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VFD for non-newtonian mixing
Sorry that wasn't very clear. I need the motor to slow down during the non-Newtonian phase, and I believe this can be accomplished with torque control. At a constant speed, torque increases with viscosity and puts more stress on the mechanical system. It would seem that torque control can...- mango1337
- Post #5
- Forum: Chemical process engineering
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VFD for non-newtonian mixing
I am concerned about the drive slowing the motor down once the load on the system increases due to the viscosity change. From what I have read, it seems that torque control is how this would be accomplished. Does that check out? The CFW700 has an auto tune routine and I can manually enter...- mango1337
- Post #3
- Forum: Chemical process engineering
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VFD for non-newtonian mixing
I have a batch mix tank where the fluid undergoes a rheopectic viscosity change (thickens when mixed). The process begins as a Newtonian fluid and undergoes the change after the addition of one chemical. The chemical is metered in fairly slowly, however the viscosity change happens fairly...- mango1337
- Thread
- Replies: 6
- Forum: Chemical process engineering
