Product Description:

The S74802-SNF2-S4 servo drive is produced by Kollmorgen and belongs to the S700 Servo Drives series. It occupies the power-conversion layer of an automation system, taking commands from a motion controller and regulating motor voltage and current so that axes accelerate, decelerate, or hold position as required on packaging lines, handling robots, and comparable equipment. This role supports coordinated motion where stable current control and fast response are needed during positioning, transfer, and repeated start-stop movement. Real-time communication is handled through a SynqNet interface in slot 1, allowing the drive to exchange motion data with the control system.

The drive accepts a three-phase supply of 208–480 V and delivers a continuous output current of 48 Arms, while short-term acceleration peaks can reach 96 Arms. Its apparent power demand is 35 kVA, which indicates the feeder capacity needed for the control cabinet and upstream protection devices. A current form factor of 1.01 indicates that the output waveforms remain close to sinusoidal, which helps limit additional rotor heating and supports smooth motor operation. When the power stage is disabled, thermal dissipation falls to 24 W, reducing standby heat load inside the enclosure. The internal electronics use standard PCB construction for predictable thermal paths, and the expansion card is a fan controller that adjusts airflow in response to heat-sink temperature.

Across the output stage, the residual voltage drop is 6 V, ensuring that most of the supply potential is transferred to the motor terminals. Functional safety is addressed by a dual channel STO circuit that removes torque-producing power without cutting mains, which allows the drive to stop torque generation through a dedicated safety function. The unit tolerates up to 30 power cycles per hour, which is useful in applications with frequent machine starts and stops. Acoustic output is limited to 62 dB(A), supporting installation in operator areas where lower noise is preferred. Its dimensions are 386 mm in height, 190 mm in width, and 244 mm in depth without connectors, and the overall mass is 13 kg.