70 & 71 should be 24 volts DC

00001100 is showing as a E-Stop. "0"


bit 4 is the 5th from the right.

Does it change to a 1 when you press in & hold the "Axis Limit Switch Overide Button"???

The Electrical Cabinet (main box) is on the back of the machine.
The floor standing box is called the "Transformer Box"

What happened with the power on wire 31 in the transformer box?

Ther should be 110 Volts AC between wires 30 & 31.

Is this the transformer/power supply you have replaced?

Is the 24 Volts DC present in the main electrical box on wires 70(0v) & 71(24v)?

Is the E-Stop line ok.

Is diagnostic 21 bit 4 showing as a 1? (E-Stop Monitor, 1 = active: 0 = fault).

According to the record sheet the machine is fitted with a NextStep non USB card. It may be worth downloading the latest "Denford Machine Firmware EasyUpgrader " from the Denford website & try to connect to the card. Also make sure that the Green LED on the card is lit. If the problem persists you c...

Hi there. It sounds more like a PC fault. it may be worh removing some of the cards in the PC & cleaning the contacts before re-inserting.There is no feedback from the X & Z axis motors so it`s unlikely for that to be causing the comms error. It`s exactly what it say`s. A communication problem betwe...

Hi, There will be a "Axis Limit Switch Overide" button on the right hand side of the control panel housing. If you press & hold in the button it will overide the Axis Limit Switches & allow you to drive the axis clear using the control. I sugest you move slides to the centre & then release the button.

Don`t forget to check the beam window.(it`s in the back left hand corner) Check the optics in a good light.

What`s the software version you are using to control the vls laser.

If you open the back door to the electrics the card the bottom card on the left hand side has 2 red led`s that stand just behind the terminal block towards the centre. If you power the machine up & manually turn the spindle they should turn on/off. If you rotate the spindle to where it picks up it`s...

Do both of the LED`s on the control card work correctly. When you say it drops out what does it do? How do you recover it?

The auto z only raises the bed or drops the bed to where it thinks the focus point should be. It is best to home the Z axis each time you power up the laser cutter. The VLS 2.3/3.5 model needs to be told to home manually. It may be worth installing the fume extraction alarms in which is a option to ...

I meant the feedrate overide pot. Try running at less that 100%. The X axis drive card is the on the left towards the Euro card & the Z is on the right. The slides & stepper motors interact quite strangely. If the slide is too loose or tight then the stepper motor can stall or miss moves. I find tha...

It looks as if the axis is stalling. If it`s mounted in the same orientation as youre photo then it must be the Y axis. You will need to check for backlash & movement with a DTI. The normal way to cure it stalling is to tighten up the Gib strip slightly to allow for wear. It may be easier to drop th...

1. What is the feedrate overide set to? Try running at 100% or less.

2. It may be that the slides are slack. Try adjusting the gib strips.

3. What version of Eprom is fitted to the euro card? Should be ver 2.1.

Update to the latest version 2 software. VRMillining Ver 2.31


You can download it from the Denford website.

The "Keyboard disconected" mesage is displayed because the computer thinks that the qwerty keyboard is not plugged in. You can try the keyboard in the socket on the breakout board on the rack. under normal useage the keyboard is not requiered but if you need to re set the computer bios then it is. S...

The "L" on the seven segment LED display is correct. When the software is up & running it should read as a "8" with the E-stop button. This means the control is powered up & initalised. The monitor is a standard SVGA monitor so you can easily unplug the 15 way heigh density plug from the computer br...

I guess that you need to look at the Mains voltage coming in to the machine & work from there. Is it possible that the input voltage is low. Without looking at the electrical drawings it does sound strange that the transformer iw wired accross the 20 & 420 tappings. From memmory the control transfor...