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Author Topic: new WM BMS250MU, won't operate (my issue solved, others still have problems)  (Read 4881 times)

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Offline jimbarry

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #120 on: May 18, 2022, 05:16:12 AM »
@jimbarry that's great news! Just out of curiosity was the machine half working in that video with or without the jumpers?
Jumpers in a Sobanski board by that time.

Offline jimbarry

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #121 on: May 18, 2022, 05:34:24 AM »
Looks like mine, yes, green and  red switch buttons.
Right, that's the older design. Our BMS250MU from 2018 looks like that. The newer ones from 2021 onward will look like this one in the video. About the same functions but the POT1 switch (blade advancer rotatory dial) behaves a lot different. It's rotary dial is smaller, a lot more effort required to turn it and the speed is greatly reduced. On the older model if you accidentally happened to brush the cuff of your shirt or coat on that dial and sent it rotating too fast, well, it was not a good thing to do. On the old model, the quickest I would set the blade advancer was about 2.5. I always wondered why it had speed faster than 3. So this part of the redesign I see as an improvement. On the new machine, the blade advancer at full speed is only about the rate of 2.5 or so from the older model.  The motor for the blade advancer may have some additional torque upon initial observation. It seemed last evening that on slower motion the blade advancer was more capable of pushing the blade through. Down side is it makes a higher pitch whining noise at about the midway speeds. Doesn't affect me much because the tinnitus in my ears is  a symphony of fire alarms.  

Offline jimbarry

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #122 on: May 18, 2022, 05:49:33 AM »
Now, it's time to hone in @Crossroads machine problem. 

That 5A glass fuse in the F3 position, on our older BMS250MU I had to replace the regular fuse that was filled with silicia sand. That stopped the fuse from constantly blowing. The new machine has the regular glass 5A fuse, we'll see how long that lasts.

If you have a blade in the machine, take it out. Then try to start up the machine. If it all works, then it's the magnetic shut off that needs to be adjusted because when a blade is in place, the sensor is too close to the blade causing it to turn off the machine. 



 

Also, if a blade is installed, a bend in the blade that brings it closer to the sensor or if the right side blade guide well is not in its proper position, will also trigger the sensor to shut things off.



 


What is the brand name of the circuit board on your machine @Crossroads ?

Offline MattM

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #123 on: May 18, 2022, 07:40:20 AM »
@Crossroads  somehow I missed the posts where you said that you were having issues with your machine. I have a pretty busy day today but later tonight I'll try to give it some thought. That's it you don't have it figured out already  :)

Offline YellowHammer

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #124 on: May 18, 2022, 07:50:43 AM »
The sensor in mine has a little LED on it to indicate it is working.  Does yours not have that?  When you get a chance I'd like to know what was the final answer?

Missing or Not Jumpers?
Wrong fuse?
Adjust Sensor?
Else?

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Offline Southside

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #125 on: May 18, 2022, 07:54:32 AM »
On my machine that sensor will not stop the band advance and I need to keep the second relay manually in the trip position or nothing will work.  WM chalked it up to "something in those relays" that they can't get any longer.  Sure would like to figure out what the fix is.  
Franklin buncher and skidder
JD Processor
Woodmizer LT Super 70 and LT35 sawmill, KD250 kiln, BMS 250 sharpener and setter
Riehl Edger
Woodmaster 725 and 4000 planner and moulder
Enough cows to ensure there is no spare time.
White Oak Meadows

Offline newhollandnut

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #126 on: May 18, 2022, 08:24:49 AM »
Great information! This may lead to some answers for me. I will do some tests this afternoon and report back. I will also get some pictures of my circuit board and provide those. I'm still not sure what the sensor would have to do with the fuse blowing all the time. 

Offline jimbarry

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #127 on: May 18, 2022, 09:08:08 AM »
The sensor in mine has a little LED on it to indicate it is working.  Does yours not have that?  When you get a chance I'd like to know what was the final answer?
Missing or Not Jumpers?
Wrong fuse?
Adjust Sensor?
Else?
For the 2021 model I have, it was the missing jumpers and the shut-off sensor being set too close. And yes, there is a LED that lights up in behind the shut off sensor. For the 2018 model it was the 5A fuse in the F3 position that I changed to a silica sand fuse.

On my machine that sensor will not stop the band advance and I need to keep the second relay manually in the trip position or nothing will work.  WM chalked it up to "something in those relays" that they can't get any longer.  Sure would like to figure out what the fix is.  
Have you checked the shut-off sensor is not set too far back?

Great information! This may lead to some answers for me. I will do some tests this afternoon and report back. I will also get some pictures of my circuit board and provide those. I'm still not sure what the sensor would have to do with the fuse blowing all the time.
The shut off sensor issue and F3 fuse blowing issue might be unrelated.

