Pneumatic Brake
Air-actuated pneumatic brake that generates braking torque by friction, used on unwind stands to control web tension.
Brakes and Clutches
Tension Controller
Closed-loop PID tension controller that keeps material at the same tension at every roll diameter during unwinding and rewinding.
Awaiting customer approval
Product images
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Technical specifications
| Control method | Microprocessor, closed-loop PID; with load cell or dancer potentiometer |
|---|---|
| Dimensions (W × H × D) | 144 × 144 × 95 mm |
| Panel cut-out | 138 × 138 mm |
| Display | LCD 4 × 20 |
| Power supply | 230 V AC +10% / −20%, 50–60 Hz |
| Inputs | Load cell, external start, external set |
| Outputs | 0–10 V DC analogue; 0–24 V 4 A brake output; stop output |
| Weight | 0.5 kg |
| Sensor | “0–5 V analogue colour sensor or fork sensor” (as written in source)to be verified |
Values are taken from manufacturer sources and may vary by order.
Rows marked “to be verified” show differing source values; they will be confirmed.
Datasheet (PDF) — Datasheet in preparation.
Overview
The tension controller (tension control system) is a microprocessor-based controller developed for precise winding and unwinding. It keeps the material at the same tension at every roll diameter as the roll is unwound and rewound. Once the required tension is set on the unit, it controls the unwinder, rewinder or pull section according to the signal from a load cell or from the potentiometer of a dancer roller.
Control is by closed-loop PID. This helps prevent problems such as stretching and slackness in the material and, on printing machines, print misregistration. Its ease of use saves the operator time. Technical values, including dimensions, inputs and outputs, are listed in the table below.
Features
- Microprocessor-based, closed-loop PID control
- Works with a load cell or a dancer roller (potentiometer)
- Load cell or manual operating mode
- Control of rewind, pull and unwind motors, brakes and proportional valves
- LCD display and easy operation
- Easy connection
- Analogue output and brake output
- External set and start, timed start and stop output
Applications
The tension controller is used on slitting, flexographic and rotogravure printing, laminating, profile wrapping, paper, textile and plastics machinery. It is commonly used on unwind stands with a magnetic particle brake, or with a pneumatic brake through a proportional valve.
Requesting a quotation
- Machine type and the section to be controlled (rewind, unwind or pull)
- Material type, width and the required tension range
- Line speed, with maximum and minimum roll diameter
- Details of the existing brake, motor and drive
- Preferred measuring method (load cell or dancer roller)
- Panel mounting arrangement and quantity
You can send your request through our contact page.
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