How can I make my external trip to the VFD normally closed?
By default the external trip or BX function on the digital inputs are Normally Open (N.O.). Any of the digital input can be easily inverted to be a Normally Closed (N.C.) type at In87.
Moving the "DIP Switch" to the up position makes the corresponding digital input Normally Closed. The switches are displayed slightly different depending on the keypad type.
Be aware that these inputs are in order from right to left. So P1 is on the right, then P2, P3, etc.