EMA-100, EMM-100M
Recent years have witnessed decrease in size and increase in speed of motors. By increasing motor speeds, higher output can be achieved without increasing size, and smaller motors can be produced without compromising on output. Miniaturization and speed increase of motors are expected to evolve further in a variety of fields, including in terms of energy saving.
Motor Analyzer EMA-100 and Load Tester EMM-100M are instruments to measure torque and speed performance of ultra high speed motors. Through its newly developed small-diameter, low-inertia hysteresis brake unit (patent pending), it realizes max. speed of 120,000 RPM and max. torque of 100 mN・m with the hysteresis brake dynamometer system which is known for its convenient torque control.
The highly accurate motor holding unit and novel coupling (patent pending) allow for alignment and shaft coupling that can withstand high RPM, enabling simple and safe measuring.
In the dedicated motor holding unit, motor XYZ positioning is micron-adjustable while keeping it parallel to the load tester shaft. The motor shaft is aligned to the load tester shaft using an alignment jig (comes with the coupling), and they are connected using a conveniently operated dedicated coupling.
Measurement conditions are set using the buttons on the touch panel or on the dedicated Windows software. Because of our long-established brake control system, no complex PIDC control parameter configuration is required.
Auto Mode and Manual Mode are available for measurement.
Auto Mode
< Configuration with control points>
Torque control / speed control / TS control (*1)
: measurement points are set between the Start value and End value (torque or speed).
Torque control / speed control / brake control
: measurement period of time is set until the target value (torque / speed / braking (%)) has been achieved.
In Manual mode, control values are directly entered using CONTROL commands.
After completing the configuration, rotate the motor. Click the START button, then Load control is performed in line with the configured sequences, and the measured data are displayed.
Twenty two parameters are measured, including time (t), speed (S), power (P*), voltage (E*), current (I*), efficiency (n*), and power factor (f*). The screen displays a maximum of 12 parameters simultaneously, in real time.
Measurements and graphs are saved using dedicated Windows software. The machine can also be operated using the software.
(*1) TS control: a method where torque control is performed during synchronous rotation of the motor, and speed control is performed after motor step-out.
Testing services for your high speed motors are available.
Maximum speed | 120,000 r/min |
---|---|
Rotational speed accuracy | ±0.01 % + 1 digit |
Rated torque | 100 mN・m |
Torque accuracy | Rated torque ± 0.5 % |
Braking system | Hysteresis brake |
Power absorption | Continuous: 80 W Within 10 s: 600 W Within 5 s: 1000 W |
External diameter of mountable motor | Diameter 10–60 mm |
Motor shaft diameter | 3~5 mm |
Measurement parameters |
t [sec]: time T [mN・m, N・m]: torque S [r/min, kr/min]: speed Po/Pi/Pe [mW, W, kW]: output power / input power / supply power E0/E1/E2/E3/E4/E5 [mV, V, kV]: voltage for the measurement modules I0/I1/I2/I3/I4/I5 [mA, A, kA]: current for the measurement modules no/ne [%]: motor output efficiency / driver output efficiency fi/fe [%]: motor input power factor / driver input power factor |
Power supply | AC100-240 V±10 V,50/60 Hz |
Dimensions (W × H × D), Weight | EMM-100M:230×250×400 mm, 16.5 kg EMA-100:315×218×400 mm, 14 kg |