Greetings all;
The cat is out of the bag. You all now know how to change the programming parameters of your PowerPro Headstock. You also know how to ruin your PowerPro, void the Factory Warranty, destroy many of your accessories and do bodily harm to your person and bystanders in your shop!
Be advised, that every change made to the program causes a reaction somewhere else in the program… at another speed… at another current load… at another torque.
The changes stated by “micharltoc” are correct in theory but changing these parameters randomly as he suggests is dangerous. These changes can cause damage to the electronics in your PowerPro, damage to your major and minor accessories, cause injury to yourself AND void your Shopsmith Factory Warrantee. In Michael’s case this works for him but the IrOFFSET setting is 40-points higher than we at Shopsmith and the engineers at TeknaTool recommend. Factory setting for the IrOFFSET is 82. When we work with a customer over the phone, we have him set the IrOFFSET to a number in the mid 90’s. This is what we have found to be the best for noise reduction and minimal over-speeding.
The higher the IrOFFSET, the greater the over-speed problem. In Michael’s example of the Bandsaw, by his own admission in the last lines of his post ”The over speeding is not much of an issue because…” he recognizes a problem with the machine running faster than it should. He is correct, the over-speed slows with load but when the IrOFFSET is too high, the over-speed will be way past the recommended speed for the Bandsaw. In addition, this change in the IrOFFSET will effect all other operations at all speeds. This causes them to over-speed, not by several hundred RPM as in the example of the Bandsaw, but by several thousand rpm at Table Saw and Planer speeds.
The over-speed increase is proportional. Changing the IrOFFSET to the point where it causes the Headstock to over-speed will change all speeds by the percentage of the increase. For example, the Bandsaw normally runs at 1000-RPM. If changing the IrOFFSET lets the speed increase to 2000 RPM, then it has doubled the “idle” speed. This will throw tires from the Bandsaw. Consider the Belt Sander at 1900 RPM, the Table Saw at 3450 RPM or the Planer at 4500 RPM. These speeds would also be doubled. This would certainly cause damage to the Belt Sander at 3800 RPM. The Table Saw with a spinning blade running at 6900 RPM, would be down-right dangerous as would the cutter head of the planer spinning at 9000 RPM. AND this is the result of changing ONLY ONE of the programming parameters. There are many more that can be changes with similar dire consequences.
Do yourselves a favor…DON’T change the PowerPro program! You can, AND WILL do serious damage to your machinery and cause serious personal injury to yourself and any visitors to your shop.
Work with us here. If you are experiencing the problems that Michael was with the Bandsaw, PLEASE call Shopsmith Customer Service (800) 543-7586. We want to work out these issues with you individually. Every machine and every circumstance is different. Thank you.
Have a GREAT day!!!!
Jim
michaeltoc wrote:Here it is:
(I'll also start a new thread - it may make searching easier)
ADJUSTING THE POWERPRO SETTINGS
*** DISCLAIMER ***
This procedure was given to me by ShopSmith Tech Support to solve the banging noise issue while using the bandsaw. It involves making changes to two settings. Please read and follow this carefully, as I don’t know what will happen if the wrong parameter is changed.
1) Press “LOCK” and “9500” at the same time.
2) Press “2000”. You will be prompted to enter the Service Password (3210) as follows:
i) Press “900” to set the first digit to 3
ii) Press “1350” to set the second digit to 2
iii) Press “2000” to set the third digit to 1
iv) The display should now read “3210”. Press “CONFIRM”. Display will say “Accepted”
3) Press “UP RPM” until the top line reads “CurLimM = “. (Make a note of this original value).
4) Press “CONFIRM” to edit this value. Use the “UP RPM” or “DOWN RPM” buttons to set this value to 100, then press “CONFIRM”.
5) Press “UP RPM” until the top line reads “IrOFFSET = “. (Make a note of this original value).
6) Press “CONFIRM” to edit this value. Use the “UP RPM” or “DOWN RPM” buttons to set this value to 100, then press “CONFIRM”.
7) Press “OFF” to exit Service Mode.
8) Test the bandsaw by resawing a wide board.
9) If the banging noise persists, repeat this procedure and set “IrOFFSET” to a higher value
10) If the banging noise is eliminated, but overspeed is a problem, set “IrOFFSET” to a lower value.
11) There is a compromise between the banging and overspeed. Try to find the smallest value that will eliminate the banging, and the overspeed will not be much of an issue. In my case this value was 130.
Overspeed is not much of an issue because the speed immediately drops to the set point as soon as a load is applied. Perhaps one of the other settings can adjust the overspeed, but I do not know which one, nor am I willing to “experiment”.
