Hello I am repairing a DELTA VSD (varible speed drive )
model ASD-A2-1521-M
that had a dead IGBT module FP50R06W2E3
And a melted blob where the soft start resister was
I think about (15mm long 6mm wide.wire wound) 3 or 4 watt and 1/2 ohm
I no this is soft start because there is relay contacts that short out this resister usually seconds after power up
looking at the data sheet for FP50R06W2E3 this resister is between pins P and P1
this resister charges 1600uf cap
from P output from bridge
110v 3 phase input estimate 275vdc to cap
My question is to resister value ?
