ABB传感器PFEA111-112中英文手册(3)

-to the earth bar fitted inside the enclosure of the IP 65-Version

(NEMA 4 )

-电缆的屏蔽需连接到：-接地排IP20版本（未标记）

-接地排内置电缆附件IP65版本(NEMA 4 [国际电器制造业协

会])。

External indicating instrument (not included in the ABB delivery) 外部指示仪表（不包括在ABB的交货内）

Mains supply (交流电源) screen (屏蔽线) To control system (控制系统) Junction Box (接线盒) Load cell signals (测压元件指令输出) Load cell excitation (测压元件激励输入) Load cell (压力传感器)

· The maximum permitted cable resistance in the excitation circuit is shown in Table 2-1. Before commissioning, check cable resistance in the load cell excitation circuit. 最大限度允许电缆电阻在激励电路时如表2-1中所示，试车以前检测电缆电阻符合要求。 · Solid conductors should not be connected to terminals. Pins should not be crimped to stranded （绞成股）cores.

固体导体不直接连接在接线端子上，

· The cable from the load cell must be a robust four core cable, see Figure 2-2. Diagonal pairs must be used for the signal circuits and excitation circuits.

本译：压头的引出电缆是四芯电缆，信号线和励磁线是分别对角的，见图2-2,。

Signal（信号、指令） load cell excitation（测压元件激励回路）

· Between the junction box and the tension electronics, signal and excitation must be routed in separate cables. For example: For example: a 2×2.5 mm cable for the excitation and a shielded 2×2×0.5 mm cable with twisted pair cores for the load cell signals.

接线盒到张力测量装置的信号和励磁电缆必须分开，例如：一根2×2.5的电缆做激励回路和一根2×2×0.5的双绞屏蔽线电缆接到压头上。

· Cable for synchronization of two of more tension electronics must be screened or a twisted pair. 两台或两台以上的张力测量装置的同步连接电缆必须屏蔽或者双绞。

· The signal cable between the tension electronics and instruments, or process equipment, must be a screened 0.5 mm cable.

使用信号电缆或0.5的屏蔽电缆连接压力电子仪器和仪表。

· Cable screens must be connected to the copper earth bar. The screen connection maximum length is 50 mm.

电缆屏蔽线必须连接铜制接地棒，屏蔽接线处最大长度为50mm。

· The protective earth conductor of the incoming mains supply must be connected to the copper earth bar in the cubicle.

主回路进线电缆的保护地线必须连接在配电室的铜制接地线上。

2.4.1.2 Interference (干扰)

For immunity to interference, the load cell cables should be separated as far as possible from noisy power supply cables, A minimum distance of 0.3 m (12 inches) is recommended. Where the measuring system cables meet noisy cables, they must cross at right angles.

出于抗干扰考虑，压头的电缆要尽可能的远离电源电缆，至少0.3米（12英寸）。在两根电缆相遇的地方，必须使它们交叉。

2.4.1.3 Synchronization (同步)

Synchronization is not required for the wall mounted IP 65-version (NEMA 4) of the tension

6

electronics.

对于有隔离的IP 65-version (NEMA 4)压力电子仪器同步是不必要的

If two or more IP 20-version (unsealed) tension electronics are mounted in the same cabinet they must be synchronized.

如果两个或更多的IP 20-version (unsealed)压力电子仪器安装在同一个电器柜里那么它们必须同步。

Synchronization is done by interconnecting the “SYNC” terminals, screw terminal X1:14, of all the units and interconnecting screw terminal X:15 of all units. A twisted pair cable or a screened cable must be used.

同步是由内部SYNC端子完成的，用一根双绞或屏蔽电缆把所有装置的X1:14和X1:15分别连在一起。

If one unit is turned off or removed the remaining units are still synchronized. 如果一套装置断电或拆离，剩下的装置任然保持同步。

2.4.2 Mounting the Tension Electronics PFEA111/112(安装张力测量装置) 2.4.2.1 IP 65-version (NEMA 4)

The electronic unit is delivered in an enclosure intended for wall mounting.

张力测量装置交付时是设计成墙挂式的。

When choosing a place for installation, check that there will be space to open the enclosure lid fully. Also check that there is enough working space in front of the enclosure.

在选择安装地点时，需留出打开盖子的空间，同时还得检查装置前面是否有足够的操作空间。

The enclosure is fitted with six cable glands. 隔离栅配有6个走线密封管

Inches (英寸) for cable 走线孔 mounting holes 安装孔

Connect the cables to terminals according cable diagrams in Appendix (B, C, D, or E) depending on installed load type.

参照附录 (B, C, D, or E) 中接线图连接电缆到接线端子 NOTE (注意)

Do not connect solid conductors to terminals. Do not crimp pins to stranded cores. 固体导体不直接连接在接线端子上，不要卷折插脚成多股芯。 NOTE (注意)

The incoming mains voltage must be provided with fuses and a means of disconnection outside the tension electronics.

输入电源必须接有保险丝和在压力测量器外的空开。

2.4.2.2 IP 20-version (Unsealed)

Connect the cables to terminals according cable diagrams in Appendix (B, C, D, or E) depending on installed load cell type.

连接端子的电缆可依据已安装的压头选择，见附录B,C,D或E NOTE (注意)

Do not connect solid conductors to terminals. Do not crimp pins to stranded cores. 固体导体不直接连接在接线端子上，不要卷折插脚成多股芯。

2.4.3 Earthing (接地)

For trouble free operation, the earthing must be carried out carefully. Note the following:

· If the free (unscreened) length exceeds 0.1m (4in) the individual pairs of power and signal

conductors must be twisted separately.

7

· The external protective earth (PE) cable must be attached to one of the earth bar screw clamps. · All the cable screens have to be connected to the earth bar and the length of the screen

connection must be less than 50mm (2 in).

接地必须小心谨慎，按照下列操作可避免麻烦：

·如果超出屏蔽范围0.1米，信号电缆和电源 …… 此处隐藏：3787字，全部文档内容请下载后查看。喜欢就下载吧 ……