S77202-SEF2-PA Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen S77202-SEF2-PA is a servo drive from the S700 Servo Drives series with a rated input power of 50 kVA and a voltage rating of 208 to 480 Volts. It has a peak output current of 140 Arms and a continuous brake power of 8 kW. Weighing 13 kilograms, the unit includes dual channel STO capability, a fan controller expansion card, and SERCOS II interface.
Internal Product Review
The S77202-SEF2-PA is a Kollmorgen S700 servo drive designed for demanding motion control, with a 208...480V voltage rating and 72 Arms rated current. SERCOS II in Slot 1 and dual-channel STO support efficient network integration and strong functional safety in automated equipment. Peak output current of 140 Arms gives the servo drive excellent transient performance, making the unit a very capable choice for high-dynamic applications.
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Product Description:
The S77202-SEF2-PA is a Kollmorgen servo amplifier from the S700 Servo Drives series. Designed to regulate three-phase servomotors in automated machinery, the unit conditions incoming line power, receives motor feedback, and executes current loops for precise and repeatable torque, speed, and position control. In a multi-axis cabinet, it operates between a higher-level controller and the motor so commanded motion can be converted into regulated electrical output. That role makes the amplifier suitable for packaging lines, assembly stations, and material-handling cells where coordinated axis control is required.
The drive accepts a mains range of 208 to 480 V and uses IGBTs that switch at 8 kHz, a frequency that balances dynamic response with thermal loading. At nominal duty, it supplies 72 Arms, while short-duration demands can reach a peak of 140 Arms. The required apparent power is 50 kVA, so the upstream distribution hardware must be sized for that electrical load. Analog monitoring is available on a ±10 V channel, and digital motion commands arrive through the Slot 1 SERCOS II interface. Standard PCBs are used in the option package, and a dedicated fan-controller expansion card manages the heat sink blower independently of the main CPU.
Dynamic braking is handled externally, and the unit can dissipate 8 kW of mechanical energy when it is connected to a 10 ohm resistor that matches the listed duty. Dual-channel STO inputs support functional safety shutdown without adding contactors in the motor circuit, which helps keep the motor wiring path simple. The fan starts when the heat sink reaches 80 °C, and overall acoustic output remains 68 dB(A) during operation. The housing measures 190 mm in width, 285 mm in depth, and 505 mm in height, and the unit has a mass of 13 kg. This size fits confined control enclosures while still leaving room for airflow and cable routing.
