Product Description:

The S77202-FBF2-F2 is a servo drive produced by Kollmorgen within the S700 Servo Drives series. It supplies regulated three-phase power to synchronous or induction motors and provides drive control functions needed in automated machinery and material-handling cells. By converting the incoming AC line into pulse-width-modulated output, the unit acts as the interface between the plant's power system and the motion axis commanded by the automation controller.

Electrically, the drive is rated for a continuous output of 72 Arms while drawing up to 50 kVA from a three-phase mains supply in the 208–480 V range. The IGBT output bridge is clocked at 8 kHz, which improves current-loop resolution and minimizes torque ripple. Short overloads are permissible for 5 s, allowing acceleration of high-inertia loads. A dual-channel STO circuit disconnects the gate signals for safety, and the residual DC-bus drop is limited to 6 V to shorten restart times. An optional expansion card can control the heat sink blower when the internal sensor reaches 80 °C. Feedback electronics receive 5 V DC at 300 mA, matching typical encoder requirements. Standard PCBs are fitted throughout the control stack.

Mechanical dimensions are 386 mm in height, 190 mm in width, and 244 mm in depth, while the enclosure weighs 13 kg. At full line voltage, the switching edges yield a dv/dt of 4.8 kV/µs, so cable shielding and motor insulation class must accommodate this gradient. To prevent excessive ripple current, Kollmorgen specifies a minimum motor inductance of 0.61 mH when the drive is fed from a 480 V bus. Acoustic output does not exceed 68 dB(A), keeping the panel within common plant noise limits. These figures assume the onboard fan is controlled by the optional controller.