S7720C-PNF2-S4 Kollmorgen
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The Kollmorgen S7720C-PNF2-S4 is an S700 Servo Drive that weighs 13 kg and has dimensions of 244 mm by 386 mm by 190 mm. It provides a peak output current of 140 Arms, a rated current of 72 Arms, and a rated input power of 50 kVA. The drive supports dual RJ45 Profinet ports with RT and IRT mixed mode and features a dual channel STO safety capability.
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Product Description:
The S7720C-PNF2-S4 servo drive is manufactured by Kollmorgen and belongs to the S700 Servo Drives series. The unit conditions three-phase mains power and generates pulse-width-modulated output for synchronous or induction motors used in industrial automation. By combining high-speed current loops with fieldbus connectivity, the product provides axis control, torque regulation, and integrated safety in packaging, printing, and material-handling machinery. As a drive rather than a motor, it forms the intermediary between the controller and the mechanical load, converting commands into precise electrical power while monitoring feedback. Fast closed-loop response helps the axis follow changing motion commands while keeping speed and torque behavior stable during routine machine operation.
The electrical envelope starts with a line voltage window of 208-480 V. Continuous output is rated at 72 Arms, while bursts up to 140 Arms cover acceleration peaks. A supply rating of 50 kVA sets the upstream power requirement for the unit. The power stage switches at 8 kHz, and the internal voltage drop between the DC bus and motor leads is 6 V. The drive may be powered up or de-energized 30 times per hour without excess heating. Dual RJ45 sockets provide the Profinet channel for direct daisy-chain wiring, which supports straightforward network routing when several axes are connected in sequence.
Mechanical integration is eased by the coldplate option, which transfers heat into a cabinet-mounted sink instead of relying on forced air. A fan-controller expansion card remains available for applications that use internal airflow management. The housing measures 244 mm deep, 386 mm high, and 190 mm wide, and it weighs 13 kg, enabling vertical panel installation next to other S700 modules. At full load, acoustic emission reaches 68 dB(A). Safe torque off is implemented by a dual channel STO circuit that meets functional safety requirements without additional contactors. For deterministic Ethernet control, the drive supports Profinet mode RT / IRT Mixed, allowing real-time motion data and standard TCP traffic to share the same cable.
Frequently Asked Questions about S7720C-PNF2-S4:
Q: What type of Profinet connections are available on the S7720C-PNF2-S4?
A: The S7720C-PNF2-S4 servo drive is equipped with dual RJ45 Profinet ports for communication.
Q: What is the peak output current of the S7720C-PNF2-S4 servo drive?
A: This model supports a peak output current of 140 Arms for high-performance requirements.
Q: What is the switching frequency of the S7720C-PNF2-S4 servo drive?
A: The S7720C-PNF2-S4 operates at a switching frequency of 8 kHz.
Q: What safety feature does the S7720C-PNF2-S4 provide for motor control?
A: The S7720C-PNF2-S4 offers dual channel STO (Safe Torque Off) capability.
Q: What is the rated input power specification for the S7720C-PNF2-S4?
A: This servo drive has a rated input power of 50 kVA for standard operation.
