Product Description:

The S7720F-NANA-NA is a servo drive manufactured by Kollmorgen as part of the S700 Servo Drives series. It converts three-phase utility power into tightly regulated motor current for positioning and speed-control tasks in automated cells, packaging lines, and robotics. By integrating power electronics and fieldbus communication, the unit supplies precise torque commands while exchanging real-time status data with a motion controller. This arrangement supports coordinated motion on servo axes that require repeatable acceleration, holding torque, and stable speed regulation during cycle changes.

During continuous operation, the drive provides a rated current of 72 A RMS from a supply that can vary from 208 to 480 V. For short acceleration peaks, it can deliver up to 140 A RMS. The output stage switches at 8 kHz, reducing motor ripple and audible whine. Apparent input power reaches 50 kVA, and at that load internal losses rise to 1135 W, so enclosure ventilation must be sized accordingly. A residual link drop of 6 V limits energy lost in protective devices. EtherCAT and CANopen ports are implemented on the base hardware, so the drive can connect directly to common motion networks without an expansion card.

When the machine is idle, the control electronics dissipate only 24 W, which helps keep cabinet temperature rise low. Maximum sound emission is 68 dB(A), fitting typical factory noise guidelines. The drive weighs 13 kg and measures 386 mm in height, 190 mm in width, and 244 mm in depth, allowing placement in standard 400 mm deep panels. Functional safety is provided by a dual-channel STO system; channel one disengages power within 1 ms and channel two within 2 ms. The boards can be supplied with a conformal coating for areas with higher ambient humidity. That coating helps protect the electronics from moisture and airborne contamination inside the cabinet.