369-HI-R-0-0-0-0-E MULITIN 369 SR 综合保护继电器 GE
短路（即使保险丝安装在24V直流配电系统中）或大
负载变化会在电源中产生不希望的电压骤降。
为了避免AC 800M控制器受到现场设备的影响
建议安装单独的电源（参见155页的图55
156页图56）。
现场设备分段
如果连接到AC 800M控制器的现场设备将被分为：
组–从而避免一组中的电源故障影响
其他组–建议为每个现场使用单独的电源
设备组。
在24V直流配电系统中使用熔断器不是故障安全措施。如果
如果一组发生短路，则电压极有可能在保险丝之前下降
打击；因此，所有组都将经历电压下降。
电缆保护
24V直流配电系统电缆必须采用熔断器保护。为了允许
在过载/短路情况下，电源输出电流受到限制。允许
电源的额外容量至少为额定电流值的3-4倍
大连接保险丝，请记住在
计算
连接备选方案
现场设备电源的连接方式与使用的方式相同
用于连接交流800M装置并为其供电（参见184页图66和
185页图67）。但是，应注意，相同的电源断路器
该装置可用于控制和隔离两个电源。或者，
每个支路上可使用独立的电源断路器（参见185页图67）。
3节配置：从外部电源供电
3BSE036351-600 A 183
从外部电源供电
AC 800M控制器可由外部+24V直流电源供电。这
对于许多不同类型的工厂设备，源通常是常见的，导致
连接AC 800M控制器的长电源电缆。此外，重载变化可以
导致控制器电源电压变化，因此需要采取预防措施
以防止控制器故障。
如果PM8XX电源端子处存在+24 V电压下降的风险
低于19.2 V持续1 ms以上，则必须使用储能器
动力装置。
ABB要求在以下情况下使用DC/DC转换器和额外的储能器：
使用电缆长度超过10m的外部直流电源。
对于AC 800M控制器和相关单元的冗余电源，
始终从SS8xx投票设备导出连接。参见页的图66
184
从外部电源供电3节配置
184 3BSE036351-600 A
图66.AC 800M装置的电源选项
单位
供应
设备8xx
补给
权力
干线
24伏直流电
分配
SD投票
冗余电源
冗余电源
终端
24伏直流电
分配
终端
24伏直流电
分配
终端
8xx
供给
权力
SD
8xx
SD
8xx
SD
8xx
党卫军
装置
投票
8xx
党卫军
8xx电源SD
干线1
干线2
单位
供应
单位
供应
电源断路器
电源断路器
电源断路器
电源断路器
单电源
权力
补给
3节配置：从外部电源供电
3BSE036351-600 A 185
图67.为现场设备供电
领域
设备
8xx
SD
8xx
SD
单位
供应
供应
24伏直流电
分配
24伏直流电
分配
独立的
8xx
SD电源
电源断路器
电源断路器
供应
单位
24伏直流电
分配
24伏直流电
分配
独立的
电源
独立电源
断路器单元
电源断路器
干线
终端
终端
终端
终端
电源
领域
设备
供应
8xx
SD
为现场设备供电
从外部电源供电3节配置
186 3BSE036351-600 A
3BSE036351-600 A 187
4节操作
本节描述了AC 800M控制器的操作，包括
PM8xx（单或冗余配置）处理器单元，以及各种
可选单元。有关可选装置的更多技术信息，请参见附录
A、 硬件单元。
AC 800M控制器（PM8xx）
配备控制软件的基本PM8xx/TP830或PM891硬件单元
安装在AC 800M硬件平台上，构成AC 800M控制器。
AC 800M控制器（PM8xx）4节操作
188 3BSE036351-600 A
LED指示灯
有关放置的说明，请参见36页的图2。
表19.PM8xx–LED指示灯
标记颜色函数
F（故障）红色正常状态-关闭
重新启动（初始化）临时点亮F（故障）。
也可以通过软件在以下过程中进行操作：
特殊状态，例如：
固件升级。
R（un）绿色正常状态–打开（当应用程序
执行）
临时冷重启（短初始化）
熄灭R（un）。
控制器复位（长初始化，3秒或更长）
R（un）闪烁，直到INIT按钮
释放。
P（电源）绿色正常状态–开启
点亮时，表示CPU DC/DC
转换器正在生成有效的+5 V和+3.3 V
直流电源电压。
没有软件控制。
B（蓄电池）绿色正常状态–开启
当int时点亮 369-HI-R-0-0-0-0-E MULITIN 369 SR 综合保护继电器 GE
369-HI-R-0-0-0-0-E MULITIN 369 SR 综合保护继电器 GEShort circuits (even with fuses installed in the 24 V DC distribution system) or large
load changes can produce unwanted voltage dips in supply.
