Product Description:

The S7720F-NANA-S3 is a servo drive unit manufactured by Kollmorgen and classified within the S700 Servo Drives series. As a digitally controlled power stage, it supplies regulated three-phase energy to synchronous or induction motors, allowing precise velocity and torque control in packaging lines, metal-forming cells, and other automated equipment. By integrating fieldbus interfaces and safety functions in a compact IP20 housing, the module simplifies cabinet layouts and reduces the response time between the motion controller and the driven axis. This arrangement supports coordinated motion where fast command updates and repeatable motor response are needed across indexing, feeding, and positioning tasks.

Electrically, the drive accepts line supplies from 208–480 V, so it can be used on standard industrial mains in many regions. Under continuous load, it delivers 72 Arms without derating, and for transient acceleration or shock loads it can supply 140 Arms for up to 5 s. The internal IGBT bridge commutates at 8 kHz, a switching frequency that balances current ripple and thermal stress on the semiconductors. Nominal demand on the feeder is 50 kVA, and the residual DC-link voltage drops to 6 V after power off to limit stored energy.

At full rating, the heat sink must disperse 1135 W at 480 V, while standby losses remain at 24 W when the motor is idle. Functional safety is implemented with dual-channel STO, allowing suitable emergency-stop circuits without external relays. The drive weighs 13 kg and produces a maximum of 68 dB(A) during fan-assisted cooling, which affects panel layout and acoustic control. Physical dimensions of 190 mm in width, 244 mm in depth, and 386 mm in height leave room for lateral airflow. EtherCAT and CANopen ports are already installed, so no expansion card is required, and conformal-coated PCBs are available for environments with conductive dust.