EMG LID43.03反光源模块
*上升、下降、STEL和LTEL/速率报警输出。
*更新单个或多通道报警的报警。
*远程禁止和复位输入。
*继电器输出接通和/或断开的时间延迟。
*可选0-20mA或4-20mA隔离监视器输出。
*使用专用工程卡易于校准和操作。
*EMC兼容。
*通过工程卡提供的选项：
*主报警更新。
*事件打印机。
使用Modbus协议进行串行通信。
建筑该系统由单个1英寸（2.54cm）宽的卡组成，卡安装在
刚性定制机架，设计用于安装欧式机架机柜。两个机架宽度
可获得：a、 19英寸，带17个卡槽，最多可容纳16个通道控制卡和一张工程卡。
b、 半19英寸，带9个卡槽，最多可容纳8个通道控制卡和工程卡。
每个子机架包含一个工程卡和一个直流输入卡，用于：组成机架系统
该系统旨在满足不同的客户接线要求
配置，为了实现这一点，控制功能被分离
来自继电器和现场接线连接。单一气体通道
因此，检测包括：
a、 传感器驱动模块
为了实现与一系列不同输入的兼容性，以及传感器类型，控制传感器所需的电路为
安装在独立的插入式传感器驱动模块上。这些模块直接插入通道控制卡，并在出厂时安装适合。有两个不同的模块，一个用于催化输入一个用于4-20mA输入。
单通道控制卡
每个单通道控制卡独立运行，并且
包含提供传感器所需的所有电子电路
该通道气体的驱动、报警检测和液位显示侦查
c、 现场接口或中继卡
现场接口/继电器卡提供接口连接在控制卡及其各自的现场连接之间气体传感器。此外，继电器卡还向现场连接。
* Rising, falling, STEL and LTEL / RATE alarm outputs.
* Update alarm on individual or multi channel alarms.
* Remote inhibit and reset inputs.
* Time delay on switch on and/or switch off of relay outputs.
* Optional 0 - 20mA or 4 - 20mA isolated monitor output.
* Easy to calibrate and operate using a dedicated Engineering card.
* EMC compliant.
* Options provided via Engineering Card:
* Master Alarm Update.
* Event Printers.
* Serial communication using Modbus protocol.
CONSTRUCTION
The system consists of individual 1'' (2.54cm) wide cards fitted to a
rigid custom rack designed to fit Euro rack cabinets. Two rack widths
are available:
a. 19 inch with 17 card slots to house up to 16 Channel Control Cards
and an Engineering Card.
b. Half 19 inch with nine card slots to house up to eight Channel
Control Cards and an Engineering Card.
Each sub-rack contains an Engineering Card and a DC Input Card to
make up the rack system
The system is designed to meet the differing customer wiring
configurations and to achieve this the control functions are split away
from the relays and field wiring connections. A single channel of gas
detection therefore consists of:
a. Sensor Drive Module
In order to achieve compatibility with a range of different inputs and
sensor types, the circuitry necessary to control the sensor is
housed on an independent plug-in Sensor Drive Module. These
modules plug directly into a Channel Control Card and are factory
fitted. There are two different modules, one for catalytic inputs and
one for 4 - 20mA inputs.
b. Single Channel Control Card
Each Single Channel Control Card functions independently and
contains all the necessary electronic circuitry to provide the sensor
drive, alarm detection and gas level display for that channel of gas
detection.
c. Field Interface or Relay Card
The Field Interface/Relay Cards provide the interface connections
between the Control Cards and their respective field connected
gas sensor. In addition, Relay Cards provide alarm outputs to the
field connections.
