Hello!
I have a problem on a Deckel MAHO FP4 machine....
When machine starts up (powers up a BOSCH driver) suddenly main fuses jumps down and machine gets a power cutoff.
I'm sure that regulator is problem because i wired fuses before regulator (which doesn't exist there normally) and when power cutoff (short circuit) comes up two of three fuses get activated.
Now, it would be easy problem if regulators were problem indeed...
I realized that short circuit comes up only if spindle drive is connected via bus bars...otherwise not even if all of the other axes with 4th axis also remains connected. So i connected other spindle drive (with other power supply also) from working machine and the same problem comes up. I thought that PLC sends wrong voltage to drivers input, but that's not the case as i disconnected all cables that are connected to spindle drive (except power supply) and problem remains.
Just one thing that i can think off which couls cause this problem is that power switches got bad contacts and can't deliver high current to the driver.
Anyone has other idea?