Product Description:

The S7720F-FBF2-F2 is a digital servo amplifier manufactured by Kollmorgen within the S700 Servo Drives series. It serves as the power stage between a three-phase mains supply and a servomotor, converting line voltage into precisely controlled current for torque, velocity, and position regulation in industrial automation. Typical applications include coordinated axes in packaging machines, pick-and-place robots, and web handling lines where deterministic performance and compact installation are important. Its digital control format supports accurate response to changing command signals during synchronized machine motion.

Cabinet layout is simplified by a height of 386 mm, a width of 190 mm, and a depth of 244 mm measured without connectors. The drive weighs 13 kg, which helps keep panel installation manageable. Electrically, it accepts 50 kVA of apparent power from 208–480 V mains and delivers a continuous motor phase current of 72 Arms, supporting medium-to-large motion axes. A residual voltage drop of 6 V across the output bridge keeps voltage available at the motor terminals, and an integrated fan-controller expansion card modulates airflow while thermal dissipation is limited to 1135 W at 480 V and maximum noise emission remains 68 dB(A). Standard or coated printed circuit boards are available for cleanroom or high-humidity environments.

For transient demands, the inverter can supply up to 140 Arms of peak current, enabling rapid acceleration of high-inertia loads. A carrier switching frequency of 8 kHz lowers harmonic content, reduces audible motor noise, and improves current-loop bandwidth. Functional safety is incorporated through a dual-channel STO circuit that disables torque directly in the power stage without external contactors. Standby heat loss is limited to 24 W, easing cabinet cooling when the axis is inactive, and the rated thermal path supports continuous operation at full load.