We have started using MCR1101-50-5 in AC drive (3-Ph Inverter section) for current measurement and over current protection purpose.
In our present design we do not use Pin-9 (FAULTB) & Pin-16 (VOC).

Que-1) Can we leave these two Pin-9,16 NC (OPEN) ?
Que-2) If we can not, than suggest configuration for Pin-9,16 in our case.
Que-3) In case we do not use these two Pin-9,16. Is time response of Pin-12 (Vout) with actual current changed ?