83SR04C-E模块,ABB使用区域
紧凑型设计FBM201/b/c/d模块设计紧凑，采用坚固的挤压铝合金外壳电路的物理保护。
外壳专为安装FBM而设计，提供各级环保，高达符合ISA标准S71.04的恶劣环境。
高精度为了获得高精度，模块在每个通道的基础上结合了sigma delta数据转换，这可以每25 ms提供一个新的模拟输入读数，
以及可配置的集成期，以删除过程噪声和电源线频率噪声。
83SR04C-E模块每个时间段，FBM转换每个模拟输入数字值，平均这些值时间段，并将平均值提供给控制器。
易于拆卸/更换模块可以在没有拆除现场设备终端电缆、电源或通信布线。
视觉指示器集成到模块前部提供可视状态指示现场总线模块（FBM）功能。
模块化基板安装模块安装在模块化基板上（参见图1）最多可容纳四个或八个FBMs。模块化基板为DIN导轨
安装或机架安装，包括信号冗余现场总线连接器，冗余独立直流电源和终端电缆。
现场总线通信现场总线通信模块或控制器
83SR04C-E模块处理器与冗余2 Mbps模块接口FBMs使用的现场总线。FBM201/b/c/d
模块接受来自任一路径的通信（A冗余2 Mbps现场总线的
路径故障或在系统级切换模块通过激活的路径终端组件
现场输入/输出信号通过以下方式连接到FBM子系统
DIN导轨安装TA（见图1）。使用的助教关于FBM201/b/c/d模块
COMPACT DESIGN
The FBM201/b/c/d modules have a compact design,
with a rugged extruded aluminum exterior for
physical protection of the circuits. Enclosures
specially designed for mounting the FBMs provide
various levels of environmental protection, up to
harsh environments per ISA Standard S71.04.
HIGH ACCURACY
For high accuracy, the modules incorporate sigma
delta data conversion on a per-channel basis, which
can provide a new analog input reading every 25 ms,
and a configurable integration period to remove any
process noise and power-line frequency noise.
Each time period, the FBM converts each analog
input to a digital value, averages these values over
the time period, and provides the averaged value to
the controller.
EASY REMOVAL/REPLACEMENT
The modules can be removed/replaced without
removing field device termination cabling, power or
communications cabling.
VISUAL INDICATORS
Light-emitting diodes (LEDs) incorporated into the
front of the modules provide visual status indications
of Fieldbus Module (FBM) functions.
MODULAR BASEPLATE MOUNTING
The modules mount on a modular baseplate (see
Figure 1) which accommodates up to four or eight
FBMs. The modular baseplate is either DIN rail
mounted or rack mounted, and includes signal
connectors for redundant fieldbus, redundant
independent dc power, and termination cables.
FIELDBUS COMMUNICATION
A Fieldbus Communication Module or a Control
Processor interfaces the redundant 2 Mbps module
Fieldbus used by the FBMs. The FBM201/b/c/d
modules accept communication from either path (A
or B) of the redundant 2 Mbps fieldbus – should one
path fail or be switched at the system level, the
module continues communication over the active
path.
TERMINATION ASSEMBLIES
Field I/O signals connect to the FBM subsystem via
DIN rail mounted TAs (see Figure 1). The TAs used
with the FBM201/b/c/d modules are described in
