5AP1120.101E-000 5PC9 521985.002-00 显示控制系统 B&R
5AP1120.101E-000 5PC9 521985.002-00 显示控制系统 B&R
•通信
•高频脉冲传输
•低电平模拟信号，例如Pt100和热电偶
非屏蔽电缆可用于其他应用。信号和返回
导线应位于同一电缆中。
防雷
工业装置和发电厂通常具有良好的集成
接地网，作为配电系统的一部分安装。这样的
安装不需要额外的防雷保护，除非使用架空设备
室外环境中的布线或悬挂电缆。
然而，大型分散工厂，如供水设施和炼油厂
在信号电缆可能在上方布线的地方，接地系统不充分
地在这种情况下，必须安装防雷设备。
是否在接地系统外发现电缆（即使距离较短
例如10米[9.1码]）必须安装防雷设备。
第二节安装电源
3BSE036351-600 A 69
电源
正常情况下，AC 800M控制器所需的电源
相关现场设备可从工厂标准中获得
120/230 V交流电源。
电网滤波器
使用SD831/832/833/834时，无需使用电网滤波器
电源装置。
电源断路器
电源断路器必须安装在控制器附近
安装应允许立即断开与
设备，如有需要。然而，电源断路器的主要功能
是提供一种在维护期间完全隔离电源的方法。
电源断路器必须安装在易于接近的位置
并且清晰可见，即在任何外壳或机柜外部。
保护接地（PE）
始终在连接到的设备上安装保护接地连接
115/230 V交流电源。
出于电气安全原因，所有导电部件，如DIN导轨或
轨道固定的导电部件需要连接到PE。
需要这种PE连接的安全方面是由于柜内接线
仅提供基本绝缘或意外接触/连接（如松动电线）
导电金属部件的危险电压。
连接应满足IEC61131-2中PE连接的要求，
即：具有30A静态电流流过的导体，
测量对应于＜0.1欧姆的电压降。
ABB强烈建议设备PE导线应为35 mm2
（2 AWG）铜导线的横截面。
外壳第2节安装
70 3BSE036351-600 A
熔断外部电源电缆
标准AC 800M外部电源的推荐保险丝额定值
控制器配置，安装在地板或壁挂式机柜内，如中所示
第70页表3。
如果配置与所述配置不同，计算说明
电流消耗可在相关I/O手册中找到。对于
AC 800M控制器，见附录B，功耗。
不间断电源
SD83X系列电源装置可轻松处理短电源
工业系统中通常发生的中断（<20毫秒）
环境尽管如此，有时需要保护某些应用程序
通过安装不间断电源防止短暂的电压故障
（UPS）设备。
如果发生电源故障，AC 800M控制器将安全关闭。
在停机期间，将备份应用程序内存和系统时钟
通过内部电池。系统子系统 5AP1120.101E-000 5PC9 521985.002-00 显示控制系统 B&R
 5AP1120.101E-000 5PC9 521985.002-00 显示控制系统 B&R
• Communications
• High-frequency pulse transmission
• Low level analog signals, for example Pt100 and thermocouples
Unshielded cables may be used for other applications. The signal and return
conductor should be located in the same cable.
Lightning Protection
Industrial installations and power plants are normally provided with well-integrated
grounding networks, installed as part of the power distribution system. Such
installations do not require additional lightning protection unless using overhead
wiring or suspended cables in an outdoor environment.
However, large dispersed plants such as water supply installations and oil refineries
will have an inadequate grounding system where signal cables may be routed above
ground. In such cases lightning protection equipment must be installed.
Should cables be discovered outside the grounding system (even at a short distance
such as 10 m [9.1 yds]) lightning protection equipment must be installed.
Section 2 Installation Power Supply
3BSE036351-600 A 69
Power Supply
Under normal circumstances, the power supply required by AC 800M Controller
and associated field equipment can be obtained from the plant’s standard
120/230 V AC mains supply.
Mains Net Filter
It is not necessary to use mains net filters when using the SD831/832/833/834
power supply units.
Mains Breaker
A mains breaker must be installed in the immediate vicinity of a controller
installation to allow for immediate total power supply disconnection to the
equipment, should the need arise. However, the prime function of the mains breaker
is to provide a means of isolating the power supply completely during maintenance.
The mains breaker must be installed in a location where it is both easily accessible
and clearly visible, that is, outside any enclosure or cabinet.
Protective Earth (PE)
Always install a protective earth connection on equipment connected to a
115/230 V AC supply.
For electrical safety reasons all conductive parts, such as the DIN-rail or the
conductive parts to which the rail is fastened, are required to be connected to PE.
The safety aspect that requires such a PE-connection is due to e.g. in-cabinet wiring
providing basic insulation only or accidental touch/connection (e.g. loose wires) of
hazardous voltages to conductive metal parts.
The connection shall fulfill the requirements in IEC61131-2 for PE connections,
that is: A conductor which, having a static current of 30 A flowing through,
measures a voltage drop which corresponds to <0.1 ohm.
ABB strongly recommends that the equipment PE-conductor should be of 35 mm2
(2 AWG) cross section if copper lead.
Enclosures Section 2 Installation
70 3BSE036351-600 A
Fusing the External Mains Supply Cable
The recommended fuse rating for the external mains supply of a standard AC 800M
Controller configuration, housed within a floor or wall-mounted cabinet, is given in
Table 3 on page 70.
Should the configuration be other than that stated, instructions for calculating
current consumptions can be found in the relevant I/O manual. For the
AC 800M Controller, see Appendix B, Power Consumption.
Uninterruptable Power Supply
The SD83X series of power supply units comfortably handle the short power
interruptions (<20 milli seconds) that may occur normally within an industrial
environment. Despite this, it is sometimes necessary to protect certain applications
against brief voltage failures by the installation of an Uninterruptable Power Supply
(UPS) device.
The AC 800M contr | 5AP1120.101E-000 5PC9 521985.002-00 显示控制系统 B&R | | | | |
