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planer power drive height adjustment?


 

I have a cf-741 and I want to adjust the readout to match my planed wood thickness.? Anyone know how ti set the height on the power drive panel?

Thanks!

Marty


 

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Hi Marty,

Power up machine while pressing reset button on pad. plane a plank incrementally to 20mm by ignoring display and verifying thickness with caliper. When you achieve 20mm press reset again and if the display was not at 20.0mm it will reset to it.

I am told that it works in inches as well but I have not personally verified it and above is what I was told by Felder.

Imran

On Jul 21, 2021, at 4:19 PM, marty shultz <azmartys@...> wrote:

?I have a cf-741 and I want to adjust the readout to match my planed wood thickness.? Anyone know how ti set the height on the power drive panel?

Thanks!

Marty


 

I have an AD-741, this is how mine works:

Powering off the machine and then holding the reset button while you turn the machine on is how you change the readout from mm to inches.
When you hold the reset button while the unit is powered on already the digital readout is reset to 20.0mm or 0.785in (whichever the machine is set to display at the time).
To calibrate raise the bed and squeeze a 20mm piece between the bed and the rollers, then hold the reset button.

I hope that helps?

-Ameer


 

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Ameer,

Thanks for sharing the calibration method. I would just like to add that Felder recommends planning a board thicker than 20mm. Incrementally approach 20mm thickness while verifying with calipers.

Placing a board will add error depending upon what part of cutterhead makes contact with the board. There may also be variation between blades, etc.

Imran

On Jul 24, 2021, at 9:23 AM, Ameer N. <highentropy@...> wrote:

?I have an AD-741, this is how mine works:

Powering off the machine and then holding the reset button while you turn the machine on is how you change the readout from mm to inches.
When you hold the reset button while the unit is powered on already the digital readout is reset to 20.0mm or 0.785in (whichever the machine is set to display at the time).
To calibrate raise the bed and squeeze a 20mm piece between the bed and the rollers, then hold the reset button.

I hope that helps?

-Ameer


 

Imran,

Great follow up! I can see how that would really get the machine dialed in at 20mm.

My machine loses calibration every time I turn it off, perhaps this is because I run the machine off of a RPC? Therefore planing a board to 20mm each time and checking with calipers would leave me with a LOT of 20mm boards :P


 

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?Ameer,

? That really should not happen and would drive me nuts as DRO is my favorite feature. First a good RPC should not do that if you have the wild leg going only to the motor. I totally understand why you would want a faster method. Maybe you can mark the cutterhead at top with one of the blades at TDC at the bottom of cutterhead. This way you will get close to same result with your current method using a single calibrated 20mm setup board.

Out of curiosity, does the DRO show a random number, is slightly off or does it go to the same default value every time?

I assume you have already tried turning the RPC on/off with the main power switch on AD741 in the off position.

If it were me and I could conclusively determine that this is due to RPC and there are no damaged components in AD741, I would investigate if it is possible to incorporate a regulated PS for the related circuit/circuits. Especially, since I learned they are so cheap during my remote slider switch project.

Imran?

On Jul 25, 2021, at 1:26 PM, Ameer N. <highentropy@...> wrote:

?Imran,

Great follow up! I can see how that would really get the machine dialed in at 20mm.

My machine loses calibration every time I turn it off, perhaps this is because I run the machine off of a RPC? Therefore planing a board to 20mm each time and checking with calipers would leave me with a LOT of 20mm boards :P


 

Imran,

Sometimes I turn the AD741 power switch to OFF before shutting down the RPC, and sometimes I forget and the power switch is in the ON position when i power down the RPC. When I power the AD741 back up the DRO number is either at 20.0 or 0.785 regardless of where the bed is at. So it also switches between inches and mm between shutoffs. I'm not sure what the fix is, or if there is one? My unit is from 2004.

-Ameer


 
Edited

Hi Ameer,
?
My machine displays following upon power up, prior to displaying the table position. This happens irrespective of reset button status.
?
?
I recommend contacting Felder to find out what your model is suppose to do when it is powered up with reset held. If it is suppose to display 20mm or .785” your issue could be as simple as that the reset button is stuck or that the reset input (where ever it is being read) is stuck. It is already switching between “in” an “mm”, which is a good indicator.
?
If this turns out to be true, Felder should be able to offer a solution. If not there certainly are options you can explore.
?
Imran

On Jul 26, 2021, at 1:13 PM, Ameer N. <highentropy@...> wrote:

Imran,

Sometimes I turn the AD741 power switch to OFF before shutting down the RPC, and sometimes I forget and the power switch is in the ON position when i power down the RPC. When I power the AD741 back up the DRO number is either at 20.0 or 0.785 regardless of where the bed is at. So it also switches between inches and mm between shutoffs. I'm not sure what the fix is, or if there is one? My unit is from 2004.

