TDK Lambda | Z+Low Voltage User Manual

6.5 Remote Resistor Programming of Output Voltage and Output Current For resistive programming, internal current sources, for output voltage and/or output current control, supply 1mA current through external programming resistors connected between J1-6 and J1-12 and between J1-5 and J1-11, J1-7 & J1-1. The voltage across the programming resistors is used as a programming voltage for the power supply. Resistance of 0~5Kohm or 0~10Kohm can be selected to program the output voltage and current limit from zero to full scale. A variable resistor can control the output over the entire range, or a combination of variable resistors and series/parallel resistors can control the output over restricted portion of the range. 3. PressMENUbutton. MENU (GREEN) LED illuminates. ” Set ”message appears onVoltagedisplay. 4. Press Voltage encoder. ” uOLt ” message appears on Voltage Display and ” CvRR ” appears on the Current display. 5. Press on the Voltage encoder to select programming the Output Voltage, or Press Current encoder to select programming of the Output Current. 6. The selected function appears on the Voltage display. Parameter ” F.PaN ” or ” E.uOL ” or ” E.res ” appears on the Current display. 7. Rotate and press the Current encoder on to select ” E.res ”. 8. ” uOLt ” message appears on Voltage Display and ” CvRR ” appears on the Current display. 9. Rotate Current encoder until ” raNG ” appears on the display. Press on the relevant Encoder. 10. ” rANG ” appears on Voltage display and ” 5 ” (5K) or ” 10 ” (10K) appears on Current display. 11. Rotate and press the Current encoder to select the desired programming Resistance range. 12. Press MENU button twice to return display to the previous state. MENU LED turns OFF. Remote Programming settings as follows: 1. For Resistor Analog Programming wiring refer to Fig.6-2. 2. Short pins J1-1 to J1-7.

Output Voltage Programming

Programming Resistor

Optional sets Lower limit

Optional sets Upper limit

Optional sets Upper limit

Optional sets Lower limit

Programming Resistor

Output Current* Programming

Fig.6-2: J1-Remote Resistor Programming Connection

*Max. output current is limited by front panel current setting.

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