S7720A-PBF2-F2 Kollmorgen
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The Kollmorgen S7720A-PBF2-F2 is a servo drive in the S700 Servo Drives series, weighing 13 kilograms and featuring an enclosure with an IP20 rating. It provides a rated current of 72 Arms, a peak output current of 140 Arms, and supports a voltage rating from 208 to 480 volts. This model has two Profibus ports, a fan controller expansion card, and dual channel STO capability.
Internal Product Review
The S7720A-PBF2-F2 is a Kollmorgen S700 servo drive with a 208...480V voltage rating. PROFIBUS fieldbus support and dual-channel STO make integration and safety handling especially strong in automated equipment. A 72 Arms rated current backed by 140 Arms peak output current highlights excellent power capability.
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Product Description:
The S7720A-PBF2-F2 servo drive is produced by Kollmorgen and is part of the S700 Servo Drives series. It interfaces between an AC mains supply and a synchronous or induction motor, regulating torque, speed, and position in automated machinery. Integrated dual PROFIBUS communication ports and a cold-plate baseplate let the unit fit into distributed motion architectures while transferring heat directly to a panel or liquid circuit. Dual-channel Safe Torque Off inputs provide hardware-level disengagement of motor power during safety events.
Its continuous output capability uses a rated current of 72 Arms, while a momentary overload margin supports 140 Arms to accelerate high-inertia loads. The input section accepts three-phase supplies from 208…480 V, so one drive model can serve multiple plant voltages. A maximum apparent power of 50 kVA shows the line capacity the cabinet must provide. A current form factor of 1.01 keeps the pulse-width-modulated output close to sinusoidal, minimizing additional motor heating. The switching stage attains a dv/dt of 4.0 kV/µs, which shortens current rise time and improves servo stiffness. Motors connected to the drive must present at least 0.51 mH of phase inductance to limit ripple current.
Thermal performance is managed by a cold plate and fan-controlled heat sink that dissipates 1005 W under full load, keeping internal components within their intended operating range. Acoustic testing records 68 dB(A) at the highest cycle rate of 30 operations per hour, a level suitable for standard shop-floor enclosures. The installation weight is 13 kg, which keeps handling requirements moderate during mounting. Dual PROFIBUS connectors in Slot 1 streamline daisy-chain wiring, and the 6 V internal voltage drop figure helps with power cable selection for low-loss distribution.
