8.6.3 Control TerminalsControl Terminals, AutomationDrive FC 301Drawing reference numbers:1. 8-pole plug, digital I/O.2. 3-pole plug, RS-485 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, RS-485 bus.3. 6-pole, analog I/O.4. USB Connection.Figure 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 for the analog input terminals 53and 54, 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 force the switch over. It is recommended to remove the LCPfixture (cradle) when operating the switches. The switches must not be operated while the adjustable frequency drive is powered.8 Electrical Installation FC 300 Design Guide8-36 MG.33.BC.22 - VLT® is a registered Danfoss trademark8