Lambda ZUP6-33 User Manual

Lambda ZUP6-33 User Manual Manual pdf 21 page image

Fig. 3-5:3.7.6 Multiple load connections with distribution terminals3.7.7 Grounding outputs3.8 EXTERNAL CONTROL CONNECTOR3.8.1 GeneralIf remotely located output distribution terminals are used, the power supply output terminals should beconnected to the distribution terminals by a pair of twisted or shielded wires. Each load should beseparately connected to the remote distribution terminals. If Remote Sensing is required, the sensingwires should be connected to the distribution terminals or at the most critical load.Either the positive or negative output terminals can be grounded. To avoid noise problems caused bycommon-mode current flowing from the load to ground, it is recommended to ground the outputterminal as close as possible to the power supply output.Always use two wires to connect the load to the power supply regardless of how the system isgrounded.The external control connector, used for analog programming of the power supply, is located on therear panel of the unit,(Fig. 4-2, item 4). The pin assignment is shown in Fig. 3-5 below.The External Control Connector signals are connected to thenegative output terminal. If the negative output terminal isfloated with respect to chassis ground , those signals will alsofloat at the same potential. Use appropriate safety measuresto prevent a shock hazard.Fig. 3-4: Multiple load connections with distribution terminalDISTRIBUTIONTERMINALLOAD #1LOAD #2LOAD #3POWERSUPPLY+++___+S- V- V+V+V- STo Dristribution TerminalsWARNINGThe maximum potential (including output voltage) that either output terminalis from ground, must not exceed the specified voltage on the front panel.WARNING114 1322- LS- S+LS+SOn/OffCOMOutput GoodPVRFVVCVPVRFIVCCPRCVPEXTERNAL CONTROLCONNECTOR(ZUP rear panel view)RCCP1External Control Connector pinassignment (ZUP rear panel view)