Product Description:

The S74802-FBF2-PA is a digital servo drive produced by Kollmorgen and supplied within the S700 Servo Drives series. It regulates three-phase synchronous or induction motors in automated machinery by converting the plant’s AC mains into controlled output voltage and frequency. The unit executes velocity, torque, and position loops and exposes safe torque-off channels for integration with safety relays in packaging, material-handling, and general motion platforms. This allows the drive to support precise motion control while also fitting into machine safety circuits.

Physically, the drive occupies a width of 190 mm, a depth of 244 mm, and a height of 386 mm when connectors are excluded, so cabinet layout can be planned precisely. A fan-controller expansion card supervises airflow across the standard PCBs to keep semiconductor temperatures within acceptable limits. The power stage is rated for 48 Arms continuous output at a mains window of 208…480 V, and it can draw up to 36 kVA from the supply during full-load operation. Current is modulated with an IGBT bridge that switches at 8 kHz; when demanded torque falls below half of nominal, the carrier rises to 16 kHz to reduce audible noise. The minimum permissible motor inductance at 208 V is 0.38 mH, which helps prevent overcurrent faults during high d-axis excitation.

For short transients, the drive sources up to 96 Arms for five seconds, allowing rapid acceleration of low-inertia loads. Under a 480 V input, the control electronics and switching losses generate 685 W of heat, which must be removed by the forced-air path governed by the accessory fan controller. Acoustic emissions remain below 62 dB(A), so the device can be mounted near production stations without additional sound shielding. Dual-channel STO supports SIL-rated stop functions. A total mass of 13 kg keeps the unit manageable during installation, and cabinet spacing should account for the forced-air cooling path.