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Changes for page 01 Precaution

Last modified by Joe on 2025/03/11 17:58
From version 62.1
edited by Mora Zhou
on 2023/12/22 10:47
Change comment: There is no comment for this version
To version 64.1
edited by Joe
on 2025/03/11 17:58
Change comment: There is no comment for this version

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1 -XWiki.Mora
1 +XWiki.joe
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7 7  Make sure to have the following safety circuits outside of the PLC to ensure safe system operation even during external power supply problems or PLC failure.
8 8  
9 9  1. An emergency stop circuit, a protection circuit, an interlock circuit for opposite movements, and an interlock circuit (to prevent damage to the equipment at the upper and lower positioning limits).
10 -1. Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all outputs are turned off. Also, when an error that couldnot be detected by the PLC CPU occurs in an input/output control block, output control may be disabled. External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
10 +1. Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all outputs are turned off. Also, when an error that could not be detected by the PLC CPU occurs in an input/output control block, output control may be disabled. External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
11 11  1. Note that when an error occurs in a relay or transistor output device, the output could be held either on or off. For output signals that may lead to serious accidents, external circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
12 12  
13 13  = Installation =
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177 177  (% style="text-align:center" %)
178 178  [[image:1622440579389-255.png||height="681" width="900" class="img-thumbnail"]]
179 179  
180 +(% class="box infomessage" %)
181 +(((
182 +Note: The input loop in the figure is NPN connection. If S/S is connected to the 24V negative electrode and X is connected to the positive electrode, it  is PNP connection.
183 +)))
184 +
180 180  **LX3V-2416MT-D wiring demo**
181 181  
182 182  (% style="text-align:center" %)