Table of Contents
Advertisement
3. Wait a few seconds until the VOLTAGE meter returns to display the Output voltage.
4. Adjust the Output voltage toward its minimum value and check that the Output voltage cannot be decreased
below the UVL setting.
5. Adjust the UVL limit to the minimum by repeating Step 1 and rotating the VOLTAGE encoder CCW.
3.8.7
Foldback Check
Refer to Section 5.5 for explanation of the FOLD function prior to performing the procedure below.
1. Ensure that the Output Voltage is set to approxiamtely 10% of the unit Output voltage rating.
2. Adjust the CURRENT encoder to set the current limit to approximately 10% of the unit Output current rating.
3. Momentarily press the FOLD button. Ensure that the FOLD LED illuminates. The Output voltage remains
unchanged.
4. Momentarily place a short-circuit across the the Output terminals (approximately 0.5 seconds). Ensure that
the Output Voltage falls to zero, the VOLTAGE meter displays "Fb" and the ALARM LED blinks.
5. Press the FOLD button again to cancel the FOLDback protection. The Output voltage should still remain at
zero.
6. Press the OUT button. Ensure that the Output voltage returns to its last setting.
7. Turn the output off by pressing the OUT button. Ensure that the VOLTAGE meter displays "OFF".
3.8.8
Address Setting
1. Press and hold the REM/LOC button for approximately 3 seconds. The VOLTAGE meter will display the
communication port address.
2. Using the VOLTAGE adjust encoder; check that the unit address can be set within the range of 0 to 30.
3.8.9
Baud Rate Setting (RS-232 and RS-485 only)
1. Press and hold the REM/LOC button for approximately 3 seconds. The CURRENT display will show the
communication port Baud rate.
2. Using the CURRENT adjust encoder, check that the Baud rate can be set to 1200, 2400, 4800, 9600 and
19200.
3.9 CONNECTING THE LOAD
3.9.1
Load Wiring
The following considerations should be made to select wiring for connecting the load to the power supply:
Current carrying capacity of the wire (refer to Section 3.9.2)
Insulation rating of the wire should be at least equivalent to the maximum Output voltage of the power supply.
Maximum wire length and voltage drop (refer to Section 3.9.2)
Noise and impedance effects of the load wiring (refer to Section 3.9.4).
3.9.2
Current Carrying Capacity
Two factors must be considered when selecting the wire size:
1. Wires should be at least heavy enough not to overheat while carrying the power supply load current at the
rated load, or the current that would flow in the event the load wires were shorted, whichever is greater.
Shorting the output may expose the user to hazardous voltages.
Observe proper safety procedures.
Turn Off the AC input power before making or changing any rear panel
connection. Ensure that all connections are securely tightened before
applying power. There is a potential shock hazard when using a power
supply with a rated Output voltage greater than 40V.
83-517-000 Rev. A
WARNING
WARNING
27
Advertisement
Table of Contents
