产品细节介绍
140DRA84000继电器输出模块
模块安装单元已经安装在系统机柜并准备就绪。电源和过程控制模块以及接线和电缆连接通常完整的。本节介绍跳线的选择控制通道和模块总线分段，并提供了一个示意图，显示了与安装件之间的电缆连接单元本节还包含处理器总线适配器（PBA）支架安装程序和图表带有安装单元底板连接器引脚分配。
此信息在需要维修或更换时提供。
工具模块安装单元需要以下工具
安装和连接：•电缆插入器，用于安装和拆卸电源、PFI和模块状态信号的两根五芯扁平电缆底板上（Elsag Bailey零件参考表5-3编号）。
注：如果使用单独的电线连接电源、PFI和模块状态（图3-2）。
•16英寸十字螺丝刀。
•12英寸一字螺丝刀。
控制通道和模块总线分段安装单元底板电路板上的跳线J1至J4分割控制通道或模块总线信号。高达可以创建三个段。J1和J4控制总线B，同时J2和J3控制总线A。跳线设置为2至3时，信号继续穿过底板。跳线设置为1到2，信号断开并连接到单独的上拉电路。跳线位置见图3-1，表3-1跳线设置。
模块安装单元安装在机柜安装架上轨道，使用四个10-32夹紧螺母和四个10-32x0.5英寸螺钉。
卡底盘部分上的开槽法兰安装单元用于安装。
机柜后部的IEMMU11和IEMMU21安装架以及机柜前部的IEMMU 12和IEMMU 22安装架内阁。
IEMMU11和IEMMU21安装单元提供物理最多可安装12个系统模块或10个系统模块以及最多两个电源模块。
IEMMU12和IEMMU22安装单元提供最多12个系统模块。安装IEMMU11、IEMMU12、IEMMU 21或将IEMMU22安装到使用IEMMU01的机柜中或IEMMU02安装单元，则需要一个过渡板不同安装单元之间的I/O扩展器总线连接（例如，连接到IEMMU01单元的IEMMU22单元）。
1.过渡板安装在IEMMU11上，IEMMU12、IEMMU21或IEMMU22安装单元底板。
小心地打开连接器（P58或P60）上的凸耳将过渡板安装在连接器的引脚上，并按压到位。小心不要损坏销。
注意：过渡板组件必须安装在左侧安装单元的连接器插座（从后面看）背板、连接器P58或P60。
2.将连接器上的两个凸耳挤在一起，以锁定过渡板就位。
Normally the module mounting unit
is already installed in the system cabinet and ready for service. Power and process control modules and the wiring and cable connections are usually completed. This section describes the jumper selections for Controlway and module bus segmenting and provides an illustration showing cable connections to and from the mounting unit. This section also contains the processor bus adapter (PBA) bracket installation procedure and tables and figures with the mounting unit backplane connector pin assignments. This information is provided in the event that repair or replacement is required. TOOLS The following tools are needed for module mounting unit installation and connection: • Cable inserter for installing and removing the two five-conductor flat cables for power, PFI, and module status signals on the backplane (refer to Table 5-3 for Elsag Bailey part number). NOTE: The cable inserter is not needed if using individual wires for connecting power, PFI, and module status (Fig. 3-2). • 16-inch Phillips-head screwdriver. • 12-inch flatblade screwdriver. CONTROLWAY AND MODULE BUS SEGMENTING Jumpers J1 through J4 on the mounting unit backplane circuit board split the Controlway or module bus signal. Up to three segments can be created. J1 and J4 control bus B while J2 and J3 control bus A. With the jumpers set 2 to 3, the signal continues across the backplane. With the jumpers set 1 to 2, the signal is broken and connected to a separate pull-up circuit. Refer to Figure 3-1 for jumper locations and to Table 3-1 for jumper settings.
The module mounting unit
is mounted to the cabinet mounting rails using four 10-32 clip nuts and four 10-32 × 0.5-inch screws. Notched flanges on the card chassis portion of the mounting unit are used for mounting. The IEMMU11 and IEMMU21 mount from the rear of the cabinet and the IEMMU12 and IEMMU22 mount from the front of the cabinet. The IEMMU11 and IEMMU21 mounting units provide physical mounting for up to 12 system modules, or ten system modules and a maximum of two power modules. The IEMMU12 and IEMMU22 mounting units provide physical mounting for up to 12 system modules.
When installing an IEMMU11, IEMMU12, IEMMU21, or IEMMU22 mounting unit into a cabinet that is using IEMMU01 or IEMMU02 mounting units, a transition board is required for the I/O expander bus connection between the different mounting units (e.g., IEMMU22 unit connected to an IEMMU01 unit). 1. The transition board is installed on the IEMMU11, IEMMU12, IEMMU21, or IEMMU22 mounting unit backplane. With the tabs on the connector (P58 or P60) open, carefully install the transition board on the pins of the connector and press into position. Be careful not to damage the pins. NOTE: Transition board assembly must be installed in the left-hand connector socket (as viewed from the rear) of the mounting unit backplane, connector P58 or P60. 2. Squeeze the two tabs on the connector together to lock the transition board in position.
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