Resolver phase measurement system

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The ATSENSE ECS-RV01/ECM-RV11 Resolver Phase Measurement System delivers highly reliable resolver phase and counter-electromotive voltage analysis for EV motor development.

By directly measuring 3-phase back-EMF and resolver signals, it identifies the precise magnet position, enabling efficient drive control.
Features include waveform and numeric display, resistance and velocity measurement, EtherCAT synchronization for multi-unit setups, and ISO/IEC17025-calibrated accuracy. This robust solution supports advanced motor testing and validation in demanding R&D environments.

Resolver phase measurement system

Model:

ECS-RV01/ECM-RV11

Maker:

ATSENSE

Features

Simultaneous display of numerical values and waveforms for phase difference measurement
Various measurements such as resolver phase, angle/velocity, thermistor resistance value, and three-phase effective value
CSV data for measurement conditions and measurements, hard copy of screen
Calibration certificate can be issued for unit voltage value ISO/IEC17025
Guarantee for the synchronicity of multi-unit data via EtherCat communication

※This system uses EtherCAT communication, and the connected EtherCAT slave units can maintain synchronicity.

Comparison between the existing method of resolver phase measurement and this system

Specifications

Resolver interface
Target resolver	1-phase excitation 2-phase (SIN, COS) output resolver
Resolver excitation signal	R1・R2 7Vrms Excitation frequency selectable from 10kHz/20kHz
Input from resolver	Sine input (S2,S4) and Cosine input ( S1, S3) Selectable input gain and shaft angle multiplication (×1 to ×4)
Encoder simulated output	A-phase, B-phase, Z-phase Maximum phase difference measurements: 1200r/min
Angular position output	Resolution±0.09° Maximum error when resolver is stationaryat a standstill±0.4°
Rotational velocity	Calculated from encoder simulated signal A-phase and B-phase 0 to 5000r/min for X2 resolver
Connector	6-pin spring type terminal block connector 2.5mm pitch 1 row
Counter electromotive voltage input
Input voltage	Three-phase AC100Vrms or less between phases Temperature deviation ±0.02V Instantaneous value accuracy ±0.07V
Conversion speed	100kSPS (signed 16bit data)
Insulation spec.	Three-phase collective ground (FG) AC2000V for 1 minute
Connector	4-pin spring type terminal block connector 2.5mm pitch 1 row
Resistance measurement
Resistance range	100Ω~150kΩ Resistance value error ±1.5% (1kΩ to 150kΩ), ±4% (100Ω)
Assumed usage	Connect a thermistor to measure temperature (Conversion from resistance value to temperature is performed by the master)
Connector	2-pin spring type terminal block connector 2.5mm pitch 1 row
EtherCAT port(IN/OUT)
Connector	RJ45 socket IN port/OUT port 1 each
Protocol	EtherCAT slave
Connection cable	Ethernet category 5 or higher, double shield, straight wiring Possible to be prepared by users
Transmission speed	100Mbps
Sync mode	Fixed at 1ms
General specifications
RoHS Directive	European RoHS1 directive compliant
Power supply	DC24V±20%、6700mA max 3-pin spring type terminal block connector 3.5mm pitch 1 row
Electrical isolation	Electrical isolation between the following groups A/D input interface (counter electromotive voltage input) Resolver interface/internal circuit- EtherCAT connector (IN and OUT), case, FG (ground)- Power supply (DC24V)
Ambient temperature	-25℃~+60℃
Ambient humidity	95% RH or less (no condensation)
External dimensions	260(W)×70(H)×200(D) mm Not including protrusions
Weight	about 1600g

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