Lower Mass Flow Weigh Hopper Assembly

The lower mass flow weigh hopper, otherwise known as the weighed common hopper, is used to determine the actual processing rate of the processing machine so that the blender can be slaved in to run at the learned rate. The hopper is constructed of spun aluminum and is of the mass flow type (See the glossary in the Appendix). It is supported by a load cell, and will carry a weight of material depending on how much is flowing into the hopper from the metering augers, and how much is flowing out of the hopper, dictated by the processing rate of the processing machine.

The computer uses the mass flow hopper flow rate (the differential rate), along with the known total rate from the weight loss feeders to determine the actual processing rate of the processing machine. The blender output rate is then adjusted to match the learned processing rate. This method of operation provides very accurate slave in of the blender to the processing rate, and eliminates the need for a mixing hopper.

The lower common weigh hopper is also equipped with a high level proximity level sensor to allow manually adjusted volumetric operation of the blender in the event of computer failure.

Figure 4: Weigh Hopper Assembly

Note: The lower or common mass flow weigh hopper uses the change in weight over time, of material contained in the hopper over time to calculate it’s discharge rate (differential rate). This learned discharge rate is then summed with the known total metering rates of the blender feeders to learn the actual processing rate of the processing machine. The blender output rate is then adjusted to match the learned processing rate, eliminating the need for a blender mixer.

“Fixed Rate” mode

The lower mass flow weigh hopper may be replaced by a collection hopper with “high” and “low “ level switches on higher capacity blenders. This configuration controls the blending system rate based on material level rather than material weight.

Continuous Loss-in-Weight Blenders Chapter 2: Functional Description

060, SLC 5/04, 015, 600, 100 specifications

Sterling 100,600,015 SLC 5/04,060 is a robust and versatile industrial automation controller designed to meet the demands of various industrial applications. As part of the Sterling lineup, this model is particularly known for its reliability and advanced features that enhance operational efficiency.

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The controller operates on the well-established Allen-Bradley SLC 500 platform, which is known for its stability and ease of use. With a processing speed of 100 kHz, the SLC 5/04,060 can handle multiple tasks simultaneously, ensuring precise control over processes. This speed is complemented by a large memory capacity, allowing for complex programming and data storage without compromising performance.

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The controller is also equipped with advanced diagnostics capabilities, enabling users to monitor system performance in real-time. This feature not only helps in quick troubleshooting but also aids in predictive maintenance strategies, reducing downtime and optimizing productivity.

In addition to its hardware features, the Sterling 100,600,015 SLC 5/04,060 supports a range of programming languages, including ladder logic, structured text, and function block diagrams. This versatility allows engineers and technicians to choose the most suitable approach for their specific projects, making the development process more intuitive and efficient.

Overall, the Sterling 100,600,015 SLC 5/04,060 is a powerful and adaptable solution for industrial automation, combining advanced technology with ease of use, making it an ideal choice for businesses seeking to enhance their operational capabilities and efficiency.

Sterling 015, 100 Lower Mass Flow Weigh Hopper Assembly, Weigh Hopper Assembly Fixed Rate mode

Models: 060 SLC 5/04 015 600 100