Product Description:

The S30361-EC is a single-axis servo drive produced by Kollmorgen as part of the S300 Servo Drives series. It conditions the incoming mains and delivers controlled three-phase power to matched servo motors. Precise torque and velocity commands are coordinated through an integrated EtherCAT interface for distributed motion in automated machinery.

An auxiliary control circuit is powered from 24 VDC while drawing only 2.5 A. This low-energy rail supports logic, safety, and fieldbus electronics independent of the main power stage. The power section accepts a mains range of 110 to 230 V and can process up to 1.1 kVA of apparent power, making the drive suitable for fractional-kilowatt axes. Inside the inverter, the output transistors are clocked at 8 kHz, a switching rate that balances dynamic response with manageable switching losses. Under continuous operation, the current supplied to the motor windings is limited to 3 A RMS, which sets the continuous thermal load for connected cabling and motor windings. Two RJ-45 ports carry network traffic and enable daisy-chain topology, while an expansion slot accommodates the dedicated communication card.

During acceleration or rapid deceleration, the current ceiling rises to 9 A RMS, allowing short bursts of torque without saturating the magnetic circuit. Excess regenerative energy is dissipated by an internal brake resistor rated at 66 Ω; for one-second averages at 230 V, the resistor can absorb 0.35 kW before the thermal monitor intervenes. Drive shutdown integrity is supported by the certified STO function, which removes gate drive from the output stage to achieve torque-free motor coasting. The DC link is monitored up to 450 V, with an overvoltage trip at 455 VDC, and the design tolerates a voltage rise of 3.3 kV/µs across the output devices. For noise mitigation, the reduced-current mode shifts PWM to 16 kHz, and mechanical duty cycles are limited to 30 switching events per hour to reduce cumulative thermal cycling.