5D5212.06 14520 安装在控制柜外显示终端 Schenck
要求：
–独立于设备电源的房间照明。建议使用电池供电的应急照明系统。
–完善的工艺连接，有或无编组
设施
–通过铜排网进行有效接地
–电缆布线遵循标准安装规定。
–电力和其他必要公用设施的可用性。
–遵守标准和法律法规。
–机柜前面有足够的自由空间，以便完全打开
门。出于安全原因，必须始终有足够的可用空间，
即使门处于完全打开位置。
有关设计注意事项的更多信息，请参见附录B，电力
消耗
电磁兼容性
根据CE标志，AC 800M装置本质上是EMC兼容的
规则。关于电磁兼容性的附加信息，
见附录D，指令注意事项。
电缆第2节安装
68 3BSE036351-600 A
电缆
现场电缆敷设
现场和通信电缆的敷设无特殊要求
连接至AC 800M。然而：
•应始终使用不带调制解调器的短距离通信电缆
与其他电缆的距离为10厘米（4英寸）。
•所有连接至AC 800M的电缆应以30cm的距离布线
（12英寸）距离所有电力电缆，10厘米（4英寸）距离属于
相关国际豁免标准，第4类。
现场电缆类型
以下应用始终使用屏蔽电缆：
•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。 5D5212.06 14520 安装在控制柜外显示终端 Schenck
 5D5212.06 14520 安装在控制柜外显示终端 Schenck
equirements:
– Room lighting independent of the equipment power source. A batterypowered emergency lighting system is recommended.
– A well-developed process connection, with or without marshalling
facilities.
– Effective grounding through a net of copper bars
– Cable routing observing standard installation regulations.
– Availability of power and other necessary utilities.
– Observation of standards and legal regulations.
– Sufficient free space in front of the cabinet in order to fully open the
doors. For safety reasons there must always be adequate space available,
even with the doors in the fully open position.
For additional information regarding design considerations, see Appendix B, Power
Consumption.
Electro-Magnetic Compatibility
The AC 800M units are intrinsically EMC compatible according to CE marking
rules. For additional information regarding Electro-Magnetic Compatibility,
see Appendix D, Directive Considerations.
Cables Section 2 Installation
68 3BSE036351-600 A
Cables
Laying Field Cables
There are no special requirements for laying field and communication cables
connected to AC 800M. However:
• Cables for short-distance communication without modems should always be
routed at a distance of 10 cm (4 in) from other cables.
• All cables connected to AC 800M should be routed at a distance of 30cm
(12 in) from all power cables and 10 cm (4 in) from cables belonging to the
relevant international immunity standard, class 4.
Type of Field Cable
Always use shielded cables for the following applications:
• 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. | 5D5212.06 14520 安装在控制柜外显示终端 Schenck | | | |
