8.6.3 Control TerminalsControl Terminals, AutomationDrive FC 301Drawing reference numbers:1. 8 pole plug digital I/O.2. 3 pole plug RS485 Bus.3. 6 pole analog I/O.4. USB Connection.Control Terminals, AutomationDrive FC 302Drawing reference numbers:1. 10 pole plug digital I/O.2. 3 pole plug RS485 Bus.3. 6 pole analog I/O.4. USB Connection.Illustration 8.36: Control terminals (all frame sizes)8.6.4 Switches S201, S202, and S801Switches S201 (A53) and S202 (A54) are used to select a current (0-20 mA) or a voltage (-10 to 10 V) configuration of the analog input terminals 53 and54 respectively.Switch S801 (BUS TER.) can be used to enable termination on the RS-485 port (terminals 68 and 69).See drawingDiagram showing all electrical terminals in sectionElectrical Installation.Default setting:S201 (A53) = OFF (voltage input)S202 (A54) = OFF (voltage input)S801 (Bus termination) = OFFWhen changing the function of S201, S202 or S801 be careful not to use force for the switch over. It is recommended to remove theLCP fixture (cradle) when operating the switches. The switches must not be operated with power on the frequency converter.8 Electrical Installation FC 300 Design Guide180 MG.33.BC.02 - VLT® is a registered Danfoss trademark8