3. Press the Power button [19] to switch the power supply off.
Using the Power Supply in Constant Voltage Mode
If you want to use the power supply in constant voltage mode, you set up the desired output voltage
between 0V and 30V. You also set up the desired current limit.
If the output current exceeds the limit, the power supply automatically goes into constant current mode.
Using the Power Supply in Constant Current Mode
If you want to use the power supply in constant current mode: you set up the desired output current
between 0A and 5A. You also set up the desired voltage limit.
Setting Voltage and Current
You can save 4 different voltage/current settings using the memory keys M1~M4.
1. Press the memory key [5] of the memory for which you want to define the settings. The
corresponding indicator M1~M4 [13] lights and the existing settings for voltage and current are
displayed.
2. Press the Voltage/Current key [16] to set the voltage. The voltage readout flashes.
o For use in constant voltage mode: this is the desired constant voltage.
o For use in constant current mode: this is the desired voltage limit.
o If you enable overvoltage protection, the output switches off automatically if the voltage
exceeds this value.
3. Turn the adjustment knob [14] until you reach approximately the desired voltage. Press < or >
[15] to select a digit in the voltage readout [7] and turn the adjustment knob to fine-tune.
4. Press the Voltage/Current key [16] again to set the current. The current readout flashes.
o For use in constant voltage mode: this is the desired current limit.
o For use in constant current mode: this is the desired constant current.
o If you enable overcurrent protection, the output switches off automatically if the current
exceeds this value.
5. Turn the adjustment knob [14] until you reach approximately the desired current. Press < or >
[15] to select a digit in the current readout [6] and turn the adjustment knob to fine-tune.
6. Press the memory key again (or wait until the display stops flashing).
The settings are saved in the selected memory.
Recalling Settings
To recall one of the saved settings, press the corresponding memory key M1~M4 [5]. The corresponding
indicator M1~M4 [13] lights and the corresponding voltage/current settings appear on the display.
Note: the output is switched off automatically when you press a memory key to recall a setup.
Using Memory 5
To use memory 5, proceed as follows:
1. Press memory key 4 and turn the adjustment knob until indicator M5 lights.
2. Set the voltage and current as desired. Wait until the display stops flashing. The settings are
automatically stored in memory 5.
3. To recall the settings, press memory key 4 and turn the adjustment knob again until indictor M5
lights.
Connecting a Load
1. Connect the load’s positive terminal to the red + terminal [18] of the power supply.
2. Connect the load’s negative terminal to the black – terminal [18] of the power supply.
3. You can connect the + or – terminal to the green earth terminal [17] of the power supply to pin the
voltage to 0V (earth potential) at that terminal.
If you leave the earth terminal unconnected, the output floats with respect to the ground.
Applying Voltage to the Load
1. Press the Off/On key [1] to apply the voltage to the load.
The OUT[12] and C.V. indicators [11] light. The power supply works in constant voltage (CV)
mode; the display now shows the actual output voltage and current.
If the current exceeds the set current limit, the power supply automatically goes into constant
current (CC) mode. The C.V. indicator goes out and the C.C. indicator [10] lights.
2. Press the Off/On key [1] to switch the output off.
To prevent unwanted operation of the panel keys, you can lock the front panel.
1. Press and hold the Lock/Unlock key [4] for about 2 seconds. You hear a short tone. The keys are
now locked.
2. To unlock the panel, press and hold the button again. You hear a short tone.
Key Tones
Each time you press a key on the front panel, you hear a tone.
1. To switch off the tone, press and hold the OCP/Beep key [3] for about 2 seconds.
2. To switch the tone on again, press and hold the OCP/Beep key [3] for about 2 seconds.
8. Protection
Using Overvoltage Protection
1. To protect against overvoltage, set up the maximum voltage and then press the OVP button. The OVP indicator lights.
2. Press Off/On to apply the output to the load.
If the output voltage becomes higher than the set value, the power supply cuts off the output and
the OVP indicator flashes.
3. Disconnect the load.
4. To recover, press the OVP key.
Using Overcurrent Protection
1. To protect against overcurrent, set up the maximum current and then press the OCP button. The
OCP indicator lights.
2. Press Off/On to apply the output to the load.
If the output current becomes higher than the set value, the power supply cuts off the output and
the OCP indicator flashes.
