136703-01 BENTLY

BENTLY 330180-51-00
BENTLY 330130-040-00-CN
BENTLY 330130-035-00-CN
BENTLY 330103-00-05-10-02-00
BENTLY 330106-05-30-10-02-00
BENTLY 3500/42-01-00

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Description

这两个控制线路的控制功能完全一样,按下起动按钮,输出动作;按下停止按钮,输出断开;但它们的可靠性不一样。我们假设输出断开为安全状态,那么图3的可靠性要比图2的高。这是因为SB1SB2都有发生故障的可能,而最常见的现象是输入电路开路。

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