MagForce motor system installation: Difference between revisions

* Go to the 1Oscillation screen and press the ON button - the display will say "Measure"

* Swing the bell by hand or by using the EXE key to pulse (single direction) to a little more than 20 degrees. Make sure that the M light is blinking on the control board. If not, check the light on the rear of the proximity sensor. Check the sensor connections. The period at the top of the screen should change from the default value of 900 to the actual swinging period of the bell.

* when bell has coasted to about 20 degrees, watch for the period to update then press the ON key to save it current period

Set <strong>%Start</strong> to 50. The default is 95. Too long of a pulse will end up fighting the starting of the bell. For proximity sensor systems, this value determines the percentage of the startup period (set in 1Oscillation) the motor will be energized until the sensor provides a period signal. Longer pulses may cause the motor to brake the bell as it back swings. If the bell has a hard time starting, experiment with different values here, and also the number of starting pulses (see below). Errors will result if the sensor doesn’t see a change before the number of start pulses has counted out.

Set <strong>%Brake</strong> to zero while in the setup mode to prevent overheating while testing.

Set <strong>StaImp</strong> to 8 or 10. During testing below, count how many pulses it takes for the proximity sensor to see the flag go away, then you can set this to about 2 over that count. The maximum value is 20. If you are using more than ten, experiment with other values of %Start to get the bell moving with fewer pulses.

Set <strong>MaxAmpli</strong> to a large value like 90 to 120 (unless there are obstacles the bell might collide with) it will default to ten degrees higher than Angle before auto calculations then 5 degrees higher when testing is complete. A higher value will prevent shutdowns for exceeding the maximum angle during experimentation (error status = MaxAmpli).

<strong>P-regulator</strong> and <strong>I-regulator</strong> both default to 50 for fully automatic calculations. Semi automatic calculations are made when they are set to equal values other than 50; in that case only the ideal I will be calculated and saved (no restart needed, P will be stored with the value you set). If the bell is easy to swing a quicker semi-automatic calculation will result with both P-regulator and I-regulator both set to 25. Try the default of 50 first, then change to 25 (with a strong motor) if the CalcImp mode seems to ‘hunt' for a long time. If the motor is suspected to be weak for the bell, set both regulators to a higher value such as 75.  

The first time it will say ‘Start’ then ‘Calc-Imp’ then ‘Start.' After you stop the motor the status display will read 'Restart.'

The second time will say ‘Start’ then ‘Calc-P’ then 'Swing.' The calculated parameters are not saved until the status display reads 'Swing.' After you stop the motor the status display will read 'Stop.' The calculated parameters are saved in non-volatile memory, so power can be safely turned off at this point.

==== First Swing Test ====

''Calculating the ideal impulse''

Press ON to start the first automated experiment. Status on the lower right of the display will read “StartP" until the system has fired the number of impulses you specified in StaImp. Next it will read “Start” as it approaches the desired angle. When it begins to search for the ideal pulse, it will read “CalcImp."

* If you get ‘ErrBlo’ (blocked bell), maybe it needs more pulses to start, try increasing StaImp

* When ’Swing’ appears on the display, the system has calculated the ideal impulse (middle value on the lower line on the status screen) to swing the bell. If you would like the bell to swing higheror lower, try other values for Angle and MaxAmpli. It will recalculate the ideal impulse based on changes you make at this time.

*  When you like the angle and the display again says ‘Swing’ you can press ON to stop the bell swinging. Wait for the bell to come to a full stop.

*  The terminal display will indicate ‘Restart’ to indicate that the experiment is not yet complete.

==== Second Swing Test ====

''Calculate the over/under Proportional correction factor''

The system will not require a second swing if you set P-regulator to values other than 50. It will use your parameter and expect you to experiment to make sure it will work properly.

Press ON to start the second experiment. The terminal display will say ‘CalculP’ while it is determining the setting for the P-regulator. This is the amount that will be subtracted from the ideal motor pulse when the bell swings too high. It is also added to the ideal motor pulse if the motor swings too low.

When ‘Swing’ appears on the display, the calculation is complete and you may press ON to stop the bell. Wait for the bell to come to a full stop.

In some cases, the display may say ‘Restart’ instead of ‘Stop’ because the motor may not be ideally sized for the bell and values for P and I could not be found in the normal range. If this occurs, tweak the PowerStaSwi (and maybe P/I-regulator if that doesn't help, see above) parameter and press ON again until you see ‘Swing’. You have not successfully finished the setup and the parameters are not permanently saved until you reach status=Swing.

''Testing performance and re-calucuating after making adjustments''

The ideal impulse is not written to memory unless I-regulator is zero. It will automatically go to zero if the system calculated the value. If you entered your own value for I then you will also have to set I- regulator to zero yourself to save it in memory (manual setup mode), then swing the bell again to make sure it works.

Adjustments to %Start, %Brake, PowerBrake1 and PowerBrake2 can be made at this time without having to recalculate Ideal pulses. You can test them to be sure the motor overloads don’t pop when this happens.