Radiator construction

Wow, all that talk of 4-20ma loop back took me back to working on skipwave frequency time pulse telemetry equipment and 4-20 transducers on A/B PLC’s. I’m glad I’m not fighting all that stuff anymore because the construction contracts always went out to the lowest bidder.

Garrett Ellison said:

Wow, all that talk of 4-20ma loop back took me back to working on skipwave frequency time pulse telemetry equipment and 4-20 transducers on A/B PLC’s. I’m glad I’m not fighting all that stuff anymore because the construction contracts always went out to the lowest bidder.

Click to expand...

I know what a PLC is but the rest? Might as well be quantum physics haaa

I think I was born a few decades too late

Allen Bradley PLC and 4-20 ma signal scalable pressure transducer. Used to read pressure and convert to 4-20 scale so plc could transmit to scada (supervisory control and data acquisition). The old skip wave stuff was an old BIF/Leeds and Northrup system wired to a dedicated t1 phone line system. It was based on levels being based on a 15 second cycle, and the on cycle would transmit at a set frequency and then the off cycle would “shift” the frequency down 85 hz lower. This converted to either 4-20 signal to a chart recorder, or to hand off automatic switches wired to a mv signal on the cards. L All this grand complication to monitor water tanks, pump stations, or whatever. That t1 line carried 18 different frequencies and everything attached to it attracted lightning like Ben Franklin on steroids. Ever use a Rycom selective level dB meter? You could read the dB level of all the frequencies from any location. The place I was at started converting to radio telemetry in 2012, it took about four years of budget constraints and red tape to get it completed. Also had a US Filter dial up telemetry system for a while, it was upgraded twice but was all outdated leftover equipment that lost support one year after installation because it was outdated by the time the proposal got approved for purchase. Gotta love government work!

Garrett Ellison said:

Wow, all that talk of 4-20ma loop back took me back to working on skipwave frequency time pulse telemetry equipment and 4-20 transducers on A/B PLC’s. I’m glad I’m not fighting all that stuff anymore because the construction contracts always went out to the lowest bidder.

Click to expand...

I learned on PLC1's in tech school. Used PLC2,PLC5, and SLC500 as well as about every other brand doing application work. Now we have ControlLogix with integrated motion control. You'd **** how easy it is to program now compared to the crappy file structures we used to have. If you have an input and you want to call it Mary, you name it Mary and it don't care. Sky is the limit. I can run 64 servo axis on one controller, all in perfect synchronization. Wrap hundreds of lines of ladder logic up into a add-on instruction and drop it into the program wherever it's needed and it takes up one rung. I've worked on diaper machines that had six controllers and 120 axes of servo motion and were 150 ft long. They spit out a lot of diapers in a hurry.


OK, enough BS'ing. Back to the radiator discussion.

gzig5 said:

I learned on PLC1's in tech school. Used PLC2,PLC5, and SLC500 as well as about every other brand doing application work. Now we have ControlLogix with integrated motion control. You'd **** how easy it is to program now compared to the crappy file structures we used to have. If you have an input and you want to call it Mary, you name it Mary and it don't care. Sky is the limit. I can run 64 servo axis on one controller, all in perfect synchronization. Wrap hundreds of lines of ladder logic up into a add-on instruction and drop it into the program wherever it's needed and it takes up one rung. I've worked on diaper machines that had six controllers and 120 axes of servo motion and were 150 ft long. They spit out a lot of diapers in a hurry.


OK, enough BS'ing. Back to the radiator discussion.

Click to expand...

Rocket science anyway ! LOL

gzig5 said:

I learned on PLC1's in tech school. Used PLC2,PLC5, and SLC500 as well as about every other brand doing application work. Now we have ControlLogix with integrated motion control. You'd **** how easy it is to program now compared to the crappy file structures we used to have. If you have an input and you want to call it Mary, you name it Mary and it don't care. Sky is the limit. I can run 64 servo axis on one controller, all in perfect synchronization. Wrap hundreds of lines of ladder logic up into a add-on instruction and drop it into the program wherever it's needed and it takes up one rung. I've worked on diaper machines that had six controllers and 120 axes of servo motion and were 150 ft long. They spit out a lot of diapers in a hurry.


OK, enough BS'ing. Back to the radiator discussion.

Click to expand...

Interesting stuff to me. And I'm 64. But I have alittle mechanical,electronic, and computer background. (some background, some interest) LOL