10.2 General Purpose Input Output Module MCB 101MCB 101 is used for extension of digital and analog inputs and outputs of AutomationDrive FC 301 and AutomationDrive FC 302.Contents: MCB 101 must be fitted into slot B in the VLT AutomationDrive.• MCB 101 option module• Extended fixture for LCP• Terminal cover10.2.1 Galvanic Isolation in the MCB101Digital/analog inputs are galvanically isolated from other inputs/outputs on the MCB101 and in the control card of the frequency converter. Digital/analogueoutputs in the MCB101 are galvanically isolated from other inputs/outputs on the MCB101, but not from these on the control card of the drive.If the digital inputs 7, 8 or 9 are to be switched by use of the internal 24 V power supply (terminal 9) the connection between terminal 1 and 5 which isillustrated in the drawing has to be established.Illustration 10.2: Principle DiagramFC 300 Design Guide 10 Options and AccessoriesMG.33.BC.02 - VLT® is a registered Danfoss trademark 20910