RSA-8A IDT Integrated Drive Mini Actuator
Compact high torque density mini actuator with integrated CANopen servo drive eliminating external drive with only 4-wire connection offering 4 cable exit options for flexible robotics installation
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Product Overview
The RSA-8A IDT mini actuator integrates a servo drive with CANopen communication into the RSA-8A actuator. Only 4 conductors needed: CANH CANL +24VDC 0VDC. 14bit absolute encoder on motor input. Gear ratios 30 50 100. Maximum torque 1.8 to 4.8 Nm. Mass 200g. Four cable exit options with standard Lemo connectors. Shaft or flange output. Control modes: Torque Velocity Position CSP CSV CST.
The RSA-8A IDT is a fully integrated rotary actuator combining servo motor, harmonic gear reducer, encoders, servo electronics, and compact mechanical packaging in a single assembly.
8 Integrated Core Components
Unlike conventional joint assemblies that require separate servo drives, external encoders, and third-party gear units, the RSA-8A IDT consolidates critical subsystems into a single bolt-on module — reducing wiring complexity and shortening integration time.
Brushless Servo Motor
Optimised for high-cycle duty in collaborative robot applications
Harmonic Gear Reducer
Strain-wave gearing in — ratios
Dual Absolute Encoders
High-resolution position feedback for precise closed-loop motion control
Integrated Servo Drive
Compact embedded control electronics for simplified system integration
Friction Brake
Integrated holding brake for gravity-loaded and safety-critical joints
Temperature Sensor
Built-in thermal monitoring for continuous-duty protection
Torque Estimation
Supports controlled motion and load monitoring without external sensors
Through-Bore Design
Enables internal cable routing and cleaner multi-axis packaging
Built-in Servo Drive & Communication Protocols
The onboard servo electronics reduce external cabinet requirements and simplify wiring. Motion control parameters can be tuned through the supported communication interfaces.
Fieldbus Protocols
- EtherCAT
- CANopen
- Modbus
- RS485 serial interface
I/O & Control Interfaces
- Analogue command input
- Pulse & direction control
- Digital I/O
- Safe Torque Off (STO)
- External feedback support on selected versions
Dual Absolute Encoder — Dual-Loop Position Control
Integrated actuator families use feedback architecture intended for accurate closed-loop motion, improved repeatability, and simplified restart after controlled power cycles.
Exact encoder architecture varies by family and model. Refer to product-specific technical data and RFQ review for confirmation.
Integrated Friction Brake
Gravity-loaded joints may require a holding brake. The RSA-8A IDT integrates brake functionality within the actuator package for simplified mechanical design.
Holding Function
Supports static load holding in gravity-loaded axes
Fast Engagement
Integrated design reduces external brake hardware requirements
Position Retention
Supports safer restart behavior after controlled stops
Safety Integration
Can be paired with STO and controller safety architecture
Robot Ready
Suitable for compact robotic and automation joint packaging
Simplified Assembly
Reduces separate brake selection and mounting work
Typical Deployment Environments
The RSA-8A IDT is suited for collaborative robot arms, humanoid joints, exoskeleton actuation systems, and precision multi-axis automation where compact integrated packaging is important.
Key Specifications
Critical performance parameters at a glance
Technical Specifications
Overview
Performance
Product Attributes
Industrial Applications
These products support advanced robotics, automation, and industrial motion systems where precision, durability, and integration quality are important.
Industrial Automation
Used in automation systems where dependable motion performance and integration quality are required.
Robotics
Supports robotic subsystems that require reliable motion, control, or feedback components.
Machine Building
Integrated into custom equipment and OEM platforms where motion-system performance matters.
Precision Equipment
Applied in specialist systems requiring stable performance, compact packaging, and dependable operation.
Material Handling
Used in handling, transfer, and positioning systems across industrial applications.
Custom Engineering
Selected for engineered systems where application-specific performance and packaging are critical.
Factory Modification & Custom Sourcing
This product supports custom configurations and equivalent sourcing
Available Modifications
- •Torque and speed ratio customization
- •Mounting interface modifications
- •Connector and wiring specifications
- •Housing and enclosure options
Sourcing Options
- •Standard product sourcing
- •Equivalent product identification
- •Replacement part sourcing
- •Volume pricing (MOQ may apply)
Request Pricing & Availability
Submit an RFQ for standard products, custom configurations, or equivalent alternatives
Frequently Asked Questions
Technical answers sourced from engineering specifications and integration guides.
The RSA-8A IDT integrates a servo drive with CANopen into the RSA-8A actuator. Only 4 conductors needed with a 14-bit absolute encoder on the motor shaft.
Have a technical question not answered above?
Our application engineers review every RFQ and respond with specification-matched recommendations.