S77202-NAF2-F2 Kollmorgen
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The Kollmorgen S77202-NAF2-F2 is a servo drive in the S700 Servo Drives series and is designed for three-phase AC input power. This unit offers a rated current of 72 Arms, peak output current of 140 Arms, and supports a continuous brake power of 8 kW. It weighs 13 kilograms, has dual channel STO capability, and features a fan controller expansion card.
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Product Description:
The S77202-NAF2-F2 is a servo drive produced by Kollmorgen within the S700 Servo Drives series. It interfaces between a machine controller and a synchronous servo motor, modulating power flow to regulate torque, speed, and position in industrial automation cells such as packaging lines and robotics. By accepting a three-phase supply and delivering regulated current, the unit supports high-bandwidth motion control while integrating safety through a dual-channel safe torque-off function. This arrangement allows the drive to serve as both the power stage and a central motion-control element within a cabinet-based automation system.
During normal operation, the drive delivers a rated current of 72 Arms and can elevate output to 140 Arms for 5 s when acceleration is demanded. These currents are supplied from a three-phase 208 to 480 V input, and the converter input section is sized for 50 kVA, so upstream power components must be selected accordingly. A brake transistor path dissipates 8 kW through an external resistor, which helps prevent DC-link overvoltage during rapid deceleration. The switching frequency is 8 kHz, producing an output current form factor of 1.01 that helps keep motor heating close to sinusoidal excitation, while the power stage shows only 6 V of residual voltage drop and the integrated STO removes drive power to the motor without opening the contactor.
The housing has a height of 386 mm, with a width of 190 mm and a depth of 244 mm, allowing the unit to fit standard control cabinets while preserving airflow clearance. The drive weighs 13 kg, and its idle thermal dissipation is 24 W, which helps keep enclosure cooling demand moderate; a dedicated fan controller expansion card supervises the internal blower. Acoustic output does not exceed 68 dB(A), supporting installation near operator work areas. Dynamic braking energy is directed to a 10 Ohm external resistor, and the use of standard PCBs suits general-purpose environments that do not require conformal coating.
Frequently Asked Questions about S77202-NAF2-F2:
Q: What type of input power does the S77202-NAF2-F2 servo drive require?
A: The S77202-NAF2-F2 supports three-phase AC as its input power source for efficient industrial integration.
Q: What is the peak output current and duration available on the S77202-NAF2-F2?
A: This model can deliver a peak output current of 140 Arms for up to 5 seconds during demanding load conditions.
Q: How much rated input power does the S77202-NAF2-F2 servo drive require?
A: The rated input power for the S77202-NAF2-F2 is 50 kVA, supporting high-capacity operations.
Q: What is the switching frequency of the S77202-NAF2-F2 servo drive?
A: The S77202-NAF2-F2 features an 8 kHz switching frequency, providing smooth and reliable drive performance.
Q: What type of STO (Safe Torque Off) capability does the S77202-NAF2-F2 provide?
A: It offers dual channel Safe Torque Off (STO) capability for enhanced operational safety and redundancy.
