Product Description:

The S77202-2CF2-NA is a servo drive manufactured by Kollmorgen and listed within the S700 Servo Drives series. Designed for tightly synchronized motion loops, the unit modulates power from a three-phase supply to rotary or linear servo motors used in automated cells, packaging equipment, and robotics. By processing digital commands and feedback over fieldbus networks, it regulates torque, velocity, and position while supporting safety functions through hardware circuits. This makes the drive suitable for axes that require synchronized starts, controlled speed changes, and repeatable positioning under changing load conditions. Its architecture provides the dynamic current needed for rapid acceleration and precise stopping profiles in industrial automation.

During operation, the drive accepts a three-phase input from 208 to 480 V and draws up to 50 kVA at full load. From that supply, it delivers a continuous output of 72 Arms and can supply bursts of 140 Arms during acceleration peaks. This supports short, high-demand motion events without requiring continuous peak current operation. The IGBT bridge switches at 8 kHz, which helps minimize current ripple, and the resulting output current form factor is 1.01. Internal copper losses are limited by a residual voltage drop of 6 V, and the unit may be energized or de-energized up to 30 times per hour. Dual-channel STO circuitry removes motor torque by hardware command, and the installed fan controller expansion board regulates blower speed to keep semiconductor temperatures within limits.

The housing measures 386 mm in height, 190 mm in width, and 244 mm in depth, allowing panel installation with standard clearance. When motion is disabled, the static power electronics still dissipate 24 W of heat. The braking circuit can route regenerative energy to an external 10 Ω resistor, where up to 8 kW is converted into thermal load during rapid stops. Adequate panel space is also needed for airflow and for the external braking hardware used during frequent deceleration duty. A 120 Ω CAN termination maintains signal integrity on the network, and the unit uses standard PCBs in this configuration.