S77202-PBF2-S4 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen S77202-PBF2-S4 is part of the S700 Servo Drives series and is rated for 72 Arms current with an input power of 50 kVA. This servo drive features a PROFIBUS DP fieldbus interface with two 9-pin SubD ports and provides dual channel STO for safety at SIL CL2 / PLd level. It uses a controlled fan for cooling and measures 386 mm in height, 244 mm in depth, and 190 mm in width.
Internal Product Review
The S77202-PBF2-S4 is a Kollmorgen S700 servo drive with a 72 Arms rated current and 50 kVA rated input power. PROFIBUS DP support through dual 9-pin SubD ports simplifies network integration and gives the drive a clean fit in established motion systems. Dual-channel STO with SIL CL2 / PLd safety makes the unit especially attractive for high-performance axes requiring dependable protection.
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Product Description:
The S77202-PBF2-S4 belongs to the S700 Servo Drives series from Kollmorgen. As a digitally controlled servo drive, it links precision feedback with power conversion so that rotary or linear motors can be regulated in automated cells, packaging lines, and material-handling axes. The unit’s integration into motion networks is simplified by its built-in PROFIBUS DP interface, positioning it as a scalable module for multi-axis systems that rely on deterministic fieldbus communication.
The drive delivers a continuous output phase current of 72 Arms while its input stage is rated for 50 kVA from three-phase mains in the 208 to 480 V range. A silicon IGBT bridge switches at 8 kHz, balancing current ripple with thermal stress, and excess heat is exhausted by a controlled fan that is supervised through the supplied fan-controller expansion card. Under nominal 400 V operation the inverter dissipates 1005 W, so cabinet airflow must accommodate that figure. Motor selections must present at least 0.51 mH of inductance at 400 V to limit peak current, and the inverter contributes only 6 V of residual voltage drop, aiding low-speed torque. The output waveform’s 4.0 kV/µs rise rate supports fast current loops yet stays inside typical insulation ratings. Two 9-pin Sub-D PROFIBUS ports allow daisy chaining, and the electronics are built on standard PCBs for ease of service.
The housing measures 386 mm in height, 190 mm in width, and 244 mm in depth, letting it fit shallow control enclosures while maintaining proper clearance for connector sets that extend beyond these dimensions. Functional safety is addressed with a SIL CL2 / PLd assessment and a dual-channel STO circuit that removes motor energy without external contactors. With these mechanical and safety parameters, the drive can be mounted in machinery that must meet category 3 stop requirements without enlarging the panel footprint.
