Product overview
The CKESC ROCK 150A 18S from Nanchang ChangKong Technology is an electronic speed controller for UAV brushless propulsion systems. Its electrical integration range is 6~18S, with a 150A maximum operating current for three seconds and a 70A continuous rating under specified cooling. The controller weighs 269g including wiring. Its hardware incorporates shielded signal wires and optically isolated signal input/output interfaces, while motor rotation direction can be configured through software.
The default configuration supports PWM or CAN control and includes data storage. Color-coded connections provide CAN_H, CAN_L, PWM/TTL-RX and an isolated reference ground; separate three-wire UART-TTL output carries operating data at 38400bps. PWM throttle travel requires calibration before first use or after changing the signal transmitter. Protection functions address startup failure, excessive voltage, current, load, temperature and signal loss. Low-voltage protection is disabled by default and requires customization to enable. Cooling remains essential, and a motor stall at high throttle can damage the controller.
Specifications
| Specification | Value & conditions |
|---|---|
| Model | CKESC ROCK 150A 18S |
| Rated specification | 150A, 6~18S |
| Weight | 269gIncluding wiring. |
| Continuous operating current | 70AWith specified cooling. |
| Maximum operating current | 150AFor 3 seconds. |
| Throttle travel range | 1000~2000us |
| Throttle refresh rate | 50~500Hz; recommended 100~400Hz |
| BEC | None |
| Temperature protection point | 120°C |
| Communication and storage | PWM+CAN, with data storage |
| Input signal level | 3.3~5V |
| Signal wiring |
|
| White-wire PWM input | 1000-2000us, 50-400Hz, 3.3-5V signal levelPWM reception through the white PWM/TTL-RX wire; pulse range is calibratable. |
| Signal isolation and shielding | Shielded signal wiring and optically isolated signal input/output interfaces |
| Rotation direction | Software configurable |
| Low-voltage protection | Disabled by default; can be enabled through customizationDefault configuration; enabling protection requires customization. |
| High-voltage protection | Prevents motor startupSupply voltage exceeds the permitted value. |
| Startup protection | Limits startup current and automatically retries startupMotor startup is unsuccessful. |
| Stall protection | Attempts to restart the motorMotor 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 powerTemperature exceeds 120°C; original power is restored after temperature falls. |
| Overcurrent protection | Limits peak current to the limiting value |
| Overload protection | Limits maximum throttle to protect the propulsion systemExcessive motor load is detected. |
| Signal-loss protection | Progressively reduces output power, rapidly lowers throttle below 50% within 1~2 seconds, then slowly reduces throttle until shutdownControl signal has been lost for 200ms. |
| Data output interface | Three-wire UART-TTL, 38400bps, character-based output |
| Motor speed telemetry | RPM; error ±12RPMCalculated using a 42P motor pole count. |
| ESC temperature telemetry | °C; error ±1°C |
| Motor temperature telemetry | °C; error ±1°CReserved data. |
| Motor current telemetry | ×0.01A; error ±10%Primarily used for ESC overcurrent protection. |
| Supply voltage telemetry | ×0.01V; error ±0.5V |
| Default control configuration and calibration | Default PWM+CAN configuration supports either PWM or CAN control; PWM throttle travel calibration is requiredPWM control in the default PWM+CAN mode; before first use or changing the throttle-signal transmitter. |
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