Operation principle and hardware description32Power connections and control interfacesThe diagram shows the power connections and control interfaces of the drivemodule.Slot 1 andSlot 2I/O extension modules (FIO-01, FIO-11, FIO-21)and/or encoder or resolver interface modules(FEN-01, FEN-11, FEN-21, FEN-31)1) For information on the defaultconnections, see page 104. For thespecifications, see page 131.* programmable2) Memory unit, see page 124.3) Brake resistor (optional)4) du/dt or sine filter (optional, seepage 161)Slot 3 Fieldbus adapter modules (FCAN-01, FDNA-01,FENA-11, FECA-01, FLON-01, FSCA-01,FPBA-01)XPOW External power inputXRO1…3 * Relay outputs (3 pcs)XD24 24 V DC outputXDI * Digital inputs (6 pcs)XDIO * Digital input/outputs (2 pcs)XAI * Analog inputsXAO * Analog outputsXD2D Drive-to-drive linkXSTO Safe torque offSlot 1Slot 2Slot 3FXXXFXXU2V2W2UDC-X7M3 ~XPOWXRO1…3XD24XDIXDIOXAIXAOXD2DXSTO24U1V1W1L1L2L3PEPEUDC+R-R+ t°31FXX