FASTECH

1. Hollow Shaft

There is a hole in the motor shaft, so it can be used for inserting cable or pipe, which provides design flexibility and convenience.

Motor size	Hollow shaft inner diameter [mm]	Hollow shaft outer diameter [mm]
20mm	Ø3	Ø5
28mm	Ø5	Ø7
35mm	Ø8	Ø10
42mm	Ø8	Ø10
56mm	Ø12	Ø15
86mm	Ø16	Ø20

2. High Resolution: The unit of the position command can be divided precisely. (Max. 20,000 pulses/revolution)

3. Closed Loop System: Ezi-SERVO is an innovative Closed Loop System that utilizes a high-resolution motor mounted encoder to monitor current position constantly. It allows the Ezi-SERVO drive to compensate for the loss of position, ensuring accurate positioning. For example, due to a sudden load change, a conventional stepper motor and drive could lose a step but Ezi-SERVO automatically correct the position by encoder feedback.

4. Supporting Various Field Network: Ezi-SERVO is a unit product that combines Ezi-SERVO, a high performance closed loop step drive. Ezi-SERVO that support field networks such as EtherCAT, Ethernet and CC-Link can be connected to master controllers such as PC/PLC through corresponding field networks. In case of Ezi-SERVOⅡ Plus-E products, motion library(DLL) for Windows 7/8/10 can be provided.

5. No Gain Tuning: To ensure machine performance, smoothness, positional error and low servo noise, conventional servo systems require the adjustment of its servo’s gains as an initial crucial step. Even systems that employ auto-tuning require manual tuning after the system is installed, especially if more than one axis are interdependent. Ezi-SERVO employs the best characteristics of stepper, closed loop motion controls and algorithms to eliminate the need of tedious gain tuning required for conventional closed loop servo systems. This means that Ezi-SERVO is optimized for the application and ready to work right out of the box. The Ezi-SERVO system employs the unique characteristics of the closed loop stepping motor control, eliminating these cumbersome steps and giving the engineer a high performance servo system without wasting setup time. Ezi-SERVO is especially well suited for low stiffness loads(for example, a belt and pulley system) that sometime require conventional servo systems to inertia match with the additimal expensive and bulky gearbox. Ezi-SERVO also performs exceptionally, even under heavy loads and high speeds.

6. Heat Reduction / Energy Saving(Motor Current Control according to load): Ezi-SERVO automatically controls motor current according to load. Ezi-SERVO reduces motor current when motor load is low and increases motor current when load is high. By optimizing the motor current, motor heat can be minimized and energy can be saved.

8. No Hunting: Traditional servo motor drives overshoot their position and try to correct overshooting by moving the opposite direction, especially in high gain applications. This is called null hunt and is especially prevalent in systems that the break away or static friction is significantly higher than the running friction. The cure is lowering the gain, which affects accuracy or using Ezi-SERVO Motion Control System. Ezi-SERVO utilizes the unique characteristics of stepping motors and locks itself into the desired target position, eliminating Null Hunt. This feature is especially useful in applications such as nanotech manufacturing, semiconductor fabrication, vision systems and ink jet printing in which system oscillation and vibration could be a problem.

9. Smooth and Accurate: Ezi-SERVO is a high-precision servo drive, using a high-resolution encoder with 20,000 pulses/revolution. Unlike a conventional Microstep drive, the on-board high performance MCU (Micro Controller Unit) performs vector control and filtering, producing a smooth rotational control with minimum ripples.

10. Fast Response: Similar to conventional stepping motors, Ezi-SERVO instantly synchronizes with command pulses providing fast positional response. Ezi-SERVO is the optimum choice when zero-speed stability and rapid motions within a short distance are required. Traditional servo motor systems have a natural delay called settling time between the command input signals and the resultant motion because of the constant monitoring of the current position.

11. High Torque: Compared with common step motors and drives, Ezi-SERVO motion control systems can maintain a high torque state over relatively long period of time. This means that Ezi-SERVO continuously operates without loss of position under 100% of the load. Unlike conventional Microstep drives, Ezi-SERVO exploits continuous high torque operation during high speed motion due to its innovative optimum current phase control.

12. High Speed: The Ezi-SERVO operates well at high speed without the loss of synchronism or positioning error. Ezi-SERVO’s ability of continuous current position monitoring of enables the stepping motor to generate high torque, even under a 100% load condition.