HIMA F4101模拟量输入模块
图29:20连接器可拆卸接线板，带系带着陆位置，注明PACSystems*RX3i系统手册第3节GFK-2314T 2019年9月安装49 2.6.4.7安装或拆卸20连接器接线板组件（有关安装或拆卸36针接线板组件的说明，请参阅第17章）。比较端子组件门上的标签上的模块目录号和侧面的标签，以确保它们匹配。如果接线端子板安装在错误的模块类型上，则系统通电时模块可能会损坏。警告：安装或拆卸接线板组件时，必须关闭现场电源。2.6.4.7.1安装接线端子（图30）：1。将接线板组件底部的枢轴钩插入模块底部的插槽中。2.向上转动接线盒组件，以接合连接器。3.朝模块方向按压接线板组件，直到释放杆闩锁卡入到位。检查以确保接线板牢固就位。1 2 3图30：将接线板安装到I/O模块PACSystems*RX3i系统手册第3节GFK-2314T 2019年9月安装50释放杆图31：从I/O模块上卸下前释放杆的使用2.6.4.7.2卸下接线板：1。打开接线盒门。2.向上推释放杆（图31）以解锁接线板。3.将接线板从模块上拉开，直到触点分离且底部枢轴钩脱离。PACSystems*RX3i系统手册第3节GFK-2314T 2019年9月安装51 2.6.4.8安装或拆除接线板盖可以拆除接线板组件盖，以便更容易接近端子。警告：即使背板电源已关闭，模块的螺丝端子上可能存在来自用户设备的潜在危险电压。处理模块的可拆卸接线板组件及其连接的任何电线时，请务必小心。REL EASE LEV ER图32：将接线板拔出或插入其盖子2.6.4.8.1从盖子上拆下接线板：1。抓住接线板盖的侧面。2.如图32所示，下拉接线板底部。2.6.4.8.2将接线板插入其盖中：要将接线板重新插入其盖：1。将接线板的顶部与盖子的底部对齐，确保接线板上的槽口与盖子上的凹槽对齐。2.向上滑动接线板（图32），直到其卡入到位。PACSystems*RX3i系统手册第3节GFK-2314T 2019年9月安装52 2.6.4.9与离散模块的正负逻辑连接PACSystems RX3i模块的正逻辑和负逻辑的IEC定义在以下章节中描述。2.6.4.9.1正逻辑正逻辑输入模块（图33）将电流从输入设备吸收到用户公共或负电源总线。输入装置连接在正电源总线和输入端子之间。正逻辑输出模块（图34）从用户公共或正电源总线向负载提供电流。负载连接在负电源总线和模块输出之间。0V IEC+24V SINK I N+图33：正逻辑输入电路0V+24V IEC SOURCE OUT+图34：正逻辑输出电路2.6.4.9.2负逻辑负逻辑输入模块（图35）通过输入设备向用户公共或正电源总线提供电流。输入设备连接在负电源总线和输入端子之间。负逻辑输出模块（图36）将电流从负载吸收到用户公共或负电源总线。负载连接在正电源总线和输出端子之间。PACSystems*RX3i系统手册第3节GFK-2314T 2019年9月安装53 0V+24V IEC SOURCE I N+图35：负逻辑输入电路+0V IEC+24V SINK OUT图36：负逻辑输出电路PACSystems*RX3i系统说明书第3节GFK-2314T2019年9月份安装54 2.6.4.10模拟模块扭曲接线，强烈建议将屏蔽仪表电缆用于模拟模块输入或输出信号连接。屏蔽的正确接地也很重要。最大电气噪音
Figure 29: 20 Connector detachable terminal block, landing position with tether, indicating PACSystems * RX3i system manual section 3 GFK-2314T installation in September 2019 49 2.6.4.7 Installation or removal of 20-connector terminal block assembly (see Chapter 17 for instructions on installation or removal of 36-pin terminal block assembly). Compare the module catalog number on the label on the terminal assembly door with the label on the side to ensure that they match. If the terminal block is installed on the wrong module type, the module may be damaged when the system is powered on. Warning: When installing or removing the terminal block assembly, the field power must be turned off. 2.6.4.7.1 Install wiring terminals (Figure 30): 1. Insert the pivot hook at the bottom of the terminal block assembly into the slot at the bottom of the module. 2. Turn the junction box assembly upwards to engage the connector. 3. Press the terminal block assembly toward the module until the release lever latch clicks into place. Check to ensure that the terminal block is firmly seated. 1 2 3 Figure 30: Installing the wiring board to the I/O module PACSystems * RX3i System Manual Section 3 GFK-2314T Installing the 50 release lever in September 2019 Figure 31: Removing the front release lever from the I/O module Use 2.6.4.7.2 Removing the wiring board: 1. Open the junction box door. 2. Push up the release lever (Figure 31) to unlock the terminal block. 3. Pull the terminal block away from the module until the contact is separated and the bottom pivot hook is disengaged. PACSystems * RX3i System Manual, Section 3, GFK-2314T, installed in September 2019, 51 2.6.4.8 Installing or removing the terminal block cover can remove the terminal block assembly cover to make it easier to access the terminals. Warning: Even if the backplane power is turned off, there may be potentially dangerous voltage from the user's equipment on the screw terminals of the module. Be careful when handling the removable terminal block assembly of the module and any wires connected to it. REL EASE LEV ER Figure 32: Pull out or insert the terminal block into its cover 2.6.4.8.1 Remove the terminal block from the cover: 1. Grasp the side of the terminal block cover. 2. As shown in Figure 32, pull down the bottom of the terminal block. 2.6.4.8.2 Insert the terminal block into its cover: insert the terminal block into its cover again: 1. Align the top of the terminal block with the bottom of the cover, and ensure that the notch on the terminal block is aligned with the groove on the cover. 2. Slide the terminal block up (Figure 32) until it clicks into place. PACSystems * RX3i System Manual, Section 3, GFK-2314T, installed in September 2019, 52 2.6.4.9 Positive and negative logic connection with discrete module. IEC definitions of positive logic and negative logic of PACSystems RX3i module are described in the following chapters. 2.6.4.9.1 Positive logic positive logic input module (Figure 33) absorbs current from input device to user common or negative power bus. The input device is connected between the positive power bus and the input terminal. The positive logic output module (Figure 34) provides current to the load from the user common or positive power bus. The load is connected between the negative power bus and the module output. 0V IEC+24V SINK I N+Figure 33: Positive logic input circuit 0V+24V IEC SOURCE OUT+Figure 34: Positive logic output circuit 2.6.4.9.2 Negative logic negative logic input module (Figure 35) provides current to user public or positive power bus through input device. The input device is connected between the negative power bus and the input terminal. The negative logic output module (Figure 36) absorbs the current from the load to the user common or negative power bus. The load is connected between the positive power bus and the output terminal. PACSystems * RX3i System Manual, Section 3, GFK-2314T, installed in September 2019, 53 0V+24V IEC SOURCE I N+Figure 35: Negative logic input circuit+0V IEC+24V SINK OUT Figure 36: Negative logic output circuit PACSystems * RX3i System Manual, Section 3, GFK-2314T, installed in September 2019, 54 2.6.4.10 analog module twisted wiring, it is strongly recommended to use shielded instrument cable for analog module input or output signal connection. Proper grounding of the shield is also important. Maximum electrical noise
