Product Description:

The S7720F-NAF2-NA is a Kollmorgen servo drive that belongs to the S700 Servo Drives series. It is designed to interface directly with rotary or linear servomotors and provide closed-loop control in industrial automation cells, packaging machinery, and high-speed handling equipment. By modulating three-phase power and monitoring feedback devices, the drive regulates torque, velocity, and position according to the motion profile commanded by the host controller. Feedback monitoring also lets the drive correct motor behavior as load conditions change during operation.

The continuous output capability reaches 72 Arms, giving the drive a current ceiling that matches medium-to-large servomotor frames. Rated input power is 50 kVA, which affects conductor sizing and feeder protection. For short bursts of acceleration, the current can rise to 140 A for five seconds without triggering overcurrent shutdown. An upstream AC supply fuse of 80 A is specified to coordinate with the converter’s semiconductor limits. During operation at 480 V, the power stage dissipates 1135 W as heat, which affects panel ventilation and cooling layout. The input section accepts a supply range of 208 to 480 V, so the same hardware can be used on different regional power systems without a transformer.

The enclosure carries an IP20 rating, meaning live parts must be installed in a cabinet while still providing basic finger protection. This arrangement is intended for enclosed control panels rather than open mounting in exposed areas. With connectors fitted, the housing measures 505 mm in height, 190 mm in width, and 285 mm in depth and weighs 13 kg, which supports vertical mounting on DIN rails or backplates. Acoustic output remains below 68 dB(A), which helps limit operating noise. A fan controller expansion card starts forced cooling when the ambient temperature exceeds 65 °C. The drive also uses a 10 Ω external brake resistor, dual-channel STO inputs, and a minimum motor inductance of 0.61 mH.