Product overview
The CKESC FLY 45A from Nanchang ChangKong Technology Co., Ltd. controls motor power in fixed-wing aircraft. Its 62 × 25 × 10 mm dimensions and 26 g weight, including wiring, define its installation footprint and mass. It combines a 3–4S input rating, a 5V, 3A switching step-down BEC and a 1000–2000 µs throttle range. Synchronous freewheeling is enabled by default. Rubycon electrolytic and high-capacity ceramic capacitors provide power filtering, while dual temperature monitoring supports protection. Standard and high-speed versions have distinct speed ratings for 2-, 12- and 14-pole motors.
Continuous current is 45A under specific cooling conditions; shorter ratings are 50A for 30 seconds and 55A for two seconds. After an unsuccessful start, protection limits starting current and automatically retries. Excessive motor load limits maximum throttle. Above 115°C, maximum output power gradually falls, potentially to 40% of full-throttle power; original power returns after cooling. After 200 ms of signal loss, output decreases, throttle falls below 50% within 1–2 seconds, then gradually reaches shutdown. Stall protection attempts a restart during normal operation, but a high-throttle stall may damage the controller. Low-voltage protection guards against battery overdischarge.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Nanchang ChangKong Technology Co., Ltd.; CKESC FLY 45A fixed-wing electronic speed controller. |
| Rated specification | 45A, 3–4S. |
| Dimensions | 62 × 25 × 10 mm. |
| Weight | 26 g.Including wiring. |
| Maximum continuous operating current | 45A.Specific cooling conditions. |
| Maximum current | 50A.30-second duration. |
| Momentary current | 55A.2-second duration. |
| BEC output | 5V, 3A switching step-down BEC. |
| Standby current | 12mA.At 16V. |
| Throttle travel range | 1000–2000 µs. |
| Standard-version speed, 2 poles | 210000 rpm.Standard version; 2-pole motor. |
| Standard-version speed, 12 poles | 35000 rpm.Standard version; 12-pole motor. |
| Standard-version speed, 14 poles | 30000 rpm.Standard version; 14-pole motor. |
| High-speed-version speed, 2 poles | 240000 rpm.High-speed version; 2-pole motor. |
| High-speed-version speed, 12 poles | 40000 rpm.High-speed version; 12-pole motor. |
| High-speed-version speed, 14 poles | 35000 rpm.High-speed version; 14-pole motor. |
| Synchronous freewheeling | Enabled.Default configuration. |
| Temperature monitoring | Dual temperature monitoring. |
| Power filtering components | Rubycon electrolytic capacitor plus high-capacity ceramic capacitors for power filtering. |
| Low-voltage protection | Low-voltage protection against battery overdischarge. |
| Startup protection | Limits starting current and automatically retries startup.Unsuccessful motor start. |
| Stall protection | Attempts to restart after a stall, generally caused by an external force.Motor stalls during normal operation; a stall at high throttle may damage the ESC. |
| Overtemperature protection | Gradually reduces maximum output power, potentially down to 40% of full-throttle power.Temperature exceeds 115°C; original power is restored after temperature falls. |
| Overload protection | Limits maximum throttle to protect the propulsion system.Excessive motor load is detected. |
| Signal-loss protection | Progressively reduces output power, rapidly brings throttle below 50% within 1–2 seconds, then slowly reduces throttle until shutdown.Signal has been lost for 200ms. |
| Control features | Startup algorithm intended for starts against headwinds, resistance to phase loss during abrupt throttle changes, fast throttle response and adaptive operating parameters. |
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