S77202-DNF2-PA Kollmorgen
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The Kollmorgen S77202-DNF2-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. This drive offers a rated current of 72 Arms and features dual channel STO capability, with a noise emission of 68 dB(A) and an enclosure rated at IP20. It has a weight of 13 kg and uses a fan controller cooling option.
Internal Product Review
The S77202-DNF2-PA is a Kollmorgen S700 servo drive with a 72 Arms rated current and a 208...480V voltage rating. DeviceNet in slot 1 and dual-channel STO support make integration and machine safety especially strong for demanding motion systems. An 8 kHz output stage frequency supports smooth drive response, making this unit a very capable choice for high-performance servo control.
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Product Description:
The S77202-DNF2-PA is a servo drive manufactured by Kollmorgen within the S700 Servo Drives series. Designed for cabinet installation, the unit interfaces with three-phase mains and delivers regulated output to permanent-magnet servomotors used in packaging equipment, robotics, and material-handling axes. By integrating power conversion, motion execution, and Safe Torque Off, the device forms the link between the higher-level motion controller and the motor. It regulates torque, speed, and position commands so the connected axis can follow programmed motion under changing load conditions. This arrangement supports both rapid indexing moves and steady-speed operation from the same power stage.
The rated motor current is 72 Arms, and the line supply can deliver up to 50 kVA at 208 to 480 V. The drive switches its IGBT output stage at 8 kHz, balancing switching loss with current-loop bandwidth. An IP20 housing supports mounting inside a closed electrical cabinet, and airflow across the integrated fan system removes switching heat. The enclosure measures 244 mm deep, 386 mm high, and 190 mm wide, which helps conserve panel space in multi-axis installations. Slot 1 holds a DeviceNet communication board, and the dual-channel STO function disables the output stage when the safety circuit is triggered.
Control integration is aided by an analog input resistance of 20 kΩ, which helps prevent loading of external command sources, and an analog monitor output that spans ±10 V for real-time feedback of speed or torque. During standby, the electronics dissipate only 24 W, and acoustic emissions stay within 68 dB(A) because the cooling fan is adaptively controlled. The monitor output can be used by external control hardware to observe operating behavior without interrupting motor control. The residual DC link voltage drops to 6 V before service access, the total mass is 13 kg, and standard PCBs are used to support long-term parts availability.
