XMT Blog for no pre-weld amp display calibration
This page is designed for the new user jumping on an xmt. While a calibration can normally be done without much knowledge on the subject., xmt’s require a little thinking. the main two reasons for this is half the xmt provide no pre weld display. and, some xmts disregard what you set the main dial at and use the full amps.on remote mode
So what does this mean for you the user and calibrating. well, it means you will need to follow my steps on this page. So let’s begin. For this example, we will assume the max amps on your XMT are 450.
From experience, you will only be able to weld on the stick setting in electrode hot. There is a small chance that your wireless remote will work and show pre weld display in the white portion where it says CC and has a foot pedal. If so, great go to normal calibrate. If not, well hunker down, here we go.
To keep it simple, put your machine in the white portion stick setting, set your main dial to max.
Then, thread on your receiver, magnet the receiver somewhere nearby. If your new to it, hopefully you charged it the night before.
Turn on your hand remote, then shortly after (less than ten seconds) turn on your receiver. done right, when your receiver turns on, your hand remote will tell you the battery percentage of the receiver.
At this point, just move your hand remote dial to confirm the numbers on the hand remote change to confirm proper wireless remote operation.
Now is the moment you realize the numbers on the miller aren’t changing. You can thank Miller for that. They still do it to this day on new pipeworx units.
What i would suggest is burning a practice rod on plate and adjust the hand remote while doing it to confirm hand remote operation. Once your eyes see the amps adjust, you will get past the shitty deal that the machine doesn’t show pre weld amps.
At this point, go to your main dial and see what the minimum is and what the maximum is. say 10 and 450. don’t worry too much about the bottom number as i pre crank my receivers for milller so the number for calibration will likely be around 30-43 <- trust me. however the top number is a good one to find out.
now you will perform an initial calibration, can be seen here -> calibrate <-
Now back to the machine and see how accurate it is. strike up a known value and rod and find out if its too hot or too cold. Now your diving into xmt calibration.
read the stories below
If you message me, i will ask you a) the machine max b) your min and max calibration c) what you set your hand remote at d) how many amps did it feel hotter or colder than the set number. <— then with my knowledge on the matter, i can tell you a new calibration to enter from my experience.
XMT STORY #1
All xmts are different. this is an account of one accurate calibration on a xmt with a max output of 600 amps.
Our first step, step #1, was to put it in stick on the electrode hot side as displayed in the pic. Next step, step #2, was to select remote toggle on the machine as displayed in the pic
step #3, we needed to figure out whether the main machine dial determines max amps or if its bypassed. To do this, we calibrated to 425 max on the hand remote. then we set the machine dial to 425 out of a possible 600. We struck a 1/8 7018 rod at 130 on the hand remote. It displayed 190 amps on the machine while welding. What this told us is the machine ignored the 425 and selected the machine max. The answer to step #3 is the max calibrate is the machine max in that mode.
Step #4 is to calibrate the hand remote to the machine max. we also calibrated the hand remote to the machine min which happened to be zero. Set to 130, struck a rod and the machine display 160 amps. When the machine amps are more than the hand remote amps, the bottom calibration is off. In this case, the true bottom was 43 amps, which is a popular number for my remotes on millers. he calibrated 43 for minimum and the machine max for calibrate max. Struck yet another rod and was within five amps
From that point on, minor adjustments on the calibration numbers can dial it in within a couple amps considering the machine has dig and fluctuates.
XMT STORY #3
This xmt (425) has no switch saying panel and remote. no worries, it autodetect based on the receiver grounding pin C to D. He used the tig lift arc mode. He set his xmt to 250 amps max the machine. Calibrated his hand remote to 20 and 250. And, it was 100 amps hot. So, thinking outside the box was necessary. He calibrated the remote 20 and 425 amps. Maxed out the machine. Did a test run at 80 and 79 amps came up. next, turned his remote all the way down to 20 amps, struck on scrap iron and 29 amps on the machine showed. So, he recalibrated 29 and 425 on the hand remote