The bottle filling plant of a brewery is largely PLC-controlled. In addition, a stand-alone system is to indicate errors such as e.g. tank overfilling or problems with the bottle conveyance in the existing display system.
The tanks from which the bottles are automatically filled were fitted with filling-level sensors each of which were connected to the free inputs of a Web-IO. If a jam occurs on the bottle conveyors, e.g. on account of a glass breakage, bottles approaching from behind are pushed onto an outflow, where a limit switch is actuated. This limit switch was also connected with the input of a Web-IO.
By programming, the inputs of the Web-IO were integrated via the W&T OPC server into the existing process display.
1. The required filling level sensors and limit switches were connected to the inputs of a Web-IO.
2. The Web-IO was plugged into a free Ethernet port and connected to a power supply.
3. The Web-IO was assigned an IP address.
4. Via the browser, the Web-IO was configured for OPC deployment.
5. By installing the OPC server, the sensors connected to the Web-IO were integrated into the process display.
Any other sensors/devices can also be connected to the inputs of the Web-IO as long as they have a floating contact or output a signal between -30 V and +30 V DC (switching threshold limit of 8 V +/-1 V). Other kinds of signals can be switched on via relays.
Additional application examples for Web-IO Digital