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1756-PAR2 冗余电源系统
冗余电源系统为关键应用中使用的机箱提供额外的正常运行时间保护。两个远程安装的电源被设计为共享机箱所需的电流。两种电源可供选择，交流(目录号1756-PA75R/A或1756-PAXTR)和直流(目录号1756-PB75R/A或1756-PAR2)版本，可以混合或匹配串联使用。
如果一个电源出现故障，剩余的电源可以满足机箱的全部负载，而不会中断机箱的活动。ControlLogix®冗余电源系统的设计只考虑电源的运行异常(不包括机箱适配器和电源线)。
1756-PAR2机箱适配器是一种无源器件。机箱适配器将一个或两个ControlLogix冗余电源的电源输送到ControlLogix机箱背板上的单个电源连接器上。
1756-PAR2 冗余电源系统
The redundant power supply system provides additional uptime protection for chassis that are used in critical applications. The two remotely mounted supplies aredesigned to share the current required by the chassis. Two supplies are available in AC (catalog number 1756-PA75R/A or 1756-PAXTR) and DC (catalog number 1756-PB75R/A or 1756-PAR2) versions that can be mixed or matched when used in tandem.
If one power supply fails, the remaining supply accommodates the entire load of the chassis without disruption to chassis activity. The ControlLogix® redundant powersupply system is designed to account for operational anomalies in only the power supply (the chassis adapter and power supply cables are excluded)
The 1756-PAR2 chassis adapter is a passive device. The chassis adapter funnels power from one or two ControlLogix redundant power supplies to the single powerconnector on the ControlLogix chassis backplane.
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