Ring Servo Drivers – Power Core for Robot Joints

Product Specifications – Overview 1. Power Supply & Motor Supply Voltage: 48 VDC Supported Motors: 50–800 W servo motors 2. Communication Protocol EtherCAT: Supports high‑speed real‑time industrial Ethernet communication (2 EtherCAT ports) 3. Control & Drive Performance Brake Control: Supports PWM‑controlled brake (1 brake interface) Torque Sensing: Supports 2 analog torque sensor inputs, suitable for force‑control applications Vibration Suppression: Built‑in multiple high‑performance vibration damping algorithms for smoother operation Full Closed‑Loop Control: Supports dual absolute encoders for high‑precision full closed‑loop position control (2 encoder input ports)

Safety Functions

• STO (Safe Torque Off): Equipped with 2 STO input interfaces to meet safe stop requirements, ensuring equipment and personnel safety

5. I/O Interface Summary

6. Mechanical Design Highlight

• Internal Through‑Hole Design: Facilitates internal wiring, simplifies cable routing, and saves installation space

7. Customisation Services

• Supports more non‑standard customisation needs; hardware and firmware can be flexibly adjusted according to specific application requirements

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Series EtherCAT Version – Hardware Function Specification Table

Driver Model	DR-EC4805-60	DR-EC4810-70	DR-EC4815-70	DR-EC4820-115
Product Image
Input Voltage (VDC)	48V±10%
Rated Current (Arms)	5	10	15	20
Peak Current (Arms)	15	30	45	60
Continuous Power (W)	128	256	566	800
Inner Hole Dimension (mm)	Φ10	Φ15	Φ15	Φ24
Outer Diameter (mm)	Φ54	Φ66	Φ66	Φ100
Interface Configuration	Unified specifications for all models
Analog Input Voltage	2 channels (0-5V)
Analog Resolution	12bit
Brake Output Control	PWM
STO	independent channels
Encoder Interface	2-channel differential, absolute type
Insulation Resistance	10MΩ (>1MΩ under high temperature & high humidity environment)}
Over-temperature Protection	85°C

Robotic Servo Ring Drive

Product Overview

The Robotic Servo Ring Drive is a high-performance servo drive unit specifically engineered for robotic joints, automation equipment, and precision machining applications. Featuring a ring-shaped hollow integrated design, it perfectly accommodates integrated joint architectures, making it an ideal choice for collaborative robots, humanoid robots, quadruped robots, and more.

The drive supports major industrial bus protocols including EtherCAT, CANopen, and CANFD, integrates dual high-resolution absolute encoders, incorporates a high-performance three-loop vector control algorithm, and provides full-spectrum vibration suppression. It is fully capable of meeting the demanding transmission requirements of robotic joint applications.

OEM & ODM Customization Services

We offer complete OEM/ODM customization for the Robotic Servo Ring Drive:

• Hardware Customization – External dimensions, hollow diameter, interface definitions, and power ratings can be tailored to your requirements.

• Software Customization – Control algorithms, communication protocols, and firmware functions can be developed specifically for your application.

• Integrated Solutions – We can provide one-stop joint module solutions combining frameless motors, encoders, gearboxes, and our ring drives.

Application Scenarios

Mainly applied to collaborative robots, humanoid robots, quadruped robot dogs and rehabilitation robots.