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三菱变频器通过保护功能检测到有异常时,保护功能进行工作,输出异常输出信号。但是,在三菱变频器异常时,检测电路或输出电路发生故障等情况,不能输出异常输出信号。作为厂家希望品质万无一失,但是为了不因由于某些原因发生的三菱变频器故障而导致设备受损等事故,采取使用三菱变频器的各种状态输出信号的互锁装置,同时估计三菱变频器发生故障时,不通过三菱变频器,可以考虑在三菱变频器外部设置故障自动保险系统。
一、利用三菱变频器各种状态输出信号的互锁方法。
配套使用三菱变频器的各种状态输出信号,按以下方法通过采取连锁装置,可以检测三菱变频器的异常。
二、在三菱变频器外部备份方法。
1、 启动信号和实动作的检查。
2、 指令速度的实动作速度的检查。
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