Product Description:

The S74802-2CF2-NA is a servo drive produced by Kollmorgen as part of the S700 Servo Drives series. In an automation cell, it receives three-phase mains power, converts it into regulated voltage and current, and commands servomotors through position or velocity loops. This closed-loop regulation allows machine tools, pick-and-place robots, and packaging equipment to maintain repeatable movement profiles under varying mechanical loads. It also helps the connected motor respond consistently during acceleration, deceleration, and steady-speed operation.

Electrically, the unit accepts a three-phase input span of 208–480 V and can draw up to 35 kVA. Its inverter section supplies a continuous motor current of 48 Arms, suited for medium-frame servomotors. The power devices switch at 8 kHz, providing smooth current waveforms while keeping switching loss within the limits of the integrated heat sink. A residual voltage drop of 6 V appears across the output stage, which should be considered when low-speed torque margins are sized. Low-voltage control circuitry is powered by a 24 V DC rail that demands 2 A. Functional safety is delivered through a dual-channel STO interface that disables torque without opening the mains contactor. Communication occurs on twin CAN buses provided by the Slot 1 2CAN module, and an internal 120 Ω terminator can be selected for end-node installation.

Cabinet layout is simplified by compact proportions: the housing measures 190 mm wide, 244 mm deep, and 386 mm high, and its assembled mass is only 13 kg. When the fan is turned off, the drive releases 24 W of heat, and an expansion card for fan control can be installed for continuous high-duty cycles. Maximum acoustic output is 62 dB(A), keeping panel noise below typical factory levels. The design uses standard PCBs for the control layers, and the combination of dual safety channels and two-bus communication supports flexible integration in enclosed control cabinets.