Schneider HMI Programming for ALS Dosing and Dilution Control

Proposal for Programming Schneider HMI for ALS Dilution System

Project Overview

The project involves programming a Schneider Magelis GTU HMI to control and monitor a system designed for diluting ALS (SLES) 70% with water to a specified percentage (typically 25%) and managing the distribution of the diluted solution to multiple vessels. The system includes two pumps (one for ALS and one for water), a mixer, multiple valves, and measurement devices (flow meters and mass meters).

The goal is to develop an intuitive, user-friendly interface that allows for automatic and manual control, precise monitoring, and remote access. The HMI will interface with equipment from Invertek Drives (controlling pumps and the mixer) and Endress+Hauser (Promag and Promass meters).

System Components

1. Pumps & Mixer:

• Pump 1 (ALS): Controlled by Invertek Drive.

• Pump 2 (Water): Controlled by Invertek Drive.

• Mixer: Controlled by Invertek Drive.

2. Flow and Mass Meters:

• Promag Flow Meter: Positioned between the ALS tank and ALS pump for accurate measurement of ALS flow.

• Promass Mass Meter: Located at the output of the mixer, providing measurements before the diluted ALS is sent to the vessels.

3. Valves:

• 8 Electronically Actuated Butterfly Valves: For directing the diluted solution to the 8 vessels.

• 1 Extra Valve: For washout, ensuring the system is clean and ready for subsequent batches.

System Logic & Functionality Requirements

1. Control Panel with HMI Screen

• The HMI will provide a clear, user-friendly interface for operators to control and monitor the system.

2. Functionality:

• Set ALS Percentage Required (Standard = 25%)

• Operator inputs desired ALS dilution percentage (e.g., 25%) via the HMI, and the system will adjust flow rates accordingly.

• Set Total Batch Volume (Kg)

• Operator specifies the required batch size in kilograms, and the system calculates the necessary ALS and water quantities.

• Set Tank to Dose Into

• Operators can select which of the 8 vessels to dose the diluted solution into. The relevant actuator valve will open, and the system will verify the correct valve is open while ensuring others are closed.

3. Modes of Operation:

• Automatic Mode

• The system will execute start-up and shut-down sequences automatically, including:

• Starting pumps and mixer, ensuring correct flow rates via the Invertek drives.

• Water Pump Priority: The water pump must start slightly before the ALS pump to ensure that water is always entering the mixer before the ALS. This prevents concentration issues and ensures proper dilution. The HMI will be programmed to start the water pump a few seconds earlier than the ALS pump during operation.

• Monitoring flow (via Promag) and density (via Promass) for accurate mixing.

• Adjusting the ALS and water flow control valves as necessary to maintain the desired dilution.

• Verifying final quality using the Promass density meter and triggering alarms if values fall outside acceptable ranges.

• Manual Mode

• Operators can manually control:

• Selection of pumps (ALS, Water) and adjustment of speeds via the Invertek drives.

• Opening or closing of specific valves, including the washout valve for cleaning.

• Control of the mixer operation.

4. Density Monitoring & Quality Checks

• Promass Output: Provides real-time density monitoring to verify the quality of the diluted solution.

• Alarms: Configurable alarms will trigger if the density is outside acceptable limits, alerting operators to potential quality issues.

5. Remote Access:

• Remote Monitoring and Control: The system should allow operators to access the HMI remotely for monitoring and control purposes. This will be enabled via Vijeo Design’Air or web server capabilities to provide access from PCs, tablets, and mobile devices.

• Secure Access: Secure login and authentication should be implemented to ensure only authorized personnel can control or modify the system remotely.

Wzór przemysłowy Process Automation Inżynieria elektryczna Inżynieria Environmental Engineering Manufacturing Engineering

Numer ID Projektu: #38694256

O projekcie