EMG LID43.03反光源模塊
*上升、下降、STEL和LTEL/速率報警輸出。
*更新單個或多通道報警的報警。
*遠程禁止和復位輸入。
*繼電器輸出接通和/或斷開的時間延遲。
*可選0-20mA或4-20mA隔離監視器輸出。
*使用專用工程卡易于校準和操作。
*EMC兼容。
*通過工程卡提供的選項：
*主報警更新。
*事件打印機。
使用Modbus協議進行串行通信。
建筑該系統由單個1英寸（2.54cm）寬的卡組成，卡安裝在
剛性定制機架，設計用于安裝歐式機架機柜。兩個機架寬度
可獲得：a、 19英寸，帶17個卡槽，最多可容納16個通道控制卡和一張工程卡。
b、 半19英寸，帶9個卡槽，最多可容納8個通道控制卡和工程卡。
每個子機架包含一個工程卡和一個直流輸入卡，用于：組成機架系統
該系統旨在滿足不同的客戶接線要求
配置，為了實現這一點，控制功能被分離
來自繼電器和現場接線連接。單一氣體通道
因此，檢測包括：
a、 傳感器驅動模塊
為了實現與一系列不同輸入的兼容性，以及傳感器類型，控制傳感器所需的電路為
安裝在獨立的插入式傳感器驅動模塊上。這些模塊直接插入通道控制卡，并在出廠時安裝適合。有兩個不同的模塊，一個用于催化輸入一個用于4-20mA輸入。
單通道控制卡
每個單通道控制卡獨立運行，并且
包含提供傳感器所需的所有電子電路
該通道氣體的驅動、報警檢測和液位顯示偵查
c、 現場接口或中繼卡
現場接口/繼電器卡提供接口連接在控制卡及其各自的現場連接之間氣體傳感器。此外，繼電器卡還向現場連接。
* 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.
