整流回馈单元工作时报F033故障，目前还无法解决，整流和逆变之间连接有OCP过流保护单元，请问OCP的K,M控制点是什么信号，怎么控制原理是怎么样的，还没有弄明白，请求帮助！
最佳答案
1、你的整流回馈单元的熔断器是否已经损坏了。
2、关于那个K、M端子的解释说明在OCP的手册中有说明——
“- Automatically, i.e. initiated by the OCP control itself if the regeneration current across the IGBT on the OCP exceeds a particular value, i.e. the self-tripping threshold of the OCP.
When the IGBT is turned off, the level between terminals K and M on control terminal strip XKIPP1 switches to "low", so as to allow the tripping command to be "connected through" to parallel power sections if appropriate.
– Externally tripped if the level between terminals K and M switches to "low" on control terminal strip XKIPP1.
Source for external tripping in this case can be either the R/RF unit or the OCP in a parallel circuit if the power sections are connected in parallel.
Note: The R/RF unit is capable of detecting "inverter commutation failure" even before the regeneration
current has reached the self-tripping threshold of the OCP.
It signals this in response to low level between terminals XKIPP1.K and M on the CUR board.
3、你最好能够对照着手册上的电路示意图来看。如果你没有手册的话，我可以发给你。
提问者对于答案的评价：
谢谢
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