Robot Power MegaMoto User Manual Download Page 13

Version 1.6 - May 28, 2012 

13

 

Disclaimer:   
 
The MegaMoto is intended for educational and experimental uses.  It should not be 
used in applications where human life or health or significant property value 
depend on its proper operation.  Robot Power is not responsible for any loss or 
damage incurred by the operation or failure of this unit.  We make no claims as to 
suitability or fitness for any application or use.  The specifications listed for the unit 
are accurate to the best of our knowledge but are not guaranteed in any way.  The 
buyer assumes all responsibility for proper use, testing, and verification of this unit 
in any application.  Robot Power’s liability is limited to replacement of defective 
DOA units.  By installing and using this unit you are agreeing to these terms.  If you 
do not agree you may return any unused units to Robot Power for a refund. 

 

Summary of Contents for MegaMoto

Page 1: ...gaMoto and MegaMoto plus are electrically identical Heatsinks have been added to the Plus to increase power handling All specifications input outputs and instructions except for current handling apply...

Page 2: ...rent ganged half bridge Double above PWM frequency DC 20kHz Current Sense Output Vc I 0 075 Vc 0 75 at 10A Vc 2 99V at 40A Input voltage levels 2 5V 5 5V logic high 1 7V logic low Size 2 1 x 2 9 x 0 5...

Page 3: ...nable and disable the MegaMoto There are four choices on this jumper block One and only one jumper must be placed on this block to choose the enable source Logic HIGH enables the unit Do not attempt t...

Page 4: ...ense output to a different analog input pin See the application examples section for more details The current sense output is optional and need not be connected if monitoring of the load current is no...

Page 5: ...ay be used for driving uni directional loads such as lamps heaters solenoids or DC motors in one direction The true half bridge configuration of the power MOSFETs in the power chips allow for efficien...

Page 6: ...ode Example Figure 5 MegaMoto half bridge mode Function Jumper Notes Enable 5V Both power chips are always enabled and cannot be disabled via program control when the jumper is in this position PWMA D...

Page 7: ...s slightly tricky to use because the power section of the power chips are joined together If the chips switch at different times there will be a short condition from chip to chip potentially destroyin...

Page 8: ...mper block for each MegaMoto even if there are several units stacked Each unit s inputs are indpendent The MegaMoto requires an Enable signal a simple 5V connected to the input via the available jumpe...

Page 9: ...be connected in parallel A secondary function of the current sense output is to indicate if the device has gone into protective shutdown The Arduino can monitor the current sensor voltage to detect sa...

Page 10: ...age sources batteries or power supplies are used say one to power the Arduino and one to power the MegaMoto it is imperative that the connection between the negative terminals of the voltage source be...

Page 11: ...y in the circuit to dissipate without the inductive voltage kick that often occurs on abrupt interruption of the load current When using a bench supply even switching from full speed to full stop may...

Page 12: ...this document or for application advice please feel free to contact us We ll be happy to answer your questions and hopefully together we can make your project using the MegaMoto a big success You can...

Page 13: ...s unit We make no claims as to suitability or fitness for any application or use The specifications listed for the unit are accurate to the best of our knowledge but are not guaranteed in any way The...

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