ABB AO845 模拟输出模块 它具有8个单极性模拟输出通道

AO845是一款模拟输出模块，它具有8个单极性模拟输出通道，适用于单个或冗余应用。该模块循环执行自诊断，包括对输出电路进行检测。如果给输出电路供电的过程电源电压过低，或者输出电流小于输出设定值且输出设定值>1mA（开路），则可能会报告External Channel Error（只报活动通道）。在冗余对中，模块将被ModuleBus主站命令为错误状态。如果出现输出晶体管错误、短路、校验和错误、内部电源错误、状态链接错误、看门狗或错误的OSP行为，则会报告模块错误。

AO845 is an analog output module with 8 unipolar analog output channels, suitable for single or redundant applications. This module performs self diagnosis in a loop, including detecting the output circuit. If the process power supply voltage to the output circuit is too low, or the output current is less than the output set value and the output set value is>1mA (open circuit), an External Channel Error may be reported (only active channels are reported). In a redundant pair, the module will be in an error state when commanded by the ModuleBus master station. If there are output transistor errors, short circuits, checksum errors, internal power supply errors, status link errors, watchdog or incorrect OSP behavior, a module error will be reported.
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