228B3156G2 模拟量输入输出控制器模拟数据 GE 通用电气图中显示了连接输入电源的各种可能性——
通过电源断路器、电源装置和SS83X表决装置，连接至
24V直流配电端子。
AC 800M控制器及其I/O系统通常位于一个或多个
外壳或机柜。容纳AC 800M控制器的机柜还可以：
包含通过电气模块总线连接到控制器的I/O单元
光纤模块总线或PROFIBUS DP的通信接口。
包含AC 800M控制器的机柜
以下情况可能需要从该机柜供电：
•电源装置：为机柜中每个装置的电子电路供电。
•现场设备供电：设备电源、继电器触点等
机柜外部，但连接到输入/输出单元的输入/输出
内阁
包含I/O系统的机柜
如果I/O中未提供其他信息，则使用上述建议
系统文档。
强烈建议：
•在每个机柜中使用电源为装置供电（仅当机柜
并且大电缆长度小于10m，
装置的电源是否可以从另一个机柜获取
•使用单独的电源为单元供电（包括S800集群
调制解调器）和为现场设备供电
第3节机柜内电源装置的配置
3BSE036351-600 A 181
机柜中的电源装置
该电源仅连接到机柜内的单元，例如：
•PM8XX，也为所有通信接口供电（通过CEX总线）
所有S800输入/输出单元连接到其电气模块总线。
•BC810/BC820为连接到其自身的所有通信接口供电
段
•TB820V2/TB840（用于S800 I/O的光调制解调器），也为所有S800供电
连接到其电气模块总线的I/O单元。
•CI840和CI801（用于S800 I/O的PROFIBUS DP接口），也可供电
所有S800输入/输出单元连接至其电气模块总线。
•其他I/O系统的PROFIBUS DP适配器（取决于供应
I/O装置的布置，可能需要将电源连接到每个I/O
单位）。
•机柜内的通信调制解调器。
该电源的主要配置规则是将24 V电缆保持在
内阁。
为机柜外的现场设备供电
这旨在为处理信号和设备提供电源
在柜子外面。
干扰
从AC 800M控制器中的电源为现场设备供电
机柜通常需要使用长的24 V直流电缆，可以轻松地连接本地
并将其直接引回到电源单元。安装
电缆，请遵循第68页电缆下给出的现场电缆说明。
电源输出短路
SD83X系列电源在其输出端没有额外的储能器。在
如果发生短路，电源输出电压将迅速下降
228B3156G2 模拟量输入输出控制器模拟数据 GE 通用电气
228B3156G2 模拟量输入输出控制器模拟数据 GE 通用电气
diagrams showing various possibilities for connecting the incoming mains power –
via the mains breaker, the power supply units and the SS83X voting devices – to the
24 V DC distribution terminals.
The AC 800M Controller and its I/O system are normally located in one or several
enclosures or cabinets. The cabinet housing the AC 800M Controller can also
contain I/O units connected to the controller via the electrical ModuleBus, the
optical ModuleBus or the communication interfaces for PROFIBUS DP.
Cabinet Containing AC 800M Controller
From this cabinet power may be required for:
• Powering Units: power to the electronic circuitry for each unit in the cabinet.
• Powering Field Equipment: power to equipment, relay contacts etc. located
outside the cabinet, but connected to the inputs/outputs of the I/O units in the
cabinet.
Cabinet Containing I/O System
Use the recommendations given above if no other information is given in the I/O
system documentation.
It is strongly recommended to:
• use a power supply in each cabinet for Powering Units (only when cabinets
are mounted side by side, and the maximum cable length is less than 10 m,
can power to the units be taken from another cabinet)
• use separate power supplies for Powering Units (including S800 cluster
modems) and Powering Field Equipment
Section 3 Configuration Powering Units in the Cabinet
3BSE036351-600 A 181
Powering Units in the Cabinet
This power supply is only connected to units within the cabinet such as:
• PM8XX, which also powers all communication interfaces (via the CEX-Bus)
and all S800 I/O units connected to its electrical ModuleBus.
• BC810/BC820 powers all communication interfaces connected to its own
segment.
• TB820V2/TB840 (optical modem for S800 I/O) which also powers all S800
I/O units connected to its electrical ModuleBus.
• CI840 and CI801 (PROFIBUS DP interface for S800 I/O) which also powers
all S800 I/O units connected to its electrical ModuleBus.
• PROFIBUS DP adapters for other I/O systems (depending on the supply
arrangement for the I/O units, it may be necessary to connect power to each I/O
unit).
• Communication modems located in the cabinet.
The main configuration rule for this power supply is to retain the 24 V cables within
the cabinet.
Powering Field Equipment outside the Cabinet
This is intended for supplying power to process signals and equipment located
outside the cabinet.
Interference
Powering field equipment from a power supply located in the AC 800M Controller
cabinet often requires the use of long 24 V DC cables that can easily pick up local
interference and direct it straight back to the power supply units. When installing the
cables, follow the instructions for Field Cables, given under Cables on page 68.
Short-Circuit at Power Supply Output
The SD83X series power supply has no extra energy reservoir at its outputs. In the
event of a short circuit the power supply output voltage will fall rapidly | 228B3156G2 模拟量输入输出控制器模拟数据 GE 通用电气 | | | |
