Product Description:

The S7720C-SNF2-S3 is a Kollmorgen drive module in the S700 Servo Drives series. It regulates torque, speed, and position of AC servomotors used in packaging machinery, robotics, and material-handling axes. By converting three-phase mains power into controlled output currents, the unit acts as the link between a motion controller and the motor, providing precise actuation for automated production lines. This arrangement lets a higher-level controller send motion commands while the drive manages the motor response needed for consistent axis movement.

Electrically, the drive accepts three-phase mains between 208–480 V, feeding an internal converter rated for 50 kVA of apparent power. Under continuous load, the current delivered to the motor is 72 Arms, while dynamic events can be handled with a peak of 140 Arms. The drive has an IP20 enclosure rating, so it is intended for installation inside a control cabinet rather than exposed on the machine frame. Power enters through 25 mm² AC terminals, and the motor is wired with a matching 25 mm² shielded cable. A separate 35 mm² connection is reserved for the brake resistor to absorb regenerated energy, while the auxiliary 24 VDC supply keeps the control electronics active during mains removal. Two analog setpoint inputs connect the amplifier to the host control system for external command signals.

The drive carries a 200 kA short-circuit rating and must be protected by a supply fuse not exceeding 80 A. A dual-channel STO circuit is integrated to fulfill functional safety stop requirements without external contactors. Up to 30 on/off cycles per hour are permitted, which suits applications that require frequent start-stop sequences. Four digital inputs accept limit, homing, or enable signals for machine control. An optional coldplate base can couple waste heat to a machine coolant manifold, and in that configuration a dedicated expansion card operates the internal fan controller to stabilize component temperatures.