To improve process reliability, quality and efficiency whilst cutting running costs, apply variable speed control to winders and unwinders in paper, steel, chemical and textile manufacturing processes. An AC drive retrofit can additionally enable higher winding and unwinding speeds without process interruptions, thanks to improved control performance.
For extremely rigorous winder control over a wide speed range, AC drives from Danfoss deliver precisely the correct torque range and resolution. Using AC drives you can therefore achieve high winder precision whilst saving energy.
When the winder or unwinder operates with constant braking cycles, then a Danfoss AC drive offers particular energy-saving advantages. During braking, the winder/unwinder returns a great deal of energy to the DC link of the drive. Normally this energy is dissipated by brake resistors. However Danfoss AC drives can facilitate significant energy savings by regenerating excess energy from the DC link to the mains, or by feeding the energy over the common DC bus to the winder drive.
The advantages of Danfoss AC drive control of winder and unwinder applications also include:
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Enables system integrators, machine builders and OEMs to design and build efficient industrial drives systems. Active Front-end (NXA), Non-regenerative Front-end (NXN), Brake Chopper (NXB) and Inverter (NXI) configurations are available.
Designed for a broad range of demanding applications, focusing on higher power sizes and system drives.
The VLT® AutomationDrive FC 301 / FC 302 is designed for variable speed control of all asynchronous motors and permanent magnet motors. It comes in a standard version (FC 301) and an advanced high dynamic version (FC 302) with additional functionalities.