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Messages - RandyRay

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TMC3in1 FAQ / Re: Plasma off, but TMC3in1 shows voltage.
« on: July 14, 2017, 10:59:12 AM »
The TMC3in1 has a very high input impedance (or low leakage), which means that once its inputs are charged up to a voltage level, it can stay there for minutes or longer.  If your plasma unit left its divided Tip Volts output charged, the TMC3in1 will continue to read that until the charge slowly leaks away, or your plasma unit is powered again and actively drives its divided Tip Volts output to a new value.  You can test the input voltage measuring functionality of the TMC3in1 at any time by going to the appropriate Troubleshooting section


TMC3in1 FAQ / Re: Touch off stuff? Please explain.
« on: July 14, 2017, 10:57:50 AM »
When you do a touch off, you then zero your Z in work coordinates, and then retract a known distance. This helps a lot with the pierce, since a large sheet of metal can vary significantly in height due to:
* Warpage (typically in thinner metals)
* Inclines (Not laying flat across your bed
* Physical damage or splatter type debris on top of the sheet of metal.

If you were always working with thick steel plate (1/2" plus) you could probably get by without a touch off. If you are working with thinner stuff (i.e. doesn't lay flat every time all the time), I would really say that you should consider getting a touch off


TMC3in1 FAQ / Re: Where are the indicated Torch Up/Down signals?
« on: July 14, 2017, 10:56:27 AM »
The main screen of the TMC3in1 Screenset shows you the commanded up and down THC velocities that correspond you your Z axis motor tuning. 

Please refer to the Vol 4 FAQ and Troubleshooting Guide under Q10 for a photo of the settings in question.


TMC3in1 FAQ / Re: Torch Up/Down LEDs flashing on Diag screen
« on: July 14, 2017, 10:54:00 AM »
The Torch Up and Torch down LEDs will flicker constantly when the TMC3in1 is alive and working.  These do not represent actual THC Up and Down commands, but rather the data controlling where the Z axis should go to. 

Please refer to the Vol 4 FAQ and Troubleshooting Guide under Q9 for a photo of the settings in question.

TMC3in1 FAQ / Re: My torch dives into the metal when I start cutting?
« on: July 14, 2017, 10:51:38 AM »
The first thing to do is make sure you check the box for Stop THC response when X-Y Velocity is less than N %.
At slow speeds, the tip voltage increases, and in order to reach the commanded tip volts, the torch will be lowered, sometimes causing a tip crash.  This is an Antidive feature to prevent the torch from diving due to slow velocities at the beginning of a cut, the end of a cut, and in corners.
The second thing to try is to increase your commanded tip volts by 5 to 20 volts higher than what the manual says.  If your tip does not crash or drag at the higher voltage setting, then there is a discrepancy between the manual and your system at these settings.  You can either remember to set higher than the manual calls for, or you can adjust your THC Offset volts to make a more permanent compensation.  You may need to go negative or positive with your compensation voltage in the THC Offset Voltage field.

Worn out consumables…
Normally you will see a decrease in cut quality when your consumables (tips) wear out.  However, if you really continue using a worn out tip, it may blow out or:
The Thermodyne manual stated that a cut height of 0.110” and a Tip Voltage of 126V was ideal.
Old Consumable: Commanded (and controlled to) Tip Volts 142V gave a height of 0.042”   
New Consumable: Commanded (and controlled to) Tip Volts 142V gave a height of 0.250”
New Consumable: Commanded (and controlled to) Tip Volts 130V gave a height of 0.115”

Please refer to the Vol 4 FAQ and Troubleshooting Guide under Q8 for photos of the settings in question.


When OFF, you will cut your metal, but not adjust the Z height via THC.  When the THC button is ON, the Z axis can be adjusted via the TMC3in1 THC Up and THC Down signals.  If your button will not turn on, it is because you are in the Demo Mode of Mach3.  You must have a licensed version of Mach3 for this button to activate and THC to operate.


NO!  Don’t use it!  It takes away control from the THC On Off button on the main screen!  That option should ONLY be used for an Oxy-Acetylene setup where the operator will manually adjust Z height while cutting.

Please refer to the Vol 4 FAQ and Troubleshooting Guide under Q6 for a photo of the settings in question.


TMC3in1 FAQ / Re: Torch pauses
« on: July 14, 2017, 10:39:55 AM »
You most likely have delay times enabled in your spindle spin up and spin down settings.   Please go into Menu -> Config -> Ports and Pins -> Spindle Setup and make sure that for your General Parameters that all of the spindle delays are set to 0, since any other value will cause a delay.
Please refer to the Vol 4 FAQ and Troubleshooting Guide under Q5 for a photo of the settings in question.


TMC3in1 FAQ / Re: Do I need to power the ESS?
« on: July 14, 2017, 10:36:35 AM »
No!  Please do not provide power to the ESS via J6!  The TMC3in1 will power the ESS through 2 pins on the expansion header.  Also do not place the jumper on the ESS’s J4 next to Port 3 when you are assembling it.  In addition, do not power the ESS through Ports 1 or 2 with a BOB.  However, you may power the BOB from the ESS/TMC3in1 if it is low current.

Once the TMC3in1 is plugged into the ESS, all power is connected to the TMC3in1. The TMC3in1 generates the correct power for the ESS.


TMC3in1 FAQ / Re: What do I need to run the TMC3in1?
« on: July 14, 2017, 10:33:56 AM »
You will need at least the following:
•   Mach3 (Mach4 support is in development)
•   TMC3in1
•   An Ethernet SmoothStepper (ESS)
•   A plasma unit
•   We also recommend a touch off

Mach3 is the current developed platform as most of our customers are still using Mach3 at the present. Mach4 is under development and will soon be available.
A TMC3in1 is available from us or one of our distributors.
An ESS (Ethernet Smooth Stepper) is a high performance external motion controller. It is a requirement for use with the TMC3in1 and is available from us, Warp9td, or one of their many distributors.
A plasma unit is required (of course)
We also recommend a torch "touch-off" whether mechanical or electronic. These are available from many distributors. The touch-off makes plasma cutting much easier and cleaner.


TMC3in1 FAQ / Re: Soemthing isn't working, HELP!
« on: July 14, 2017, 10:25:04 AM »
Read the Troubleshooting Basics section of the "Vol 4 FAQ and Troubleshooting Guide" document first.  It walks you through all of the important first steps in making sure there are no problems with the hardware or the software.
If this doesn't address your problem, return here for more guidance.


TMC3in1 FAQ / Re: How do I get started with the TMC3in1?
« on: July 14, 2017, 10:15:41 AM »
The quickest way to start setting up for using the TMC3in1 is readiing volume 01:

Hardware/Software Setup Guide

All the latest manuals can be accessed from our main web page:


The documentation for the TMC3in1 (currently 4 manuals) is located at:

It is also directly available via a link on our main web page:


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