DSRF150 工业控制装置
输入模块的输入和输入电路
介绍数字输入模块的输入和输入电路、控制逻辑、逻辑电源和连接。DSI是多功能处理器（MFP）、多功能控制器（MFC）或逻辑主模块（LMM）的数字输入接口。这些控制模块提供控制功能。控制模块通过I/O扩展器总线与其I/O模块通信，如图1-1所示。I/O扩展机总线上的每个I/O模块都有一个由地址双列直插开关S1（图2-1）设置的唯一地址。输入数字现场输入为24 VDC、48 VDC、125 VDC或120 VAC rms的电压。这些电压表示现场设备通电（ON）；0伏输入表示现场设备断电（OFF）。DSI有一个用于DC输入的固定输入反跳滤波器，以允许接触反跳时间（17毫秒响应时间）。
数字输入高阻抗
IMDSI13（+24 VDC）模块和IMDSI14（+48 VDC）模块具有固定配置，不需要任何跳线选择。IMDSI15（+125 VDC/120 VAC）模块具有跳线，可选择直流或交流模式。IMDSI12（+24、+48、+125 VDC或120 VAC）模块具有用于选择直流或交流模式的跳线和用于选择工作电压的跳线。有关跨接连接的说明，请参阅安装部分。注意：由于P3连接器上的针脚数量，12个输入是分开的，而其余两对共用输入端子。每组中，将点7和点8的正（+）侧绑在一起（参见表5-3）。这些点必须使用由IMDSI12模块上的跳线设置的相同接触电压（24 VDC、48 VDC、125 VDC或120 VAC），或根据相关IMDSI1模块的工作电压。输入电路图2-1是说明通过模块的信号流的框图。输入隔离块由电流限制器和光耦合器组成，用于将16个场输入与模块电路隔离。输入电路在输入和逻辑电路以及其他输入通道之间提供1500 VDC隔离。参考表1-5。数字输入高阻抗提供额外的（无源）保护，防止现场数字输入的高能瞬变。
Input and input circuit of input module
The input and input circuit, control logic, logic power supply and connection of digital input module are introduced. DSI is a digital input interface for a multi-function processor (MFP), multi-function controller (MFC), or logic master module (LMM). These control modules provide control functions. The control module communicates with its I/O module through the I/O expander bus, as shown in Figure 1-1. Each I/O module on the I/O expander bus has a unique address set by the address dipswitch S1 (Figure 2-1). The input digital field input is 24 VDC, 48 VDC, 125 VDC, or 120 VAC rms. These voltages indicate that the field equipment is energized (ON); The 0 volt input indicates that the field device is OFF. DSI has a fixed input bounce filter for DC input to allow contact bounce time (17 ms response time).
Digital input high impedance
The IMDSI13 (+24 VDC) module and the IMDSI14 (+48 VDC) module have fixed configurations and do not require any jumper selection. The IMDSI15 (+125 VDC/120 VAC) module has jumpers that allow you to select either DC or AC mode. The IMDSI12 (+24,+48,+125 VDC or 120 VAC) module has jumpers for selecting DC or AC modes and jumpers for selecting operating voltages. For instructions on jumper connections, refer to the Installation section. Note: Due to the number of pins on P3 connector, 12 inputs are separated, while the other two pairs share input terminals. In each group, tie the positive (+) side of point 7 and point 8 together (see Table 5-3). These points must use the same contact voltage (24 VDC, 48 VDC, 125 VDC or 120 VAC) set by the jumper on the IMDSI12 module, or according to the operating voltage of the relevant IMDSI1 module. The input circuit diagram 2-1 is a block diagram illustrating the signal flow through the module. The input isolation block is composed of current limiter and optical coupler, which is used to isolate 16 field inputs from the module circuit. The input circuits provide 1500 VDC isolation between the input and logic circuits and other input channels. Refer to Table 1-5. Digital input high impedance provides additional (passive) protection against high energy transients of field digital inputs.
