4000103-510 Triconex 输入输出卡件

4000103-510 Triconex 输入输出卡件

4000103-510 Triconex 输入输出卡件

电源冗余一般可以采取的方案有容量冗余、冗余冷备份、并联均流的N+1备份、冗余热备份等方式。容量冗余是指电源的最大负载能力大于实际负载，这对提高可靠性意义不大。

冗余冷备份是指电源由多个功能相同的模块组成，正常时由其中一个供电，当其故障时，备份模块立刻启动投入工作。这种方式的缺点是电源切换存在时间间隔，容易造成电压豁口。

冗余电源接法

传统的冗余电源设计方案是由2个或多个电源通过分别连接二极管阳极，以“或门”的方式并联输出至电源总线上。可以让1个电源单独工作，也可以让多个电源同时工作。当其中1个电源出现故障时，由于二极管的单向导通特性，不会影响电源总线的输出。

4000103-510 Triconex 输入输出卡件

Generally, power supply redundancy can be adopted in capacity redundancy, redundant cold backup, parallel current sharing N+1 backup, and redundant hot backup. Capacity redundancy means that the maximum load capacity of the power supply is greater than the actual load, which is of little significance to improve reliability.

In redundant cold backup mode, the power supply consists of multiple modules with the same functions. Normally, one of the modules supplies power. When the backup module fails, the backup module starts to work immediately. The disadvantage of this method is that there is a time interval for power switching, which is easy to cause voltage gaps.

Redundant power connection

The traditional redundant power supply design scheme consists of two or more power supplies connected to the diode anode respectively, and the output is connected to the power bus in parallel in the way of "or gate". You can make 1 power supply work alone, or you can make multiple power supplies work simultaneously. When one of the power supplies fails, the output of the power bus will not be affected due to the single-channel characteristic of the diode.