Glentek’s SMA6520 series linear servo drives provide the optimum solution for applications which require high current loop bandwidth, low radiated electrical noise, and zero crossover distortion. These drives incorporate our latest generation ISO-BIAS current sense technology, which results in one of the lowest drift linear drives on the market today. These drives are constructed using surface mount technology and incorporate the latest in heat transfer technology which make them one of the most powerful drives for a given form factor. Typical applications which are ideal for the SMA6520 series linear drives include low inductance/resistance brushless motors (linear or rotary) and high resolution air bearing linear brushless motor stages.
The SMA6520 series is highly configurable and can operate in the following commutation modes:
Note: Voice coil and DC brush modes are also available upon request.
Command/Control Modes |
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+/-10 VDC for current (torque) |
+/-10 VDC for velocity (RPM) |
Feedback |
Analog tachometer (required for velocity control) |
Dedicated Inputs |
Single-ended or differential signal command, tachometer, +/- limits, inhibit/enable, fault, reset |
Motor temperature and master slave (SMB7200 series only) |
Dedicated Outputs |
Motor current, fault, low-speed electronic circuit breaker, high-speed electronic circuit breaker, over-voltage, and over-temperature |
Performance | |
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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. |
Electrical Ratings |
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Input Voltage: +/-20 to +/-55 Bipolar VDC for standard voltage drive modules. +/-25 to +/-75 Bipolar VDC for high voltage drives modules. 14-39 VAC from transformer with center tap for multi-axis packages. Non-standard voltages available upon request. |
Continuous Output Current: 10 A |
Continuous Power Output: 400-500 W |
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% derating |
Special Operating Temperature: -40°C to 40°C without current derating, up to 50°C with 25% derating |
Humidity: 5% to 95% relative humidity, non-condensing |
Altitude: Up to 1000m without derating, derate current 10% per 1000m above 1000m |