S77202-PBF2-PA Kollmorgen
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The S77202-PBF2-PA is a servo drive from Kollmorgen's S700 Servo Drives series. It is a single-axis model with a rated input power of 50 kVA and a voltage rating of 208 to 480 Volts. The drive provides a peak output current of 140 ARMS and weighs 13 kilograms.
Internal Product Review
The S77202-PBF2-PA is a Kollmorgen S700 servo drive designed for single-axis control with a three-phase AC input. A 72 Arms rating and 140 ARMS/Ø peak output current give the drive strong acceleration capability and stable torque delivery. Dual channel STO and a PROFIBUS option make the platform especially appealing for safety-focused, networked servo systems.
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Product Description:
The S77202-PBF2-PA is a single-axis servo drive built by Kollmorgen within the S700 Servo Drives series. It conditions three-phase AC power for precise current regulation and speed control of matched servo motors in automated machinery. By combining drive electronics, safety functions, and communication slots in one enclosure, the unit simplifies panel layout and supports coordinated motion tasks such as packaging, printing, and material handling. It is intended for servo systems that require stable motion control, compact cabinet installation, and integrated safety support. The single-axis format suits machine cabinets where each controlled motor is assigned to a dedicated drive channel.
This drive accepts line input from 208 to 480 V and uses an output stage that switches at 8 kHz, which helps reduce motor torque ripple and acoustic noise. It supports continuous operation at 72 Arms, while acceleration events can draw up to 140 ARMS per phase for 5 s to provide short bursts of extra torque without thermal shutdown. The housing is 244 mm deep without the front connector, 190 mm wide, and 386 mm high, so it fits standard control cabinets. A fan-controller expansion card manages internal airflow, and the design uses standard PCBs to maintain consistent thermal paths. Input power must be a balanced three-phase source at 50/60 Hz, and the single-axis architecture means each drive governs one motor, which simplifies fault isolation.
The power section is rated at 50 kVA, matching medium-inertia motors used on conveyors and gantries. Despite that rating, the drive weighs only 13 kg, which reduces load on panel mounting rails. Functional safety is integrated through a dual-channel STO circuit that removes torque-producing energy when both channels are de-energized. Slot 1 is equipped with PROFIBUS for fieldbus control, while slot 3 carries a PosI/O-Monitor module for position-related inputs. That arrangement supports network communication and local monitoring without requiring separate external interface hardware.
