Product Description:

The S443M-SE is a servo drive manufactured by Kollmorgen within the S400 Servo Drives series. It converts shared DC bus energy in a multi-axis system into controlled motor power for precise motion tasks. Communication takes place over the SERCOS fieldbus, allowing the controller to coordinate speed and position commands with closely timed axis response. This makes the drive suitable for coordinated machinery such as packaging lines, material-handling systems, and printing equipment where several servo axes must move together.

The continuous output capability is 3 A rms, giving the axis enough current for steady-state motion, while short bursts up to 9 A rms support acceleration and disturbance rejection. An output stage clock of 8 kHz refreshes the pulse-width-modulated waveform quickly enough to reduce torque ripple on low-inductance motors. Fast waveform updates also help the drive produce smoother low-speed behavior when the motor is following small position corrections. Quiescent dissipation is 12 W when the unit is enabled but unloaded, and rated-current dissipation rises to 35 W under full continuous output. The housing measures 100 mm in width, 240 mm in depth, and 230 mm in height, with a mass of 3 kg. This compact form helps fit several axes in the same control cabinet without making cable routing overly crowded.

The brake chopper engages at 680 V and releases at 720 V, absorbing regenerative energy through an internal path that can handle 16 kW of pulse power without external resistors. During deceleration or load lowering, recovered energy is diverted away from the supply section so the DC bus does not rise unchecked. The overvoltage cutoff at 750 V protects the DC link if the braking circuit cannot dissipate surplus energy quickly enough. For current control, the maximum supported load inductance is 75 mH and the minimum is 12 mH. These inductance limits help the current loop remain stable and keep peak di/dt stress on the IGBTs under control.