Servo-amplifier Yaskawa Electric America

Yaskawa Sigma and LEGEND servo amplifiers have all-digital architecture with 32-bit microprocessor logic, high speed ASIC current-loop control, and IGBT power sections.


All Sigma and LEGEND amplifiers have serial encoder feedback with automatic motor recognition, expansion ports for addition of single-axis controls and network interfaces, separate main and control power connections, scalable encoder retransmission, sine-coded PWM output waveforms, full thermal overload protection of the motor, and UL, CE, and TUV certifications. Where required, Yaskawa amplifiers have built-in regenerative and dynamic brake resistors.


Yaskawa amplifiers are matched with Sigma motors with high-resolution serial encoder feedback to provide low velocity ripple and speed loop bandwidths exceeding 400 hz. These features allow very smoth motion at low speed, higher load-to-rotor inertia rations, and decreased setting time.

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