The Home Switch for the Z axis maybe faulty or the switch is loose from its mount. The contacts are not opening properly and the stepper motor is stalling against a physical stop (the grinding noise). The home switches are NC (Normally Closed). The machine homes by moving to the switch. When the mac...

Microrouter Compact S/N u00413-6 Dec. 2003 VR Milling v2.22 When the Z axis is homed, it moves to the limit switch but makes a loud grinding sound instead of stopping and the only way to stop it is to hit the escape key or open the guard. After this, the machine will not jog correctly. it only moves...

Compact 1000 When the E-Stop button is pressed and released, the “Emergency Stop” status stays on in the Control Panel. Machine status does not return to “Ready”. Pressed and released the E-Stop button several times, turned off the machine and re-booted the computer, "Emergency Stop" Status still sh...

fixed the ground was being lost at the outlet - I replaced the outlet and attached an additional ground line to help. interesting to note that if the ground is not making proper contact that the table can get 117 v potential-- could this be because the transformer is not using a center tap ground???...

The ground wire goes from the wall outlet to the Transformer box ground connection, to the Control Box ground connection, through the 40-pin umbilical, to the machine cabinet ground connection. The ground wire is usually a green/yellow striped wire that is connected to the cabinets(s). You may need ...

Thank you. I have these schematics, I was needing something that deals with the 'step up' transformer, ground, earth ground, and how these continue to the machine. For example, does the "ground" from the wall oulet continue (as the same)..to the "ground" that is inside the Nova Mill and/or the contr...

Here is the link to the Denford Forum with the Novamill Wiring diagrams.

viewtopic.php?t=1834

I have a customer whose students are getting shocked by touching the table that a Nova Mill is sitting on. I am curious as to how the AC neutral and the Ground get to / through the transformer and how the grounding should be connected to the machine. I don't have any diagrams to assist me in helping...

CNC Tutor is a discontinued product. You will need to upgrade to VR Turning control software and you may need to upgrade the EPROM on the control card from DOS to Windows. The DOS EPROM is labeled "esMINT v1.6" The Windows EPROM is labeled "denMINT v2.0" Contact your educational reseller for pricing...

Novaturn S/N eo4733 March 1996 Elect. S/N oc00120136 SmartStep 3 Problem: The spindle speed does not stay a steady rpm, it keeps varying wildly from 400rpm up to 2000 and down to low rpm and back up, rapid changes. It is worse when using the G96 (constant surface speed control) code. Is the Encoder ...

Have you tried running a project file that worked before you have had this problem? Are there any "Details" listed in the "Exceeds Limits Error"? Is the cutting tool set to high in the collet? In the JOG Mode, are you able to lower the "Z" axis far enough so that the cutting tool will touch the piec...

You can check the selected offsets by using the MDI (Manual Data Input) tab.

Click on the MDI tab and in the "White Box" type in
x0y0 (zeros) <enter>
z0
See attached jpg.

Then click on the Triangle "Start" button. The machine will move to Work Piece Offset that is "Active".

What version of VR Milling are you using? Click on the "Help" tab and select "About". The version will be listed. Check or re-set the "Work Piece Offsets". In VR Milling version 2, make sure there is a Red check mark in front of the "Active" offset. Attached is a Tech Article on setting the Offsets ...

MicroMill 2000 S/N 56487 November 2001 Description of problem: I stopped the machine to oil it recently, and ever since then, each time I start to cut something I get a message that says: “Machine Error: Exceeding Limits.” I have tried changing cutting bits, made new designs, etc. and nothing seems ...

Customer writes in: CNC Tutor for Windows Turning v1.75b Windows XP CNC Lathe The error message that I receive when I try to install the Mint Manager is "Comm Not OK". I have checked all of my connections to make sure they are connected. I have followed the directions from the manual for the Comm se...

There maybe two problems with your machine. 1 - The home switch is faulty. Replace it. 2 - The new connector looks like it is touching the terminal next to it (4). Use a connector with a plastic housing or slip a piece of heat shrink tubing over the connector to keep it from touching the terminal (4...

Customer writes in:

When we try to home the Micromill, the "Y" axis moves all the way to the back, away from the home switch. The wire broke away from the connector on the home switch, we installed a new push-on connector, but the "Y" axis still does not home.
Attached are photos.

You have an older version of VR Milling. A file may have been corrupted. Make sure you have your Registration Disk that came with VR Milling. Go to the Denford website and download the "VR Milling v2.31 CD" software http://www.website.denford.ltd.uk/support/88-downloads-cat/99-software-downloads Sav...

Novamill
VR Milling v2.22

Customer has a problem when trying to set the offsets.
The offsets do not keep when the program is closed and reopened.

Customer has a Boxford MT 2 Lathe with Y axis and a 190 VMC Verticle Mill.
Will Denford VR Milling and/or VR Turning software operate the Boxford machines?