This 40 Tons overhead crane has a standard general purpose VFD with break chopper and also controls the mechanical break. The problem is it does not use DC breaking to hold the weight before applying or releasing the mechanical break. This results in very high wear of break leathers. A few times weight fell and drive or break could not hold. Fortunately no one was hurt.
I need suggestions for a suitable VFD and guidelines regarding wiring and commissioning of this VFD.
I need suggestions for a suitable VFD and guidelines regarding wiring and commissioning of this VFD.