Product Description:

The SR03000-Y015 is a servo drive produced by Kollmorgen for the SP Servostar Servo Drives series. It converts fixed-frequency AC power into controlled three-phase output power that regulates torque, speed, and position on connected brushless motors in automated machinery. Within a motion system, it provides current regulation, velocity control, and position correction while collecting rotor-angle data from a resolver to close the feedback loop.

The current stage can deliver a continuous phase current of 30 A RMS per phase and withstand short bursts of up to 60 A RMS per phase, allowing the drive to handle acceleration peaks without saturation. Commutation is synchronized with motor position at frequencies up to 400 Hz, so high-speed spindles or rapid pick-and-place axes remain within the drive’s electrical limits. The current loop is refreshed every 62.5 µs (16 kHz), while velocity regulation is recalculated every 250 µs (4 kHz). These short cycles minimize the delay between a command and the resulting torque. Internally generated output waveforms are sinusoidal, reducing harmonic heating in the motor and lowering audible noise during operation.

Higher-level motion commands are processed every 500 µs (2 kHz), matching PLC scan rates used in coordinated multi-axis lines. Two optically isolated digital outputs can each source up to 60 mA for status lamps or brake relays. A form C fault relay rated at 1 A at 24 VDC provides a hardwired shutdown signal to external safety circuits. The unit weighs 5.2 kg, allowing installation in midsized control panels without exceeding common mounting load limits. The resolver interface supplies a drive current of 55 mA and an excitation voltage of 4.25 VAC. It accepts a return amplitude of 2 VAC, operates with a 0.47 ratio, and supports winding resistance of up to 120 Ω. These resolver interface values help maintain clean rotor-angle feedback over long motor cables.