Microdrive Advanced Motor
Control for
Electric Model Aircraft
Features
Auto arm feature. No need for complex setup, the controller notes the position of the throttle when it is armed and works everything else out - automatically! The unit will not arm at all unless transmitter signal is on and at low throttle position.
LED Indication indicating unarmed, armed but off, drive and full on, conditions.
Audible Arming Pulses. Even if you cannot see the LED you still know when the unit has armed as three audible pulses are emitted from the motor.
Acceleration delay. To reduce stress on batteries, motors and gearboxes, motor speeds are changed progressively.
Low On Resistance for cool, efficient operation using state of the art International Rectifier mosfets. Microdrive current ratings are continuous ratings. Microdrive controllers can take short-term overloads twice their continuous ratings.
User Selectable Brake for all units.
User Selectable BEC for all units.
Advanced Spurious Signal Protection and shutdown on lost signal.
Undervoltage cut out with 15-second override for those emergencies during landing.
Lightweight construction using surface mount technology
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Microamp. Current Measurement for Electric Model Aircraft
Microamp is a cost effective ammeter designed for use with electric powered aircraft.
Microamp is a valuable tool for optimising propeller choice checking batteries, choosing fuse ratings and verifying all components are being used within specification.
A33 model measures current up to 50Amps in ten 3.3Amp steps.
A50 model measures current up to 50Amps in ten 5Amp steps.
Microamp is factory set to measure average current but may be configured to measure instantaneous current. Measuring instantaneous current the ripple current may be measured.
Microdrive Controller Data
| Parameter | Units | Min. | Typ. | Max. |
| Nominal Battery Voltage DC | V | 7.2 | 12 | |
| Number of Cells | 6 | 10 | ||
| Switching Frequency | Hx | 1000 | ||
| Ramp Start(S units only) 0% to 100% | Sec. | 1 | ||
| BEC output voltage | V | 4.8 | 5.0 | 5.2 |
| BEC output peak current | A | 1.5 | ||
| Under voltage cut-out | V | 5.5 | 5.7 | 6.0 |
| Ambient temperature range | deg. C | -20 | 50 | |
| Height(excluding leads) | mm | 10 | ||
| Length (ex leads) M20 M40 |
mm | 28 40 |
||
| Width (ex leads)
M20 M40 |
mm | 28 35 |
||
| Weight (with leads) M20 M40 |
g | 20 30 |
||
| Controller - Model | M10P M10S |
M20P M20S |
M40p M40S |
|
| Instantaneous Current (less than 1 second) | 125A | 250S | 500A | |
| Short Term Current (less than 30 seconds)
|
20A | 40A | 50A | |
| Continuous Current (no time limit) | 10A | 20A | 30A |
|
|
Microdrive |
|
| M10S | Ramp start switched unit 10A/20A | £32 |
| M10P | Proportional 10A/20A unit | £33 |
| M20S | Ramp start switched unit 20A/40A | £36 |
| M20P | Proportional 20A/40A unit | £39 |
| M40S | Ramp start switched unit 40A/50A | £49 |
| M40P | Proportional 40A/50A unit | £55 |
| Continuous rating/30 second rating |
Microamp |
||
| A33 | Current measurement up to 33Amps in ten 3.3Amp steps | £25 |
| A50 | Current measurement up to 50 Amps in ten 5Amp steps | £25 |