Velleman LABPS3005D Manual Del Usuario página 5

Using the Power Supply in Constant Voltage Mode
I f you want to us e the power s upply in c onstant voltage mode, you s et up the des ired output voltage
between 0 V and 3 0V. Y ou als o s et up the des i red c urrent limit.
I f the output c urrent exc eeds the limit, the power s upply automatically goes into c onstant c urrent mode.
Using the Power Supply in Constant Current Mode
I f you want to us e the power s upply in c onstant c urrent mode: you s et up the des ired output c urrent
between 0 A and 5 A . Y ou also s et up the des ired voltage limit.
Set ting Voltage and Current
Y ou c an s ave 4 different voltage/current s ettings us ing the memory keys M 1~M4.
1. P res s the memory key [5] of the memory for whic h you want to define the s ettings. T he
c orres ponding indicator M 1~M 4 [13] lights and the exis ting s ettings for voltage and c urrent are
dis played.
2. P res s the Voltage/Current key [16] to s et the voltage. T he voltage readout flashes.
For us e in c ons tant voltage mode: this is the desired c onstant voltage.
o
For us e in c ons tant c urrent mode: this is the des ired voltage limit.
o
I f you enable overvoltage protection, the output s witc hes off automatic ally if the voltage
o
exc eeds this value.
3. T urn the adjus tment knob [14] until you reac h approximately the desired voltage. P ress < or >
[15] to s elec t a digit in the voltage readout [7] and turn the adjus tment knob to fine - tune.
4. P res s the Voltage/Current key [16] again to s et the c urrent. T he c urrent readout flashes.
For us e in c ons tant voltage mode: this is the desired c urrent limit.
o
For us e in c ons tant c urrent mode: this is the des ired c onstant c urrent.
o
I f you enable overc urrent protection, the output s witches off automatically if the c urrent
o
exc eeds this value.
5. T urn the adjus tment knob [14] until you reac h approximately the desired c urrent. P ress < or >
[15] to s elec t a digit in the c urrent readout [6] and turn the adjus tment knob to fine - tune.
6. P res s the memory key again (or wait until the dis play s tops flashing).
T he s ettings are s aved in the s elected memory.
Recalling Set tings
T o rec all one of the s aved s ettings, pres s the c orresponding memory key M 1~M4 [5]. T he c orres ponding
indic ator M 1~M4 [13] lights and the c orres ponding voltage/current s ettings appear on the dis play.
Note: the output is s witc hed off automatic ally when you pres s a memory key to rec all a s etup.
Using Memory 5
T o us e memory 5 , proc eed as follows :
1. P res s memory key 4 and turn the adjus tment knob until indic ator M 5 lights.
2. Set the voltage and c urrent as des ired. Wait until the dis play s tops flas hing. T he s ettings are
automatic ally s tored in memory 5 .
3. T o rec all the s ettings, press memory key 4 and turn the adjus tment knob again until indictor M 5
lights .
Connecting a Load
1. C onnect the load's positive terminal to the red + terminal [18] of the power s upply.
2. C onnect the load's negative terminal to the blac k – terminal [18] of the power s upply.
3. Y ou c an c onnect the + or – terminal to the green earth terminal [17] of the power s upply to pin the
voltage to 0 V (earth potential) at that terminal.
I f you leave the earth terminal unc onnected, the output floats with res pect to the ground.
A pplying Voltage to the Load
1. P res s the Of f/On key [1] to apply the voltage to the load.
T he OUT [12] and C.V. indic ators [11] light. T he power s upply works in c ons tant voltage (CV)
mode; the dis play now s hows the ac tual output voltage and c urrent.
I f the c urrent exc eeds the s et c urrent limit, the power s upply automatically goes into c onstant
c urrent (C C) mode. T he C.V. indic ator goes out and the C.C. indic ator [10] lights .
2. P res s the Of f/On key [1] to s witc h the output off.
V . 04 – 03 /02 /2015
LA BPS3005D
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