Product Description:

The S7720A-EIF2-F2 is a servo drive produced by Kollmorgen as part of the S700 Servo Drives series. It converts three-phase mains power into regulated AC output that commands matched servo motors in automated assembly, packaging, and material-handling systems. By combining power electronics with motion control functions, the unit establishes closed-loop control and enables precise torque, speed, and position regulation throughout the machine cycle.

The drive operates on a wide line range of 208 to 480 V, and its input section can process up to 50 kVA of apparent power under rated conditions. Continuous motor current is limited to 72 Arms, providing the thermal baseline for long-duration duty. For rapid acceleration or shock loads, the output stage can deliver 140 Arms for a maximum of 5 s before returning to the nominal setting. Pulse-width modulation switches at 8 kHz, which helps minimize ripple and audible noise while maintaining dynamic response. The logic domain draws 2 A from an auxiliary 24 VDC supply, and internal losses across the power semiconductors account for a residual voltage drop of 6 V. A dual-channel STO circuit is embedded so the drive can remove torque-producing energy without external contactors when a safety request is issued.

The drive’s control interface exposes 14 digital inputs and 8 digital outputs. The inputs sense machine signals at 24 V / 7 mA, while the outputs can source up to 24 V / 500 mA for valve coils or relays. An onboard expansion slot is populated with a fan controller card, and that auxiliary fan engages at 65 °C to maintain internal component temperature. Mechanical integration is simplified by the cold-plate base with coated PCBs and by a footprint that measures 190 mm wide, 244 mm deep, and 386 mm high when connectors are excluded.