总线制消防电话系统构成
总线制消防电话系统构成

HDM3210消防电话总机为面板安装方式,可直接安装在标准立式机柜或琴台机柜上。应连接符合《GB 16806-2006消防联动控制系统》国家标准的,输出直流24V/10A消防电源及备电电池组。并可接入无极性的HD312消防电话分机及HD322消防电话插孔等,连接方式见上图。所有电话分机与电话总机的通话,是依靠同一线缆实现的。主线缆可实现对主分机通信、语音信号传递、消防直流电源输送等三项功能。电话线即总线极限长度可达1500米,总线缆应选择截面积≥RVS2.5mm2的铜芯双绞线,不线时注意不要与其他消防控制设备的通信总线同管穿线,尽量远离干扰源。电话总线上首先应接入总线制HD312消防电话分机及HD322消防电话插孔设备后,才能在其上外挂接入多线制HD210消防电话分机或HD230消防电话插孔,外挂的编码地址与被挂的总线制电话分机及电话插孔的编码地址相同,如上图在外挂多线制电话插孔HD230接入时,应将最末端的HD230的空闲接线端子上并接上随机配给的终端电阻51KΩ/0.25W,以保证可检测线路开路故障。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.