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Re: Electrical Problem with CF731 Pro
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On Jan 20, 2021, at 6:28 PM, imranindiana via groups.io <imranindiana@...> wrote:
? Greg, To me, in way of prioritizing the trouble shooting, I would work on the table saw motor cabling. To be precise, the part between selector switch and the disconnect where you isolated the different motors. Your trouble shooting points to this section of wiring having the problem and it moves from table saw motor to shaper motor and both motors are fine otherwise. Imran? On Jan 20, 2021, at 6:11 PM, Greg Goldin <goldinarch@...> wrote: ?Hi Imran, First, thanks again for thinking about this crazy situation. Yes!? Same exact outcome:? Shaper motor attached to Table Saw selector terminals fails to start, and moving the selector off that to either J/P or Shaper (now Table Saw) and neither will start.? Must first be sure selector is not on the TDC selection, and then power off, power on.? Then either of the two motors will work so long as I do not move the selector again through the TDC selection. Any thoughts? Was just now about to remove the Table Saw stop button from the equation, in two ways.? First, entirely disconnected so the wires are dangling free; second connect the two wires to mimic N/C which is the regular condition of the stop switch(es).? I will report back shortly. Greg |
Re: Electrical Problem with CF731 Pro
开云体育Greg, To me, in way of prioritizing the trouble shooting, I would work on the table saw motor cabling. To be precise, the part between selector switch and the disconnect where you isolated the different motors. Your trouble shooting points to this section of wiring having the problem and it moves from table saw motor to shaper motor and both motors are fine otherwise. Imran? On Jan 20, 2021, at 6:11 PM, Greg Goldin <goldinarch@...> wrote:
?Hi Imran, First, thanks again for thinking about this crazy situation. Yes!? Same exact outcome:? Shaper motor attached to Table Saw selector terminals fails to start, and moving the selector off that to either J/P or Shaper (now Table Saw) and neither will start.? Must first be sure selector is not on the TDC selection, and then power off, power on.? Then either of the two motors will work so long as I do not move the selector again through the TDC selection. Any thoughts? Was just now about to remove the Table Saw stop button from the equation, in two ways.? First, entirely disconnected so the wires are dangling free; second connect the two wires to mimic N/C which is the regular condition of the stop switch(es).? I will report back shortly. Greg |
Re: Electrical Problem with CF731 Pro
Hi Imran,
First, thanks again for thinking about this crazy situation. Yes!? Same exact outcome:? Shaper motor attached to Table Saw selector terminals fails to start, and moving the selector off that to either J/P or Shaper (now Table Saw) and neither will start.? Must first be sure selector is not on the TDC selection, and then power off, power on.? Then either of the two motors will work so long as I do not move the selector again through the TDC selection. Any thoughts? Was just now about to remove the Table Saw stop button from the equation, in two ways.? First, entirely disconnected so the wires are dangling free; second connect the two wires to mimic N/C which is the regular condition of the stop switch(es).? I will report back shortly. Greg |
Re: Calibration of power drive angle
开云体育Thanks David, Like you and Lucky described, I do the cut test to confirm calibration. I calibrate with precision 90 & 45 squares. I am just curious what my wixey angle gauge does. If memory serves me right if I zero it on the table it shows 0 or 90 depending upon which side I use on the blade. I do not like using digital angle gauge for calibration because, well it is digital; you do not know when it is going to flip plus it does have repeatability error. Imran On Jan 20, 2021, at 5:19 PM, david@... via groups.io <david@...> wrote:
?Imran,? For the 90° stop, I cross cut a 1x3 on edge with the blade fully up, flip the off-cut over, put the two pieces back together on the bench and check with a straight edge. ?Same method with a 1 x 3 at 45 and check for square. David
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Re: Calibration of power drive angle
开云体育Imran,?For the 90° stop, I cross cut a 1x3 on edge with the blade fully up, flip the off-cut over, put the two pieces back together on the bench and check with a straight edge. ?Same method with a 1 x 3 at 45 and check for square. David
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Re: Electrical Problem with CF731 Pro
开云体育Hi Greg, When you plugged shaper motor into table saw position, was the outcome identical to what happens with original wiring and selecting table saw? That is, you have to power cycle to restart? Imran On Jan 20, 2021, at 4:28 PM, Greg Goldin <goldinarch@...> wrote:
?Hi Imran, Thanks for your thoughts.? I have disconnected what I presumed was the offending motor.? Made no difference.? I have checked resistance across all three fields of each 3 phase motor, 1-2, 1-3, 2-3.? Everything there is normal, no red flags.? I attached the Table Saw motor to the Shaper position on the selector switch, and that motor runs just fine from that position on the selector. I then wired the Shaper motor to the Table Saw position on the selector switch and, predictably, it would not start.? The Shaper motor works fine connected to its regular location on the switch. I have also checked continuity on every switch on the machine.? All three safety micro switches, all three stop buttons, all three start buttons.? No failures indicated, at least in continuity tests. I have made videos of each motor starting and stopping, focusing on the two relays which sequence with the Inverter.? The progression goes: Push start button, K-1 closes (a pair of paddles are visible in a window), the Inverter sends a start signal which closes K-2 (visible by a latch the pulls in when closed and audible from a loud click that latch makes), motor spins.? Push stop, K-2 instantly closes, K-1 remains open until the Inverter decides braking is complete, and then K-1 closes My next move is to remove the Table Saw stop button from the equation.? Since these are wired in parallel, taking it out might answer the question of whether it is at fault. Until then, I'll look at Annu's posts. Thanks, Greg |
