總線制消防電話系統構成
總線制消防電話系統構成

HDM3210消防電話總機為面板安裝方式,可直接安裝在標準立式機柜或琴臺機柜上。應連接符合《GB 16806-2006消防聯動控制系統》國家標準的,輸出直流24V/10A消防電源及備電電池組。并可接入無極性的HD312消防電話分機及HD322消防電話插孔等,連接方式見上圖。所有電話分機與電話總機的通話,是依靠同一線纜實現的。主線纜可實現對主分機通信、語音信號傳遞、消防直流電源輸送等三項功能。電話線即總線極限長度可達1500米,總線纜應選擇截面積≥RVS2.5mm2的銅芯雙絞線,不線時注意不要與其他消防控制設備的通信總線同管穿線,盡量遠離干擾源。電話總線上首先應接入總線制HD312消防電話分機及HD322消防電話插孔設備后,才能在其上外掛接入多線制HD210消防電話分機或HD230消防電話插孔,外掛的編碼地址與被掛的總線制電話分機及電話插孔的編碼地址相同,如上圖在外掛多線制電話插孔HD230接入時,應將最末端的HD230的空閑接線端子上并接上隨機配給的終端電阻51KΩ/0.25W,以保證可檢測線路開路故障。Above picture shows the system wiring, HDM3210 addressable fire telephone panel can be mounted on rack, requires 24V/10A power supply. HD312 addressable telephone extension and HD322 addressable telephone jack are nonpolar connected in the system. The bus-line distance can be 1500 meters at maximum when applying ≥RVS2.5mm2 cable. HD210 or HD230 conventional telephone extensions or jacks can be added on HD312 or HD322, sharing the same address within the system. The whole loop is real time monitored for short or open cases by adding 51KΩ/0.25W resistor at the end of the loop.