3. Disconnect the load.
4. To recover, press the OCP key.
9. Troubleshooting
• Nothing happens when you press the panel keys.
The keys are locked. Press and hold the Lock/Unlock key [4] about 2 seconds. You hear a tone
when they keys are unlocked.
• Power is on and output is switched on, but there is no output.
The load is not properly connected, or the current setup is 0.
• The output voltage rises slowly when the output is switched on.
The current setup is too small.
10. Remote Control via PC
To operate the power supply via the included pc software, proceed as follows:
1. Install the software on your pc and launch the software.
2. Connect the power supply to the pc via the USB [21] or RS232 [20] port and switch it on.
The power supply connects automatically to the software. When connection is successful, you hear a
tone. On the pc, the communication status [K] is indicated.
Note: the keys on the front panel are locked when the power supply is connected to a pc. You can only
operate the power supply via the pc. The LED display and indicators work normally.
A Current adjustment G Current graph: shows the current over time
B Current display (ampere) H Log
C Voltage adjustment I Output off
D Voltage display (volt) J Output on
E Overcurrent protection
F Voltage graph: shows the voltage over time
Communication status
Setting Voltage and Current
To set the voltage and current [A,C] you can:
• select a value from the list
• drag the sliders. Tip: you can click on the slider and use the scroll wheel of your mouse.
The set value appears in the box to the right of the slider.
Applying Voltage to the Load
Press the ON key [J] to apply voltage to the load.
Press the OFF key [I] to switch the output off.
Using Overcurrent Protection
To protect against overcurrent, set up the maximum current and then select Output switch off in the
Current protection setup box [E].
To switch overcurrent protection off, select Overcurrent protection off.
PS3005D
Running a Predefined Voltage/Current Programme
The software allows you to define a series of voltage/current settings for the output, and let them run
automatically. To set up the programme:
Exiting from PC Remote Control Mode
1. Close the remote control software.
2. Disconnect the USB/RS232 cable from the back of the power supply.
You hear a tone from the power supply to indicate that remote control mode is no longer active. The
keys on the front panel are unlocked automatically (this may take a few seconds).
Troubleshooting
If you are experiencing problems, check if the pc’s COM port is set up correctly:
1. Click the ProgramForm tab.
2. In the table, enter the desired voltages, currents, and time (in seconds).
3. In the loop box, select how many times the programme has to run:
o Select infinite to let the programme run infinitely until you stop it
manually.
o Select a number from the selection list.
o Or click in the loop box and type the required number.
4. Click the Run button to start the programme.
5. Click the Stop button to pause the programme. Click Run again and the
programme continues where it was stopped.
6. Click the MainScreen tab to see the evolution of voltage and current in the
graphs while the programme runs.
• bits per second: 9600
• parity bit: none
• data bits: 8
• stop bits: 1
• data flow control: none.
To check the functionality, run this query command via a terminal application such as MTTTY:
*ldn?
This should return the identification information (model name, serial number) of the power supply.
11. Cleaning and Maintenance
• Disconnect the device from the mains prior to maintenance activities.
• The power supply cables must not show any damage. Have a qualified technician maintain the
device.
• Wipe the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents.
• There are no user-serviceable parts, apart from the fuse. Contact your dealer for spare parts if
necessary.
• Store the device in a dry, well-ventilated, dust-free room.
Replacing the Fuse
Only replace the fuse by a fuse of the same type and rating.
1. Before replacing the fuse, unplug the mains lead.
2. Wedge the fuse holder out of its housing with a flat-head screwdriver.
3. Remove the damaged fuse from its holder and replace with the exact same type of fuse.
4. Insert the fuse holder back in its place and reconnect power.
input voltage 220VAC/50Hz
fuse 3A/250V
output voltage 0-30VDC
output current 0-5A
source effect C.V. ≤ 0.01% + 3mV
load effect C.V. ≤ 0.01% + 2mV
setup resolution 10mV
setup accuracy (25°C ± 5°C) ≤ 0.5% + 20mV
ripple (20Hz-20MHz) ≤ 2mVrms
temperature coefficient ≤ 100ppm + 10mV
read back accuracy 10mV
read back temp. coefficient ≤ 100ppm + 10mV
reaction time (10% rated load) voltage rise: ≤ 100ms
dimensions 110 (W) x 156 (H) x 260 (D) mm
weight 4.3kg
autonomy 8 hours of continuous use at maximum load
Use this device with original accessories only. Velleman nv cannot be held responsible in the
event of damage or injury resulting from (incorrect) use of this device.
