FOXBORO FBM218 通讯冗余输出接口模块
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FBM218是一款通讯冗余输出接口模块，主要用于FOXBORO HART通讯，实现冗余输出功能。以下是关于FBM218的主要特点：
- 8个通道隔离输出通道，每个通道提供以下输出之一：标准4至20mA模拟输出信号、数字HART频移键控（FSK）信号叠加在4至20mA模拟输出信号上。
- FBM级冗余设计，提供冗余功能，增强了系统的稳定性。
- FSK调制解调器专用于每个输出通道，用于与HART现场设备的双向数字通信。
- 支持现场设备与Foxboro DCS接口所需的HART通用接口。
- 模块对提供FBM级冗余。
- 通道相互之间以及与地和模块逻辑之间电流隔离（光学和变压器隔离）。在隔离通道和大地（地）之间施加600 V交流电压一分钟后，模块可以承受而不会损坏。
- 通过冗余的2 Mbps HDLC现场总线与其相关的FCM或FCP通信。
- 工作温度范围为-20至60℃。
FBM01 P0400DA 0-20MA Input 8AI
FBM02 P0400YC thermocouple/millivolt input 8AI
FBM03 P0400YD thermal resistance input (three wire/four wire system) 8AI
FBM04 P0400YE 0-20MA I/O 4AI/4AO
FBM05 P0400YF redundancy 0-20MA input/output 4AI/4AO
FBM06 P0400YG frequency input/0-20MA output 4PI/4AO
FBM07 P0400YH contact/DC voltage input 16DI
FBM08 DM400YJ (P0400YJ) 120VAC AC status input 16DI
FBM09 CM400YK (P0400YK) contact/DC voltage input/contact output 8DI/8DO
FBM10 DM400YL (P0400YL) 120VAC AC status input/contact output (2A) 8DI/8DO
FBM11 CM400YM (P0400YM) 240VAC AC status input/contact output (1A) 8DI/8DO
FBM12 CM400YN (P0400YN) contact/DC voltage input extension 16DI
FBM13 DM400YP (P0400YP) 120VAC AC status input extension 16DI
FBM14 CM400YQ (P0400YQ) contact/DC voltage input/contact output extension 8DI/8DO
FBM15 DM400YR (P0400YR) 120VAC AC status input/contact output extension (2A) 8DI/8DO
FBM16 CM400YS (P0400YS) 240VAC AC status input/contact output extension (1A) 8DI/8DO
FBM17 DM400YT (P0400YT) 0-10V DC voltage/contact input/output 4AI/2AO/4DI/4DO
FBM18 P0400YV transmitter input 8AI
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