(for AXN Clouds-Fly plane)

HobbyWing Pentium-25A Programmable Brushless ESC
for Aircraft and Helicopter

UBEC -2A/5V VER3.1, DC 5.6V-16.8V 25A

Pentium-25A is the product in the "PENTIUM" series.  "PENTIUM" series has the full range
of ESCs from 6A to 100A. Programmable ESC to favour your different flying experiences.
Good functionalities and reliable. An ideal upgrade for your 300-400 class EP helicopters
(SJM 325 / 400, ESKY Belt-CP, Honey Bee King 2).

Specifications:
1.1 Output : Continues 25 A, Burst 35 A up to 10 Secs.
1.2 Input Voltage : 5.6V --- 16.8V ( L ithium : 2 – 4s or NiMH/NiCd 5 -12 Cells)
1.3 BEC (Battery Elimination Circuit) Output : 2A / 5V (Linear mode).
1.4 Max Speed: 210,000rpm for 2 Poles BLM, 70,000rpm for 6 poles BLM,
35,000rpm for 12 poles BLM. (BLM: BrushLess Motor)
1.5 Size : 45mm (L) * 24mm (W) * 11mm (H).
1.6 Weight : 22 g

(Remark: motor connectors and heat-shrink tubings need to be purchased additionally)

Features:
-Safety Arming Feature: Regardless the throttle stick position,
the motor will not spin after battery connected. 

-Throttle Calibration: Throttle range can be configured to provide best throttle linearity,
fully compatible with all market available transmitters.

Programmable Items :
● Brake Settings : brake enabled / brake disabled, default is brake disabled
● Battery Type : Li-xx(Li-ion or Li-poly) / Ni-xx(NiMh or Nicd) ， default is Li-xx.
● Low Voltage Protection Mode(Cutoff Mode) : power reducing / power cutoff, default is power reducing.
● Low Voltage Protection Threshold(Cutoff Threshold) : low / medium / high, default is medium cutoff voltage.

  1) For Li-xx battery ， number of battery cells are judged automatically ， low / medium / high
cutoff voltage for each cell are: 2.6V/2.85V/3.1V. For example: 3 Cell Li-Poly,
when medium cutoff voltage is set, the cutoff voltage is: 2.85*3=8.55V.

  2) For Ni-xx battery, low / medium / high cutoff voltages are 0/45%/60% of
the startup voltage. (0% means the low voltage cutoff function is disabled).
For example: 10 cells NiMH battery, fully charged voltage is 1.44*10=14.4V,
when medium cutoff voltage is set, the cutoff voltage is : 14.4*45%=6.5V

● Startup mode: normal / soft / super-soft, default is normal startup.

● Timing: low / medium / high, default is medium timing. In normal cases,
low timing can be used for most motors. But for high efficiency,
we recommend the Low timing for 2 poles motor and Medium timing for 6 poles
and above. For higher speed, High timing could be used.

● Full Protection F eatures: Low-voltage cutoff protection
/ over-heat protection / throttle signal lost protection .

 Advantages:
● Military standard capacitor with extreme low resistance is used at voltage
input section, this will increase the ability of prevention of unwanted RF Noise/
Interference during flying.
● Low resistance PCB is used at power output section to get best
current endurance capability.
● Microprocessor uses separate voltage regulator IC, with good
anti-jamming capability.
● Compatible with Hobbywing's Program Card.
● Intellectual property rights of our own.