AI815 模拟量输入模块 可以配置为电压或电流输入

【产品详情】

AI815 模拟量输入模块有 8 个通道。这些模块可以配置为电压或电流输入。电流和电压信号不能在同一个 I/O 模块上混合。电压和电流输入能够承受至少 11 V 直流的过压或欠压。

电压输入的输入电阻大于10 M欧姆，电流输入的输入电阻为250欧姆。该模块将外部HART兼容变送器电源分配到每个通道。这增加了一个简单的连接，将电源分配给 2 线或 3 线变送器。发射器功率受到监控和电流限制。如果使用外部电源为HART变送器供电，则电源必须与HART兼容。

特点和优势

• 8 个通道，用于 0...20 mA、4...20 mA、0...5 V 或 1...5 V 直流，单端单极性输入

• 1 组 8 个通道与地隔离

• 12 位分辨率

• 每个通道的电流限制发射机电源

• HART直通通信

AI815 模拟量输入模块 可以配置为电压或电流输入

【英文介绍】

The AI815 analog input module has 8 channels. These modules can be configured for voltage or current input. Current and voltage signals cannot be mixed on the same I/O module. Voltage and current inputs can withstand overvoltage or undervoltage of at least 11 V DC.

The input resistance of the voltage input is greater than 10 M ohms and the input resistance of the current input is 250 ohms. The module distributes external HART compatible transmitter power to each channel. This adds a simple connection that distributes power to a 2 - or 3-wire transmitter. Transmitter power is monitored and current limited. If an external power supply is used to power the HART transmitter, the power supply must be compatible with HART.

Characteristics and advantages

8 channels for 0... 20 mA, 4... 20 mA, 0... 5 V or 1... 5 V DC, single-ended unipolar input

A group of 8 channels are isolated from the ground

12-bit resolution

Each channel current limits the transmitter power supply

HART direct communication

AI815 模拟量输入模块 可以配置为电压或电流输入

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