Surge Capacitor for Motors Driven by VVVF

It will almost certainly cause damage to the VFD if the surge capacitors are left installed. The charging current of the capacitors appears like a short circuit to the transistors, so the high dI/dt can cause them to misfire and destroy themselves. There is no need for them when you are not starting DOL. remove them or order motors without them.

If if you are going to use a bypass for the VFD, you will need the surge caps when starting DOL in bypass, so add a capacitor control contactor to switch them in only when necessary.