3vacon • 80 Descriptions of VACON® option boardsLocal contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/Figure 30. Jumper selections for OPTD6, up to version E.Figure 31. X3 jumper selections for OPTD6, version F and later.NOTE! Position C can be used with 3- or 4-wire can cable to interconnect isolated CAN groundlevels in the network. It is recommended to connect the cable shield to the grounding clamp of thedrive.See more details of the alternatives on page 76.Jumper block X3:CAN groundingConnected to shield Not connected to shieldJumper block X4:CAN terminationTerminated Not terminated= Factory default7295.emfJumper block X3:CAN groundingA B CA: Connected to groundB: Connected to ground via LC filterC: Connected to CAN isolated groundNot assembled: No connection 7296.emf