Scaled value with S7-300

tulip

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Oct 2005

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• Sep 1, 2010

• #1

We have scaled analog input value of stone weight on conveyor.We want to see this value be ton/hour because this value instant value.How can we do this?Scaled value must multiple 1000 and divide 3600 sec or not...
Thanks in advance for helps...

 

xzen

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Jun 2006

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• Sep 1, 2010

• #2

You need to know the speed and length of the conveyor.

 

tulip

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Oct 2005

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• Sep 1, 2010

• #3

We are reading this instant value on load cell units ( units Kg)via analog input module and scaling .Therefore we dont need acknowledge what you mention.

 

bhavik

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• Sep 1, 2010

• #4

Just one quick query: You want to measure speed of the Conveyor or Tons of material passing.

 

xzen

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Oslo

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• Sep 2, 2010

• #5

The output in ton/hour is of course relative to speed.
The formula to find output is:
Output = speed * conveyor_instant_weight / conveyor_length

Example:
The conveyor moves at 50 m/min = 3000 m/h. The weighing conveyor itself is 10 m long. You have X tons of stone on the conveyor (instant weight). You want to calculate output Y in units of ton/h.
Y = 3000 m/h * X ton / 10 m = 300*X ton/h