EPS is a control dancer and used for closed-loop tension control on winding of endless material. It is a considered and "active" dancer control system.
EPS is operated as an electrically controlled P/F actuator providing a large range of adjustment for the user-set desired tension level.
The position of the dancer is measured by means of a rotary encoder, giving a standard output signal specially-designed to be able to maintain precise tension control even under high-dynamic speed variations.
The position of the dancer is measured by means of a rotary encoder, giving a standard output signal specially-designed to be able to maintain precise tension control even under high-dynamic speed variations.
- Wide adjustable tension range
- Superb start/stop performance characteristics
- Compact design requires minimal space for mounting
- Maintains precise tension control even under high-dynamic speed variations
- Extremely robust design is maintenance-free
Functionality using the example of a typical unwinding process:
At the unwinder a motor-driven chuck supports the material roll.
The following process needs material feeding with process-specific dynamic and well-defined tension.
EPS serves as link between unwinder and process.
- The material is guided S-shaped over the dancer pulleys.
- A torque, which acts on the dancer, is generated electropneumatically.
- Tension Fz is proportional to the upcoming torque.
- The actual rotation angle of the dancer is output as electric signal.
- The dancer is in position control.
Material accumulator
Additionally EPS functions as an accumulator.
It can dispense or receive the material depending on the dancer position.
Deflection left:
Ready to dispense
Center position:
Ready to dispense or receive
Deflection right:
Ready to receive
