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| - | When a controller powers off, resets, or behaves erratically during relay operation, the cause is typically electrical noise generated by external relays, contactors, or solenoid loads rather than a product defect. | ||
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| - | These loads contain coils that generate high-voltage transients (back EMF or surge) when switched off, and the noise can enter the controller through the power line, causing CPU freezes, resets, communication loss, or unstable operation. | ||
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| - | This phenomenon can occur in any microcontroller-based system, including CUBLOC MSB, FADUINO, RCBOX, and MOACON. | ||
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| - | To prevent this issue, an RC snubber (spark killer) must be installed across the relay coil terminals to suppress electrical noise. | ||
| - | Without a snubber, repeated resets, program errors, reduced product lifespan, or even hardware damage may occur. | ||
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| - | If the system uses auxiliary relays, contactors, solenoid valves, AC motors, or other large inductive loads, installing a snubber is essential. | ||
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| - | The issue is considered an external wiring or noise environment problem rather than a controller hardware failure. | ||
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| ====== 릴레이 동작 시 기기가 꺼지거나 리셋됩니다 ====== | ====== 릴레이 동작 시 기기가 꺼지거나 리셋됩니다 ====== | ||