Interlock is tripping.

[Johncook177]

My novomill with Mach 3 has developed a fault with the interlocks. I simply heard a loud clicking when running the machine, then the machine stopped and doesn’t allow me to run it again, I opened up the cabinet and the three items GIR, and GR are clicking away and GSR switch is flicking from left to right. Like the switch is tripping. I have a video of this but can’t seem to load it up so anyone wanting to hear what’s happening I can sent it over on my mobile. Any ideas what’s happening and what to check/ replace .

[Martin]

It sounds like something may be shorting out the 24Volts DC.

It may be worth disconnecting one of the wires going to the guard lock solenoid.

[Johncook177]

Which solenoid should I take a wire off? The one marked GR? And which wire.? There looks to be three items going to that . I will try anything as I really need to use this machine for an upcoming project. Thanks John

[Martin]

If you remove wire number 90 from the GIR that will disconnect the guard solenoid.

It may also be worth checking the diode fitted inside the Guardmaster switch.

[Johncook177]

Ok great. I’m going to move things around in my garage so I can get to things a bit easier. So just to be clear because I’m no expert on anything electrical. I’m going to find wire 90 and take it out of the terminal. Will I be able to just isolate the guard master switch as I don’t use the guard master . It doesn’t have the perspex cover so the male guardmaster key has always just in the guard master interlock on the side of the machine.

[Martin]

Yes if it is the coil causing the issue.

It could also be the zero speed output from the spindle drive.

Se how you get on.

[Johncook177]

Ok so I took thenumber90 wire off and it didn’t fix it. I uploaded a video on YouTube of what’s happening inside the cabinet if it helps. https://youtu.be/mdeijccjO91

[Johncook177]

May need to cut and paste in your browser to see the video as the forum may stop links

[Johncook177]

OK i have a different pc . This should take you to my little video showing the switches going mad. Any ideas ????.

https://youtu.be/mdeijccjO9I?si=ZFI10WJOxoKLI6PS

[Martin]

It does look like the 24volts DC is being shorted out by something.

With it being updated to Nach 3 I am not sure where to suggest to proceed.

Did you upgrade the machine yourself?

[Johncook177]

I took the machine to a guy in melton mowbury that converts denfords . I can’t seem to get hold of him otherwise I would drive it up there. He seems a good guy and is still advertising on eBay but doesn’t answer his phone or emails? It worked really well for over a year then just tripped out one day , very frustrating. When I hit the emergency stop button a couple of the solenoids stop tripping so maybe it’s the emergency stop button shorting out. Can I purchase a new switch just to start eliminating things. I need to feel I’m doing something

[Martin]

It would be unusual for the E-Stop switch to short out.

Do you have a electrical meter you can use to test the 24Volts DC supply & see if it is being dragged down?

[Johncook177]

Unfortunately I have no clue when it comes to electrics. None at all. I don’t have a meter and wouldn’t know where to plug it in . Is there anywhere in the uk Ivan drive the panel too?

[Martin]

Where are you located?

[Johncook177]

Hornchurch. Essex

[Martin]

Yes that's a distance from us.

[Johncook177]

Where are you I don’t mind a drive ?

[Martin]

We are in Brighouse, HD6 1QF

We would not be able to test it with it being converted to Mach 3.