Siemens TIA Portal Module 090-020 manual Station description Tank

Industry Sector, IA&DT

3.2Station description

Tank 1 Tank 2 Tank 3

Auto-Man START T1 supply T1 drain T2 supply T2 drain T3 supply T3 drain Container Motor

An ink mixing station is controlled using a SIMATIC S7-300 in automatic or in manual mode. In the 'Automatic' mode, the three tanks are filled using a two-point control mechanism.

At minimum fill level the supply valve of the corresponding tank is opened automatically and only closed once the maximum fill level is reached.

The preset program is run when the Start button is pressed.

First, the drain valves are opened and the corresponding target quantities are filled into the container from the separate tanks.

After closing the drain valves, the mixer motor is started.

At the end of the mixing period and after a short rest period, the drain valve of the container opens and the finished color mixture is drained.

The start function is enabled as soon as the container is empty. The start button lamp is lit and a new color mixture can be started.

In "Manual" mode, the automatic drain is terminated; all valves and the mixer motor can then be operated manually.

The lamps in the buttons for manual operation are lit.

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