk

Maximum voltage with 10:1 or 100:1
probe

Maximum resolution with 10:1 or 100:1
probe

Accuracy

Max peak, min peak ± 0.2 division

Pk-to-pk ± 0.4 division

Full scale reading 800 counts

1000 V

1 mV

1000 V

1 mV

1000 V

1 mV

of periods of the fundamental frequency

1000 V

10 mV

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Current (AMP) with current clamp

Ranges Same as V ac, Vac+dc or V peak

Scale Factors 0.1 mV/A, 1 mV/A, 10 mV/A, 20 mV/A, 50mV/A, 100 mV/A, 200 mV/A, 400 mV/A

Accuracy Same as Vac, Vac+dc or V peak (add current clamp accuracy)

Frequency (Hz)

Range 1.000 Hz to 500 MHz

Full scale reading 999 counts

Accuracy ± (0.5 % + 2 counts)

Voltage/Herz ratio (V/Hz)

Purpose To show the measured V PWM value (see V PWM) divided by the fundamental frequency on vari-

able ac motor speed drives

Accuracy % Vrms + % Hz

Voltage unbalance drive input

Purpose To show the highest percentage difference of one of the phase vs average of the 3 true-rms

voltages

Accuracy Indicative percentage based on Vac+dc values

Voltage unbalance drive output and
motor input

Purpose To show the highest percentage difference of one of the phase vs average of the 3 PWM voltages

Accuracy Indicative percentage based on V PWM values

Current unbalance drive input

Purpose To show the highest percentage difference of one of the phase vs average of the 3 AC current

values

Accuracy Indicative percentage based on Aac+dc values

Current unbalance drive output and
motor input

Purpose To show the highest percentage difference of one of the phase vs average of the 3 AC current

values

Accuracy Indicative percentage based on A ac values

Rise and fall time

Readings Voltage difference (dV), time difference (dt), voltage vs time difference (dV/dt), overshoot

Accuracy As oscilloscope accuracy

Harmonics and spectrum

Harmonics DC to 51st

Spectrum ranges 1…9 kHz, 9-150 kHz (20 MHz filter on), up to 500 MHz (voltage modulation)

Shaft voltage

Events / second Indicative percentage based on rise and fall time (Impulse discharges) measurements

Report data capture

Number of screens Typical 50 screens can be saved in reports (depends on compression ratio)

Transfer to PC Using 2 GB USB stick or mini-USB to USB cable and FlukeView™ 2 for ScopeMeter™

Probe settings

Voltage Probe 1:1, 10:1, 10 0:1, 1000:1, 20:1, 2 0 0:1

Current Clamp 0.1 mV/A, 1 mV/A, 10 mV/A, 20 mV/A, 50 mV/A, 100 mV/A, 200 mV/A, 400 mV/A

Shaft Voltage Probe 1:1, 10:1, 10 0:1

9 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

Ordering information

MDA-510
Motor drive analyzer, 4 channel, 500 MHz

MDA-550
Motor drive analyzer, 4 channel, 500 MHz with motor shaft
and harmonics

Includes
1x BP 291 li-ion battery pack, 1x BC190 charger/power adapter,
3x VPS 100:1 high voltage probes with alligator clips, 1x
VPS410-II-R 10:1 500MHz voltage probe, 1x i400s ac current
clamp, 1x C1740 carrying case, 1x 2 GB USB drive with manuals
and FlukeView™ 2 software

Fluke. Keeping your world
up and running.

®

MDA-550 also includes 1x SVS-500 shaft voltage set (3x
brush, probe holder, two-piece extension rod and magnetic
base), additional 2x i400s ac current clamps

Additional accessories
SVS-500 set of 3x brushes, probe holder, two-piece extension

rod and magnetic base

SB-500 set of 3x replacement brushes

*In addition, Fluke 190 series II ScopeMeter™ Test Tools acces­sories are also supported by the MDA-500 Series

10 Fluke Corporation Fluke MDA-510 and MDA-550 Motor Drive Analyzer

Fluke Corporation
PO Box 9090, Everett, WA 98206 U.S.A.

Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands

For more information call:
In the U.S.A. [phone] or
Fax [phone]
In Europe/M-East/Africa [phone] or
Fax [phone]
In Canada (800)-36-FLUKE or
Fax [phone]
From other countries [phone] or
Fax [phone]
Web access: http://www.fluke.com

©2018 Fluke Corporation.
Specifications subject to change without notice.
Printed in U.S.A. 6/2018 6011207b-en

Modification of this document is not permitted
without written permission from Fluke Corporation.