S7720C-FBF2-F2 Kollmorgen
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The Kollmorgen S7720C-FBF2-F2 is part of the S700 Servo Drives series and weighs 13 kilograms. This servo drive has a rated current of 72 Arms and a voltage rating of 208 to 480 volts. It features dual channel STO capability and a continuous brake power of 8 kW.
Internal Product Review
The S7720C-FBF2-F2 is a Kollmorgen S700 servo drive with a 208...480V voltage rating and 72 Arms rated current. Dual-channel STO capability and an 8 kHz output stage support stable motion control and dependable machine safety. Coldplate construction helps thermal management, and 140 Arms peak output current gives the drive strong short-term overload performance.
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Product Description:
The S7720C-FBF2-F2 servo drive is manufactured by Kollmorgen within the S700 Servo Drives series. Designed for industrial automation, the unit converts three-phase mains power into a precisely modulated output that governs motor torque, velocity, and position. It serves as a high-performance amplifier for packaging, printing, and robotic axes that require integrated safety and energy management functions. This operating role suits applications that need repeatable motion control during frequent acceleration, deceleration, and load changes.
With a line voltage range of 208 to 480 V, the drive draws up to 50 kVA and delivers a rated output of 72 Arms, while short bursts reach 140 Arms for five seconds during acceleration. The output waveform has a current form factor of 1.01 and is carrier-modulated at 8 kHz, balancing harmonic quality with switching losses. Continuous mechanical deceleration energy is absorbed as 8 kW of brake power, while higher peaks are diverted to a 10 ohm external resistor. Connected motors must present at least 0.51 mH of inductance at 400 V to limit current ripple. A cold-plate base conducts heat to the panel, the fan-controller expansion card regulates auxiliary airflow, and dual-channel STO provides safe torque off without relays. The internal bridge leaves a 6 V residual drop across the DC link, and voltage rise on switching edges is limited to 4.0 kV/µs.
During motion cycles, the switch-on and switch-off frequency is limited to 30 operations per hour, a thermal limit that allows the chassis to dissipate 1005 W at 400 V and only 24 W when the power stage is disabled. For rapid decelerations, the pulse brake channel withstands up to 50 kW without exceeding component limits. Acoustic output remains below 68 dB(A) at one meter, supporting use in factory areas with strict noise targets. The drive weighs 13 kg, which helps determine panel support and mounting requirements.
