Product Description:

The S7720F-PNF2-NA servo drive is produced by Kollmorgen and belongs to the S700 Servo Drives series. As a field-mounted drive controller it supplies regulated three-phase power to synchronous motors, enabling precise velocity and torque loops in automated machinery such as packaging lines, pick-and-place axes, and winding stations. Dual-channel Safe Torque Off circuitry is installed to meet machine safety standards without extra relays, and the drive’s internal brake chopper permits controlled deceleration when line power is removed.

The power section supports a continuous phase current of 72 Arms, providing the steady output demanded by mid-frame servomotors on feeders or gantries. For short bursts the drive can source up to 140 A, enabling high-inertia loads to accelerate without losing position. Mains input capability is rated at 50 kVA, and the converter will operate on any three-phase supply from 208 to 480 V. A protection rating of IP20 means the housing blocks fingers and debris but requires placement inside a sealed panel. EtherCAT and CANopen ports are available for deterministic motion commands, while a Profinet interface can be added through the option slot. Standard and conformally coated PCB variants let users match chemical exposure levels without altering performance.

The integrated brake chopper can absorb regenerated energy continuously at 8 kW, with a 10 Ω external resistor specified to dissipate the heat. Upstream protection should employ fuses no larger than 80 A to clear faults without nuisance trips. When the fan-controller expansion card is installed, forced airflow maintains safe temperatures even while Profinet exchanges data at 100 Mbit/s. The drive stands 386 mm high, is 190 mm wide, and extends 244 mm deep excluding connectors, yet it weighs only 13 kg, simplifying cabinet layout and service handling.