Three-phase servo-drive SV670

ACpermanent magnetbrushed

Introduction
The SV670 servo drive is the central control unit for high-precision rotary actuators, converting command inputs into current outputs to control position, speed and torque. Designed for motion-control applications requiring high dynamic response and positioning accuracy, it supports fully digital control algorithms, real-time monitoring and networked integration for multi-axis systems.

Structural characteristics

• Modular architecture with integrated high-resolution encoder support and intelligent power modules (IPM) for compact footprint and enhanced EMI resistance.
• Supports multiple motor types including AC permanent-magnet synchronous motors and DC servo motors.

Control algorithm

• Vector-based triple-loop control (current/speed/position) implemented on DSPs to optimize dynamic response and stability.
• Complex control logic with support for remote debugging and network communication.

Performance highlights

• Micron-level positioning: high-resolution encoder feedback for sub-micron repeatability.
• Fast response: low electromechanical time constant enabling millisecond-level start/stop and direction reversal.
• Wide speed range: supports high-torque low-speed and light-load high-speed operation with speed ratio >1:5000.

Adaptability

• Standard interfaces supported: EtherCAT, CANopen, CANlink and pulse input types for PLC/system integration.
• Built-in soft-start, overvoltage and overcurrent protection to reduce startup surges and failure risk.

Features

• High-efficiency control: torque-dense design with regenerative braking achieving >90% energy efficiency.
• Superior dynamics: full-digital control enabling <1 ms response for complex motion profiles.
• Safety redundancy: dual closed-loop verification (encoder + sensor) and fault self-diagnostics.
• Environmental resilience: high-temperature components and dust-resistant coatings for operation from -20°C to 70°C.

Specification table (selection)
Series mapping and model variants (column values separated by | ):
Header: Series | Series Type (N/P/A/C) | Voltage Code (S/T) | Rated Current | Universal Type | Protection / Function Codes
Legend: N: EtherCAT; P: Pulse Type; A: CANlink Type; C: CANopen Type | S: 220V; T: 380V

220VAC group:
220VAC | SV670 | N | S | 1R6 | I | -
SV670 | N | S | 2R8 | I | -
SV670 | N | S | 5R5 | I | -
SV670 | N | S | 7R6 | I | -
SV670 | N | S | 012 | I | -
SV670 | N | S | 018 | I | -
SV670 | N | S | 022 | I | -
SV670 | N | S | 027 | I | -

380VAC group:
380VAC | SV670 | N | T | 3R5 | I | -
SV670 | N | T | 5R4 | I | -
SV670 | N | T | 8R4 | I | -
SV670 | N | T | 012 | I | -
SV670 | N | T | 017 | I | -
SV670 | N | T | 021 | I | -
SV670 | N | T | 026 | I | -

Technical specifications

• Product series: SV670
• Supported control modes: position, speed, torque (vector triple-loop)
• Control algorithm: vector-based triple-loop implemented on DSP
• Encoder feedback: high-resolution encoder for sub-micron repeatability
• Supply options: 220VAC and 380VAC variants
• Interface support: EtherCAT, CANopen, CANlink, pulse input
• Protection/options: FH — High Protection; FS — Functional Safety Model (STO only)
• Performance: <1 ms response, speed ratio >1:5000
• Efficiency: >90% with regenerative braking
• Safety: dual closed-loop verification (encoder + sensor), fault self-diagnostics
• Operating range: -20°C to 70°C; dust-resistant coatings and high-temperature components
• Built-in protections: soft-start, overvoltage and overcurrent protection