- 1. Network Based Motion Control
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Ezi-STEPⅡ EtherCAT is stepping motor control system using EtherCAT, high speed ethernet (100Mbps Full-Duplex) based fieldbus. Ezi-STEPⅡ EtherCAT is EtherCAT slave module which support CAN application layer over EtherCAT (CoE). CiA402 Drive profile implemented. Supported modes are Profile Position Mode, Homing Mode, Cyclic Synchronous Position Mode
- 2. Torque Improvement(Motor Voltage Increasing and Motor Current Setting)
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Ezi-STEPⅡ boosts the voltage supplied to the motor by internal DC-DC Converter. The torque at the high speed is increased. In addition, it is possible to set the Run Current up to 150%, whereby the torque at low speed is increased. Torque can be improved by about 30% over the entire speed range.
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※ The torque at high speed is improved about 30%
Measured Condition : Drive = Ezi-STEPⅡ-EC-42L
Motor Voltage = 40VDC
Input Voltage = 24VDC
- 3. Microstep and Filtering(High precision Microstep function and Filtering)
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The high-performance MCU operates at step resolutions of 1.8 ° up to maximum 0.0072 ° (1/250 steps) and Ezi-STEPⅡ adjusts PWM control signal in every 50 μsec, which makes it possible for more precise current control, resulting in high-precision Microstep operation.
- 4. Software Damping(Vibration suppression and high-speed operation)
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Vibration suppression and High-speed operation (Patent pending) Motor vibration is created by magnetic flux variations of the motor, lower current from the drive due to back-emf from the motor at high speeds and lowering of phase voltages from the drive. Ezi-STEPⅡ drive detects these problems and the MCU adjusts the phase of the current according to the pole position of the motor, drastically suppressing vibration. This allows the smooth operation of the motor at high speeds.
- ※ This is real measured speed that using 100,000 [pulse/rev] encoder.
- 5. Improvement of High-Speed Driving
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Depending on the speed of a stepping motor, Ezi-STEPⅡ automatically increases the supply voltage and prevents the torque lowering due to the low operating voltage to the motor caused by back-emf voltage, this enables high-speed operation. Additionally, the software damping algorithm minimizes the vibration and prevents the loss-of-synchronization at high-speed.
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※ Applicable model
Ezi-STEPⅡ-EC-42 series
Ezi-STEPⅡ-EC-56 series
Ezi-STEPⅡ-EC-60 series
