MICRO SERVICES GROUP, Inc.

PROCESS CONTROL SYSTEMS

| General Process Control | Textile Opening Room Controls | Textile Cooking Room Controls

Textile Opening Room Controls

Opening Room

PRODUCT OVERVIEW: Micro Services Group Opening Room Control is an advanced Programmable Logic Controller (PLC) system for integrating the control of all of the equipment in your opening room. Our system provides ladder logic programming for all control functions involved in opening lines. Replacing existing relay logic or separate controllers provides more flexibility. Delays and timing sequences can be added to optimize production. Varying the speeds of feed motors creates a nonstop feed condition that allows better cleaning and opening of the cotton. Touch-screens like the one above provide information and control in an easy to understand format.

SYSTEM DESCRIPTION: Our PLC is connected to motor starters and protectors that we or you can provide. The PLC is attached to a color, industrial keyboard / display. This is used to graphically display the status and setup condition of each line. Alarm messages lets the operator know any error conditions. The display shows the status of all input and output conditions. It is also used to startup variable speed motor control for optimum operational speeds.

The PLC also attaches to any fire suppression system to ensure appropriate action in case a fire in any part of the blend lines is detected. This PLC system can be programmed for many different setups for various blends or operating conditions. Data from the PLC can be exported to other monitoring systems if needed.

All PLCs are networked together and by addressing a modem we can troubleshoot the system from a remote computer. All PLC parts are readily available and the control system power is protected with an AC power line conditioner.

Installation includes connection of all signal and control wiring inside our cabinet and system checkout. Your operators and maintenance personnel will be trained during installation.

CONTROL STRATEGY: Control in this system is based on calls (demands) from the output end back toward the beginning of the opening line. The setup selected generally determines the valve settings that control the direction of stock flow. Different setups direct the flow through different process machines. Valves can also be used to divide a single flow to two destinations where needed. This can be controlled by both calls and timing as needed.

Single button startup and shutdown sequences the individual machines that comprise a line to ensure that the line starts up smoothly and reduces motor load by not allowing too many motors to start at one time. The control possibilities are greatly expanded compared to older systems. Critical motor speeds can be sensed to prevent chokes and stop a motor before damage to equipment can occur. Other voltages, currents, temperatures or other variables can be sensed and reported or controlled as needed. Motor speeds can be controlled by using pressure sensors or by the number of machines calling for stock.

The color display graphically indicates the way the machines are connected for a particular setup. Error messages indicate the alarm conditions and greatly decrease the time necessary to locate problems.

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