What is the HBB display Yaskawa inverter fault

Time: 5/25/2017 12:27:15 AM

What is the BB fault? It should be in the security signal input, if not. If there's no problem. Want to adopt, you need to check the H1-HC, need to check whether the external security input, that is, the frequency converter motherboard has a problem, and whether the H2-HC terminal is short