York YT

[ascj]

I have a York YT C3 C3 B2-CGDTMS that I'm looking for a IOM for. York said they had nothing.

Also was looking for any info on the York Turbo Modulator that's attached to this antique. I'm having it lock out on over current after 5 minutes of run.

[klove]

What type control panel and what model TM do you have?

[ascj]

What type control panel and what model TM do you have?

I couldn't find any numbers on the TM. But I can sure describe it. 6' x 6' cabinet with two doors. Right side is the actual VFD with all the caps and transformers. There is a digital readout for hz, analog for volts, and analog for amps. Left side house the main gear. Current sensing with boards on the three legs. There is also 6 boards. The one that lights up the overcurrent......you have to try to find a level and line up the lights with the plexi.:eek2:

The control panel has the old single line display.....where you have to hold the buttons in to read the buttons display.

I'm not familiar with these old machines(1976).......they always send the veteran out to work on them. So today.....I told them to let me go out and see what I can do.

The machine is on it's last leg. We are just trying to make through the summer. The building will be demolished around spring. New school is being built as we speak.

So I find the thing surging. I had to manually purge the unit.....since the purge system is shot. I have it running and it shuts down on overcurrent. I checked amperage, phase imbalance, temps, and all. They all are good. I even compared them to some old log sheets.....when they use to do them.:LOL: I tried holding it back at 40 and 60%.......still every 5 minutes....over current lock.

[klove]

There's nothing on pdf for either of what you have unless you can find someone with a scanned copy. The controls are the keyed micropanel (hit display hold before pushing the button you want to read and it'll stay up for 10 minutes no matter what reading you go to), and the TM II. Did you read the current on the micropanel, the analog meters on the front of the TM, or did you hang a meter on it? Need to put a meter on all 3 phases to see what's going on and then move from there.

If you have an electronics problem of any reasonable size at all inside the TM, I can tell you that you'll be better off to go ahead and make a crappie bed out of that one than try to fix it. If that's the case but you have to have the machine running, you can gut the TM and install a solid state starter. There will have to be some modifications made, but it can be done. But I'm getting ahead of myself......

[ascj]

There's nothing on pdf for either of what you have unless you can find someone with a scanned copy. The controls are the keyed micropanel (hit display hold before pushing the button you want to read and it'll stay up for 10 minutes no matter what reading you go to), and the TM II. Did you read the current on the micropanel, the analog meters on the front of the TM, or did you hang a meter on it? Need to put a meter on all 3 phases to see what's going on and then move from there.

If you have an electronics problem of any reasonable size at all inside the TM, I can tell you that you'll be better off to go ahead and make a crappie bed out of that one than try to fix it. If that's the case but you have to have the machine running, you can gut the TM and install a solid state starter. There will have to be some modifications made, but it can be done. But I'm getting ahead of myself......

I did check the amperage and volts myself in the panel to check imbalance......I was shocked that the analog's reading where still accurate.

Thanks for the tip with the controller. I'm actually going out there tomorrow with the veteran. He thinks I'm over looking something. I think there is a issue with the drive.

One question I have is.....does that drive have the ability to compare current to drive command. Meaning does is it looking for a certain current with a 40% call or is it just concerned with over all current? I'm guessing the later.

BTW-Thanks again.

[heavymetaldad]

if it means anything, I 'm sure i have some old turbo mod lite on paper

[klove]

% motor current is a percentage reading of motor FLA. % should match whatever current the motor is pulling, +/- a little bit. Overcurrent trip is triggered when you are above 30 hz and any phase on the output of the drive is at 105% fla or more for 7 seconds continuous. All info given assumes that no one has arbitrarily screwed around with the settings of the potentiometers which would cause the machine to be lied to by it's own controls, thus causing all sorts of messed up things to take place.

[ascj]

Update.....So I finally get back over there this morning with the veteran tech. We check out a few things before firing her up. After about 1 minute of running, he walks over to the TM panel and says there's the problem. WTH......there are fans under the circuit boards that are on each leg. I couldn't even see them......without getting on all 4's and looking under the baffle plate. The one on the middle leg wasn't running. So we spent an hour trying to find a replacement......no luck. So we just cleaned and oiled it up and crossed our fingers. It ran all day.....I swung by on my way home.

It just goes to show.......experience means alot.

But the best thing about today was spending a good hour playing questions and answers with him. I don't get to work with him often.