Product Description:

The S7720A-FBF2-S3 is a servo drive built by Kollmorgen within the S700 Servo Drives series. It conditions three-phase mains power, sends it to a matched motor, and closes the control loop with encoder feedback to manage torque, speed, and position in automated lines, packaging stations, and handling robots. The unit uses a cold-plate layout for direct mounting on machine frames, and coated circuit boards help protect the electronics in humid or dusty environments. This arrangement also supports compact installation where cabinet airflow is limited.

During motion profiles, the drive can supply a peak phase current of 140 Arms, and it sustains a continuous rating of 72 Arms to cover typical RMS loading. These output levels are available throughout an input range of 208 to 480 V, which supports use on common industrial power systems without an intermediate transformer. Power transistors switch at 8 kHz, setting the pulse pattern applied to the motor and influencing acoustic output. Current waveform quality is reflected by an output form factor of 1.01, indicating near-sinusoidal delivery that helps limit winding temperature rise. A residual 6 V drop across the power stage and a 50 kVA input rating show that the unit can pass substantial energy with moderate semiconductor losses, while the cold plate removes waste heat without relying on internal fans.

Functional safety is handled through the integrated safe-torque-off system, and its architecture uses dual-channel STO for redundant shutdown paths. The secondary circuit removes drive power within 2 ms, which supports rapid response when the safety function is triggered. At standby, the electronics dissipate 24 W, and total mass is limited to 13 kg, which helps with mounting on machine panels or backplates. Depth without connectors is 244 mm, leaving clearance for cable bends, and the maximum sound pressure produced by the switching hardware remains below 68 dB(A). The coated boards and cold-plate thermal path also help the unit suit enclosed industrial installations where airborne contamination or restricted ventilation may be present.