Product Description:

The S30301-NA-ARM9 is a servo drive produced by Kollmorgen as part of the S300 Servo Drives series. Acting as a compact closed-loop power stage, it modulates three-phase output to control brushless servo motors in assembly cells, packaging machines, and other coordinated motion axes. The unit receives command data from higher-level controllers, regulates motor current, and integrates safety and braking functions so that precise position and velocity control can be implemented without discrete power electronics.

The drive communicates through the CANopen onboard fieldbus for motion commands and status data. It accepts a three-phase AC input of 208...480 V, rectifying the supply to a DC link. A current form factor of 1.01 keeps motor current nearly sinusoidal. The continuous output is 3 A rms, suited to mid-frame servo motors. IGBTs switch at 8 kHz to balance dynamic response and switching loss. Regenerative events may lift the bus to 900 VDC, a level accommodated by built-in capacitors. The integrated STO (Safe Torque Off) circuit disables gate signals when an emergency stop is requested. Residual voltage drop is 5 V, and motors must present at least 10.7 mH of inductance at 480 V for stable control. The enclosure measures 279 mm × 70 mm × 171 mm and draws 2.5 kVA at rated load while idling at 12 W.

Thermal performance at full capacity results in a loss of 60 W, which must be removed through panel cooling hardware. An internal brake resistor of 91 Ohm is fitted; its continuous rating is 50 W and its short-term limit reaches 9 kW, allowing the unit to absorb regenerative energy during abrupt stops without an external chopper. The drive counts energy pulses and suspends braking if the 50 W average is exceeded to protect the resistor. Remaining semiconductor losses stay within the cooling budget, so standard forced-air panels suffice for typical ambient temperatures in production cells.