Descriptions of VACON® option boards vacon • 55Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/3Jumper selectionsOn the OPTB1 board, there are two jumper blocks. The jumper block X2 is used to define thebidirectional terminal as either input or output. The other jumper block, X4, is used to connect thecommon terminals to GND. The factory default and other available jumper selections are presentedbelow.Figure 23. Jumper positions for OPTB110 +24V Control voltage output; Voltage for switches etc.;max. current 150mA; Short-circuit protected.Table 24. OPTB1 I/O terminalsTerminal Parameter referenceKeypad/NCDrive Technical informationDIO1DIO2DIO3DIO4DIO5DIO6DIO1 to DIO6mode OUTDIO1DIO2DIO3DIO4DIO5DIO6DIO1 to DIO6mode IN= Factory defaultCMA and CMBconnected to GNDCMACMBCMACMBCMA and CMBfloatingJumper block X 2 :DIO mode Jumper block X 4 :CM A/ CM B connectionto GN D7274.emf