详细介绍:
2.3.1.2 电源输入/报警连接用的接线端
背板上备有12个接线端用于电源输入和报警连接。对于每一个电源模件内的电源备有单独的加有标号的端子。
#1电源端子 说明
L 火线(热线)或DC+
N 中线或DC-
机架的地,保护接地
NO NO机架报警接点
C 公共报警接点
NC NC机架报警接点
#2电源端子 说明
L 火线(热线)或DC+
N 中线或DC-
机架的地,保护接地
NO NO机架报警接点
C 公共报警接点
NC NC机架报警接点
电源输入线每一电源为额定最小240瓦。Tricon机架的最小功耗在带有三个主处理器和一个电源模件时为50瓦。其它的功耗用于安装在机架内的I/O和通讯模件。进一步的资料见4.1.6节的“各种不同系统配置时的电源支持”。
警告!
不要在危险区使用报警接点
2.3.1.3 状态指示灯
每一电源模件前面的LED指示器标明模件的状态:
指示器 颜色 说明
PASS 绿 输入电源OK
FAULT 红 电源模件故障
ALARM 红 有机架报警
TEMP 黄 超温情况
BATT LOW 黄 电源电压过低报警
2.3.1.4 报警用途的接线端
大的接线条上也具有一组三个螺钉接点,用于特定的报警:
—常开接点
—公共点
—常闭接点
标有“NC”的接点在发生报警情况时闭合。标有“NO”的接点在发生报警情况时断开。进一步的资料参阅本章后面所叙述的“报警说明”一节。
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