Product Description:

The S72401-NA servo drive is manufactured by Kollmorgen as a member of the S700 Servo Drives series. It regulates torque, speed, and position of synchronous or induction motors within automated machinery and motion cells. By converting three-phase mains power into a controlled output, the unit links fieldbus communication with the controller and provides integrated safety for axis control in industrial automation. Its control architecture supports coordinated motion in equipment that must maintain stable response during acceleration, dwell, and repeated position changes.

Electrically, the drive accepts three-phase line supplies from 208 to 480 V and can draw up to 18 kVA of input power at a rated current output of 24 Arms. An IGBT bridge modulates this energy at 8 kHz, supporting precise current loops while keeping conducted emissions low. A safety circuit identified as single-channel STO disconnects motor power when required. Internal braking capability is 200 W and is matched to a 23 Ω resistor, while up to 4 kW of external brake energy can be routed to a separate resistor when higher regeneration is present. EtherCAT and CANopen interfaces are included on the base hardware, so no expansion card is needed, and the electronics use standard PCBs.

Thermal management relies on 330 W of rated heat dissipation during continuous duty, dropping to 25 W when the axis is disabled, so enclosure airflow must be planned accordingly within the 0 to +40 °C operating range. The drive has a footprint of 100 mm in width, 382 mm in height, and 285 mm in depth with connectors installed, allowing dense stacking inside a control cabinet. Overall mass is 5.5 kg, which supports cabinet mounting while still providing heat sinking for the power stage. Cabinet layouts can remain compact because the housing combines the power stage and control electronics in a narrow vertical format.