Sentry MDC-X440
[Motor Drive Controller - Version 4.4.0]

   
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Basic AEG MOSFET motor drive controller with added li-poly protection

Controller Features


Advanced Technology


  • Driven by a PIC18LF2321 28-pin CPU, the most powerful ever used on an AEG MOSFET.
  • Uses the latest in ultra-small SMD components to minimize board dimensions.
  • 0.22F supercap and boost convertor allows normal operation on line-voltage dips down to 2.5V.
  • Unaffected by Magnum/Turbo motors or any future "Ultra Magnum/Turbo" motors.
  • Startup diagnostic prevents sudden firing if the trigger is shorted during battery connection.
  • Short-circuit, under-voltage, over-voltage(ESD), over-current, and over-temperature protection.
  • Micro-amp sleep current allows batteries to remain connected for several years.
MOSFET Trigger Switching


  • Eliminates damaging electrical arcing of the trigger switch contacts.
  • Lower resistance compared to mechanical switching, increasing motor current.
  • Driven by a IRLS3034 MOSFET, rated for 195A continuous operation.
Motor Active Braking


  • Eliminates motor spin-down time when powered off, preventing piston over-travel on semi-fire.
  • Allows semi-fire to properly reset the piston in any AEG setup, preventing component stress.
  • Driven by a SUM110P06 MOSFET, rated for 110A braking operation.
PWM RoF Control
  • PWM RoF reduction to 55%, 70%, or 85% of AEG's base-RoF.
Li-poly Protection


  • Monitors li-poly battery voltage and prevents firing when below 3.2v per cell.
  • Calculates the cell voltage via the main line, reducing wire clutter.
  • Compensates for voltage fluctuations during motor operation.

Technical Specifications


Electrical Ratings
Min Max Peak
Supply Voltage 2.5 16 4000 V
Motor Current -- 195 1372 A
Resistance 1.4 1.7 -- mΩ

Idle Firing
Current Draw 0.07 5 mA
Dimensions
Length Width Height
Board Size 1.82 0.54 0.44 inch
46 14 11 mm

To Battery To Gearbox Wire Gauge
Current Wires 16 16 16AWG inch
Signal Wires -- 18 24AWG inch

Parts List
 1x   Controller board

 Resources
 Bill of Materials
 Schematic
 Board Layout
  User Manual
 Installation Photos


Frequenty Asked Questions


Under contruction