1756-IF8I 模拟量输入模块 接收电流和电压信号
【产品详情】
Allen-Bradley 1756-IF8I 是一款 ControlLogix 模拟量输入模块,具有八 (8) 个独立隔离的模拟量输入通道。它设计用于接收电流和电压信号,范围为 ±10.5V、0 -10.5V、0-5V 和 0-20 mA。它具有 24 位的非常高的转换分辨率,这使得该模块兼容需要高精度读数的应用。分辨率为 16 位。
模块各通道均具有过压保护、短路检测、模块温度范围误差、数据报警如斜坡速率、过程报警等模块诊断功能。
该模块的 24 位分辨率提供 1.49 ?电压输入为 +/- 10.5 VDC、0 - 10.5VDC 和 0-5.25 VDC 的 V/count,而对于电流输入,0-21 mA 信号的实际分辨率为 2.99 nA/计数。此分辨率不是任何模拟模块的标准分辨率,因为标准模拟输入的典型分辨率仅为 13-16 位分辨率。
端接的模拟信号能够与实际过程变量接口。这是可编程逻辑控制器 (PLC) 通过允许集成到基于计算机的控制系统(例如人机界面 (HMI)、监控和数据采集 (SCADA) 以及分布式控制系统 (DCS))来监视或控制过程的必要条件。
该模块可安装在任何 ControlLogix 机箱上,无论是本地、分布式还是远程 I/O 安装。它需要 1756-TBCH 和 1756-TBS6H 可拆卸接线端子进行信号接线,该模块的适当电线尺寸范围为 0.33 至 2.1 mm2(22 至 14 AWG)实心或绞合屏蔽铜线。
Allen-Bradley 1756-IF8I 是一款八 (8) 点通用隔离模拟电流/电压输入模块。它需要一个 36 针可拆卸接线端子 (RTB),然后才能与输入信号连接。1756-IF8I 通过其 24 位转换分辨率提供更高的精度,并支持 2 线或 40 线变送器配置。
该模块不提供实时采样 (RTS) 参数,信道采样率仅由请求的数据包间隔 (RPI) 值决定。该模块的输入范围和实际分辨率为 -10 至 10 伏,1.49 伏/计数,0 至 10 伏,1.49 伏/计数伏特/计数,0 至 5 伏特,1.49 ?伏特/计数,以及 0 至 20 毫安,2.99 nA/计数。需要注意的是,源电流限制在45毫安左右,能够直接为两线制变送器供电,而无需外部电源。
1756-IF8I 模拟量输入模块 接收电流和电压信号
【英文介绍】
The Allen-Bradley 1756-IF8I is a ControlLogix analog input module with eight (8) independently isolated analog input channels. It is designed to receive current and voltage signals in the range of ±10.5V, 0-10.5V, 0-5V and 0-20 mA. It has a very high conversion resolution of 24 bits, which makes the module compatible with applications requiring high-precision readings. The resolution is 16 bits.
Each channel in the module has module diagnostic functions such as overvoltage protection, short circuit detection, module temperature range error, data alarm such as slope rate and process alarm.
The module offers a 24-bit resolution of 1.49? Voltage inputs are V/count of +/- 10.5VDC, 0-10.5VDC, and 0-5.25VDC, while for current inputs, the actual resolution of the 0-21 mA signal is 2.99 nA/ count. This resolution is not the standard resolution for any analog module, as the typical resolution for standard analog inputs is only 13-16 bit resolution.
The terminated analog signal can be interfaced with real process variables. This is necessary for programmable logic controllers (PLCS) to monitor or control processes by allowing integration into computer-based control systems such as human machine interfaces (HMI), supervisory control and data acquisition (SCADA), and distributed control systems (DCS).
The module can be installed on any ControlLogix chassis, whether local, distributed, or remote I/O installation. It requires 1756-TBCH and 1756-TBS6H detachable terminals for signal wiring, and appropriate wire sizes for this module range from 0.33 to 2.1 mm2 (22 to 14 AWG) solid or stranded shielded copper wire.
The Allen-Bradley 1756-IF8I is an eight (8) point universal isolated analog current/voltage input module. It requires a 36-pin detachable terminal (RTB) before it can be connected to the input signal. The 1756-IF8I offers increased accuracy through its 24-bit conversion resolution and supports 2-wire or 40-wire transmitter configurations.
The module does not provide real-time sampling (RTS) parameters, and the channel sampling rate is determined only by the requested packet interval (RPI) value. The input range and actual resolution of the module are -10 to 10 volts, 1.49 volts/count, 0 to 10 volts, 1.49 volts/count volts/count, 0 to 5 volts, 1.49 volts/count. Volts/count, and 0 to 20 MA, 2.99 nA/ count. It should be noted that the source current is limited to about 45 mA, which can directly power the two-wire transmitter without the need for an external power supply.
1756-IF8I 模拟量输入模块 接收电流和电压信号
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