S30301-EC Kollmorgen
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The Kollmorgen S30301-EC is an S300 Servo Drive series product with a rated current of 3A rms and a rated input power of 2.5 kVA. It operates with a device input voltage range of 208 to 480V and supports EtherCAT as a communication interface. The drive features STO (Safe Torque Off) as a safety function and has a peak output current of 7.5 Arms at 480V.
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Product Description:
The S30301-EC is a Kollmorgen drive unit in the S300 Servo Drives series. Designed for panel-mounted motion systems, it regulates the torque, speed, and position of permanent-magnet or induction motors used in automated machinery. By converting three-phase mains power into a high-frequency, pulse-width-modulated output, the device provides closed-loop control that can replace mechanical camming and gearboxes in packaging lines, material-handling equipment, and pick-and-place stations.
The power stage accepts a three-phase supply between 208–480 V, allowing a single model to operate with common low- and high-voltage plant supplies. Under nominal conditions, the converter draws 2.5 kVA and delivers a sinusoidal-equivalent output of 3 Arms; brief accelerations can be supported by a peak capability of 7.5 Arms. The internal modulator switches the IGBTs at 16 kHz when operating at 50% duty, while normal switching occurs at 8 kHz to balance losses and acoustic noise. Closed-loop trajectories and parameter updates are transferred over the real-time EtherCAT interface, reducing wiring compared with analog command systems. An input current form factor of 1.01 keeps harmonic distortion low, while the minimum load inductance of 10.7 mH at 480 V helps prevent overcurrent trips.
During regenerative events, the link capacitors may rise to 900 VDC, requiring suitable component spacing and surge suppression on the DC bus. The controller’s integrated Safe Torque Off circuit is certified to SIL3 and removes gate signals within 1 ms; once the STO path is asserted, drive output torque decays to zero without mechanical relays. Steady-state thermal losses are 12 W while idle and reach 60 W at rated current, providing necessary values for enclosure ventilation planning. The output phases have a voltage slew rate of 6.9 kV/µs, and the maximum switching cycle rate is 30 operations per hour. These operating limits account for the rapid electrical response and thermal constraints associated with repetitive indexing axes.
