Search found 126 matches

by DavidB
Sat 08 May , 2021 23:22 pm
Forum: Micromill / Microturn
Topic: Puling 12v/5v off Micromill/Microturn
Replies: 2
Views: 67

Re: Puling 12v/5v off Micromill/Microturn

Depending on the board these may help as I posted them earlier on another thread Nextmove ST http://www.abbmotion.com/support/supportme/Documents/Manuals/MN1929_01-10.pdf and the other Baldor board used Smartstep https://www.baldor.com/Shared/manuals/1251-396.pdf . Both give the current rating for t...
by DavidB
Sat 08 May , 2021 20:57 pm
Forum: NovaTurn
Topic: help please
Replies: 10
Views: 225

Re: help please

Worth checking first for any deposits around the battery on the Nextmove board as they are prone to leak electrolyte after many years which may effect the comms. If there are deposits they need to be removed with distilled or deionised water and dried. In many of the Denford installations the batter...
by DavidB
Fri 07 May , 2021 20:20 pm
Forum: NovaTurn
Topic: help please
Replies: 10
Views: 225

Re: help please

As no one else has responded yet I thought I would ask if this is a system you have had running in the past and has now stopped working or if you're trying to get it working for the first time. This thread http://www.denfordata.com/bb/viewtopic.php?f=54&t=3167 mentions 'L' likely being a issue with ...
by DavidB
Fri 26 Mar , 2021 15:42 pm
Forum: Micromill / Microturn
Topic: Eprom Upgrade?
Replies: 4
Views: 406

Re: Eprom Upgrade?

If you have access to something that'll read the EPROM then it could be a good precaution to do so and save it as a back-up as they don't last forever. IIRC when I've looked at some of the data sheets for the EPROMs I was using 10 years was a typical minimum life quoted, they normally go on far long...
by DavidB
Tue 16 Mar , 2021 20:39 pm
Forum: Novamill
Topic: Novamill communication issue
Replies: 10
Views: 669

Re: Novamill communication issue

Is there a battery below the LED, it looks like there might be but the image doesn't have enough detail to be sure. Worth checking for any appearance of deposits on the PCB around the battery as they often leak electrolyte after a time and it typically effects the comms signals. Can you find one of ...
by DavidB
Thu 11 Mar , 2021 21:32 pm
Forum: Novamill
Topic: Novamill communication issue
Replies: 10
Views: 669

Re: Novamill communication issue

One thing that can cause comms issues with some software, I don't know if it effects Denford software, is the latency setting in the FTDI driver, it's likely in the advanced settings dialog on the driver page you posted earlier. I think in order to use the USB efficiently it waits in case more chara...
by DavidB
Wed 10 Mar , 2021 22:59 pm
Forum: Novamill
Topic: Hot Spindle Bearings
Replies: 5
Views: 390

Re: Hot Spindle Bearings

As no one else has replied yet do you have any information from Denford about how to set-up the bearings when replaced and what level of heating is to be expected. From looking at the Novamill assembly drawings the heating could be the result of doing the lock nut up too tight which holds the pulley...
by DavidB
Wed 17 Feb , 2021 16:31 pm
Forum: MicroRouter
Topic: Microrouter spindle board
Replies: 8
Views: 706

Re: Microrouter v5 spindle board

This should give you an idea of how the original control card handles things http://www.denfordata.com/bb/viewtopic. ... 003#p11296 .
by DavidB
Wed 17 Feb , 2021 0:28 am
Forum: MicroRouter
Topic: Microrouter spindle board
Replies: 8
Views: 706

Re: Microrouter v5 spindle board

I don't know what BOB you're using but the way you're suggesting connecting out1 and out2 on the BOB suggests to me that you don't fully understand the interfacing of the BOB to the Denford hardware. Luckily there's a lot of information already here on the Denford BB covering the subject, a search f...
by DavidB
Mon 15 Feb , 2021 23:50 pm
Forum: MicroRouter
Topic: Microrouter spindle board
Replies: 8
Views: 706

Re: Microrouter v5 spindle board

Typical to many Denford products the SGR and other relays are tied to 24V. They're energised by pulling the other end of the relay coil to ground often with something like a ULN2803 driver chip on the main control board. My Triac is like that, I don't know if it has a timer as it's a conversion work...
by DavidB
Mon 15 Feb , 2021 23:14 pm
Forum: MicroRouter
Topic: Microrouter spindle board
Replies: 8
Views: 706

