Product Description:

The S7720F-SNF2-S3 is a servo drive manufactured by Kollmorgen and assigned to the S700 Servo Drives series. Within an automation cell, the unit converts three-phase mains power into precisely regulated voltage and current for brushless servomotors, allowing rapid positioning, velocity control, and torque regulation on packaging lines, machine tools, or pick-and-place modules. Its control architecture is suited to motion systems that need stable response during changing loads, repeated starts, and tightly coordinated axis movement.

The drive delivers a continuous phase current of 72 Arms and can surge to 140 Arms during brief load spikes. That peak output can be maintained for up to 5 s, which helps the motor overcome inertial starts or sudden friction changes without an immediate drop in performance. Power devices inside the inverter switch at 8 kHz, balancing motor smoothness with manageable switching losses. A universal mains input range of 208 to 480 V lets the same hardware operate on 50 or 60 Hz utility power without a step-down transformer. SynqNet uses the Slot 1 interface, allowing deterministic motion commands to reach the current loops with very low latency.

Thermal output reaches 1135 W (480 VAC) under maximum load, so the cabinet must provide adequate airflow or use a fan control expansion card. For regenerative braking, an external brake stage can absorb up to 8 kW through a 10-ohm resistor, helping protect the DC bus during fast deceleration. Functional safety is built in through a dual-channel STO circuit; when both channels open, the power stage is reliably de-energized without extra contactors. Acoustic output is limited to 68 dB(A), which helps keep operating noise under control on the production floor. For layout planning, the enclosure is 386 mm high, 190 mm wide, and 244 mm deep, and it weighs 13 kg. Standard and coated PCB options allow the platform to be used in either clean indoor spaces or more humid and dusty environments.