基本細(xì)節(jié):1746-A7 SLC 500 機(jī)箱 通信適配器模塊以及輸入和輸出模塊

1746-A7 是一款 SLC 500 機(jī)箱，帶有七 （7） 個(gè)插槽。這款 SLC 500 機(jī)箱重 1.1 千克（2.4 磅），尺寸為 28.2 x 17.1 x 14.5 厘米或 11.3 x 6.8 x 5.8 英寸。
1746-A7 包含模塊化處理器、通信適配器模塊以及輸入和輸出模塊。該機(jī)箱內(nèi)置 7 個(gè)插槽，是 SLC 500 模塊化機(jī)箱的一部分，可靈活配置系統(tǒng)。在模塊化系統(tǒng)中，每個(gè)機(jī)箱都需要自己的電源。SLC 500 1746-A7 模塊化機(jī)箱可作為一個(gè)獨(dú)立單元在一個(gè)系統(tǒng)中使用，也可以與另一個(gè)或兩個(gè)本地機(jī)箱配合使用。機(jī)箱互連電纜可用于構(gòu)建多個(gè)機(jī)箱配置并延長信號(hào)線。這最多可以創(chuàng)建總共 30 個(gè) I/O 插槽。將機(jī)箱與不同長度的 1746-C9 電纜或 1746-C16 電纜垂直互連。兩根電纜都具有剛性、不彎曲的收縮包裝，用于在將模塊與另一個(gè)下方連接時(shí)消除應(yīng)力。對(duì)于水平布局，請(qǐng)使用 1746-C7 電纜。請(qǐng)勿使用任何其他電纜進(jìn)行設(shè)置。較長的電纜可能會(huì)影響數(shù)據(jù)通信完整性，從而導(dǎo)致不安全的操作。
從 1746-A7 機(jī)箱到接地總線的接地連接可降低電阻。接地時(shí)，請(qǐng)勿將一個(gè)凸耳直接放在另一個(gè)凸耳上。壓縮會(huì)導(dǎo)致這些連接松動(dòng)。1746-A7 的最大背板電流為 5.1 V DC（10A）或 24 V（2.88A）直流電。為獲得最佳性能，請(qǐng)?jiān)?0 攝氏度至 60 攝氏度（32 至 140 華氏度）的溫度和 5% 至 95% 的相對(duì)濕度（無冷凝）下運(yùn)行。
1746-A7 是一款 SLC 500 機(jī)箱，可安裝到 SLC 500 模塊，例如 SLC 處理器、SLC IO 模塊、SLC 通信適配器和專用模塊。
1746-A7 具有七 （7） 個(gè)插槽，通過從控制器所在的主機(jī)箱連接另外兩 （2） 個(gè)機(jī)箱，可以擴(kuò)展至 21 個(gè)模塊。這是通過使用部件號(hào)為 1746-C9、1746-C7 的互連電纜和其他不同長度的互連電纜來完成的。每個(gè)機(jī)箱都需要單獨(dú)的電源，但只需要一個(gè) SLC 500 處理器。此處理器應(yīng)固定或安裝在主機(jī)箱上。擴(kuò)展機(jī)箱被視為遠(yuǎn)程 IO 機(jī)架。
SLC 500 配備其他型號(hào)的底盤，包括 1746-A13、1746-A10 和 1746-A4。所有這些機(jī)箱，包括 1746-A7 都有一個(gè)嵌入式電子電路，該電路連接到電源插槽。該電路用作背板，將電源分配給插入的模塊。它還充當(dāng)處理器和模塊之間交換的信息，因此，沒有機(jī)箱就無法操作 SLC 500 模塊化控制器。

1746-A7

The 1746-A7 is an SLC 500 chassis with seven (7) slots. The SLC 500 case weighs 1.1 kilograms (2.4 pounds) and measures 28.2 x 17.1 x 14.5 centimeters or 11.3 x 6.8 x 5.8 inches.
The 1746-A7 contains a modular processor, communication adapter module, and input and output modules. The seven slots are part of the SLC 500 modular chassis for flexible system configuration. In a modular system, each case requires its own power supply. The SLC 500 1746-A7 modular chassis can be used as a standalone unit in one system or in combination with another or two local chassis. Chassis interconnection cables can be used to build multiple chassis configurations and extend signal lines. This can create up to a total of 30 I/O slots. Vertically interconnect the chassis with 1746-C9 cables or 1746-C16 cables of different lengths. Both cables have rigid, non-bending shrink wrap for stress relief when connecting the module to the underside of the other. For horizontal layout, use 1746-C7 cable. Do not use any other cable for setup. Longer cables may compromise data communication integrity, resulting in unsafe operations.
A ground connection from the 1746-A7 chassis to the ground bus reduces resistance. Do not place one lug directly on the other lug when grounded. Compression can cause these connections to loosen. The maximum backplane current of the 1746-A7 is 5.1 V DC (10A) or 24 V DC (2.88A). For best performance, run at temperatures ranging from 0 ° C to 60 ° C (32 ° F to 140 ° F) and 5 to 95% relative humidity (no condensation).
The 1746-A7 is an SLC 500 chassis that can be installed into SLC 500 modules, such as SLC processors, SLC IO modules, SLC communication adapters, and dedicated modules.
The 1746-A7 has seven (7) slots and can be expanded to 21 modules by connecting another two (2) enclosures from the main enclosure where the controller resides. This is done by using interconnect cables with part numbers 1746-C9, 1746-C7 and other interconnect cables of different lengths. Each case requires a separate power supply, but only one SLC 500 processor is required. The processor should be fixed or installed in the main box. An extension chassis is considered a remote I/O rack.
The SLC 500 was equipped with other chassis models, including the 1746-A13, 1746-A10, and 1746-A4. All of these cases, including the 1746-A7, have an embedded electronic circuit that is connected to a power socket. This circuit acts as a backplane to distribute power to the inserted module. It also acts as the information exchanged between the processor and the module, so the SLC 500 modular controller cannot be operated without a chassis.

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