1756-OB8I 直流隔离输出模块 具有先导负载

【产品详情】

Allen-Bradley 1756-OB8I 是一款 ControlLogix 直流隔离输出模块。它具有 8 个独立隔离的输出，并具有先导负载。此模块尚未熔断，为了帮助保护输出，建议使用熔断的 IFM。

在兼容机箱中安装 1756-OB8I 模块之前，需要 36 针可拆卸接线端子外壳 （RTB）。对于此模块，您只能使用 1756-TBCH 或 1756-TBS6H RTB。 请记住先将机箱接地并安装，然后再使用 RTB 安装模块。

1756-OB8I 模块可用的通信格式包括仅侦听机架优化、仅侦听输出数据、计划输出数据、输出数据和机架优化。该模块还具有一项功能，允许您在故障或程序模式下更改每个点的状态，可用选项包括开、关和保持上一个状态，并将“关”设置为默认选项。

1756-OB8I 模块是 12/24 伏直流电源模块，工作电压范围在 10 至 30 伏直流之间。其总背板功率为 0.89W，5.1 V 时电流消耗为 165 mA，24 V 时电流消耗为 2 mA。其浪涌电流为 4 A，每点 10 ms，在 140 华氏度下每秒可重复一次。它的最小负载电流为 2 mA，每点的最大电流为 140 华氏度，在 140 华氏度时每个模块的最大电流为 16 A。该模块的最大导通状态压降为 0.5 V DC（2 A），最大关断状态泄漏电流为每点 0.5 mA。

在140华氏度时，其最大功耗为4.6W，散热为15.70 BTU/hr。该模块已在 1350 伏交流电下进行了 2 秒的常规测试，并具有 250 伏的连续隔离电压

1756-OB8I 直流隔离输出模块 具有先导负载

【英文介绍】

The Allen-Bradley 1756-OB8I is a ControlLogix DC isolated output module. It has 8 independently isolated outputs and has a pilot load. This module has not been blown, and to help protect the output, a blown IFM is recommended.

Before installing the 1756-OB8I module in a compatible chassis, a 36-pin detachable terminal housing (RTB) is required. For this module, you can only use the 1756-TBCH or 1756-TBS6H RTB. Remember to ground and install the chassis first, and then install the module using RTB.

Communication formats available for the 1756-OB8I module include Listen only rack optimization, listen only output data, schedule output data, output data, and rack optimization. The module also has a feature that allows you to change the state of each point in fault or program mode, with options available including on, off, and hold the previous state, with "Off" set as the default option.

The 1756-OB8I module is a 12/24 volt DC power supply module with an operating voltage range between 10 and 30 volts DC. Its total backplane power is 0.89W, current consumption is 165 mA at 5.1 V, and current consumption is 2 mA at 24 V. Its surge current is 4 A, 10 ms per point, and can be repeated once per second at 140 degrees Fahrenheit. It has A minimum load current of 2 mA, a maximum current of 140 degrees Fahrenheit per point, and a maximum current of 16 A per module at 140 degrees Fahrenheit. The module has A maximum on-state voltage drop of 0.5 V DC (2 A) and a maximum off state leakage current of 0.5 mA per point.

At 140 degrees Fahrenheit, it has a maximum power consumption of 4.6W and a heat dissipation of 15.70 BTU/hr. The module has been routinely tested for 2 seconds at 1350 volts AC and has a continuous isolation voltage of 250 volts

1756-OB8I 直流隔离输出模块 具有先导负载

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