Hey guys,
I've got a system that will apply an even coating to a conveyor belt. My product is moving at a variable speed on this belt.
The system has 2 pumps:
- Pump 1 is for the Water
- Pump 2 is for the Product
- These will be mixed at a ratio, 10:1
The amount of mixture to be applied to the conveyor belt will be a linear relationship where:
- Mixture flow rate = Constant * Belt Velocity
My question relates to Ratio and Cascade controls using the PIDE FB. Logix5000 v21.03 on ControlLogix 1756
From what I have read here it looks like I should be running Loop 1 (Water) as a Ratio to my Conveyor belt speed. Then I should run Loop 2 (Product) as a Cascade to Loop 1, but really it is just a Ratio to Loop 1...
Is this correct?
I am attaching a quick schematic of my mechanical system, hopefully someone else has come across exactly this problem before
View attachment Process Schematic.pdf
I've got a system that will apply an even coating to a conveyor belt. My product is moving at a variable speed on this belt.
The system has 2 pumps:
- Pump 1 is for the Water
- Pump 2 is for the Product
- These will be mixed at a ratio, 10:1
The amount of mixture to be applied to the conveyor belt will be a linear relationship where:
- Mixture flow rate = Constant * Belt Velocity
My question relates to Ratio and Cascade controls using the PIDE FB. Logix5000 v21.03 on ControlLogix 1756
From what I have read here it looks like I should be running Loop 1 (Water) as a Ratio to my Conveyor belt speed. Then I should run Loop 2 (Product) as a Cascade to Loop 1, but really it is just a Ratio to Loop 1...
Is this correct?
I am attaching a quick schematic of my mechanical system, hopefully someone else has come across exactly this problem before
View attachment Process Schematic.pdf