Product Description:

The S74802-SNF2-PA is a digital servo amplifier manufactured by Kollmorgen and assigned to the S700 Servo Drives series. Designed for panel mounting, it converts three-phase mains energy into controlled motor currents so closed-loop motion axes can achieve precise position, velocity, and torque in automated packaging, material-handling, and process equipment. Within a typical cell, the unit interfaces with a motion controller over deterministic networks and feeds a synchronous or induction motor without requiring external line contactors.

Electrically, the drive accepts three-phase supplies from 208 to 480 V and may draw up to 35 kVA under worst-case mechanical demand. It provides a continuous phase output of 48 Arms, while short-term events such as acceleration allow a peak of 96 Arms. The H-bridge switches at 8 kHz, producing finely stepped pulses that are filtered by the motor inductance. Cable and insulation selection must account for the 4.0 kV/µs voltage slew rate and a residual 6 V drop across the IGBTs. Two RJ-45 SynqNet ports support real-time command and feedback exchange, standard PCBs populate the control section, and a dedicated slot accepts a fan-controller expansion card for auxiliary blower management.

At a 400 V DC link, the inverter dissipates 635 W, while loss drops to 24 W when the output stage is inhibited. The internal fan starts at 65 °C and circulates air through the IP20 housing, which measures 190 mm in width, 386 mm in height, and 244 mm in depth; total mass is 13 kg, so vibration forces remain moderate. Functional safety is delivered by dual-channel STO, which removes gate signals to the bridge without interrupting mains. For diagnostic probing, the analog monitor channel resolves 0.38 mV, enabling accurate observation of torque-producing variables during operation.