General Electric developed the 531X207LCSAEH1 LAN (local area network) current source board for the 531X series of replacement boards. A range of GE drives and exciters are capable of accepting and using this card. LAN systems in the drive receive power supplies rated at either 5 VDC or 15 VDC from this board. A voltage limited 0.3A current source is also provided by the card. All supplies to the board are drawn from a 115 VDC fuse protected input source.