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Sohel

Load Cell Module Advantages over other PLC Controllers / dedicated Controllers & signal Conditioners

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Dear Support Team

Hello & A very Good Evening

 

 

I am new to Load cell modules IO-LC1/IO-LC3.

Would You please let me know the basic info about Load cell modules.

How it works??

Its advantages over other dedicated Controllers in the market..

How shall I convince my customer to go for Unitronics Load Cell modules IO-LC1/IO-LC3. over other similar products in the market.

 

 

Kindly reply.

 

 

Thank You & Best Regards

Sohel

 

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Hello Sohel,

VisiLogic Help have a good explanation of all LoadCell functions. I recommend you to start from Loadcell Quickstart.

Following links will help you:

http://www.unitronics.com/KnowledgeBase/U90Ladder/Ladder/Functions/Special_functions/Loadcell/loadcell.htm

http://www.unitronics.com/Downloads/Support/Technical%20Library/IO%20expansion%20modules/IO%20Expansions/IO-LC1%20IO-LC3.pdf

 

Go to Menu->Help->Examples, open directory

C:\Program Files (x86)\Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\Loadcell

and open one of examples.

At the time you know to work with Load Cell modules, you will know how to convince your Customers.

I hope this helps.

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I use several rice lake SCT10 signal conditioners and I prefer them over the unitronics units because they have a display on them. I have them facing the operator who is loading the machines (they are on loadcells) and the analog 0-10V signal goes to the PLC to use for the logic. The SCT10 is $400 so it is a bit more than the unitronics unit.

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Hi,
I work program for the mixer of powder adhesives and mortars, capacity is 2 tons, complete mixer is set to weight load cell, the mixer is filled from five silos, scales I set the two points, I set the zero and tare, program works very well .PLC (v570)more I have not installed, all functions of trying on the desk and scales I adjusted in grams to be easier to work with simulations of charging and discharging.
So I came to a problem because workers empty mixer in 25 kg bags.

In the first case: Mixer can not throw out the entire material, remains undetermined amount of material of less than 25 kg.
in the latter case: In a mixer remained quantities of less than 25 kg (23,16,18,5 kg) which is insufficient for filling bags.
I'm interested in, in any way solve this problem, because the residual quantity in the mixer affects the recipe of the product.
How do automatic "tara" after every discharge mixer. I had some ideas that were not correct. The requirement for "start" I chose to value the balance is enough for about zero
I ask for a little help

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On 9/9/2016 at 4:18 AM, denogoro said:

Hi,
I work program for the mixer of powder adhesives and mortars, capacity is 2 tons, complete mixer is set to weight load cell, the mixer is filled from five silos, scales I set the two points, I set the zero and tare, program works very well .PLC (v570)more I have not installed, all functions of trying on the desk and scales I adjusted in grams to be easier to work with simulations of charging and discharging.
So I came to a problem because workers empty mixer in 25 kg bags.

In the first case: Mixer can not throw out the entire material, remains undetermined amount of material of less than 25 kg.
in the latter case: In a mixer remained quantities of less than 25 kg (23,16,18,5 kg) which is insufficient for filling bags.
I'm interested in, in any way solve this problem, because the residual quantity in the mixer affects the recipe of the product.
How do automatic "tara" after every discharge mixer. I had some ideas that were not correct. The requirement for "start" I chose to value the balance is enough for about zero
I ask for a little help

I will like to help but I need more information about your system.

First:

If you change recipes, then you must empty the mixer. You need to find out a way to empty the mixer (blow, vacuum, etc).

Are you measuring the mixer? Or just the amount you send from silos?

 

 

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On 12/2/2015 at 6:05 AM, Sohel said:

Dear Support Team

Hello & A very Good Evening

 

 

I am new to Load cell modules IO-LC1/IO-LC3.

Would You please let me know the basic info about Load cell modules.

How it works??

Its advantages over other dedicated Controllers in the market..

How shall I convince my customer to go for Unitronics Load Cell modules IO-LC1/IO-LC3. over other similar products in the market.

 

 

Kindly reply.

 

 

Thank You & Best Regards

Sohel

 

I change some dedicated modules to IO-LC1 and IO-LC3. When you learn how to use the modules, then you can do anything a dedicated module can do and for less money. I have some projects where we built data tables, print bar codes, etc. for much less than a dedicated module with Ethernet connection for example.

I recommend you buy 1 IO-LC1 and play with it and learn how it works and all the stuff you can do.

Then start designing your projects to sell to the customers.

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Thank you for expressing their desire to help

 
Mixer is set directly on the scale (cell), sets the weight of the mixer, a backlog of dust and waste are zeroed. In one day mixer produces one type of product. After each cycle, which lasts for one hour, re-charging according to the same recipe.
The following day it is another product and other recipes.
 

The rest of the product is less than 25 kg workers are not inserted in the bag, he remains in the mixer. When you initiate power-up the next charging cycle, the rest of the weight scale continues to read, automatically the first component will be less of the weight of the rest
for example:
at the start of scale is 0
From the first tank is dosed 150 kg according to recipe
When the scales show the 150, starting the dosing tank 2
From the second tank 145 kg
When the scales show 295 (150 + 145), starting the dosing tank 3, etc.
From the third tank 220 kg
From the fourth 20 kg
From the fifth 10 kg
Total 545 kg - when mixer complete mixing is packed in bags of 25 kg
545/25 = 21.8 - bag - the rest of us 20 kg
Start the next cycle on the scale shows 20 kg and should be zero
From the first tank will be filled up only 130 kg, and should be 150 kg

I hope that is clearer

I tried to add sequences that surplus (example: 150 + 20) or at the end of the cycle we say the rest of the 15 kg (25 kg bag filling has a tolerance of + -2%, the rest is not always the same) again have to bring balance to zero.

best regards

maybe from wood can not see the forest

KomoVaga10.vlp

KomoVaga10.vlp

Edited by denogoro

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This is an older question but I thought I would respond.  Having written mixer programs before this is the method I used to arrive at the correct weight for each batch run.  At the beginning of the day the mixer was zeroed.  But after that never again.  In my process each batch had a recipe of water, gypsum and sand.  At the beginning of each batch all that is needed is to look at whatever the mixer has as its weight at the beginning of the batch and look for the difference in weight as the ingredients are being added.  A screen shot of a main viewing screen has been attached as an example.  In the program you just use the weights as they are at the beginning of each step as the zero point.

 

Keith

 

Allied Batch Run Screen.jpg

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Hi

Thank you for your answer.
The first day produced only one product in multiple cycles (20-30) so that rest does not affect the composition of the recipe.
The problem I solved by, the actual value of scale (ML0) stored in the variable ML25 ,when finished the cycle, the value of ML0 record as a "rest" in a separate variable ML36 (pressing the "discharge ends") and subtract it from the variable ML25 and stored in a new variable that we show on the display (ML44). All the time weighing variable "rest" is subtracted from the Variables ML25 and the end of the cycle recording real value scale (ML0) in variable "rest". I hope that I managed to explain my decision. Excuse the bad English

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