PM866A-2控制單元模塊
在需要將現(xiàn)場(chǎng)接線連接到系統(tǒng)后部，機(jī)架中央分為前部和后部各部分由一塊印刷電路板背板組成，提供公共單個(gè)信道控制卡之間的功率和信號(hào)路由。接口時(shí)，通道控制卡安裝在機(jī)架前部/繼電器卡直接安裝在通道控制卡的后面機(jī)架后部。信道控制卡及其各自接口/繼電器卡通過(guò)插頭和插座互連安排在需要將現(xiàn)場(chǎng)接線連接到
系統(tǒng)前端、通道控制卡和接口/繼電器卡一個(gè)接一個(gè)安裝在6U機(jī)架中。底板印刷電路板仍然提供公共電源和信號(hào)短路時(shí)單個(gè)通道控制卡之間的路由卡后部的電纜將每個(gè)通道控制卡連接到：它們各自的接口/中繼卡。
使用以下方法對(duì)系統(tǒng)進(jìn)行簡(jiǎn)單的校準(zhǔn)和檢查：安裝在每個(gè)機(jī)架上的工程卡上的按鈕。更多可以使用以下之間的RS232鏈路執(zhí)行復(fù)雜配置：工程卡和外部IBM兼容個(gè)人運(yùn)行工程接口軟件的計(jì)算機(jī)。工程卡可以通過(guò)以下方式提供其他功能：插入工程卡的可選模塊。見(jiàn)下文：模塊操作說(shuō)明手冊(cè)：05701M5006 Modbus接口模塊
05701M5007事件打印模塊
05701M5008主報(bào)警更新模塊
5701控制系統(tǒng)如圖1所示，概述如下：5701系列控制系統(tǒng)是基于微處理器的系統(tǒng)其顯示連接的氣體檢測(cè)器的讀數(shù)和狀態(tài)。這個(gè)系統(tǒng)提供了復(fù)雜的報(bào)警處理設(shè)施，具有完整的維護(hù)能力。機(jī)架系統(tǒng)配有多個(gè)單通道控制卡
每個(gè)都有一個(gè)相關(guān)的現(xiàn)場(chǎng)/中繼卡，提供必要的傳感器輸入和可選繼電器輸出連接。簡(jiǎn)單警報(bào)
每個(gè)通道控制卡提供處理和操作。
復(fù)雜的報(bào)警處理是通過(guò)通過(guò)機(jī)架背板的指定數(shù)量的控制卡。每個(gè)機(jī)架上都安裝了一個(gè)工程卡，用于控制機(jī)架背板通信、控制卡詢問(wèn)和便于維護(hù)。此外，安裝到工程卡可以提供額外的系統(tǒng)輸出。系統(tǒng)電源、輔助電源和備用電池系統(tǒng)通常都通過(guò)直流輸入卡連接到機(jī)架，但是，對(duì)于高完整性系統(tǒng)安裝，電源可以是直接連接到每個(gè)單獨(dú)的控制卡。
In a system where the field wiring is required to be connected to the
rear of the system, the rack is centrally divided into front and rear
sections by a printed circuit board backplane which provides common
power and signal routeing between individual Channel Control Cards.
Channel Control Cards are fitted at the front of the rack while Interface/
Relay cards are fitted directly behind the Channel Control Cards at the
rear of the rack. The Channel Control Cards and their respective
Interface/Relay Cards are interconnected by a plug and socket
arrangement.
In a system where the field wiring is required to be connected to the
front of a system, the Channel Control Cards and Interface/Relay
Cards are mounted one above the other in a 6U rack. The backplane
printed circuit board still provides the common power and signal
routeing between the individual Channel Control Cards while short
cables at the rear of the cards connect each Channel Control Card to
their respective Interface/Relay Card.
Simple calibration and checking of the system is carried out using
push buttons on the Engineering Card fitted to each rack. More
complex configuration can be carried out using the RS232 link between
the Engineering Card and an external IBM compatible personal
computer running the engineering interface software.
Additional functions can be provided by the Engineering Card using
optional modules that plug into the Engineering Card. See the following
module operating instruction manuals:
05701M5006 Modbus Interface Module
05701M5007 Event Printing Module
05701M5008 Master Alarm Update Module
The 5701 Control System is shown in Figure 1 with an overview at
Figure 2.
INTRODUCTION
The 5701 Series Control System is a microprocessor based system
which displays the reading and status of connected gas detectors. The
system provides complex alarm handling facilities with a full
maintenance capability.
A rack system is fitted with a number of single channel control cards
each with an associated field/ relay card which provides the necessary
sensor input and optional relay output connections. Simple alarm
handling and operation is provided by each channel control card.
Complex alarm handling is achieved by communication between a
specified number of control cards via the backplane of the rack.
An engineering card is fitted to each rack and provides control of the
rack backplane communications, control card interrogation and
facilitates maintenance. In addition, optional modules fitted to the
engineering card can provide additional system outputs.
System power supplies, auxiliary power supplies and battery back up
systems are all normally connected to the rack via a DC Input Card,
however, for high integrity system installations power supplies can be
connected directly to each individual control card.
