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By Joe Tauser · Posted
Yep. Subroutines are the way to go. You're on the right track. Joe T. -
As Gabriel said - how is your input scaled? Try linearizing the input over the voltage range you want. This will linearize a 14bit analog input over the 0-1000 mV range you need - setting input voltage equal to bar essentially. 2v = 2bar, 10v =10 bar -
Hi Joe, I appreciate the quick response. I'm particularly interested in thoughts about how I might adapt the general control strategy used for your customer's security gate to a smaller, more precise hydraulic mechanism like ours. Any specific functions that your customer found particularly useful for managing hydraulic operations? I'm building the logic in a similar way I would approach an Allen Bradley program. Main Routine calls separate input output routines (I believe in another post you call inputs first and outputs last). So it's looking something like this: Inputs Conditions for operation, anti tie-down, and safety interlocks Cylinder Adv/Ret Timers Counters Faults Outputs I hope this makes sense. -
By Joe Tauser · Posted
I have a customer that uses hydraulic cylinders to raise and lower a security gate at an electric utility transmission station. There' s really not much to it. Joe T. -
Hello, We're looking for a lower cost solution to control a handheld hydraulic clinch unit. Currently we're using a discontinued Schneider Electric all in one PLC/HMI. We were given a SM35-J-R20 to test out so I'm working with Visilogic to redevelop the logic from SoMachine Logic Builder. If I can get this to work we will be fitting all of our units with this, or a more compatible PLC/HMI combo from Unitronics. So far the tutorials have been helpful when trying to piecemeal a concept of how I will control this unit. I haven't seen much in the way of others using the device to control a Hyd pump, and advance/retract a cylinder, and activating a hi-press solenoid. I'm not supplying specific numbers at this time, just curious if there are other out there controlling similar units with these combo controllers. Thanks! -Joe
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