140CPU67160S 安全型PLC安装热备CPU模块 Schneider
2.将通信接口安装在CEX总线左侧
处理器单元。如果使用BC810，则段的配置应为
考虑过的。如果不使用BC810，则可以在
以任何优选方式提供两个CPU。
3.轻轻地将单元压在一起，确保CEX总线正确
通过单元上的连接器连接。
4.如果使用BC810，则将TK851电缆连接到两个BC810。如果使用了BC810
不使用时，将CEX总线延长电缆TK850安装到远的单元
远离处理器单元，或者如果没有安装单元，则直接连接到处理器单元上的CEXBus。CEX总线延长电缆必须连接到：
两个CPU，无论是否有任何其他CEX总线单元（图29
99页）。
5.连接RCU数据链路电缆（TK855）和RCU控制链路电缆
（TK856）连接到两个CPU。
RCU数据链路电缆（TK855）和RCU控制链路电缆（DK856）
不得用类似电缆代替。使用其他电缆将禁用
控制构建器和操作员站中CPU的标识。
CPU连接到RCU控制链路电缆（TK856）连接器，标记为
“上限”将在控件生成器和运算符中定义为“上限”
火车站标记与CPU的物理位置无关。
任何CPU都可以成为主CPU。提供电源和网络连接：
a、 将电源线连接到两个CPU的螺钉端子L+和L-，以及
来自SS8xx的电源监控信号发送到螺钉端子SA和SB。
b、 将控制网络电缆连接至CN1（单总线连接），或
CN1+CN2（冗余总线连接）。控制网络是
连接到两个CPU。
c、 使用主电源的电缆TK212将控制生成器连接到COM4
CPU（如果需要更改IP地址等）。否则，连接
控制网络的控制生成器。
7.将光学模块总线连接到处理器单元上的光学触点
（参见36页图2和140页图45）。关于
S800 I/O中提供了光缆选择和电缆长度
文档
8.通过将CPU连接到外部SB822电池提供电池备用
单位。按照安装SB822中的说明进行安装
152页的可充电外部电池单元。
两个CPU应由同一电源供电（单个或冗余）。对于
冗余电源，参见148页图51。
光学模块总线的连接与处理器单元的连接相同
对于S800 I/O中的FCI（169页图60）。
在冗余配置中安装PM891处理器单元2节：安装
102 3BSE036351-600 A
通信端口
与单一配置相同（见94页表8和95页表9）。
图30.PM891冗余配置示例
2节安装：安装不带BC810/BC820的CEX总线
3BSE036351-600 A 103
安装不带BC810/BC820的CEX总线
CEX总线，用于将通信接口连接到处理器
单元位于处理器单元基板（TP830）的左侧。
总线终端装置必须始终安装在CEX总线上的后一个装置上，如
如86页图25所示。TB850公CEX总线终端单元为
随每个PM8xx/TP830处理器单元提供。
但是，如果配置需要使用TK850延长电缆，如
如87页图26所示，TB851母CEX总线终端单元为
需要，并且必须安装到顺序中的后一个底板上。TB851女性
每个TK850延长电缆均配有CEX总线终端装置。
TK850 CEX总线延长电缆
任何一条CEX总线中只能使用一条TK850 CEX总线延长电缆。
电缆长度：0.7米（2.3英尺）。
安装CEX总线互连单元BC810/TP857
BC810单元必须直接安装到处理器单元上的CEX总线
底板。SM81x（如果使用）和通信接口安装到
BC810上的CEX总线，每端均端接TB850公CEX总线
终端单元。两个BC810通过互连电缆连接
TK851。
连接到BC810的CEX总线单元的大数量为六个。这个
BC810的主要功能是将CEX总线划分为两个物理上独立的总线
增加系统可用性的段，一个段上出现故障的CEX总线单元
不会影响处理器单元或其他CEX总线段。也是
重要注意：当使用BC810和冗余CEX总线时
单元：这些单元应安装在不同的BC810 CEX总线段上 140CPU67160S 安全型PLC安装热备CPU模块 Schneider
 140CPU67160S 安全型PLC安装热备CPU模块 Schneider
2. Mount the communication interfaces on the CEX-Bus to the left of the
processor unit. If BC810 are used, the configuration of the segments should be
considered. If BC810 are not used, the interfaces can be divided between the
two CPUs in any preferred way.
