TDK Lambda | Z+Low Voltage User Manual

5.5.2.2 Slave Unit Set Up When Slave mode is selected the power supply enters Current programming mode via external Voltage.VoltageandCurrent programming settingvalues are set to105%of range. Duringoperation the slave units operate as a controlled current source following the master output current. It is recommended that the power system is designed so that eachunit supplies up to 95%of its current rating. This helps reduce imbalance which may occur by cabling and connections voltage drop. 1. Press MENU button 2. Rotate Voltage encoder until ”  ” appears on Voltage display, then press Voltage encoder. 3. Rotate Current encoder until ”  ” appears. 4. Press Current encoder to select ”  ”. Display blinks once and returns to previous display. 5. For wiring instructions, refer to Fig.5-4: Parallel connection with local sensing or Fig.5-5: Parallel connection with remote sensing. 5.5.2.3 Setting Over Voltage Protection The master unit OVP should be programmed to the desired OVP level. In slave mode, the power supply is set to maximum as default. 5.5.2.4 Setting Foldback Protection Foldback protection, if desired, may only be usedwith themaster unit.When themaster unit shuts down it programs the slave units to zero output voltage. 5.5.2.5 Connection to Load In parallel operation, power supplies can be connected in local or remote sensing. Refer to Fig.5-4 and 5-5 for typical connections of parallel power supplies. The figures show connection of two units, however the same connection method applies for up to 6 units.

Fig.5-4: Parallel connection with local sensing

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