Powder brake CTS-PBR series

electromagneticfor unwindertension control

Overview
Electromagnetic powder brake designed for precise web tension control in unwinding and rewinding processes. Torque is regulated by the attraction and release of magnetic particles, enabling fine adjustment across a wide range of roll diameters. Integration of sensors and control electronics allows automation of tension management from large to small rolls.

Operation
The unit requires a 24 V DC power supply. Control is via a 0–10 V input that can be driven by a manual potentiometer or by PWM-based control electronics. Sensor inputs (diameter sensors, dancers, load cells) can be processed to adjust braking torque for real-time tension regulation.

Assembly

• Mounting options for cantilever (single-end) shafts.
• Mounting options for double-supported shafts.

Web tension control

• Open-loop control: Adjustment is performed manually by an operator or by a sensor measuring roll diameter; there is no automatic feedback correction in real time.
• Closed-loop control: Uses feedback devices such as dancers or load cells to compare measured tension against a set reference and automatically adjust braking torque for higher process accuracy.

Applications
Suitable for unwinding/rewinding tasks in packaging, printing, textile, paper and other industrial processes where stable web tension is required.

Technical specifications

• Power supply: 24 V DC required.
• Control signal: 0–10 V input; compatible with manual potentiometer or PWM electronics.
• Braking principle: magnetic particle / electromagnetic powder torque control.
• Sensor integration: diameter sensors, dancers, load cells supported for automated tension control.
• Control modes: open-loop (manual or diameter-based) and closed-loop (dancer, load cell feedback).
• Mounting variants: cantilever and double-supported shaft configurations.
• Available versions: standard and stainless-steel (INOX) options; mounted variants on request.
• Documentation: product datasheet and technical drawings available (PDF on request).