Product Description:

The S7720A-2CF2-NA servo drive is manufactured by Kollmorgen within the S700 Servo Drives series. It converts incoming three-phase mains power into controlled output for synchronous and induction servomotors, allowing precise velocity and torque control in material handling, robotics, and machine-tool applications. The unit is intended for installation in a control cabinet, where its cold-plate base can be coupled to a panel for heat extraction. Its printed circuit boards have a protective coating that helps resist moisture and airborne contaminants inside industrial enclosures.

Continuous motion duty is supported by a rated phase current of 72 Arms, while transient acceleration demands can be met with a peak capability of 140 Arms. These current limits are available across a mains window of 208 to 480 V and at standard utility frequencies of 50 or 60 Hz, so the same unit can operate in mixed-voltage facilities. The insulated-gate output bridge switches at 8 kHz, creating a high-resolution sinusoidal waveform that helps reduce motor acoustic noise and torque ripple. Control commands arrive over EtherCAT and CANopen networks on the front panel, while a residual DC bus drop of 6 V helps protect the logic during short line dips. A plug-in fan controller card supervises cabinet airflow, and the drive may be power-cycled up to 30 times per hour without derating.

An auxiliary supply of 24 VDC keeps the control electronics active for diagnostics and communication when the mains is isolated. The power stage can deliver up to 50 kVA of apparent power to connected servomotors, while emitted sound pressure is held to 68 dB(A). Operator safety is supported by a dual-channel STO system that disables the switching elements without relying on external contactors. This arrangement allows the drive to remain integrated with the control system while the torque-producing output is safely shut off.