-Ameer


 

Imran,

Immediately upon power up my display shows "U 2.1" for about 2 seconds. Then it will display either inches or mm. If I want to change the units, I have to power off and then hold the reset button while powering back on. Sometimes the calibration is lost and sometimes it is not, however it feels like most of the time the calibration is lost when powering back up.

Investigating the reset button is a good idea, as that's how it would change between units, perhaps something is happening there? Though once the AD741 is powered on the units aren't changed or reset.




-Ameer


 

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Ameer,

My first step would be to check with Felder if U 2.1 is normal or an error code. I do not know if the machine even displays error codes. Could be software version, who knows?

If you call Felder you can also ask for their opinion on what might be going on.

Imran

On Jul 27, 2021, at 12:48 PM, Ameer N. <highentropy@...> wrote:

?Imran,

Immediately upon power up my display shows "U 2.1" for about 2 seconds. Then it will display either inches or mm. If I want to change the units, I have to power off and then hold the reset button while powering back on. Sometimes the calibration is lost and sometimes it is not, however it feels like most of the time the calibration is lost when powering back up.

Investigating the reset button is a good idea, as that's how it would change between units, perhaps something is happening there? Though once the AD741 is powered on the units aren't changed or reset.


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-Ameer


 

Sorry it took me so long to respond.? I followed Ameer's directions because his display looked the same as mine.? Everything worked fine except the reset button doesn't always "reset".? It's a bit finicky but it worked in the end.

Thanks to both of you for your help!

Cheers,

Marty


 

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Hi Marty,

Glad it worked for you. Do you recall what your display shows upon power up?

Imran?

On Jul 27, 2021, at 10:04 PM, marty shultz <azmartys@...> wrote:

?Sorry it took me so long to respond.? I followed Ameer's directions because his display looked the same as mine.? Everything worked fine except the reset button doesn't always "reset".? It's a bit finicky but it worked in the end.

Thanks to both of you for your help!

Cheers,

Marty


 

My dro doesn't show any codes on power up.? It shows the same number on power up as it did on power down.

Cheers,

Marty


 

Marty,

Glad that worked for you! Interesting that your dro just shows the number. I figured U 2.1 was a software version but perhaps it is an error code? I'll have to contact felder support and inquire.

-Ameer


 

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Thanks Marty. I guess, I am wondering if I have a code as well. Will figure out thru felder.

Imran

On Jul 28, 2021, at 11:50 AM, Ameer N. <highentropy@...> wrote:

?Marty,

Glad that worked for you! Interesting that your dro just shows the number. I figured U 2.1 was a software version but perhaps it is an error code? I'll have to contact felder support and inquire.

-Ameer


 

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?Ameer,

If you have not yet called Felder, I will save you the trouble. I put a ticket in yesterday and got a call today. It is SW revision.

Upon inquiry I am told that the error codes that appear in my manual in Digi-Drive section also apply to power drive. Since Power drive is sec 8.8 and?Digi-Drive is sec 8.9, I assumed sec 8.9.9 only apply to?Digi-Drive.?Here is an example from my manual:



Imran

On Jul 28, 2021, at 11:50 AM, Ameer N. <highentropy@...> wrote:

?Marty,

Glad that worked for you! Interesting that your dro just shows the number. I figured U 2.1 was a software version but perhaps it is an error code? I'll have to contact felder support and inquire.

-Ameer


 

Imran,

I submitted an online question to Felder a few days back but have yet to hear a response.

So our initial theory was correct, it is a software version displayed.

This begs the question, why does Marty's not show anything?

-Ameer


 

Plane a piece of hardwood down from 30mm to 20mm checking with calipers each time until it is exactly 20mm, leave the bed where it is and hold the reset button. It should reset to 20mm.


 

Another idea is to move the bed 20mm when you shut down. Then hit reset after you power up if it doesn't say 20mm.