Setup Capability
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Measurement Locations |
AC Input, DC Bus (Link), Drive Output, Mechanical Output |
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Wiring Configurations |
AC Input: 1-phase / 2-wire (1V1A); 1-phase / 3-wire (2V/2A); 3-phase / 3-wire (2V2A); 3-phase / 3-wire (3V3A); 3-phase / 4-wire (3V3A); None
DC Bus: 1-phase / 2-wire (1V1A); None
Drive Output: 1-phase / Half-Bridge (1V1A); 1-phase / Full-Bridge (1V1A); 3-phase / 3-wire (2V2A); 3-phase / 3-wire (3V3A); 3-phase / 4-wire (3V3A); None |
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Harmonic Filter |
Select either Full Spectrum or Fundamental only. With WR8kHD-THREEPHASEHARMONICS option, also select Fundamental + N Harmonics or Range (maximum 50th harmonic in both cases). |
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Sync (per-cycle) Measurement Signal |
Independently settable for AC Input, DC Bus, Drive Output and Mechanical Output.
Low pass filter (LPF) cutoff settable from 20 Hz to 1 MHz. Hysteresis settable from 0-100% full amplitude.
Source can be any input analog channel, memory trace, or math function. |
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Voltage Measurement Method |
Line-Line or Line-Neutral (with L-L to L-N conversion supported) |
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Calculation Waveform Sources |
Any input channel or stored memory trace |
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Numerics Measurement Table Selections (Per-cycle Calculated, Mean Value Displayed)
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Voltage |
RMS voltage, AC Voltage, DC Voltage, Peak Positive Voltage, Peak Negative Voltage, Peak-Peak Voltage, Voltage Crest Factor, Voltage Total Harmonic Distortion (THD) (with the WR8kHD-THREEPHASEHARMONICS option) |
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Current |
RMS Current, AC Current, DC Current, Peak Positive Current, Peak Negative Current, Peak-Peak Current, Current Crest Factor, Current Total Harmonic Distortion (THD) (with the WR8kHD-THREEPHASEHARMONICS option) |
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Power, Efficiency, and Other |
Real, Apparent, and Reactive Power, Peak Positive Real Power, Peak Negative Real Power, Power Total Harmonic Distortion (THD) (with the WR8kHD-THREEPHASEHARMONICS option), Power Factor, Phase Angle, Incremental Efficiency, Total Efficiency, Frequency |
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Motor Mechanical + Other |
Torque, Speed1, Speed2, Angle1, Angle 2 (as defined by sensor, or adjusted with Offset Angle setting), Mechanical Power, AC induction motor Slip |
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Source Selections |
Voltage: Va, Vb, Vc, Va-b, Vb-c, Vc-a, Vr, Vs, Vt, Vr-s, Vs-t, Vt-r, Ia, Ib, Ic, Ir, Is, It, Vbus, Ibus, Mechanical.
Up to 10 rows (sources) and 12 columns (measurements) may be displayed in the table at any time. Source selections dependent on Wiring Configuration selections and Line-Line to Line-Neutral selections. |
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Motor Mechanical Interface
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Speed + Direction |
Analog Tachometer (0-xVdc = Speed). Source is analog input.
Digital Tachometer (x pulse/revolution = speed). Source may be digital or analog input.
Applied Voltage. Source is one analog input.
Controlled Area Network (CAN) Serial Data. Source is CAN message with embedded digital data. CANbus TDM or TDME option must be ordered separately.
Hall Sensors (three digital inputs). Source may be digital or analog input. Angle Tracking Observer filter may be applied to this selection. |
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Speed + Direction + Angle |
Resolver. Source is three analog inputs.
SinCos. Source is two analog inputs.
KMZ60. Source is two analog inputs.
Quadrature Encoder Interface (QEI) (A, B, and optional Z input). Source may be digital or analog input.
Angle Tracking Observer filter may be applied to all selections. |
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Torque |
Analog 0-Vdc = Torque. Source is one analog input.
Analog mV/V = Torque. Source is one analog input.
Analog Frequency Modulated = Torque. Source is one analog input.
Motor Constant K * Current = Torque. Source is MDA calculated per-cycle current value.
