Allen-Bradley 1746-OV8是SLC 500系统的数字I/O模块。这是一个电流吸收24V DC输出模块，它有广泛的应用。1746-OV8模块的工作电压为10-50V DC(吸电流), 8路输出，每路8点。它的背板电流消耗在5V DC时为135mA，在24V DC时为0mA。它在导通状态下的最大信号延迟为0.1毫秒，在关断状态下的最大信号延迟为1毫秒。1746-OV8的每个输出和每个模块的持续电流分别为30°C时的1A和8A以及60°C时的0.5A和4A。它的最大关态漏电流为1mA，最大散热为6.9W，在1A时最大导通压降为1.2V，每点最大浪涌电流为3A。1746-OV8还配有彩色编码的可拆卸接线板。对于布线，可以使用预布线电缆和1492接口模块。1746-OV8模块在端子处有自升式压板，最多可接受两根14 AWG (2 mm2)电线。为了显示I/O点的状态，它的前面板上有LED指示灯。1746-OV8适用于清洁干燥的工业环境，工作温度为0-60°C，工作冲击为30g。

艾伦-布拉德利1746-OV8是一个离散输出模块。该模块是SLC 500产品系列的一部分。它具有八(8)个吸收输出通道，工作电压范围为10-50伏DC。

1746-OV8有一组输出。它具有0.135安培@ 5伏特DC的底板电流消耗，当与电阻性负载一起使用时，对于从关到开的转换，单个信号延迟为0.1毫秒，对于从开到关的转换，单个信号延迟为1.0毫秒。最大关断状态漏电流为1 mA，最小负载电流为1 mA。

1746-OV8的每点连续输出电流为1.0安培(30°C(86°F)或0.50安培(60°C(140°F))，而总连续输出电流(每个模块)为8.0安培(30°C(86°F)或4.0安培(60°C(140°F))。每个通道都有10毫秒的额定3.0安培浪涌电流。

1746-OV8占用了SLC 500机箱的一个插槽。该模块支持安装到分布式I/O站、扩展机架或本地模块。

该模块的安装实例数量没有实际限制。用户可以根据需要使用该模块来满足应用要求。实例的数量仅受处理器或嵌入式存储器支持的I/O的限制。此外，机架和可用插槽的数量也会限制安装实例的数量。

1746-OV8

Allen Bradley 1746-OV8 is a digital I/O module for the SLC 500 system. This is a current absorbing 24V DC output module that has a wide range of applications. The working voltage of the 1746-OV8 module is 10-50V DC (suction current), with 8 outputs, each with 8 points. Its backplane current consumption is 135mA at 5V DC and 0mA at 24V DC. It has a maximum signal delay of 0.1 milliseconds in the on state and 1 millisecond in the off state. The continuous current of each output and module of 1746-OV8 is 1A and 8A at 30 ° C and 0.5A and 4A at 60 ° C, respectively. Its maximum off state leakage current is 1mA, maximum heat dissipation is 6.9W, maximum conduction voltage drop is 1.2V at 1A, and maximum surge current at each point is 3A. 1746-OV8 also comes with a color coded detachable terminal block. For wiring, pre wired cables and 1492 interface modules can be used. The 1746-OV8 module has a self elevating pressure plate at the terminals and can accept up to two 14 AWG (2 mm2) wires. To display the status of the I/O points, there are LED indicators on the front panel. 1746-OV8 is suitable for clean and dry industrial environments, with a working temperature of 0-60 ° C and a working impact of 30g.

The Allen Bradley 1746-OV8 is a discrete output module. This module is part of the SLC 500 product series. It has eight (8) absorption output channels and a working voltage range of 10-50 volts DC.

1746-OV8 has a set of outputs. It has a bottom plate current consumption of 0.135 amperes @ 5 volts DC, and when used with resistive loads, a single signal delay of 0.1 milliseconds for off to on conversion and 1.0 milliseconds for on to off conversion. The maximum off state leakage current is 1 mA, and the minimum load current is 1 mA.

The continuous output current at each point of 1746-OV8 is 1.0 ampere (30 ° C (86 ° F) or 0.50 ampere (60 ° C (140 ° F)), while the total continuous output current (per module) is 8.0 ampere (30 ° C (86 ° F) or 4.0 ampere (60 ° C (140 ° F)). Each channel has a rated 3.0 ampere surge current of 10 milliseconds.

1746-OV8 occupies one slot in the SLC 500 chassis. This module supports installation into distributed I/O stations, expansion racks, or local modules.

There is no actual limit on the number of installed instances for this module. Users can use this module as needed to meet application requirements. The number of instances is only limited by the I/O supported by the processor or embedded memory. In addition, the number of racks and available slots will also limit the number of installed instances.

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