Operational reliability function and consistent product quality solved by an ABB industrial drive
In the process, the extrusion screw compresses the plastic powder up to 200 bar/mm2. At the same time, the screw mixes the powder and admixtures together, so that the plastic gets its final composition. The process heats the powder to a temperature of 180 °C before it goes to the forming die. The drive therefore needs to produce high torque at a relatively low speed. The speed accuracy also needs to be very high. That’s why the ABB industrial drive was a successful choice for this kind of application.
Industrial drive is the first AC drive which can produce enough high torque with sufficient speed accuracy in the extruder process. The users have also been very satisfied with the ABB industrial drive's control interfaces. Satisfaction with the control possibilities of the process has increased.
Plastic extruder system diagram
Solved Problem
- High starting torque requirement
- Accurate speed control required at low speeds
- Minimal maintenance required
Solution
- Motor: 22 kW, 1500 rpm
- ABB industrial drive: 40 kVA
- Speed range: 0 to 1800 rpm
Benefits
- Accurate speed control without pulse encoder
- Reliable start under all conditions
- Consistent product quality
- Reduced maintenance cost
- Increased user friendliness