The YASKAWA SGD7S-2R8A10A Servopack is a single-axis Sigma-7 series AC servo drive designed for applications that demand fast response, repeatable positioning, and compact installation. It is intended to work with Sigma-7 servo motors in the lower power range, making it an excellent choice for light-to-medium duty axes in packaging, assembly, electronics, and general machinery.
Compared with earlier generations of Yaskawa drives, the SGD7S-2R8A10A emphasizes higher control bandwidth, better mechanical resonance suppression, and simplified setup. This combination allows machine builders to reduce cycle time, increase machine accuracy, and shorten commissioning time, all while staying within a small control cabinet footprint.
Where tight motion tolerance, short tact times, and long-term reliability are required, this Servopack provides a robust foundation for a high-performance axis.
The table below summarizes typical characteristics and functional positioning of the YASKAWA SGD7S-2R8A10A in an industrial control system. Exact numerical ratings (voltage, current, motor capacity) must always be confirmed from the official Sigma-7 documentation and the matched motor datasheet.
| Item | Description |
|---|---|
| Model | YASKAWA SGD7S-2R8A10A Servopack |
| Product Family | Sigma-7 AC Servo Drive |
| Axis Type | Single-axis servo amplifier (SGD7S type) |
| Typical Motor Class | Low-capacity Sigma-7 servo motors (small power range, suitable for compact axes) |
| Control Modes | Position control, speed control, torque control (depending on system configuration) |
| Feedback Interface | High-resolution encoder from Sigma-7 motors (absolute or incremental, model dependent) |
| Input Power | Industrial AC mains (exact voltage and phase configuration per official manual) |
| I/O Interface | Standard digital I/O and command inputs; pulse train, analog, and reference signals (depending on configuration) |
| Network / Fieldbus | “10A” variant indicates a specific interface option; suitable for integration with modern control systems (check Yaskawa documentation for exact bus type) |
| Application Focus | Precise motion axes in compact machinery and multi-axis systems |
The SGD7S-2R8A10A brings together several important capabilities that make it attractive for high-end motion systems:
High dynamic response
The control algorithms inside the Sigma-7 platform enable high loop bandwidth. This allows the axis to follow command changes quickly and resist disturbances from load variation or external forces. In real machines this translates into:
Shorter move and settle times
Higher throughput for repetitive pick-and-place or indexing operations
More accurate contouring in coordinated multi-axis applications
High-resolution feedback integration
When paired with a Sigma-7 servo motor, the Servopack utilizes a very fine-resolution encoder. Benefits include:
Smooth, ripple-free motion even at very low speeds
Excellent repeatability for micro-positioning tasks
Stable speed regulation over a wide operating range
Resonance and vibration control
The drive is equipped with vibration suppression and resonance compensation tools. These are especially valuable in:
Lightweight or flexible mechanical structures
Long arms, slender shafts, or belt-driven axes
Applications where residual vibration previously limited speed
Auto-tuning and easy commissioning
Built-in auto-tuning functions help determine optimal gain values based on the actual load. This reduces the need for manual parameter trial-and-error and makes it easier for non-specialists to obtain stable, responsive motion.
The “10A” suffix indicates that the SGD7S-2R8A10A Servopack is configured with a specific communication/control interface variant within the Sigma-7 family. While the exact fieldbus or network type must be confirmed from the official catalog, this variant is typically intended for tight integration with advanced motion controllers and PLCs.
| Aspect | Description |
|---|---|
| Command Interface | Support for high-speed reference commands (position, speed, or torque) from a controller or PLC |
| Network Connectivity | “10A” option tailored to a particular communication standard, allowing short update cycles and synchronized motion in multi-axis systems |
| I/O Functions | Digital inputs and outputs for enable, alarm reset, limit switches, home sensors, and other basic machine signals |
| Motion Profiles | Suitable for point-to-point indexing, interpolated motion (when coordinated by a controller), and complex profiles such as cams or electronic gearing (system dependent) |
| Diagnostics | Status bits, alarms, and monitoring values available for reading by the host controller and via engineering tools |
This combination of real-time communication and rich diagnostics makes the SGD7S-2R8A10A well suited for modern, network-centric automation architectures.
