SP10300-105A2 by Kollmorgen

The SP10300-105A2 is a digital servo amplifier manufactured by Kollmorgen for the SP Servostar Servo Drives series. The drive converts rectified mains power into a pulse-width-modulated output that closes the current loop of a permanent-magnet servomotor. By tracking command signals from a higher-level controller, it maintains accurate motor torque and velocity, making it suitable for packaging machinery, pick-and-place axes, and other industrial automation tasks.

At a DC bus voltage of 160 VDC, the amplifier can supply a continuous phase current of 3 A RMS, providing a sustained mechanical output of 0.55 kW on 115 VAC lines and 1.1 kW when powered from 230 VAC mains. For short acceleration bursts, it delivers a peak current of 6 A RMS for two seconds before returning to nominal limits. The output bridge operates at a carrier frequency of 16 kHz, while internal current ripple is shaped around 32 kHz to reduce motor noise and torque ripple. A dedicated 0.2 A logic rail powers the control electronics independently of the bus, minimizing disturbances caused by load changes.

The command interface is configured for ±10 V analog references. With an input sensitivity of 0.85 A/V, every volt of command produces 0.85 A of regulated phase current. Feedback enters the controller with a proportional gain of 1.06 A/V, allowing the current loop to compare measured and commanded values without external scaling networks. Power for the front-end circuits is furnished by an 8 V logic rail, while the analog section draws 200 mA separately. Heat generated by the switching and control components amounts to 37 W, so adequate panel ventilation is required. An internal hardware monitor disconnects the drive from the DC link if its voltage exceeds the 430 VDC overvoltage limit, protecting the semiconductors and connected motor from transient energy surges.