Product Description:

The S77202-PBF2-S3 belongs to the S700 Servo Drives series produced by Kollmorgen. As a servo drive, it regulates torque, speed, and position for synchronous or induction motors in automated cells, packaging lines, and material-handling stations. The unit interfaces with fieldbus networks and braking hardware so the connected axis can accelerate, hold, and stop in coordination with PLC motion commands.

This model is rated for a three-phase supply of 208 to 480 V and can accept up to 50 kVA of input power while supplying a continuous phase current of 72 Arms. For short overloads, it delivers 140 Arms during 5-second intervals to support high-inertia starts. The integrated PROFIBUS-DP card supports data exchange at 12 MBaud through two 9-pin Sub-D connectors, using PPO type 2 telegrams for cyclic setpoint and status transmission. A Safe Torque Off circuit provides dual-channel STO, so the motor power stage can be disabled without removing mains voltage. Motion smoothness is supported by a minimum permissible motor inductance of 0.51 mH at 400 V, while a residual voltage drop of 6 V helps maintain bus utilization. The 10 Ω external brake resistor and an 8 kW brake power rating dissipate regenerative energy, and a fan controller card modulates cooling airflow.

When panel temperatures rise, the heatsink dissipates 1005 W of loss power, with the axial fan stepping to 50% of its rated speed once internal thresholds are met. Braking capacity is continuous at 8 kW, so vertical axes can be lowered repeatedly without overrunning the resistor. Functional safety is supervised by an S1-2 card that reacts within 4 ms and is powered from an independent 24 VDC feed. Standard PCBs occupy the remaining option slots, and the primary fieldbus position in Slot 1 is reserved for PROFIBUS-DP communication, leaving expansion options for future I/O or feedback upgrades.