Re: Calibration of power drive angle
开云体育I guess i will need to check my angle gauge now. I did not use it to calibrate 90 & 45 stops on the saw though. Imran On Jan 20, 2021, at 4:26 PM, david@... via groups.io <david@...> wrote:
?I’m with Lucky on this one. ?I have not found that the digital angle indicators produce very accurate results when used the set the angle stops on the saw trunion. David Best https://www.instagram.com/davidpbest/
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Re: Changing saws
开云体育Hi Glen:Apologies for the delayed reply. My pleasure for whatever help I was able to give. I also have ongoing “issues” but overall my RL250 is served well. Over the last week it has not been working — which is the first time since 2013 that it would not start. In the end, my electrician discovered that the solenoid governing the water-entry for fire suppression was activating, which in turn cuts all power to the machine. So I had to take off multiple panels to try to trace which sensor was acting up. I did not find the sensors, which are in areas outside the dust filter box, but there are two plastic tubes up high in the dust area which seem to be associated with the metal water pipe and sprinkler system. I had a small amount of chips and dust packed hard in this area, covering the tubes. The chips were long and curly (pine) and unusual for me. I immediately thought of the “Red Grandis” issues that have been reported on the FOG. Anyway, my RL250 is back up, working imperfectly as always. But I’m delighted with the 7 years of non-stop use, despite the design issues. Ditto on your positive views about the Kappa 400 X-motion. I love my saw too. You can have your “music in the heavens”. I’m an ACDC “Highway to Hell” kind of guy! LOL. Now, about that road trip, David B., when are you coming to Brisbane?!!!! :-) Take care.
Warm regards, Lucky
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Re: Electrical Problem with CF731 Pro
Hi Imran,
Thanks for your thoughts.? I have disconnected what I presumed was the offending motor.? Made no difference.? I have checked resistance across all three fields of each 3 phase motor, 1-2, 1-3, 2-3.? Everything there is normal, no red flags.? I attached the Table Saw motor to the Shaper position on the selector switch, and that motor runs just fine from that position on the selector. I then wired the Shaper motor to the Table Saw position on the selector switch and, predictably, it would not start.? The Shaper motor works fine connected to its regular location on the switch. I have also checked continuity on every switch on the machine.? All three safety micro switches, all three stop buttons, all three start buttons.? No failures indicated, at least in continuity tests. I have made videos of each motor starting and stopping, focusing on the two relays which sequence with the Inverter.? The progression goes: Push start button, K-1 closes (a pair of paddles are visible in a window), the Inverter sends a start signal which closes K-2 (visible by a latch the pulls in when closed and audible from a loud click that latch makes), motor spins.? Push stop, K-2 instantly closes, K-1 remains open until the Inverter decides braking is complete, and then K-1 closes My next move is to remove the Table Saw stop button from the equation.? Since these are wired in parallel, taking it out might answer the question of whether it is at fault. Until then, I'll look at Annu's posts. Thanks, Greg |
Re: Electrical Problem with CF731 Pro
Hi Brian,? I have checked all start and stop buttons, for continuity across the switch, whether N/O or N/C. No problems but I will now triple check since it is a possibility. I am going to entirely remove the table saw switches from equation and see what happens, if anything. Thanks for the suggestions.? Greg On Wed, Jan 20, 2021, 6:46 AM Brian Lamb <blamb11@...> wrote:
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Re: Calibration of power drive angle
开云体育I’m with Lucky on this one. ?I have not found that the digital angle indicators produce very accurate results when used the set the angle stops on the saw trunion.David Best https://www.instagram.com/davidpbest/
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Re: Calibration of power drive angle
开云体育Hi Mark:When calibrating my Kappa, I tried the tilt box method and was surprised how inaccurate it was for me. Maybe the fact that the tilt box is not accurate enough, or maybe the fact that a saw blade body is not necessary ground flat, or a combo? For me, making test cuts in timber and measuring the results yielded the best calibration. 90 degree cuts in two thickish pieces, butt together and check with a straight edge. 45 degree cuts and then check for square.? I’d be interested in whether the tilt box works for you. Cheers.? Warm regards, Lucky? On 21 Jan 2021, at 4:52 am, Mark Kessler <mkessler10@...> wrote:
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Re: Job site saw recommendation?
开云体育James and Bird,?Thanks for the responses! I'll certainly add the Dewalt to the list of saws to check out. ?Always love hearing positive responses from members here. ? Anthony?
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Re: Calibration of power drive angle
开云体育ack… closer to 2 times better, so your choice. Neither one are very close when you are talking metal working, but for wood….
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Re: Calibration of power drive angle
开云体育Graduations on the Mitutoyo are 5 minutes, that’s 1/12?, which is .00145” per inch, which by my math is roughly 3 times better than .0035”.
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Re: Calibration of power drive angle
开云体育Thanks, is it even possible to set a vernier like the Mitutoyo within that range? Assuming it is calibrated and you are staring at the scale dead onRegards, Mark On Jan 20, 2021, at 2:22 PM, Brian Lamb <blamb11@...> wrote:
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Re: Calibration of power drive angle
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Calibration of power drive angle
开云体育I have the procedure, is a digital tilt box accurate enough or am I better of using a vernier scale protractor like the Mitutoyo 187-201. Looks like the tilt boxes are accurate within .2deg.Regards, Mark |