Fuse T6.3AL 250V

ar2noo · Post by **ar2noo** » Wed 19 Aug , 2009 13:31 pm

Where can i find this type of fuse? urgently needed.. Microrouter v3

Steve · Post by **Steve** » Wed 19 Aug , 2009 14:38 pm

Where are you located?

The T donates semi delay (or slow blow)

Its a 6.3A 20mm glass body fuse.

In the UK you can get from FEC or RS and probably any other Electrical wholsaler.

RS have multiple types but here is a link to one

https://uk.rs-online.com/web/search/sear ... &R=5413530

If in the US I know you can get them at Radio Shack

https://www.radioshack.com/product/index ... Id=2102764

ar2noo · Post by **ar2noo** » Wed 19 Aug , 2009 14:50 pm

My place is in Brunei Darussalam. Asia region. Thanks for the link. Really appreciated..

ar2noo · Post by **ar2noo** » Wed 19 Aug , 2009 23:37 pm

Oh no both links are unable to post to my country. So where else I can get this fuse? Unable to run this machine for awhile then. Hard for my students to finish their projects then.

ar2noo · Post by **ar2noo** » Thu 20 Aug , 2009 3:14 am

I just got the same fuse and I fix it to the original location. But as soon as I turn the power on, suddenly it blown again. What is actually the problem with this microrouter? anyone please..

bradders · Post by **bradders** » Thu 20 Aug , 2009 7:48 am

We need more information, There are numerous fuses on our machines, can you give me a fuse number ? usually they will be marked up F1, F2 , F3 etc. Check out the PDF attached is may help you identify the the fuse

Martin · Post by **Martin** » Thu 20 Aug , 2009 8:22 am

Is it the Spindle drive fuse?

Check the motor brushes.

Steve · Post by **Steve** » Thu 20 Aug , 2009 12:43 pm

We need to know the fuse that is blowing.

Does it blow as soon as you turn on or when you try to start the spindle.

Try plugging the spindle motor directly to the mains and see if it works then..

Let us know.

Steve

ar2noo · Post by **ar2noo** » Fri 21 Aug , 2009 7:45 am

i think it is fuse no. 1, it is located on the top most of the black box. First thing what i did is i unplug the big main power that connected to the microrouter with the fuse 6.0A. Then turned on the power, the fuse looked ok at first, then i turned it off and was connecting the power to cnc machine which then fuse blown. I think it must be spindle. but i have no experience to fix spindle. Btw i did not connect spindle motor during this test.

bradders · Post by **bradders** » Fri 21 Aug , 2009 8:05 am

Have you done what Martin and Steve suggested ?

You should power up the Microrouter at first with everything connected, take a picture of the fuse in the electrical cabinet which has blown and post it with your reply on the forum so we can identify it.

Does the router spindle motor have a RED Slider (Motor 3102) on/off switch or a SILVER on/off toggle switch (Motor 86902) ?

1. If the Spindle motor has cut a lot of material, try using an air line to blow the dust out of the inside of it
2. Plug the spindle motor directly into a mains supply and see if it runs OK ( Check the voltage as i think we have fitted 240v and 110v motors at various times)
3. Check the carbon brushes, if these are worn then they need replacing

Router motor (Motor 86902) spindle brushes Pt No BI00307NB

Router motor (Motor 3102) spindle brushes Pt No BI02501AB

ar2noo · Post by **ar2noo** » Fri 21 Aug , 2009 8:15 am

I haven't checked carbon brushes yet, but during the tested i unplug the porter cable. It is silver in colour.

bradders · Post by **bradders** » Fri 21 Aug , 2009 8:21 am

Are you saying that the motor was unplugged from the Microrouter electrically and the fuse still blew ?

Check that the fuse on the Spindle Drive Board is still OK

Usually the positive charged carbon brush wears faster than the Negative, so you could swap them over to get a bit more life. The brushes when new are abot 15mm long

ar2noo · Post by **ar2noo** » Fri 21 Aug , 2009 8:30 am

bradders wrote:Are you saying that the motor was unplugged from the Microrouter electrically and the fuse still blew ?
Yes unplugged.

Check that the fuse on the Spindle Drive Board is still OK
Which one is that? Is it the long black fuse?

Usually the positive charged carbon brush wears faster than the Negative, so you could swap them over to get a bit more life. The brushes when new are abot 15mm long
i will check the carbon brushes later and let you know about it. Thanks

Martin · Post by **Martin** » Fri 21 Aug , 2009 10:46 am

Is it Fuse F1 on the Denstep control card? (above the orange connector plug & mounted on the PCB)

If it is then inspect the transistors monted on the heatsink for damage. You sometimes see a hole or crack in one if has blown. Fuse F1 on the Denstep is the Axis Drive Fuse & should be a 6.3 amp fuse.

Steve · Post by **Steve** » Fri 21 Aug , 2009 11:54 am

It sounds like the problem is not with the spindle.

Unless the fuse blows as you try to start the spindle this is not the problem.

I think you are saying the fuse blows just by powering on the machine.

Martin has suggested that if the fuse on the Control card is the one that is blowing the problem could be with one of the stepper motor drive chips.

Please send a photo of the Electrical cabinet and identify the fuse that is blowing.

Press in the E-stop button and power on the unit.

The 7 segment display should light on the Baldor control card. The fuse should not blow.

Then release the E-Stop, this should apply power to the axes drives if one of the drives is at fault the fuse would blow at this point.

ar2noo · Post by **ar2noo** » Sat 22 Aug , 2009 2:06 am

Martin wrote:Is it Fuse F1 on the Denstep control card? (above the orange connector plug & mounted on the PCB)
yes martin, you are right. It is fuse above the orange connector.

If it is then inspect the transistors monted on the heatsink for damage. You sometimes see a hole or crack in one if has blown. Fuse F1 on the Denstep is the Axis Drive Fuse & should be a 6.3 amp fuse.

where is the heatsink located? sorry I really confuse seeing this pcb board.

ar2noo · Post by **ar2noo** » Sat 22 Aug , 2009 13:54 pm

ok guys i will upload the picrure later..

ar2noo · Post by **ar2noo** » Mon 24 Aug , 2009 0:55 am

Here is the pictures. The fuse is located on the red circle.

ar2noo · Post by **ar2noo** » Mon 24 Aug , 2009 1:03 am

I checked the brushes and it looks fine and still 15mm. and I not sure about E-stop and the heatsink..

ar2noo · Post by **ar2noo** » Mon 24 Aug , 2009 4:48 am

Steve wrote:It sounds like the problem is not with the spindle.

Unless the fuse blows as you try to start the spindle this is not the problem.

I think you are saying the fuse blows just by powering on the machine.

Martin has suggested that if the fuse on the Control card is the one that is blowing the problem could be with one of the stepper motor drive chips.

Please send a photo of the Electrical cabinet and identify the fuse that is blowing.

Press in the E-stop button and power on the unit.

The 7 segment display should light on the Baldor control card. The fuse should not blow.

Then release the E-Stop, this should apply power to the axes drives if one of the drives is at fault the fuse would blow at this point.

Steve, what you are saying is correct.. the fuse blow just after release E-stop button. Then what else I need to do?

Denford Software & Machines

Denford Software & Machines

Fuse T6.3AL 250V

Fuse T6.3AL 250V

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