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140DDO35300離散量輸出模塊
IEMMU11、IEMMU12、IEMMU21和IEMMU22是模塊安裝單元，用于安裝標(biāo)準(zhǔn)INFI 90 OPEN系統(tǒng)模塊和BRC-100 Harmony Bridge控制器系統(tǒng)機(jī)柜中的Symphony系統(tǒng)模塊。
注：IEMMU11、IEMMU12、IEMMU21和IEMMU22模塊安裝單元可用作IEMMU01和IEMMU02模塊安裝單元。它們也可以一起安裝帶IEMMU01和IEMMU02裝置；然而，過(guò)渡板IEMMU11、IEMMU12、IEMMU21或IEMMU22裝置和IEMMU01或IEMMU02裝置。模塊安裝單元由一個(gè)金屬板卡底盤(pán)和一個(gè)印刷電路板背板組件組成。開(kāi)放頂部和底部結(jié)構(gòu)允許空氣流過(guò)模塊。安裝法蘭用于安裝安裝裝置在標(biāo)準(zhǔn)Elsag Bailey 483毫米（19英寸）機(jī)柜中。模塊可以快速方便地安裝和拆卸。這個(gè)模塊由卡導(dǎo)軌固定到位，連接器位于底板和模塊的前面板，外加緊固件閂鎖。
底板是多層印刷電路板組件包含電子元件、數(shù)據(jù)量探測(cè)插座、連接器和跳線。在大多數(shù)情況下，安裝單元提供直接將I/O電纜耦合至模塊。這方面的例外當(dāng)BRC-100 Harmony Bridge控制器模塊安裝在MMU中。
參見(jiàn)處理器總線適配器第3節(jié)中的支架安裝，以了解更多說(shuō)明。
模塊安裝單元IEMMU11和IEMMU12模塊安裝單元提供最多12個(gè)系統(tǒng)模塊或10個(gè)系統(tǒng)的物理安裝模塊和最多兩個(gè)IEPAS02、IEPDS01/02、IEPAF02和IEPDF01/02電源模塊。他們還提供I/O擴(kuò)展器總線、模塊總線和控制通道信號(hào)；穩(wěn)壓電源的分配電壓（+5伏、+15伏、-15伏和24伏）；以及一次電源的分配。
主電源為120/240 VAC或24/48 VDC，為電源模塊（IEPAS02、IEPAF02、IEPDS01、，IEPDF01、IEPDS02和IEPDF02），可安裝在安裝單元中。通常，使用IEPMU01/02的系統(tǒng)不要對(duì)安裝單元使用分布式主電源。使用模塊化電源系統(tǒng)II的系統(tǒng)不允許向安裝單元提供分布式主電源。當(dāng)機(jī)柜配置需要一個(gè)帶有主機(jī)箱的后裝機(jī)箱配電。
當(dāng)機(jī)柜配置需要一個(gè)帶有主機(jī)箱的前裝機(jī)箱配電。
IEMMU21和IEMMU22模塊安裝單元提供最多12個(gè)系統(tǒng)模塊的物理安裝；提供I/O擴(kuò)展器總線、模塊總線和控制通道信號(hào)的配電；以及穩(wěn)壓電源的分配電壓（+5 V、+15 V和-15 V）。IEMMU21/22模塊安裝單元是與模塊化一起使用的首選電力系統(tǒng)II。
當(dāng)機(jī)柜配置要求后裝式機(jī)箱沒(méi)有主機(jī)箱配電。
當(dāng)機(jī)柜配置需要無(wú)主電源的前安裝機(jī)箱時(shí)，使用IEMMU22安裝單元分配
OVERVIEW
The IEMMU11, IEMMU12, IEMMU21, and IEMMU22 are module mounting units used to house standard INFI 90 OPEN system modules and the BRC-100 Harmony Bridge Controller module of the Symphony system in system cabinets. NOTE: IEMMU11, IEMMU12, IEMMU21, and IEMMU22 Module Mounting Units can be used as replacements for IEMMU01 and IEMMU02 Module Mounting Units. They can also be installed along with IEMMU01 and IEMMU02 units; however, transition board assemblies are required for interconnection between IEMMU11, IEMMU12, IEMMU21, or IEMMU22 units and IEMMU01 or IEMMU02 units. The module mounting unit consists of a sheet metal card chassis and a printed circuit board backplane assembly. The open top and bottom structure allow air to flow over the modules. Mounting flanges are provided for mounting the mounting unit in a standard Elsag Bailey 483-millimeter (19-inch) cabinet. Modules can be installed and removed quickly and easily. The module is held in position by card guides, the connectors on the backplane, and the module’s front panel, captive fastening latches. The backplane is a multilayer printed circuit board assembly containing electronic components, dipshunt sockets, connectors, and jumpers. In most cases, the mounting unit provides direct I/O cable coupling to the modules. The exception to this is when a BRC-100 Harmony Bridge Controller module is installed in the MMU. Refer to PROCESSOR BUS ADAPTER BRACKETS INSTALLATION in Section 3 for further explanation.
Module Mounting Units
The IEMMU11 and IEMMU12 module mounting units provide physical mounting for up to 12 system modules or ten system modules and a maximum of two IEPAS02, IEPDS01/02, IEPAF02, and IEPDF01/02 power modules. They also provide electrical distribution of I/O expander bus, module bus, and Controlway signals; distribution of regulated power supply voltages (+5 volts, +15 volts, –15 volts and 24 volts); and distribution of primary power. Primary power is the 120/240 VAC or 24/48 VDC that supplies power to power modules (IEPAS02, IEPAF02, IEPDS01, IEPDF01, IEPDS02 and IEPDF02) that can be mounted in the mounting units. Typically, systems that use IEPMU01/02 do not use distributed primary power to the mounting units. Systems that use Modular Power System II do not allow distributed primary power to the mounting units. The IEMMU11 module mounting unit is used when the cabinet configuration requires a rear mount chassis with primary power distribution. The IEMMU12 module mounting unit is used when the cabinet configuration requires a front mount chassis with primary power distribution.
The IEMMU21 and IEMMU22 module mounting units provide physical mounting for up to 12 system modules; provide electrical distribution of I/O expander bus, module bus, and Controlway signals; and distribution of regulated power supply voltages (+5 V, +15 V, and –15 V). The IEMMU21/22 module mounting units are the preferred choice for use with Modular Power System II. The IEMMU21 module mounting unit is used when the cabinet configuration requires a rear mount chassis with no primary power distribution. The IEMMU22 mounting unit is used when the cabinet configuration requires a front mount chassis with no primary power distribution.
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