74 • vacon CABLING AND CONNECTIONSTel. +358 (0)201 2121 • Fax +358 (0)201 212 20566.2.2.2 Jumper selections on the OPTA1 basic boardThe user is able to customise the functions of the frequency converter to better suit his needs by selectingcertain positions for the jumpers on the OPTA1 board. The positions of the jumpers determine the signaltype of analogue and digital inputs.On the A1 basic board, there are four jumper blocks X1, X2, X3 and X6 each containing eight pins and twojumpers. The selectable positions of the jumpers are shown in Figure 6-32.Figure 6-31. Jumper blocks on OPTA1
