S7720A-PBF2-S3 Kollmorgen
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The Kollmorgen S7720A-PBF2-S3 is part of the S700 Servo Drives series, featuring a rated current of 72 Arms and a peak output current of 140 Arms with a duration of 5 seconds. This drive supports a voltage rating of 208 to 480 V, includes a PROFIBUS fieldbus interface, and uses F2 controlled fan cooling. It has dual channel STO capability, a protection rating of IP20, and weighs 13 kg.
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Product Description:
The S7720A-PBF2-S3 is a Kollmorgen servo drive from the S700 Servo Drives series. It converts three-phase mains into precisely timed motor currents, enabling closed-loop speed and position control for industrial axes. The module interfaces with upper-level PLCs and safety circuits, forming a central actuator in packaging, material-handling, and continuous-process automation lines. Its control functions help the connected motor respond smoothly to command changes during indexing, synchronization, and steady-speed operation. That behavior is useful on axes that need repeatable starts, stops, and coordinated motion with other machine functions.
Continuous phase output reaches 72 Arms when the mains supply is within the 208–480 V range, and transient demand up to 140 Arms is tolerated for a 5-second overload window. The insulated-gate transistors switch at 8 kHz, balancing current ripple against switching loss. Thermal loading is capped by a 50 kVA input rating, while a 3 A brake channel releases holding brakes during controlled stops. Logic electronics draw 2 A from the auxiliary rail, and an expansion card dedicated to the fan controller governs the F2 controlled fan to maintain device temperature. Drive parameters and cyclic setpoints travel over PROFIBUS, and the IP20 enclosure suits cabinet mounting. A coldplate with coated PCBs increases resistance to airborne contamination and vibration.
A dedicated 24 V DC auxiliary bus energizes internal control circuits independent of the power stage. Independent control power lets the drive retain logic operation and communication when the main power stage is not active. Functional safety is handled by the S1-2 (S3) card and by Dual channel STO logic that disables torque without opening the mains. The housing measures 190 mm in width, 386 mm in height, and 244 mm in depth, while installation weight is 13 kg. The stated depth helps determine front-to-back clearance in enclosed panels, and the overall size supports orderly routing for power connections, control wiring, and airflow through the cooling path.
Frequently Asked Questions about S7720A-PBF2-S3:
Q: What is the rated input power for the S7720A-PBF2-S3 drive?
A: The S7720A-PBF2-S3 operates with a rated input power of 50 kVA.
Q: Which fieldbus interface is provided on the S7720A-PBF2-S3 servo drive?
A: This model supports PROFIBUS communication for integration with industrial networks.
Q: What cooling option does the S7720A-PBF2-S3 feature?
A: The cooling system uses an F2 controlled fan to manage operating temperatures.
Q: What are the rated and peak output current specifications of the S7720A-PBF2-S3?
A: The maximum rated output current is 72 Arms, with a peak output current of 140 Arms available for up to 5 seconds.
Q: Does the S7720A-PBF2-S3 offer safety features such as STO, and if so, what kind?
A: The S7720A-PBF2-S3 comes equipped with dual channel Safe Torque Off (STO) capability.
