閱讀、理解和注意所有指示至關(guān)重要，

本說明書中的警告和注意事項(xiàng)

以及設(shè)備本身。只有合格人員才能

允許安裝、操作、維護(hù)和修理

設(shè)備

請(qǐng)勿拆卸或安裝印刷電路板、模塊或

包含它們的組件，除非中另有說明

這個(gè)指令，加上電源。這可能會(huì)損壞

設(shè)備拆卸或時(shí)，斷開所有交流線路的電源

連接交流電線，防止人員受傷和設(shè)備損壞。為防止設(shè)備損壞，移除直流電

當(dāng)移除或連接直流電線時(shí)，為所有直流電線供電，

電路板或連接到它們的模塊或組件。

本節(jié)討論的是

MPSIII系統(tǒng)。對(duì)于完成這些任務(wù)的過程，

請(qǐng)參閱本文末尾的安裝順序流程圖

有關(guān)正確程序的路徑的部分。

有關(guān)交流配電和系統(tǒng)的詳細(xì)信息

接地，參考：

?現(xiàn)場(chǎng)規(guī)劃。

?供電和接地的推薦規(guī)程

敏感電子設(shè)備（IEEE Emerald Book），

ANSI/IEEE 1100標(biāo)準(zhǔn)。

?工業(yè)和

商業(yè)電力系統(tǒng)（IEEE綠皮書），

ANSI/IEEE 142。

不要試圖安裝任何系統(tǒng)或相關(guān)設(shè)備

在查閱和理解這些文件之前

與任何其他適用的國(guó)際標(biāo)準(zhǔn)一樣。

本說明書不討論接地系統(tǒng)的細(xì)節(jié)。良好的接地做法可防止問題并減少

系統(tǒng)停機(jī)。完整且正確接地的電氣設(shè)備

該系統(tǒng)對(duì)于人員安全、設(shè)備保護(hù)、，

以及正常的過程系統(tǒng)操作。數(shù)字過程控制

系統(tǒng)需要一個(gè)單點(diǎn)接地系統(tǒng)，該系統(tǒng)有兩個(gè)

路徑：交流接地的一條路徑（安全

接地）和直流接地（系統(tǒng)

常見）。

有關(guān)系統(tǒng)接地的詳細(xì)信息，請(qǐng)參閱現(xiàn)場(chǎng)

規(guī)劃說明。

It is critical to read, understand, and heed all instructions,?

warnings, and cautions located throughout this instruction?

and on the equipment itself. Only qualified personnel must be?

allowed to install, operate, maintain, and repair this?

equipment.

Do not remove or install printed circuit boards, or modules or?

components containing them, unless otherwise indicated in?

this instruction, with power applied. This could damage the?

equipment. Remove power to all AC wiring when removing or?

connecting AC wires to prevent injury to personnel and equipment damage. To prevent equipment damage, remove DC?

power to all DC wiring when removing or connecting DC wires,?

circuit boards, or modules or components connected to them.

This section discusses AC power wiring and grounding for the?

MPSIII system. For the procedures to accomplish these tasks,?

refer to the installation sequence flowcharts at the end of this?

section for the path to the proper procedure.

For detailed information on AC power distribution and system?

grounding, refer to:

? Site Planning.

? Recommended Practice for Powering and Grounding?

Sensitive Electronic Equipment (IEEE Emerald Book),?

ANSI/IEEE 1100.

? Recommended Practice for Grounding of Industrial and?

Commercial Power Systems (IEEE Green Book),

ANSI/IEEE 142.

Do not attempt to install any system or related equipment?

before consulting and understanding these documents as well?

as any other applicable international standards.

This instruction does not discuss the details of grounding systems. Good grounding practices prevent problems and reduce?

system downtime. A complete and properly grounded electrical?

system is vital for personnel safety, equipment protections,?

and normal process system operation. Digital process control?

systems require a single-point grounding system that has two?

paths: one path for an alternating current ground (safety?

ground) and one path for a direct current ground (system?

common).

For detailed information on system grounding, refer to the Site?

Planning instruction.