EDB-08APA Estun AC Servo Drive

The Estun EDB Series AC Servo System is designed to meet various general purpose applications, with a power range from 750W to 5kW. Mature servo software control technology and hardware design leads to high performance. Features include high overload capacity, auto disturbance rejection, control flexibility, single axis positioning, a windows-based software and RS422/485 communications.

The EDC series is designed for cost-effective applications with step and direction control. Composing software by C language ensures high responsiveness. A palm operator is necessary to set, change or monitor the parameters. The EDC series has 8-node build-in positioning points, a windows-based software and RS232/Canopen communication.

The Estun EDB/EDC Series AC Servo System utilizes a larger capacity industrial grade intelligent power modules (IPM) than a normal servo with the same power capacity. Therefore, they have stronger overload capacity, higher disturbance rejection capacity and larger startup torque. The servo drives assure three times overload capacity for types below 1.5Kw and 2.5 times above 2Kw at rated speed.

A high speed DSP is used to meet the control requirements of high speed, high precision servo. With its auto disturbance rejection control and speed observation control algorithm, combined with compensation servo delay's forward-feedback control, reference smoothing technique, the Estun EDB/EDC Series AC Servo System has much better dynamic features and stabilities than those with conventional PI control. The EDB/EDC Series real fast response, high precision, high speed and high stability are realized. In addition, being equipped with automatic inertia identification, it makes adjustment operations easier.

CAN bus interfaces have been manufactured in the EDC Series which makes it easy to get integrated into a distributed control system. Based on Modbus Protocols of RS485 or RS232 interfaces, the host can be connected up to (32) servos for network control & the transmission distance can reach 1200 meters in maximum (if RS485 interface is used). Besides, the host can also communicate with PLC, DCS, intelligent instruments, touch screen and so on for centralized monitor.

Position control, speed control and torque control are combined all in one in the EDB Series. It's available to switch dynamically among different control modes and operation is more convenient and flexible.

The 16-node single axis positioning function is built inside the servo drives, and a touch screen can be connected directly to the RS-232 interface on the servo drives. Thus the cost is more effective since an intermediate PLC unit is eliminated. With the touch screen, users may easily program every node's position, speed, acceleration, deceleration time, latency time, start point and stop point, moreover, the above info can be transmitted to the servo drive via RS-232 interface. Users may select to program absolute values or incremental values and select cycle run or not. Users may also use a reference point search function and program the go and back speed for reference point search and it's also available to use external signals for step changes. Users may develop their own application programs to meet different demands on different occasions.