Product Description:

The S74802-SNF2-S3 is a servo drive manufactured by Kollmorgen as part of the S700 Servo Drives series. This module sits between the plant supply and the motor, modulating current so a motion controller can execute precise position, speed, and torque profiles. By integrating field-oriented control with networked safety functions, the drive simplifies axis design in packaging machines, robotics, and material-handling equipment where fast dynamic response is required. Because it tolerates high-voltage mains and deterministic bus links, it supports medium- to high-power motion tasks.

Electrically, the drive accepts a supply range of 208 to 480 V, drawing up to 35 kVA at full load. Its continuous phase current of 48 Arms supports production duty, while a momentary peak of 96 Arms accommodates acceleration or shock loads without saturation. Current is switched at 8 kHz by the IGBT bridge, producing a sinusoidal output form factor of 1.01 that limits motor heating. Kollmorgen specifies a minimum motor inductance of 0.88 mH at 480 V, so machines should use windings at or above this threshold to control ripple. A residual voltage drop of 6 V across the bridge helps calculate internal losses. Two RJ-45 SynqNet ports provide deterministic motion-bus connectivity, standard PCBs are installed, and a fan control expansion card can be added for cabinet thermal management.

Thermal behavior is listed as 24 W of dissipation when disabled and 685 W during nominal operation at 480 V; these figures aid enclosure airflow calculations. The switching network produces a dv/dt of 4.8 kV/µs at 480 V, so shielded cabling and proper grounding are recommended. Integrated safety is provided by a dual-channel STO interface that removes torque in milliseconds without external contactors. Overall acoustic output is limited to 62 dB(A), and the aluminum housing weighs 13 kg.