Controlled Area Network (CAN) Serial Data = Torque. Source is CAN message with embedded digital data. CANbus TDM or TDME option must be ordered separately. |
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Per-cycle Waveforms and Statistics
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Waveforms |
A time-correlated waveform of any per-cycle Numerics Table measurement parameter may be created and displayed anywhere on the grid. Up to 12 detailed per-cycle Waveforms may be displayed at one time, with up to 40 waveforms total (channels, memories, zooms, math, and per-cycle Waveforms) displayed at any one time. |
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Statistics |
Detailed statistics on up to 12 per-cycle Numerics Table measurement parameters may be displayed at one time. |
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Zoom+Gate Mode
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Operation |
Zoom+Gate creates zooms of all voltage, current and mechanical signals (analog or digital) and simultaneously gates the Numerics and Statistics tables to the zoomed area. Displayed per-cycle Waveforms are simultaneously time-correlated to the zoomed area. Scroll through the full acquisition using Zoom position and ratio (size) controls and view instantaneous updates of table values. |
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Harmonics Calculation Option (part number WR8kHD-THREEPHASEHARMONICS)
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Fundamental Frequency Detection |
Fixed Frequency detection mode (for Line AC inputs only) or Varying Frequency detection Mode (for Line AC inputs or Inverter PWM outputs). |
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Number of Harmonics Calculated |
Up to 100 (Fixed Frequency) or up to 50 (Varying Frequency) |
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Harmonics Table and Spectral Waveform Display |
Display values by Harmonic Order for up to 9 quantities (Voltage, Current and Power) for any or all of three phases (limited to Voltage and Current in Fixed Frequency mode). |
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Units/Limits Selection |
Select from either Amps/Volts/Watts, %, or dB.
For Fixed Frequency, selection Limits file or create and assign custom limits file. |
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Vector Display Option (availability ~January 2020)
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| Number of Vector Displays |
Two: One or AC Input and one for Drive Output |
| Vector Display Selection |
Arithmetic or Vector Sum |
| Display Information |
Volts, Amps, and Phase Angle for each vector |
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Typical Accuracy
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Voltage, Current and Power |
Accuracy is typically within 1%, depending on voltage and current measurement device.
Recommended voltage probe (line-line voltage sensing) = Teledyne LeCroy HVD Series High Voltage Differential Probe (1 kV, 2 kV and 6 kV isolated models available).
Recommended voltage probe (line-neutral or line-reference voltage sensing): Teledyne LeCroy HVD Series HV Differential Probe for voltages >50 Vrms, Teledyne LeCroy passive probe (Qty. 4 included) for voltages <=50 Vrms.
Recommended current probes: Teledyne LeCroy CP Series Current Probes.
Other voltage and current measurement devices may be interfaced to the oscilloscope and analysis software using built-in rescaling and unit selection capabilities. The CA10 current adapter provides programmability for rescaling and unit selection. |
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Available Options & Accessories
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Acquisition Memory |
125 Mpt/ch, maximum interleave up to 500 Mpt (WR8kHD-500MPT)
250 Mpt/ch, maximum interleave up to 1 Gpt (WR8kHD-1000MPT)
500 Mpt/ch, maximum interleave up to 2 Gpt (WR8kHD-2000MPT)
1.25 Gpt/ch, maximum interleave up to 5 Gpt (WR8kHD-5000MPT)
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| OscilloSYNC Synchronization (16ch) |
Combine two MDAs into a single, 16-channel acquisition system. OscilloSYNC option enables the display and control of 16 time-synchronized channels on one MDA after making a simple BNC and Ethernet connection between two instruments. |
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Mixed Signal Oscilloscope |
WR8kHD-MSO: 16 digital logic channel acquisition at up to 500 MHz digital clock rate, flexible analog and digital cross-pattern trigger and use of digital logic lines for mechanical speed sensing and serial data clock, data, and chip select probing, including (optional) serial data triggers and decoding. |
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Serial Triggers and Decoders |
Optionally available: I2C, SPI, UART-RS232, CAN, CAN FD, LIN, FlexRay, ARINC429, Audio (I2S), DPHY, DigRF3G, DigRFv4, DPHY, ENET, I3C, Manchester, MDIO, MIL1553, NRZ, SENT, SpaceWire, SPMI, USB2, USB2-HSIC, 8B/10B, . Symbolic triggering and decoding is available for CAN. TDME options provide automatic serial message timing measurements and serial (digital) data extraction and conversion (D-A capability) and eye diagram capabilities. |
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Probes and Accessories |
A comprehensive list of voltage and current probes is supported on the Motor Drive Analyzer. Additionally, rackmounts, carts, cases, additional removable drives, GPIB interface, and CPU RAM upgrades are also available. |
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Software Options |
Include Power (Semiconductor Device and Switch-mode Power Supply) Analysis, Digital Filtering, Clock+Timing Jitter, Serial Data Jitter, Serial Data Compliance, EMC/EMI Measurements, Spectrum Analysis, and Developer's Toolkit. |
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Consult MDA 8000HD datasheet for complete list of available options, accessories, and probes |