控制板 现货 XVC772A102 3BHE032285R0102

 控制板 现货 XVC772A102 3BHE032285R0102
两个PM891控制器可以作为一个冗余对一起工作，其中一个是PM891
一个用作主控制器，另一个用作备用控制器。后备
如果在中发生任何硬件错误，控制器将接管过程控制器任务
主控制器。
控制网络连接通过两个内置的IEEE802.3以太网实现
PM891上的信道。
PM891还提供通信扩展总线（CEX总线），其中
可以连接多个扩展模块。这些模块提供连接
适用于各种现场总线和I/O系统。如果是冗余对，则
PM891连接到同一CEX总线，其中一个可以控制
模块。
物理上，PM891处理器单元包括：
•电源和状态信号连接器（L+、L-、SA、SB）。
•用于电气CEX总线的DB25连接器。
•外部电池连接器。
•两个以太网通道的RJ45连接器。
•一个Com端口。
•光模块总线连接器，多可连接七个集群，
具有12个非冗余或6个冗余模块（即7x12=84个模块）。
•冗余链路连接器。
•SD（安全数字）存储器连接器。
•LED。
•按钮复位开关。
1节PM891处理器单元简介-概述
3BSE036351-510 A 41
图8显示了前视图，图9显示了顶视图，图10显示了
PM891的底视图。
图8.PM891前视图
通用域名格式
港口城市
外部的
电池
供给
插座
电源
和
监督
信号
插座
CN1和CN2端口
DIN导轨锁定装置Tx/Rx光学
模块总线端口
CEX总线
LED状态
指标
PM891处理器单元-概述1节介绍
42 3BSE036351-510 A
螺钉端子用于连接电源和外部
电池
24 V直流电源为CEX总线上的所有装置供电。光学
模块集群独立供电。
图9.PM891俯视图
安全数字（SD）插槽初始化
RCU数据链路RCU控制链路
按钮
1节PM891处理器单元简介-概述
3BSE036351-510 A 43
冗余链路由两条电缆组成；RCU数据链路电缆和RCU
控制链路电缆（见图9）。
图11显示了PM891的框图。
图10.PM891-带有Tx1/Rx1和CN1/CN2端口的底视图。
PM891处理器单元-概述1节介绍
44 3BSE036351-510 A
图11 PM891的框图
1节PM891处理器单元简介-概述
3BSE036351-510 A 45
图12.带有单个PM891的AC 800M/S800 I/O互连配置
注1-多7个集群x 12=84个模块。集群之间的大距离为200米。
注2-远程S800输入/输出。多24个模块/站（12个/集群），
24 x 32=每段768个模块。
（1集群仅适用于PM851）限制适用，请参阅I/O文档。
附加站
多
每站32个
转发器
TB820
CI801
TB820
至6个附加光学元件
模块总线簇
视力的
R段
单元
视力的
视力的
CI854A
见注1
见注2
1段
现场总线DP
（不是PM851）
注3：PM851多一个CEX模块。
见注3
PM891
PM891处理器单元-概述1节介绍
46 3BSE036351-510 A
图13.AC 800M/S800输入/输出和基金会现场总线高速示例
单PM891配置中的以太网互连
PM891
中央处理器
CI860 CI854A
TB820 DI810 AI810 AO820
至6个附加光学元件
每个集群多12个模块
模块总线簇
看见
注1
看见
注2
注3——例如，基金会现场总线
视力的
视力的
现场总线DP
多12个单位
基础
现场总线HSE
LD 800HSE
见注3
高速以太网
基金会现场总线H1链路
1…4链接
FF场
装置
1至4链路基金会现场总线H1
FF场
装置
FF场
装置
HSE
装置
注1–多7个集群（PM851的1个光学集群）。
注2——中央S800输入/输出。多96个单位。
集群之间的大距离为200米。
限制适用，请参阅I/O文档。
连接装置LD 800HSE
LD 800HSE
见注3
1节介绍PM891/PM86x/TP830处理器单元-冗余
3BSE036351-510 A 47
PM891/PM86x/TP830处理器单元-冗余
处理器单元冗余可用于PM861、PM864、PM865、PM866和
PM891。在这种情况下，控制器包含两个处理器单元，每个处理器单元包括
用于系统和应用软件的存储器。一个单元作为主要单元
另一种是备份（热备用）。主处理器单元控制该过程。这个
备用设备随时待命，准备在主设备出现故障时接管。这个
在不到10毫秒的时间内无冲击地完成转换。在转换过程中
过程输出被冻结。
切换后，系统作为无冗余的系统运行
只有一个处理器单元在运行。您可以更换出现故障的处理器
系统运行时的装置。进行更换后，系统
再次具有冗余处理器单元。
如果备份单元出现错误，您还可以在
系统正在运行。

