A-B罗克韦尔 1756-IF8I 不是伺服驱动器，而是一款模拟输入的I/O模块，属于罗克韦尔自动化（Rockwell Automation）的ControlLogix产品系列。以下是对该模块的详细介绍：

1. 基本功能：
• A-B罗克韦尔 1756-IF8I是一款模拟输入的I/O模块，用于工业自动化控制系统中，将模拟信号（如温度、压力、流量等）转换为数字信号，以供PLC（可编程逻辑控制器）进行处理和控制。
2. 技术参数：
• 通道数：具有8个模拟输入通道。
• 输入信号类型：可配置为+/-10VDC、0-10VDC、0-5VDC和0-20mA的输入信号。
• 分辨率：+/-10VDC的分辨率为15位，其他信号类型的分辨率为16位。
• 扫描时间：因接线配置而异，对于单线布线，扫描时间为16-488 ms；对于4点差动输入，扫描时间是8-244 ms；对于2点差动输入则为5-122 ms。
3. 设计特点：
• 采用模块化设计，可以方便地安装到ControlLogix控制系统中，满足不同应用的需求。
• 支持多种接线方式：单端接线、差分接线和高速模式差分接线。
• 使用Sigma-Delta转换方法，并以整数模式（左对齐，2秒补码）保存IEEE 32位浮点寄存器中的接收信号。
4. 应用场景：
• 该模块通常用于连接模拟信号生成仪器和设备，如变送器、传感器、信号分离器、信号隔离器、面板仪表等。
• 在工业自动化控制系统中，用于采集模拟信号，并将其转换为数字信号，以供PLC进行进一步的处理和控制。
5. 其他信息：
• 1756-IF8I模块的安装实例数量实际上没有限制，大多数ControlLogix控制器能够提供多达4000个模拟I/O信号。
• 可沿控制器安装在本地机箱中或安装在分布式I/O机架中。

The A-B Rockwell 1756-IF8I is not A servo drive, but an analog input I/O module from Rockwell Automation's ControlLogix product family. The following is a detailed introduction to the module:

Basic functions:

The A-B Rockwell 1756-IF8I is an analog input I/O module used in industrial automation control systems to convert analog signals (such as temperature, pressure, flow, etc.) into digital signals for PLC (Programmable logic controller) processing and control.

Technical parameters:

Number of channels: Has 8 analog input channels.

Input signal type: Can be configured as +/-10VDC, 0-10VDC, 0-5VDC, and 0-20mA input signals.

Resolution: 15 bits for +/-10VDC and 16 bits for other signal types.

Scanning time: varies depending on wiring configuration, for single wire wiring, scanning time is 16-488 ms; For a 4-point differential input, the scan time is 8-244 ms; For 2-point differential inputs it is 5-122 ms.

Design features:

With modular design, it can be easily installed into the ControlLogix control system to meet the needs of different applications.

Supports multiple connection modes: single-ended connection, differential connection, and high-speed differential connection.

The received signal in an IEEE 32-bit floating-point register is saved using the Sigma-Delta conversion method and in integer mode (left-justified, 2-second complement).

Application scenario:

The module is commonly used to connect analog signal generation instruments and devices such as transmitters, sensors, signal separators, signal isolators, panel meters, etc.

In industrial automation control systems, it is used to collect analog signals and convert them into digital signals for further processing and control by PLC.

Additional information:

There is virtually no limit to the number of installed instances of the 1756-IF8I module, with most ControlLogix controllers capable of delivering up to 4000 analog I/O signals.

It can be installed along the controller in a local chassis or in a distributed I/O rack.