2. Connect the unit to an AC source as described in section 3.7.
3. Connect aDVM with appropriate cables for the rated voltage to the output terminals.
4. Turn the front panelAC power switch to On.
1. Turn on the output by pressing OUT pushbutton so the OUT LED illuminates.
2. Observe the power supply VOLT display and rotate the Voltage encoder. Ensure that the
output voltage varies while the VOLT encoder is rotated. The minimum control range is from
zero to the maximum rated output for the power supply model.
Compare the DVM reading with the front panel VOLT display to verify the accuracy of the
VOLT display. Ensure that the front panel VOLT LED is on.
3. Turn off the front panelAC power switch.
1. Ensure that the front panelAC power switch is at Off position and the DVM connected to the
output terminals shows zero voltage.
2. Connect aDC shunt across the output terminals. Ensure that the shunt and the wires' current
ratings are higher than the power supply rating. Connect a DVM to the shunt.
3. Turn the front panelAC power switch to On position.
4. Turn on the output by pressing OUT pushbutton so the OUT LED illuminates.
5. Observe the power supply CURRENT display and rotate the CURRENT encoder. Ensure that
the output current varies while the CURRENT encoder is rotated.The minimum control range
is from zero to the maximum rated output for the power supply model.
Compare the DVM reading with the front panel CURRENT display to verify the accuracy of
the CURRENT display. Ensure that the front panel CURRENT LED is on.
6. Turn off the front panelAC power switch.
7. Remove the shunt from the power supply output terminals.
Refer to Section 5.3 for explanation of the OVP function prior to performing the procedure below.
1. Turn the front panelAC power switch to On position and turn on the output by pressing OUT
pushbutton.
2. Using the VOLT encoder, adjust the output voltage to approx. 10% of the unit voltage rating.
3. Momentarily press
the OVP/UVL button so that the CURRENT display shows“OUP”. The
VOLTAGE display will show the last setting of the OVP level.
4. Rotate the VOLT encoder CCW to adjust the OVP setting to 50% of the unit voltage rating.
5. Wait a few seconds until the VOLT display returns to show the output voltage.
6. Adjust the output voltage toward it’smaximum and check that the output voltage cannot be
increased more than the OVP setting.
7. Adjust OVP limit to the maximum by repeating step 3 and rotating the VOLT encoder CW.
Refer to Section 5.4 for explanation of the UVL function prior to performing the procedure below.
1. Press the OVP/UVL button TWICEso that the CURRENT display shows"UUL". The VOLTAGE
display will show the last setting of the UVL level.
2. Rotate the VOLT encoder to adjust the UVL level to approx. 10% of the unit voltage rating.
3. Wait a few seconds until the VOLT display returns to show the output voltage.
4. Adjust the output voltage toward it’sminimum and check that the output voltage cannot be
decreased below the UVL setting.
5. Adjust the UVL limit to the minimum by repeating step1 and rotating the VOLT encoder CCW.
3.8.3 Constant Voltage Check
3.8.4 Constant Current Check
3.8.5 OVPCheck
3.8.6 UVL Check
18
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 approx. 10% of the unit rating.
2. Adjust the CURRENT encoder to set the current limit to approx. 10% of the unit rating.
3. Momentarily press the FOLD button. Ensure that the FOLD LED illuminates. The output
voltage remains unchanged.
4. Short the output terminals momentarily (approx. 0.5 sec.). Ensure that the output voltage falls
to zero, the VOLT display shows “Fb” and the ALARM LED blinks.
5. Press the FOLD button again to cancel the protection. The output voltage remains zero.
6. Press OUT button. Ensure that the output voltage returns to it’s last setting.
7. Turn the output offby pressing OUT button. Ensure that the VOLT display shows“OFF”.
1. Press and hold the REM/LOC button for approx. 3sec. The VOLT display will show the
communication port address.
2. Using the VOLT adjust encoder, check that the address can be set within the range of0to 30.
1. Press and hold the REM/LOC button for approx. 3sec. 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.
3.8.8 Address Setting
3.8.9 Baud Rate Setting
3.9 CONNECTINGTHE LOAD
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 greater than 40V.
3.9.1 Load Wiring
3.9.2 Current Carrying Capacity
at least
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 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 3.9.2)
* Noise and impedance effectsof the load wiring (refer to 3.9.4).
Two factors must be considered when selecting the wire size:
1. Wires should be 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.
3.8.7 Foldback Check
WARNING
WARNING
WARNUNG
WARNUNG
Schalten Sie die Netzversorgung aus, bevor Sie
Verbindungen an der Rückseite des Gerätes vornehmen
oder ändern. Stellen Sie sicher, dass alle Verbindungen fest
und sicher sitzen, bevor Sie das Netz einschalten.
Bei Stromversorgungen mit einer Nennausgangsspannung
von mehr als 40V besteht grundsätzlich die Gefahr eines
elektrischen Schlags.
Das Kurzschlie en des Ausgangs kann den Anwender
einer gef hrlichen Spannung aussetzen. Beachten Sie
die entsprechenden Sicherheitsrichtlinien.
ß
ä
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