The YASKAWA SGD7S-2R8A10A Servopack follows the familiar book-style format of Sigma-7 drives, optimized for tight control cabinets:
| Mechanical / Installation Item | Details |
|---|---|
| Housing | Slim, vertical, book-type form factor for side-by-side mounting |
| Mounting Method | Typically panel-mounted in a control cabinet according to Yaskawa guidelines |
| Cooling | Heat dissipated mainly via heatsink and rear surface; cabinet airflow or cooling must be considered in design |
| Wiring | Clearly separated power terminals, motor output, encoder feedback, control I/O, and communication connectors |
| Environment | Intended for industrial environments when properly installed inside a suitable enclosure, within specified temperature and humidity limits |
The compact structure allows multiple Servopacks to be arranged closely together, which is especially useful in machines with many small axes, such as packaging lines, electronic assembly machines, or compact material handling systems.
The SGD7S-2R8A10A is not a “big power” drive; it is optimized for smaller servo axes that still need premium motion performance. Typical uses include:
Electronics and assembly equipment
Pick-and-place heads
Fine pitch component positioning
Small XY stages and alignment axes
Packaging and labeling machinery
Film feeding and sealing axes
Small conveyor sections with precise indexing
Label dispensing and registration corrections
Light mechanical systems
Compact manipulators and gantries
Test benches for sensors or small parts
Fine positioning mechanisms in inspection machines
General automation
Actuators for positioning stops, pushers, and feeders
Motion axes in laboratory or process equipment
Any application where space is limited but precision is critical
In these scenarios, users gain the advantage of high-end servo performance without moving to a physically larger drive.
From both the machine builder’s and the end user’s perspective, the YASKAWA SGD7S-2R8A10A offers several tangible advantages:
Higher productivity
Faster motion combined with accurate stopping positions enables shorter cycle times and greater output per hour, particularly in multi-axis systems.
Consistent product quality
Smooth, repeatable movement reduces variations in cutting, forming, dispensing, or placement. This results in more stable product dimensions and better process capability indices.
Simplified design and commissioning
Auto-tuning and clear parameter structures reduce engineering effort.
Reusing tuned settings across similar machines becomes easier.
Network integration through the selected communications interface facilitates centralized control strategies.
Lower long-term cost of ownership
Stable servo control reduces mechanical stress on belts, couplings, and gearboxes.
Reliability of Yaskawa servo products is well established in the automation industry, helping to reduce unplanned downtime.
Built-in alarms and monitoring help maintenance teams diagnose issues before they become critical failures.
Scalability in multi-axis systems
Because of its slim format and network-oriented interface, the SGD7S-2R8A10A scales smoothly from a single axis to dozens of axes sharing the same control platform, which is very attractive for OEMs building entire machine families.
To fully exploit the capabilities of the SGD7S-2R8A10A Servopack, a few key engineering points must be respected:
| Topic | Recommendation |
|---|---|
| Motor Selection | Match the drive with a Sigma-7 servo motor whose electrical and mechanical ratings correspond to the drive’s capacity and the axis load. |
| Power Infrastructure | Design the power distribution, protective devices, and grounding scheme according to Yaskawa’s installation requirements and local standards. |
| EMC and Noise | Use proper shielding, cable routing, and grounding practices to avoid communication or feedback errors. |
| Safety | Implement external safety circuits (emergency stop, contactors, safety relays) in line with machine safety standards. |
| Thermal Management | Ensure cabinet temperature remains within the specified limits; consider ventilation or cooling units if needed. |
| Controller Integration | Choose a PLC or motion controller with compatible communication and motion functions to fully utilize the “10A” interface option. |
Attending to these design points ensures that the drive operates within its intended envelope and delivers stable, long-term performance.
The YASKAWA SGD7S-2R8A10A Servopack is a compact yet highly capable Sigma-7 AC servo drive tailored for low-capacity axes that still demand top-level precision and speed. By combining:
High dynamic response
High-resolution encoder support
Advanced tuning and vibration suppression
Network-oriented “10A” interface for modern controllers
Slim book-type mechanical design
it gives machine builders a powerful axis solution for advanced automation projects.
When correctly paired with Sigma-7 motors and integrated into a well-designed machine, the SGD7S-2R8A10A helps increase productivity, improve product consistency, and reduce maintenance effort, making it a strong candidate for the next generation of high-performance industrial equipment.
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