 控制板 现货 XVC772A102 3BHE032285R0102


 控制板 现货 XVC772A102 3BHE032285R0102
Two PM891 controllers can function together as a redundant pair, with one PM891
acting as the primary controller and the other acting as the backup. The backup
controller takes over the process controller tasks if any hardware error occurs in the
primary controller.
The control network connectivity is obtained by two built in IEEE802.3 Ethernet
channels on PM891.
PM891 also provides a communication expansion bus (CEX-Bus) to which a
number of expansion modules can be connected. These modules offers connectivity
to a wide range of field bus and I/O systems. In case of a redundant pair, both
PM891s are connected to the same CEX-Bus and one of them can control the
modules.
Physically, the PM891 Processor Unit consists of:
• Connector for power supply and status signals (L+, L-, SA, SB).
• DB25 connector for Electrical CEX-Bus.
• External battery connector.
• RJ45 connectors for the two Ethernet channels.
• One Com port.
• Optical Modulebus connector for connection to a maximum of seven clusters,
with 12 non-redundant or six redundant modules (that is, 7x12 = 84 modules).
• Connectors for Redundancy Link.
• SD (Secure Digital) memory connector.
• LEDs.
• Pushbutton reset switch.
Section 1 Introduction PM891 Processor Unit – General
3BSE036351-510 A 41
Figure 8 shows the front view, Figure 9 shows the top view, and Figure 10 shows the
bottom view of PM891.
Figure 8. PM891-Front view
Com
Port
External
Battery
Supply
Socket
Power supply
and
Supervision
Signal
Socket
CN1 and CN2 ports
DIN-Rail locking device Tx/Rx Optical
ModuleBus port
CEX Bus
LED Status
Indicators
PM891 Processor Unit – General Section 1 Introduction
42 3BSE036351-510 A
Screw terminals are provided for connections to the power supply and the external
battery.
The 24 V DC power supply powers all the units on the CEX-Bus. The optical
module clusters are powered independently.
Figure 9. PM891-Top view
Secure Digital (SD) slot INIT
RCU Data Link RCU Control Link
button
Section 1 Introduction PM891 Processor Unit – General
3BSE036351-510 A 43
The Redundancy Link consists of two cables; RCU Data Link Cable and RCU
Control Link Cable (see Figure 9).
Figure 11 shows the block diagram of PM891.
Figure 10. PM891 - Bottom view with Tx1/Rx1 and CN1/CN2 ports.
PM891 Processor Unit – General Section 1 Introduction
44 3BSE036351-510 A
Figure 11. Block diagram of PM891
Section 1 Introduction PM891 Processor Unit – General
3BSE036351-510 A 45
Figure 12. AC 800M/S800 I/O Interconnection Configuration with single PM891
Note1 - Maximum 7 clusters x 12 = 84 modules. Max 200 m between clusters.
Note 2 - Remote S800 I/O. Maximum 24 modules/station (12/cluster),
24 x 32 =768 modules per segment.
(1 cluster only for PM851)Restrictions apply, see I/O documentation.
Additional stations
up to maximum of
32 stations per
Repeater
TB820
CI801
TB820
To 6 Additional Optical
Modulebus Clusters
Optical
Segment R
Unit
Optical
Optical
CI854A
See Note 1
See Note 2
1 Segment of
PROFIBUS DP
(not PM851)
Note 3 - Maximum one CEX-module for PM851.
See Note 3
PM891
PM891 Processor Unit – General Section 1 Introduction
46 3BSE036351-510 A
Figure 13. Example of AC 800M/S800 I/O and FOUNDATION Fieldbus High Speed
Ethernet Interconnection in Single PM891 Configuration
PM891
CPU
CI860 CI854A
TB820 DI810 AI810 AO820
To 6 Additional Optical
Max 12 Modules per Cluster
Modulebus Clusters
See
Note 1
See
Note 2
Note 3 – For example FOUNDATION Fieldbus
Optical
Optical
PROFIBUS DP
Max 12 units
FOUNDATION
Fieldbus HSE
LD 800HSE
see Note 3
High Speed Ethernet
FOUNDATION Fieldbus H1 Link
1...4 Links
FF Field
Device ...
1 to 4 Links FOUNDATION Fieldbus H1
FF Field
Device
FF Field
Device
HSE
Device
Note 1 – Maximum 7 clusters (1 optical cluster for PM851).
Note 2 – Central S800 I/O. Max. 96 units.
Max 200 m between clusters.
Restrictions apply, see I/O documentation.
Linking Device LD 800HSE
LD 800HSE
see Note 3
Section 1 Introduction PM891/PM86x/TP830 Processor Unit – Redundancy
3BSE036351-510 A 47
PM891/PM86x/TP830 Processor Unit – Redundancy
Processor unit redundancy is available for PM861, PM864, PM865, PM866, and
PM891. In this case, the controller contains two processor units, each including
memory for system and application software. One unit is acting as primary, the
other is backup (hot stand-by). The primary processor unit controls the process. The
backup stands by, ready to take over in case of a fault in the primary. The
changeover is done bumplessly and in less than 10 ms. During the changeover, the
process outputs are frozen.
Following a changeover, the system operates as a system without redundancy with
only one processor unit in operation. You can replace the malfunctioning processor
unit while the system is running. After the replacement is carried out, the system
once again has a redundant processor unit.
If an error arises in the backup unit, you can also replace the backup unit while the
system is running.

 控制板 现货 XVC772A102 3BHE032285R0102