For more info concerning this product and the latest version of this manual, please visit our
website www.velleman.eu.
The information in this manual is subject to change without prior notice.
of this manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise
without the prior written consent of the copyright holder.
2. Druk op Power [19] om de voeding in te schakelen. De voeding roept automatisch de instellingen van geheugen 1 op. (Zie Setting Voltage and
Current voor meer informatie.) Het display toont de bestaande instellingen, de M1-indicator [13]
licht op.
Op dit ogenblik is er geen uitgangsspanning of –stroom op de uitgangsconnectoren.
3. Druk op Power [19] om de voeding uit te schakelen.
De voeding gebruiken in constante spanningsmodus
Indien u de voeding wenst te gebruiken in constante spanningsmodus, stel de gewenste
uitgangsspanning in tussen 0V en 30V. U kunt eveneens het gewenste stroombegrenzingspunt instellen.
Indien de uitgangsspanning de ingestelde waarde overschrijdt, gaat het toestel automatisch over in
constante stroommodus.
De voeding gebruiken in constante stroommodus
Indien u de voeding wenst te gebruiken in constante stroommodus: stel de gewenste uitgangsstroom in
tussen 0A en 5A. U kunt eveneens de gewenste spanningsbegrenzing instellen.
Spanning en stroom instellen
U kunt tot 4 verschillende spanning-/stroominstellingen opslaan met de geheugentoetsen M1~M4.
1. Druk op de geheugentoets [5] van het geheugen waarvan u de instellingen wenst te definiëren. De
overeenkomstige M1~M4-indicator [13] licht op en de bestaande spanning- en stroominstellingen
worden weergegeven.
2. Druk op de selectieknop Voltage/Current[16] om de spanning in te stellen. De
spanningsuitlezing knippert.
o Voor gebruik in constante spanningsmodus: dit is de gewenste constante spanning.
o Voor gebruik in constant stroommodus: dit is het gewenste spanningsbegrenzingspunt.
o Bij het deactiveren van de overspanningsbeveiliging, wordt de uitgang automatisch
uitgeschakeld indien de spanning de ingestelde waarde overschrijdt.
3. Draai aan de instelknop [14] totdat u ongeveer de gewenste spanningswaarde hebt bereikt. Druk
op < of > [15] om een digit te selecteren in de spanningsuitlezing [7] en draai aan de instelknop
om te fijnregelen.
4. Druk nogmaals op de selectieknop Voltage/Current [16] om de stroom in te stellen. De
stroomuitlezing knippert.
o Voor gebruik in constante spanningsmodus: dit is het gewenste stroombegrenzingspunt.
o Voor gebruik in constants stroommodus: dit is de gewenste constante stroom.
o Bij het deactiveren van de overstroombeveiliging, wordt de uitgang automatisch uitgeschakeld
indien de stroom de ingestelde waarde overschrijdt.
5. Draai aan de instelknop [14] totdat u ongeveer de gewenste stroomwaarde hebt bereikt. Druk op <
of > [15] om een digit te selecteren in de stroomuitlezing [6]
en draai aan de instelknop om te
fijnregelen.
6. Druk nogmaals op de geheugentoets (of wacht totdat de display niet meer knippert).
De instellingen zijn opgeslagen in het geselecteerde geheugen.
Oproepinstellingen
Om één van de opgeslagen instellingen op te roepen, druk op de overeenkomstige M1~M4geheugentoetsen [5]. De overeenkomstige M1~M4-indicator [13] licht op en de overeenkomstige
spanning- en stroominstellingen worden weergegeven op de display.
Opmerking: de uitgang wordt automatisch uitgeschakeld wanneer u een geheugentoets indrukt om een
instelling op te roepen.
Geheugen 5 gebruiken
Om geheugen 5 te gebruiken, gaat u als volgt te werk:
1. Druk op de geheugentoets 4 en draai aan de instelknop totdat de M5-indicator oplicht.
2. Stel de gewenste spanning en stroom in. Wacht totdat de display niet meer knippert. De instellingen
worden automatisch opgeslagen in geheugen 5.
3. Om de instellingen op te roepen, druk de op de geheugentoets 4 en draai nogmaals aan de
instelknop totdat de M5-indicator oplicht.