Product Description:

The S31061-518 servo drive is produced by Kollmorgen within the S300 Servo Drives series. It converts incoming AC power into controlled three-phase output for permanent-magnet motors, delivering the velocity, torque, and position regulation required in machine tools, packaging equipment, and material handling systems. Standard feedback and I/O connections support integration into distributed automation architectures. This arrangement allows the drive to follow motion commands closely and maintain stable control during indexing moves, speed changes, and repeated positioning cycles.

The drive accepts an input of 110 to 230 V and draws up to 4 kVA at full load to energize its inverter stage. It supplies a continuous motor phase current of 10 A rms and uses a carrier frequency of 8 kHz; a 16 kHz mode is available when lower acoustic noise is preferred. The internal DC bus is regulated below 450 VDC, and an overvoltage trip at 455 VDC helps protect the semiconductors. On a 230 V network, the connected motor must provide at least 1.9 mH of inductance and withstand a voltage rise of 3.3 kV/µs, which helps limit current ripple and insulation stress.

Continuous switching losses reach 90 W, and the residual voltage drop across the power stage is 4 V, so cabinet airflow must remove the resulting heat. An internal 66 Ω resistor absorbs 50 W, while an external 66 Ω resistor can handle 1 kW. Together they allow instantaneous brake energy up to 0.88 kW during deceleration, which supports braking on axes that return energy to the DC bus. The safety circuit includes STO (Safe Torque Off), which removes gate signals without shutting down the logic supply. Additional protective functions include DC-bus brake power limiting, coordination with the 8 kHz carrier derating strategy, and shutdown when the bus reaches 455 VDC to help protect the drive and connected motor.