Re: Microrouter v5 spindle board

IIRC P1 is the 0-10V 0V reference, P2 the 0-10V speed signal input, P3 the 10V reference so you can connect a suitable pot across P1 and P3 and take the wiper signal to P2 if required. The main thing to know is that 0-10V signals are referenced to the motor supply voltage and should not be connected...
by DavidB
Thu 04 Feb , 2021 1:14 am
Forum: MicroRouter Compact
Topic: Cutting Accuracy
Replies: 12
Views: 1414

Re: Cutting Accuracy

Brian, That's a great result, hopefully you get a decent discount for buying most of the UK stock. I had originally thought of suggesting 3D printing the inserts in Igus filament as you can buy it from their site but I don't know if you have a 3D printer. It's something I've had in mind to try for a...
by DavidB
Tue 02 Feb , 2021 16:50 pm
Forum: MicroRouter Compact
Topic: Cutting Accuracy
Replies: 12
Views: 1414

Re: Cutting Accuracy

Brian,

Have you looked for carriage equivalents elsewhere. I just saw this range at Igus and it looks similar https://www.igus.co.uk/product/930 . The Igus material may be more suitable than nylon which can be annoying to machine.
by DavidB
Sat 23 Jan , 2021 2:44 am
Forum: StarMill
Topic: Reverse spindle
Replies: 2
Views: 496

Re: Reverse spindle

Manny, A common implementation would use pin 16 as the spindle reverse but due to the limited IO it seems to have been used for the tool changer. It might be the person that converted it wondered how useful spindle reverse is and left it out in favour of the tool changer. I use reverse spindle direc...
by DavidB
Mon 18 Jan , 2021 13:20 pm
Forum: StarMill
Topic: Fenner Drive wiring for mach3
Replies: 5
Views: 567

Re: Fenner Drive wiring for mach3

There's some details of a Fenner card here http://www.denfordata.com/bb/viewtopic. ... 645&p=5510 showing where to connect a 5k pot, do the details match your card. Searching for 522A3700 turned up questions but no answers.
by DavidB
Sat 16 Jan , 2021 1:07 am
Forum: StarMill
Topic: Fenner Drive wiring for mach3
Replies: 5
Views: 567

Re: Fenner Drive wiring for mach3

The question about whether a pot could be used to test the 0-10V input and speed control functionality came up recently but IIRC for a Sprint board, the technical data indicated it could be done that way and the board provided the 0V and 10V references to do so. Do you have the technical data for th...
by DavidB
Fri 15 Jan , 2021 20:48 pm
Forum: StarMill
Topic: Fenner Drive wiring for mach3
Replies: 5
Views: 567

Re: Fenner Drive wiring for mach3

From what you describe you're using a 0-10V signal to drive an optoisolator which isn't going to work. IIRC Mach3 and typical BOBs use pin 14 to provide a PWM signal through an optoisolator to circuitry that converts the PWM to a 0-10V signal which is what you need so it's isolated from ground as II...
by DavidB
Mon 11 Jan , 2021 18:14 pm
Forum: StarTurn
Topic: ATC (auto tool change) Gearbox info
Replies: 7
Views: 7337

Re: ATC (auto tool change) Gearbox info

I'd be interested in any electrical and mechanical changes with regards the Orac ATC. I'm not going to apply any mechanical changes to mine any time soon as I've already stripped and rebuilt it with new bearings, they seemed OK but as it was apart they were cheap enough so changed them. The pawl was...
by DavidB
Mon 11 Jan , 2021 18:03 pm
Forum: StarMill
Topic: Custom card and Fog buster question
Replies: 21
Views: 2025

Re: Custom card and Fog buster question

On the Triac pins 41 and 42 of the 50 way connector on the motherboard are connected to +5V, the board looks like yours so with the 50 way IDC cable removed as is the case with yours the 5V won't get to the connection block.
by DavidB
Fri 08 Jan , 2021 23:38 pm
Forum: StarMill
Topic: Custom card and Fog buster question
Replies: 21
Views: 2025

Re: Custom card and Fog buster question

Manny, I didn't mention 69, connection 79 is connected to ground when the SGR is powered and not when unpowered. 61 is connected to +24V. Good you've got the extra IO so I expect you can run everything. Which BOB is that? OK I checked the wiring diagram PDF and it does show that 69 is connected to +...