Find an Analog Drive:
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Command
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Notes:
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Analog Command
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+/-10V analog command has been the industry standard in industrial motion control for over 25 years.
Compatible with most controllers. Torque, Voltage and Velocity mode are available.
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Sinusoidal Input
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Sinusoidal Input is a specialized type of command that requires a compatible controller.
Direct control of the sine commutation gives your high performance controller more control. Two sinusoidal command signals from your controller control the commutation and torque of the motor.
These drives excel in high bandwidth and ultra smooth applications.
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PWM Input
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PWM & Direction input is a specialized type of command that requires a compatible controller. Your controller needs two high speed digital outputs to control these drives. The PWM duty cycle corresponds to the magnitude of the output.
These drives have the fastest response times by far! Direct control of the PWM switching puts response in the sub-microsecond range. You heard that right, we're talking nanoseconds!
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Analog Drive Performance
DSP's are fast, but op-amps are faster! As technology continues to shift from analog to digital, we still find strong support for analog designs. Analog drives provide some attractive benefits including:
- Simplicity - It's easy to train your people to set the correct switch and potentiometer settings.
- Proven Track Record - AMC has been building analog drives since our inception. We have continuously improved our designs to mirror the advances in component technology.
- Performance - When tuned to maximum performance, analog current loops can achieve higher bandwidth and faster response than any digital current loop (including AMC and any other brand).
How can analog performance beat digital? It all comes down to the components. In a digital system, A/D conversions and processing time can add a delay from 30 to 100 microseconds. This may not seem like a lot, but in ultra high bandwidth systems delays of this magnitude create a sizeable phase lag.
Many applications don't need this high performance, so the other driving factor is cost. Large volumes and mature designs make prices attractive for everyone (except our competitors).
  
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