The SMA6520-50HS Linear Brushless Servo Drive in the Module package configuration operates from +/-20 to +/-55 Bipolar VDC and can output up to 10 A of continuous current. Linear Brushless Servo Drives provide the optimum solution for applications which require high current loop bandwidth, low radiated electrical noise and zero crossover distortion. This series is highly configurable and can operate in external sine commutation, trapezoidal commutation, or encoder-based sinusoidal commutation modes.
| The SMA6520 series is highly configurable and can operate in the following commutation modes: |
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| 1. External sine commutation (2-phase current mode) of three-phase brushless servo motors. In this mode, the drive accepts two +/-10 VDC analog inputs as a current command reference for two of the motor phases. The third phase is derived within the drive from the two reference phases. This drive does not require any feedback devices and is used with controllers that provide the commutation. |
| 2. Trapezoidal commutation of three-phase brushless servo motors. In this mode, the drive accepts a +/-10 VDC analog input as a current command reference and utilizes the Hall Sensors which are mounted on the motor for commutation of the motor in current (torque) mode. |
| 3. Encoder-based sinusoidal commutation of three-phase brushless servo motors. In this mode, the drive accepts a +/-10 VDC analog input as a current (torque) or velocity (RPM) command reference and sinusoidally commutates the motor by Hall Sensors or encoder commutation tracks and an incremental encoder. Note: This version can operate without Hall Sensors or encoder commutation tracks by using Glentek's “twang mode” initialization. |
| Command/Control Modes |
| +/-10 VDC for current (torque) |
| +/-10 VDC for velocity (RPM) |
| Feedback |
| Incremental quadrature encoder |
| Digital Hall sensors or commutation tracks from encoder |
| Dedicated Inputs |
| Trapezoidal and Encoder-based versions: +/- limits, enable, fault, motor over temperature, and reset |
| 2-phase sinusoidal versions: Enable, fault, motor over temperature, and reset |
| Dedicated Outputs |
| Fault out |
| Environmental Conditions |
| Storage Temperature: -40°C to 80°C |
| Standard Operating Temperature: 0°C to 40°C without current derating, up to 50°C with 25% current derating |
| Special Operating Temperature: -40°C to 40°C without current derating, up to 50°C with 25% current derating |
| Humidity: 5% to 95% relative humidity, non-condensing |
| Altitude: Up to 1000m without derating, derate current 10% per 1000m above 1000m |
| Performance | |
|---|---|
| Bandwidth | All servo drives have a nominal 10kHz current loop bandwidth which varies with the motor inductance. |
| Linear output stage | Provides high bandwidth, low noise, and zero crossover distortion. |
| Multimode operation | The 2-phase sinusoidal current mode servo drive can drive 3-phase brushless servo motors in current (torque) mode. The Trapezoidal servo drive can drive 3-phase brushless servo motors in current (torque) mode and can close the velocity loop via feedback of a DC tachometer. The encoder-based sinusoidal servo drive can drive 3-phase brushless servo motors in current (torque) or velocity (RPM) mode. |
| Current limit | Peak motor current is adjustable. |
| Regulatory | |
| RoHS Compliant | RoHS compliance optional. |
| CE Marked | All servo drives are CE marked. |
| Feedback | |
| Hall sensors or commutation tracks | Accepts Hall sensor feedback or commutation track signals from an encoder. |
| Encoder | Accepts quadrature encoder feedback. |
| I/O | |
| Dedicated inputs | +/- limits, enable, fault, motor over temperature and reset for Trapezoidal and Encoder-based versions. Enable, fault, motor over temperature and reset for 2-phase sinusoidal versions. |
| Motor over temp | An input is provided for a motor over temperature switch and will shutdown the drive and display a fault. |
| External fault reset | An input is provided to reset the drive in the event of a fault. |
| Build | |
| Status indicator | 7-segment LED display indicates drive status and diagnositics. |
| Fault protection | Fault protection: Short from output to output, short from output to ground, drive RMS over current, drive under/over voltage and drive over temperature. |
| Manual reset | A push button reset is available to reset a fault. |
| Industry standard mounting | Available in a standard heatsink module, large heatsink module w/fan and cover or a 2-axis chassis version. Note: Glentek offers custom mounting configurations to meet virtually any requirement. |
| Ergonomic Design | Easy access to connections, adjustments and test points. |
| SMT construction | Provides ultra compact size, cost competitive package and high reliability. |
| Series | |
|---|---|
| Package Configuration | |
| Input Voltage | |
| Continuous Current | |
| Drive Compliance | |
| Modes of Control | +/- 10 VDC for Current or Velocity, External Sine Commutation |
| Motor Types | Brushless Servo (Rotary), Brushless Servo (Linear), Brush Servo (Rotary), Voice Coil |
| Feedback Devices |
