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PLC控制柜指成套的控制柜,可实现电机,开关的控制的电气柜。 PLC控制柜组成部分一般有: 1：空开：一个总的空气开关，这个是整个柜体的电源控制。相信每个柜子都必须要有的一个东西。 2：PLC：这个要根据工程需要选择。打个比方如果工程小可以直接就是一个一体化的PLC 但如果工程比较大 可能就需要模块、卡件式的，同时还可能需要冗余（也就是两套交替使用）。 3：24VDC的电源：一个24VDC的开关电源，大多数的PLC都是自带24VDC的电源，根据是否确实需要来定是否要这个开关电源。 4：继电器：一般PLC是可以直接将指令发到控制回路里，但也可能先由继电器中转。打个比方，如果你PLC的输出口带电是24VDC的，但是你的控制回路里画的图 需要PLC供的节点却是220VAC的，那么你就必须在PLC输出口加上一个继电器，即指令发出时 继电器动作，但后让控制回路的节点接到继电器的常开或常闭点上。也是根据情况选择是否使用继电器。 5：接线端子：这个肯定是每个柜子都必不可少的东西 根据信号数量可以配置。如果只是一个单纯的PLC控制柜 基本就是需要这些玩意，如果你的控制柜内还需要有其他的东西 就看情况增加。比方说你有可能要对某些现场的仪表或者小控制箱供电，可能你就得要增加空开数量。或者你要PLC接至上位机，可能就需要增加交换机什么的。视情况而定。

PLC control cabinet refers to a complete set of control cabinet, which can realize electric cabinet with control of motor and switch. Part of the general PLC control cabinet: 1: air: a total air switch, this is the power of the control cabinet. I believe that every cabinet must have something to have. 2:PLC: This is to be selected according to the needs of the project. For example, if a project is small, it can directly be an integrated PLC, but if the project is relatively large, it may need modules and card parts, and at the same time, it may also need redundancy (that is, two sets of alternate uses). The power of 3:24VDC is a 24VDC switching power supply. Most PLC are equipped with 24VDC power supply, depending on whether they really need to decide whether to switch the power supply. 4: Relay: the general PLC can directly send instructions to the control loop, but it may also be transferred to the relay first. For example, if the output of your PLC 24VDC is charged, but the control loop in your drawing to PLC for the node is 220VAC, then you must add a relay in the PLC output port, the relay command is issued, but let the node receiving the relay control circuit the normally closed or open point. It is also based on the situation to choose whether or not to use the relay. 5: Terminal: this must be necessary for each cabinet to be configured according to the number of signals. If only a simple PLC control cabinet is basically the need for these things, if there is something else in your control cabinet, it will increase. For example, you may have to live on some instruments or small power supply control box, then you may need to increase the number of open space. Or if you want PLC to be connected to the upper computer, you may need to add something to the switch. Depending on the situation.