Beer Level Float

The Beer Level Float can be seen through the site glass in the side of the beer bowl.
When the float, in the beer bowl, is sitting on the bottom - with no beer in the bowl - the input on Siemens S7 processor - I0.0 should be lit.
I have seen cases when the float is at the bottom - and the input I0.0 was not lit.
A smack with a rubber hammer - on top of the bowl will cause the switch to close and the I0.0 light to come on.
We have ordered and received replacement floats to solve this problem.
Contact G.W.Kent at: info@gwkent.com - to order a replacement.

Ladder logic for the Siemens S7 processor

Screen shots from the Step 7 software of the ladder logic.

Ladder logic program for the Siemens S7 plc in the beer bottling line 1plc.mwp

To open this file you need to use the Demo version of the Siemens STEP 7-Micro/WIN software which will only work with Windows XP and Windows 2000 (it does not work with Windows 7)

Fill head does not move up and down smoothly

If the the fill heads do not drop down smoothly.

It may be that the guide block is loose.

If the block that guides the fill head moves up and down (see photo) - it can cause the fill head to not drop smoothly.

You can tighten this block by removing the V-handle and tighten the retaing nut.

Wiring the Beer In Valve for CIP

The Beer in Valve is controlled by the float valve. Once the float says that the bowl is full the Beer in Valve is closed.

To keep the valve open while running cleaning solution through the machine - you need to keep the Beer in Valve open.

The beer valve is tied to the Siemens processor through o1.0. You will find o1.0 (or 1.0) down on the terminal strip in the bottom of the control cabinet.

For the switch I used a SPDT switch with (3) terminals. Mounting it in the wire tray cover on the far right (doesn't show up in the picture)

Move the wire coming in from the beer valve at o1.0 - over two places to an empty terminal.

Connect the center terminal of the switch - to the new Beer in Valve terminal.

Connect one of the other switch terminals to the original o1.0 terminal that goes to the processor.

The third switch terminal is connected to the +24VDC supply.

In one position the Beer in Valve would be tied the usual circuitry and be controlled by the float switch.

In the other position the Beer in Valve is 'tied high' causing the beer valve to be open for CIP cleaning.

Siemens S7-200 processor - I/O info

I/O for the Siemens S7-200 processor used in the new bottling lines.

This document also includes some of the processor logic.

The above .pdf version is hard to read.

Here is a .dwg file that you can view with Autodesk's True View.

or a .jpg file.

This sites have links to specifications and product manuals etc.

S7-200 processor.

Water in

The Beer Bottling Monobloc requires water in (3) locations.

- Rinser Pump

- FOB Pump

- Vacuum Pump - see - Vacuum Pump - water ring

The Rinser Pumps can be connected to a vessel containing rinse/sanitize water.

The FOB Pump can be connected to a vessel that contains water suitable for FOBing.

These vessel need to provide a flooded input to the pump.

If the Rinsing and or FOB functions will be done with by city water pressure - the pumps can be bypassed.
You can either plumb the water to the pump and disconnect the pumps from the control panel.

Or you can bypass the pumps entirely and plumb directly to the 3/4" id Rinser hose and the 1/2" od stainless steel FOB line.

Water connection & pump photos.

The pump contactor can also be used to operate a water solenoid. The output of the contactor is 230VAC. You will need a solenoid with a 230V coil or a 230V transformer can be connected to the contactor to run either a 120 or 24VAC coil.

Electrical Diagram for Mitsubishi Processor

Click to go to drawings

1 0f 3 - motors and contactors
2 of 3 - main motor and drive3 0f 3 - processor drawing