（求助）看图说CVR的工作原理

god123 · 发表于 2016-1-30 12:40:05

Screen Shot 2016-01-30 at 12.22.25 PM.png

Screen Shot 2016-01-30 at 12.33.45 PM.png

手册上是这样说的。
(1) RCDR/GND CTL pushbutton switch - ON legend on With both engines stopped, a ground signal is sent to the relay 12TU. When you push the RCDR/GND CTL pushbutton switch 11TU, the relay 12TU is supplied with 28VDC through the contacts of the relay 13TU. The relay 12TU is energized. A ground signal is sent to the blue ON legend which comes on. Because a ground signal is also sent to the relay 6RK, the CVR is set to the recording mode. When you release the RCDR/GND CTL pushbutton switch, the relay 13TU is supplied with 28VDC through the relay 12TU.
(2) RCDR/GND CTL pushbutton switch - ON legend off When you push the RCDR/GND CTL pushbutton switch 11TU again, the relay 13TU is de-energized. The relay 12TU stays energized through the contacts of the relay 13TU. A ground signal continues to be applied to the blue ON legend which stays on. Because a ground signal is also sent to the relay 6RK, the CVR is set to the recording mode. When you release the RCDR/GND CTL pushbutton switch 11TU, the contact opens and de-energizes the relay 12TU. The blue ON legend goes off, the relay 6RK is de-energized and the CVR stops the recording. NOTE: If one engine is started, the ground signal to relay 12TU is removed and the relay 12TU is de-energized. The blue ON legend goes off and the relay 6RK is de-energized. The CVR stays in recording mode through the normally-closed contact of the relay 8RK.

看到第一条，12TU是由13TU的触点来给提供28VDC的，但是如果13TU有电的话，13TU的触点就被吸下来了，所以12TU就断电了。。。整体给人一种图文不符的感觉，求大神解救。

lty011218 · 发表于 2016-2-1 23:26:16

学习各位大神了

Michael1984 · 发表于 2016-3-25 21:52:50

Michael1984 · 发表于 2016-3-25 21:55:24

第一条是没有问题的，当你释放电门以后，28VDC经过12TU的中间触点、11TU触点、二极管给12TU供电，此时不经过13TU的触点

kfsfu · 发表于 2016-3-27 16:18:20

http://bbs.airacm.com/read/291520/可以看下

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[23通信] （求助）看图说CVR的工作原理

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