To avoid the AC 800M Controller being influenced by field equipment, it is strongly
recommended that separate power supplies be installed (see Figure 55 on page 155
and Figure 56 on page 156).
Sectioning Field Equipment
If field equipment connected to an AC 800M Controller is to be sectioned into
groups – thus avoiding a power failure in one group from influencing the power to
other groups – then it is recommended to use separate power supplies for each field
equipment group.
The use of fuses in the 24 V DC distribution system is not a fail-safe measure. If a
short circuit occurs in one group, then voltage will most likely drop before a fuse
blows; consequently all groups will experience a drop in voltage.
Cable Protection
24 V DC distribution system cables must be fuse-protected. In order to allow for
overload/short circuit situations, the power supply output current is limited. Allow
the power supply an extra capacity of at least 3-4 times the rated current value of the
largest connected fuse and remember to include long cable resistance in the
calculation.
Connection Alternatives
The field equipment power supply can be connected in the same manner as that used
for connecting and powering the AC 800M units (see Figure 66 on page 184 and
Figure 67 on page 185). However, it should be noted that the same Mains Breaker
Unit can be used to control and isolate both power supplies. Alternatively,
independent Mains Breakers can be used on each spur (see Figure 67 on page 185).
Section 3 Configuration Powering from an External Source
3BSE036351-600 A 183
Powering from an External Source
The AC 800M Controller can be powered from an external +24 V DC source. This
source is often common for many different types of plant equipment, resulting in
long power cables to the AC 800M Controller. Furthermore, heavy load changes can
cause variations in controller supply voltage making it necessary to take precautions
against low voltage in order to prevent controller malfunction.
Should there be a risk that the +24 V at the PM8XX power terminals could drop
below 19.2 V for more than 1 ms, then an energy reservoir must be used for
Powering Units.
ABB requires the use of DC/DC converter and extra energy reservoir in case
external DC-supply with longer cables than 10 m is used.
For redundant power supplies to the AC 800M controller and associated units,
always derive connections from the SS8xx voting device. See Figure 66 on page
184.
Powering from an External Source Section 3 Configuration
184 3BSE036351-600 A
Figure 66. Power Supply Options for AC 800M Units
Units
Supply to
Device 8xx
Supplies
Power
Mains
24 V DC
Distribution
SD Voting
Redundant Power Supplies
Redundant Mains Power Supplies
Terminals
24 V DC
Distribution
Terminals
24 V DC
Distribution
Terminals
8xx
Supply
Power
SD
8xx
SD
8xx
SD
8xx
SS
Device
Voting
8xx
SS
8xx Mains SD
Mains 1
Mains 2
Units
Supply to
Units
Supply to
Mains Breaker
Mains Breaker
Mains Breaker
Mains Breaker
Single Power Supply
Power
Supplies
Section 3 Configuration Powering from an External Source
3BSE036351-600 A 185
Figure 67. Powering Field Equipment
Field
Equipment
8xx
SD
8xx
SD
Units
Supply to
Supply to
24 V DC
Distribution
24 V DC
Distribution
Independent
8xx
SD Mains
Mains Breaker
Mains Breaker
Supply to
Units
24 V DC
Distribution
24 V DC
Distribution
Independent
Power Supplies
Independent Mains
Breaker Units
Mains Breaker
Mains
Terminals
Terminals
Terminals
Terminals
Power Supplies
Field
Equipment
Supply to
8xx
SD
Powering Field Equipment
Powering from an External Source Section 3 Configuration
186 3BSE036351-600 A
3BSE036351-600 A 187
Section 4 Operation
This section describes the operation of the AC 800M Controller, comprising a
PM8xx (single or redundant configuration) processor unit, together with various
optional units. For additional technical information on optional units, see Appendix
A, Hardware Units.
AC 800M Controller (PM8xx)
Equipped with Control Software, the basic PM8xx/TP830 or PM891 hardware units
mounted on the AC 800M hardware platform constitute an AC 800M Controller.
AC 800M Controller (PM8xx) Section 4 Operation
188 3BSE036351-600 A
LED Indicators
See Figure 2 on page 36, for description of placement.
Table 19. PM8xx – LED Indicators
Marking Color Function
F(ault) Red Normal state – OFF
Re-start (INIT) temporarily lit F(ault).
May also be operated by software during
special states such as for instance
FW-upgrade.
R(un) Green Normal state – ON (When application is
executing)
Cold Restart (Short INIT) temporarily
extinguishes R(un).
Controller Reset (Long I
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