Offline Southside

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #128 on: May 18, 2022, 12:56:14 PM »
Yes, I can put the magnet right against it and it won't change anything.  Given the moisture issue mentioned earlier I wonder if it might not be the sensor.  
Franklin buncher and skidder
JD Processor
Woodmizer LT Super 70 and LT35 sawmill, KD250 kiln, BMS 250 sharpener and setter
Riehl Edger
Woodmaster 725 and 4000 planner and moulder
Enough cows to ensure there is no spare time.
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Offline fluidpowerpro

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #129 on: May 18, 2022, 01:31:10 PM »
Totally grasping at straws here and maybe just a coincidence, but a few posts back I commented about an earlier experience I had with transient voltage spikes causing issues in a machine. 
The issue was that the voltage spikes took out the contacts in a proximity switch. That appears to be exactly what that sensor is. A proximity switch. 
Is there a solenoid coil in the system? When coils de-energize, they can put voltage spikes into the system. Kind of like electrical inertia. These spikes are not anything you or I could measure with a typical VOM. The fix was to install a diode around the switch. 
If this is the issue, its something the electrical engineers at WM need to look into. 
Change is hard....
Especially when a jar full of it falls off the top shelf and hits your head!

Offline Jim_Rogers

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #130 on: May 18, 2022, 04:47:56 PM »
I always had my grinder plugged into a surg strip to try and avoid any electrical issues during lightning storms.

Jim Rogers
Whatever you do, have fun doing it!
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Offline Crossroads

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #131 on: May 18, 2022, 11:49:31 PM »
My sensor is good, the blade advance is the only thing that is working. I spoke with a WM engineer this morning and have parts on the way. Hopefully theyíll make a difference. Currently I have an Elektrik board. Hereís one to make you scratch your head. At neutral and L1 I have 122v but at L1 and the ground bus in the bottom of the box I have 163v 
With the right fulcrum and enough leverage, you can move the world!

2017 LT40 wide, BMS250 and BMT250,036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Offline Southside

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #132 on: May 18, 2022, 11:57:36 PM »
What does ground to neutral read on the outlet?  I have seen grounds hot before from bleed.  
Franklin buncher and skidder
JD Processor
Woodmizer LT Super 70 and LT35 sawmill, KD250 kiln, BMS 250 sharpener and setter
Riehl Edger
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Enough cows to ensure there is no spare time.
White Oak Meadows

Offline Crossroads

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #133 on: May 19, 2022, 06:59:27 AM »
Ah, never thought to check that , but have 46v ac from neutral to ground. 
With the right fulcrum and enough leverage, you can move the world!

2017 LT40 wide, BMS250 and BMT250,036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Online Machinebuilder

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #134 on: May 19, 2022, 10:47:00 AM »

@Crossroads 

Please recheck the neutral to ground voltage at your main breaker box.
If you have any voltage there is a serious problem with the bonding and you need to call your power company and get it fixed ASAP.

If it is ok there you have a serious problem with your wiring and it needs to be repaired ASAP

I tend to be overly cautious on electrical safety issues, I hate being shocked.
Dave, Woodmizer LT15, Husqvarna 465 and 435, Bobcat 751, David Brown 770

Offline Crossroads

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #135 on: May 20, 2022, 12:29:58 AM »

@Crossroads

Please recheck the neutral to ground voltage at your main breaker box.
If you have any voltage there is a serious problem with the bonding and you need to call your power company and get it fixed ASAP.

If it is ok there you have a serious problem with your wiring and it needs to be repaired ASAP

I tend to be overly cautious on electrical safety issues, I hate being shocked.
Checked at the outlet and several others and there is no voltage between ground and neutral at the outlets. 
Received a new board today, but I got home late and wasnít able to install it. Also, I donít have any 5a fuses. Will update after I get fuses and have a chance to install the new board. 
With the right fulcrum and enough leverage, you can move the world!

2017 LT40 wide, BMS250 and BMT250,036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Offline Durf700

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #136 on: May 21, 2022, 11:56:21 AM »
I have an idea for those of you that are having problems..  maybe you should request that Woodmizer sharpens your blades for free including shipping until they can fix these issues that your having with your sharpeners! 

I was worried about this kind of stuff with Covid and how it would affect  quality and reliability ..  I am lucky and was able to get my sharpener a few months before covid hit and then within 4 months of Covid I picked up my setter.  its terrible dealing with these issues. 

sounds like the sensor that is supposed to detect the magnets on the bands is the issue..  hope that helps alot of people out!


Offline jimbarry

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #137 on: May 21, 2022, 01:40:06 PM »
I have an idea for those of you that are having problems..  maybe you should request that Woodmizer sharpens your blades for free including shipping until they can fix these issues that your having with your sharpeners!  

I was worried about this kind of stuff with Covid and how it would affect  quality and reliability ..  I am lucky and was able to get my sharpener a few months before covid hit and then within 4 months of Covid I picked up my setter.  its terrible dealing with these issues.  

sounds like the sensor that is supposed to detect the magnets on the bands is the issue..  hope that helps alot of people out!
Not just magnets, it will detect metal if there' s a bend in the blade.

Offline Crossroads

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #138 on: May 21, 2022, 10:52:56 PM »
Got the new board on Thursday, but didnít have time to mess with it until this morning. Installed the new board and the jumpers. Everything is up an running now. Now itís just a matter of getting past the learning curve. 
With the right fulcrum and enough leverage, you can move the world!

2017 LT40 wide, BMS250 and BMT250,036 stihl, 2001 Dodge 3500 5.9 Cummins, l8000 Ford dump truck, hr16 Terex excavator, Farmi logging winch, Valley je 2x24 edger, Gehl ctl65 skid steer

Offline jimbarry

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Re: new Woodmizer BMS250MU, ongoing issue to get it working
« Reply #139 on: May 22, 2022, 06:48:56 AM »
@Crossroads when you get one figured out, you will want two. :)



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