S7720A-NANA-F2 Kollmorgen
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The Kollmorgen S7720A-NANA-F2 is a servo drive from the S700 Servo Drives series and weighs 13 kg. It offers a rated output current of 72 Arms, a peak output current of 140 Arms for 5 seconds, and operates at a voltage range of 208 to 480 V with a rated input power of 50 kVA. The servo drive features dual channel STO capability, includes EtherCAT and CANopen onboard, and provides an enclosure protection rating of IP20.
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Product Description:
The S7720A-NANA-F2 is a servo drive produced by Kollmorgen in the S700 Servo Drives series. It converts three-phase mains power into regulated AC output that controls servo and induction motors in automated assembly lines, gantries, and top-loading robots. EtherCAT and CANopen ports are built directly into the controller, so axis commands and diagnostics travel over standard fieldbus channels without an expansion card. This integration reduces wiring complexity and keeps synchronization tight between the drive, the PLC, and the plant safety system.
The drive delivers a rated output of 72 Arms, allowing continuous torque production from medium to large motors at full line voltage. For acceleration or shock loads, it can supply a peak of 140 Arms for 5 seconds before returning to nominal current. Regenerated energy is handled by an internal chopper with a continuous brake power capacity of 8 kW. Pulse-width modulation is executed at 8 kHz, balancing torque smoothness with manageable switching losses, while the input section accepts three-phase supplies from 208–480 V. A 50 kVA input rating and 1135 W of heat dissipation at 480 V require cabinet airflow or the optional cold plate, which engages the heat-sink fan once its surface reaches 80 °C.
An integrated dual-channel STO circuit removes gate-drive power on two independent paths, eliminating motor torque without external contactors. When bus energy exceeds the chopper limit, a 10 ohm external brake resistor can be connected to dissipate excess power and keep residual voltage drop at 6 V. The unit is housed in an IP20 enclosure for cabinet mounting, and disabled-mode losses are only 24 W, which helps limit standby heat. A mass of 13 kg supports cold-plate installation without extra reinforcement. The design also maintains a 1.01 current form factor, 68 dB(A) acoustic emission, and stable regulation with motor inductances down to 0.61 mH.
Frequently Asked Questions about S7720A-NANA-F2:
Q: What is the continuous brake power rating for the S7720A-NANA-F2 servo drive?
A: The S7720A-NANA-F2 servo drive has a continuous brake power rating of 8 kW.
Q: What is the rated input power of the S7720A-NANA-F2 from Kollmorgen?
A: This model supports a rated input power of 50 kVA, making it suitable for demanding drive environments.
Q: What kind of STO (Safe Torque Off) capability does the S7720A-NANA-F2 provide?
A: A dual channel STO (Safe Torque Off) capability is included with this drive for enhanced safety.
Q: What is the enclosure protection rating for the S7720A-NANA-F2 drive?
A: The enclosure protection for this drive is rated at IP20, which provides basic protection against solid objects.
Q: What fieldbus and communication options does the S7720A-NANA-F2 have onboard?
A: This servo drive features onboard EtherCAT and CANopen communication with no expansion card required.
