Reasonable thermal structure designs, comprehensive and reliable hardware protection measures, with a power soft-start function and functions of software self-diagnostics and fault output latch.

散热结构设计合理，硬件保护措施可靠完善，具有电源软启动功能，软件对故障进行自诊断以及输出闭锁等功能。

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4 soft start preheating and desiccant function, automatically adjust the output power to prevent instant start, extend the life of the heater.

软启动预热除湿功能，开机时自动调整输出功率防止瞬间启动，延长加热器的寿命。

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The paper introduces the circuit design and its function used for water supply of residential zone by adopting TD2100 converter to control four pumpers with circulation soft start.

介绍了利用TD 2 10 0变频器控制四台泵循环软起动，实现小区供水的电路设计及控制功能。

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