S7720F-NANA-PA Kollmorgen
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The Kollmorgen S7720F-NANA-PA is a S700 Servo Drive with a rated input power of 50 kVA and a voltage rating of 208 to 480 Volts. It has a peak output current of 140 Arms, analog input resolution of 1.25 mV, and features onboard EtherCAT and CANopen. This servo drive weighs 13 kg and emits a maximum noise of 68 dB(A).
Internal Product Review
The S7720F-NANA-PA is a Kollmorgen S700 servo drive designed for high-demand motion systems, with a 208...480 V rating and 72 Arms rated current. Integrated EtherCAT and CANopen support streamlines network commissioning, while dual-channel STO adds a strong layer of machine safety. Clean power switching at 8 kHz and 140 Arms peak output current make the drive a very capable choice for dynamic servo applications.
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Product Description:
The S7720F-NANA-PA is a digital servo drive produced by Kollmorgen for the S700 Servo Drives series. It is intended for cabinet installation and regulates torque, velocity, and position for brushless motors used in packaging lines, material-handling axes, and coordinated process stations. The drive accepts encoder feedback, generates pulse-width-modulated output, and connects to higher-level control systems through onboard real-time networks. This arrangement allows the unit to support responsive motor control in applications that need accurate speed regulation and repeatable positioning.
The electrical range begins with a mains input of 208 to 480 V, making the unit suitable for common three-phase industrial supplies. During continuous duty, the inverter delivers 72 Arms, and it can tolerate short-term overloads of up to 140 Arms during acceleration bursts. Line demand can reach 50 kVA, so the upstream supply path must be sized for that load. A switching frequency of 8 kHz drives the IGBTs, balancing acoustic behavior and current ripple. The output current form factor is 1.01, the residual voltage drop is 6 V, and the analog command channel has a resolution of 0.38 mV for fine reference scaling within the onboard EtherCAT and CANopen control structure.
The housing measures 386 mm in height, 190 mm in width, and 244 mm in depth, while the total weight is 13 kg for dense panel layouts. During standby, the drive dissipates only 24 W of heat, and airborne sound remains below 68 dB(A) during operation. For functional safety, the hardware includes dual-channel STO, allowing safety stop functions without external relays. Control boards are available in standard and coated versions for humid or dusty locations, and the fieldbus circuitry is already installed so no expansion slot is required. The analog input stage resolves 1.25 mV, which supports stable low-speed regulation and precise command tracking.
