JohnM
Jun 22, 2003, 04:10 PM
Hi Patrick,
I am having motor shutdown problems in governor mode with my Phoenix 45 in my Eolo heli.
I am using the following:
Futaba 9CHP TX
Futaba R148DF RX
Mega 16/15/3 motor
Phoenix 45
8 cell packs of Panasonic 3000HV cells
It is a new 2 board Phoenix 45. I originally ran it in non-governor mode using the following settings.
1. Cutoff Voltage - #2 - 5.0 volts
2. Current Limiting - #3 - Standard
3. Brake Type - #5 - Brake disabled
4. Throttle Type - #2 - Fixed Throttle
5. Timing - #1 - High advanced
6. Cutoff Type - #2 - Soft Cutoff
7. PWM Switching Rate - #1 - 11KHz
The controller worked without any problems for several flights with the above settings. I then re-programmed the controller for governor mode with the following settings:
1. Cutoff Voltage - #2 - 5.0 volts
2. Current Limiting - #3 - Standard
3. Brake Type - #5 - Brake disabled
4. Throttle Type - #4 - Governor Mode - High RPM
5. Timing - #1 - High advanced
6. Cutoff Type - #2 - Soft Cutoff
7. PWM Switching Rate - #1 - 11KHz
I noticed a few differences after re-programming. The first was that the headspeed, even at 100% on the throttle curve, was much slower than when at the 85% setting on the throttle curve in non-governor mode. The LED would never turn on indicated that the throttle was at maximum. I flew the Eolo like this and it resulted in a motor shutdown. I increased the end point on the throttle channel to 125% and this raised the headspeed but it was still not as fast as in non-governor mode. I flew the Eolo successfully for a couple of flights, but on the third flight the motor shutdown again. I then increased the end point on the throttle channel to 140% and the headspeed is fast but the LED would still not turn on indicated that the throttle was at maximum. The controller is in the open air and does not seem hot at the end of the flights.
Is there something I need to do to calibrate the high throttle setting? Is the PWM setting of 11KHz correct for the Mega 16/15/3? I have since re-programed the controller for a 4.0 cutoff voltage and current limiting detection disabled. I flew a few more successful flights but I still don't think the controller is functioning properly.
I did notice that I have a difficult time programming the controller in heli mode on my Futaba 9CH. The mid point on the throttle stick is not mid point for programming. If I switch to airplane mode on the Futaba 9CH, I do not have a problem with programming.
John
Update 7/7/2003
I have switched the controller to the new one I just received and it does not exhibit the same problem. Governor mode is working flawlessly.
I am having motor shutdown problems in governor mode with my Phoenix 45 in my Eolo heli.
I am using the following:
Futaba 9CHP TX
Futaba R148DF RX
Mega 16/15/3 motor
Phoenix 45
8 cell packs of Panasonic 3000HV cells
It is a new 2 board Phoenix 45. I originally ran it in non-governor mode using the following settings.
1. Cutoff Voltage - #2 - 5.0 volts
2. Current Limiting - #3 - Standard
3. Brake Type - #5 - Brake disabled
4. Throttle Type - #2 - Fixed Throttle
5. Timing - #1 - High advanced
6. Cutoff Type - #2 - Soft Cutoff
7. PWM Switching Rate - #1 - 11KHz
The controller worked without any problems for several flights with the above settings. I then re-programmed the controller for governor mode with the following settings:
1. Cutoff Voltage - #2 - 5.0 volts
2. Current Limiting - #3 - Standard
3. Brake Type - #5 - Brake disabled
4. Throttle Type - #4 - Governor Mode - High RPM
5. Timing - #1 - High advanced
6. Cutoff Type - #2 - Soft Cutoff
7. PWM Switching Rate - #1 - 11KHz
I noticed a few differences after re-programming. The first was that the headspeed, even at 100% on the throttle curve, was much slower than when at the 85% setting on the throttle curve in non-governor mode. The LED would never turn on indicated that the throttle was at maximum. I flew the Eolo like this and it resulted in a motor shutdown. I increased the end point on the throttle channel to 125% and this raised the headspeed but it was still not as fast as in non-governor mode. I flew the Eolo successfully for a couple of flights, but on the third flight the motor shutdown again. I then increased the end point on the throttle channel to 140% and the headspeed is fast but the LED would still not turn on indicated that the throttle was at maximum. The controller is in the open air and does not seem hot at the end of the flights.
Is there something I need to do to calibrate the high throttle setting? Is the PWM setting of 11KHz correct for the Mega 16/15/3? I have since re-programed the controller for a 4.0 cutoff voltage and current limiting detection disabled. I flew a few more successful flights but I still don't think the controller is functioning properly.
I did notice that I have a difficult time programming the controller in heli mode on my Futaba 9CH. The mid point on the throttle stick is not mid point for programming. If I switch to airplane mode on the Futaba 9CH, I do not have a problem with programming.
John
Update 7/7/2003
I have switched the controller to the new one I just received and it does not exhibit the same problem. Governor mode is working flawlessly.