Product Description:

The QS1A05AJ0290MB00 servo amplifier is produced by Sanyo Denki within the Q SANMOTION Servo Amplifiers series. Designed for industrial automation, it interfaces between motion controllers and three-phase motors. The amplifier provides regulated current and built-in protective functions that allow equipment to reach commanded speeds and torques with repeatable accuracy.

The amplifier has a rated capacity of 50 A, indicating the peak phase current the drive can supply to the motor windings. That output is generated by an IGBT PWM sinusoidal drive stage, a switching topology that minimizes harmonic distortion and improves servo stiffness. Regenerative energy is dissipated through a built-in resistor with a resistance of 17 Ω, and the dynamic-brake circuit engages after a 10 ms delay following a fault to limit uncontrolled coasting. The brake resistor can absorb up to 1800 J before thermal cutoff, protecting the DC bus during rapid deceleration. Current feedback is presented to external diagnostic equipment at a scaled voltage of 2.0 V for 100% output, while the incoming control current limit is 40 A (0-P). Motor leakage current is held at 1.5 mA to meet protective grounding guidelines, and the unit has a mass of 2.2 kg for cabinet mounting.

The velocity-loop frequency response reaches 600 Hz, allowing rapid disturbance rejection during demanding motion cycles. The amplifier accepts main-power current pulses of 18 A (0-P) and can track command inputs arriving at a maximum rate of 5 Mpps, so high-resolution encoders and fine-positioning tables remain synchronized. Speed regulation extends across a 1:5000 control range, while the analog speed monitor outputs 2.0 V for every 1,000 rpm of motor shaft velocity. Regeneration and dynamic-brake components are internally wired, simplifying connections to the DC bus, logic supply, and feedback devices.