In this Blog we discuss how to Modify F3330 Controller for Secondary Gate/ Low Voltage Firing

Cut the track on the underside…X marks the spot on the PCB (Just below QC16,QC17,QC18)

Connect 415VAC auxiliary supply as follows

QC16 -> L1

QC17 -> L2

QC18 -> L3

For the 12VAC Side connect to the power supply terminals where there would normally be 415VAC

L1 -> 12VAC(L1)

L2 -> 12VAC(L2)

L3 -> 12VAC(L3)

For further clarification please contact us.