3. Press the units gently together and ensure that the CEX-Bus is correctly
connected, through the connector on the unit.
4. If BC810 are used, connect the TK851 cable to the two BC810. If BC810 are
not used, mount the CEX-Bus extension cable TK850 to the units at farthest
away from the processor units or, if no units are mounted, directly to the CEXBus on the processor unit. The CEX-Bus extension cable must be connected to
both CPUs whether or not there are any other CEX-Bus units (Figure 29 on
page 99).
5. Connect the RCU Data Link Cable (TK855) and the RCU Control Link Cable
(TK856) to both CPUs.
The RCU Data Link Cable (TK855) and the RCU Control Link Cable (TK856)
must not be replaced by similar cables. Using another cable will disable the
identification of the CPUs in the Control Builder and Operator Station.
The CPU connected to the RCU Control Link Cable (TK856) connector marked
“UPPER” will be defined as “UPPER” in the Control Builder and Operator
Station. The marking has no relevance to the physical placement of the CPUs.
Any CPU can become the Primary CPU. Provide connections for power supply and network:
a. Connect the power leads to screw terminals L+ and L- of both CPUs, and
the power supervision signals from SS8xx to screw terminals SA and SB.
b. Connect the Control Network cables to CN1 (single bus connection) or
CN1 + CN2 (redundant bus connection). The Control Network is
connected to both CPUs.
c. Connect the Control Builder to COM4 with cable TK212 of the Primary
CPU (if required for changing an IP address etc.). Otherwise connect the
Control Builder to the Control Network.
7. Connect the optical ModuleBus to the optical contacts on the processor units
(see Figure 2 on page 36 and Figure 45 on page 140). Information regarding
optical cable selection and cable length is provided in the S800 I/O
documentation.
8. Provide battery backup by connecting the CPUs to the external SB822 battery
units. Install them according to the instructions in Installing the SB822
Rechargeable External Battery Unit on page 152.
Both CPUs should be powered from the same supply (single or redundant). For
redundant power supply, see Figure 51 on page 148.
Connection to the optical ModuleBus is identical to that for the processor unit
and for the FCI in S800 I/O (Figure 60 on page 169).
Installing the PM891 Processor Unit in Redundant Configuration Section 2 Installation
102 3BSE036351-600 A
Communication Ports
Same as for single configuration (see Table 8 on page 94 and Table 9 on page 95).
Figure 30. Example of PM891-Redundant configuration
Section 2 Installation Installing the CEX-Bus without BC810/BC820
3BSE036351-600 A 103
Installing the CEX-Bus without BC810/BC820
The CEX-Bus, used for connection of communication interfaces to the processor
unit, is located on the left-hand side of the processor unit baseplate (TP830).
A bus termination unit must always be fitted to the last unit on the CEX-Bus, as
shown in Figure 25 on page 86. A TB850 male CEX-Bus termination unit is
supplied with each PM8xx/TP830 processor unit.
However, should the configuration require the use of a TK850 extension cable, as
shown in Figure 26 on page 87, then a TB851 female CEX-Bus termination unit is
required and must be fitted to the last baseplate in the sequence. A TB851 female
CEX-Bus termination unit is supplied with each TK850 extension cable.
TK850 CEX-Bus Extension Cable
Only one TK850 CEX-Bus extension cable may be used in any one CEX-Bus.
Cable length: 0.7 m (2.3 ft).
Installing the CEX-Bus Interconnection Unit BC810/TP857
The BC810 units must be mounted directly to the CEX-Bus on the processor unit
base plate. The SM81x, if used, and communication interfaces are then mounted to
the CEX-Bus on the BC810, and terminated in each end with TB850 male CEX-Bus
termination unit. The two BC810 are connected with the interconnection cable
TK851.
The maximum number of CEX-Bus units connected to a BC810 is six. The
primary function of BC810 is to divide the CEX-Bus into two physically separate
segments for increased system availability, a faulty CEX-Bus unit on one segment
will not affect the processor unit or the other CEX-Bus segment. It is also
important to note that when using the BC810 together with redundant CEX-Bus
units these units shall be mounted on different BC810 CEX-Bus segment 140CPU67160S 安全型PLC安装热备CPU模块 Schneider
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