QS1C05AA Sanyo Denki
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The QS1C05AA is a servo amplifier manufactured by Sanyo Denki and is part of the Q SANMOTION Servo Amplifiers series. It features an amplifier capacity of 50 Amps and operates on a main circuit voltage of AC200-230 V with a control system based on IGBT PWM sinusoidal drive. This amplifier supports speed, torque, and position control functions and uses an RS-422 line driver.
Internal Product Review
The QS1C05AA is a Sanyo Denki Q SANMOTION servo amplifier with Speed/Torque/Position control and an IGBT PWM sinusoidal drive system. A 50 A amplifier capacity and AC200-230 V main circuit rating support stable response in demanding motion applications. RS-422 line driver connectivity adds valuable integration flexibility for multi-axis systems.
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Product Description:
The QS1C05AA belongs to the Q SANMOTION Servo Amplifiers series produced by Sanyo Denki. This AC amplifier drives matched servo motors in industrial automation systems and regulates speed, torque, or position loops so a machine controller can execute precise motion profiles. By converting fixed-frequency mains power into a pulse-width-modulated output, the unit supplies the current required for dynamic acceleration without mechanical relays or contactors.
The power stage is rated for an output capacity of 50 A, giving the drive headroom for rapid motor transients while remaining within thermal limits. It accepts a main circuit voltage of 200–230 VAC at an input frequency range of 50/60 Hz ±3 Hz; these values match common three-phase plant supplies and avoid the need for step-down transformers. Inside the amplifier, an IGBT PWM sinusoidal drive topology shapes the motor current into a near-sine waveform that minimizes torque ripple and audible noise. Feedback and command signals are exchanged through a differential RS-422 line driver, reducing susceptibility to electrical noise over long cable runs. The control function menu supports speed, torque, and position modes. Analog references include a speed command of DC ±2.0 V with an upper limit of DC ±10 V, while a separate torque command path uses DC ±2.0 V so the host controller can switch control strategies without rewiring.
For closed-loop monitoring, the amplifier outputs a current feedback signal of 2.0 V ±10% and a speed monitor signal scaled at 2 V ±20% per 1,000 rpm, allowing drive status to be graphed through standard analog inputs. Protective leakage current is limited to 1.5 mA, keeping cabinet touch current below applicable safety thresholds. A host computer can poll parameters through an asynchronous link set to 9600 bps; each transmission uses eight frames with a frame length of 11 bits for compatibility with legacy motion controllers. When mechanical limits must be enforced, the torque ceiling can be adjusted with a reference of 2.0 V per rated torque, providing linear scaling from no load to full-rated output.
