Eaton SmartWire-DT SWD Series Manual

8 SL4-SWD and SL7-SWD base modules for signal towers8.4 Installation208 SmartWire-DT module IP20 01/20 MN05006001Z-EN www.eaton.com8.4.2 Connecting the external supply voltageThe signal towers will be supplied with 24 VDC through the SWD line.If there is a large number of SmartWire-DT modules on a single SWD line, itmay be necessary to connect an additional supply voltage to the SmartWire-DT base module.Figure 73: How the supply voltage is routed when there is an external supply and the jumpers are setaccordinglyTo connect an external supply voltage, follow the steps below:▶ Connect the supply cables to the "24 V external" push-in terminals.Keep the permissible terminal capacities in mind, ￫ Section8.4.4, „Terminal capacities“, page 209.▶ Set the jumpers on the pins as shown in the following table.Figure 74: Connecting the external supply voltage with jumpersThe external supply voltage is applied.8.4.3 Connect SmartWire-DTExternal power supplyOn Off0 V24 V+15 VSel_OutGNDABGND0 V+24 VINTEXT24 V externalX1 (IN)X2 (OUT)EXTINTEXTINT SWD stations may be destroyed if they are refitted in the SWDline when the power supply is on.Switch off the power supply beforehand!