Product Description:

The S20350-VTS is a servo drive produced by Kollmorgen within the S200 Servo Drives series. It is intended for closed-loop control of brushless servomotors in industrial automation where precise torque or velocity regulation is required. By modulating motor current from a dedicated DC bus, the unit allows machinery such as indexers, pick-and-place axes, and light-duty conveyors to follow command profiles accurately while maintaining stable thermal and electrical loading.

During continuous operation, the drive can supply 750 W while delivering a phase current of 3 ARMS. Energy is drawn from a DC link held at 320 VDC, which is created by rectifying and doubling the AC input. The front end accepts 120 VAC doubler or 240 VAC single-phase input, so a single-phase source can support installation without a transformer. The current loop operates at up to 3 kHz, allowing the amplifier to correct torque-producing current quickly relative to motor electrical time constants. Offset current values of 25 mA typical and 64 mA worst case show the internal bias that the controller must cancel digitally for accurate zero-torque behavior. Feedback ports accommodate SFD, Hall sensors, sine encoders, or EnDat 2.1 devices so the axis can run in velocity or torque mode with the correct scaling.

For short bursts, the drive handles a peak output of 2400 W and up to 9 ARMS to accelerate inertial loads or overcome stiction before returning to its continuous limits. Line conductors must tolerate 10 ARMS, matching the specified MDA-15 fuse that protects upstream wiring. Rapid speed regulation is aided by a velocity loop bandwidth of 800 Hz. Combined with the 600 Hz maximum motor electrical frequency, this allows the controller to execute dynamic profiles without saturating either loop. Internal protections, along with SynqNet or CAN option cards, support stable operation during transient demands.