Product Description:

The S7480A-PNF2-NA is a digital servo drive produced by Kollmorgen within the S700 Servo Drives series. Designed to interface between a three-phase power supply and a synchronous or asynchronous servo motor, the unit regulates torque, velocity, and position loops for automated machinery and material-handling cells. It converts input line power to a high-frequency, pulse-width-modulated output, allowing precise motion control while supporting feedback-based safety functions used in modern industrial automation. This arrangement lets the drive manage motor response during acceleration, steady-speed operation, and positioning tasks in compact automation systems.

The drive accepts a line range of 208 to 480 V and is rated for a continuous input of 35 kVA. Under these conditions, it delivers a nominal phase current of 48 Arms to the motor through an H-bridge that switches at 8 kHz. The housing has an IP20 enclosure rating, so it is intended for installation inside a control cabinet rather than for exposed mounting. It also imposes a voltage edge of 4.8 kV/µs at the top of the line range, and the DC-bus residual drop is limited to 6 V to reduce conduction losses. Kollmorgen also specifies a minimum motor inductance of 0.88 mH at the upper end of that range to keep ripple current within drive tolerance.

Thermal management relies on an integral cold plate, and the option package combines this heat sink with coated PCBs for contamination resistance. At full load, the drive releases 685 W of heat, while only 24 W are dissipated when the output is disabled. The cold plate must stay below 75 °C, and its surface flatness is 25 µm per 100 mm for reliable contact. A fan-controller expansion card can regulate cabinet airflow, and the current can peak at 96 Arms for brief duty before it returns to nominal. Safe Torque Off is provided by dual-channel STO, and the enclosure weighs 10.4 kg with overall dimensions of 386 mm high, 190 mm wide, and 244 mm deep.