Overcurrent Protection; Cleaning And Maintenance - Velleman LABPS3005 Bedienungsanleitung

Use as Constant Current Source (CC)
1. Set the maximum voltage as described above.
2. Briefly press the CURRENT knob to set the maximum current. The left digit blinks and you can now
enter your setting. Each press on the CURRENT knob makes the digit move to the right. The set
value will be memorized 2 seconds after the last setting action.
3. The set current can only be delivered if voltage is present and that voltage is high enough. In this
case, the CC indicator will blink. The displayed voltage is the voltage on the load.
Connecting a Load
1. Connect the load's positive terminal to the red + terminal of the power supply.
2. Connect the load's negative terminal to the black – terminal of the power supply.
3. You can, by connecting + or – to the ground (GND), choose if + or – will stay at 0 V (earth
potential). Otherwise, the power output will be galvanically isolated or floating.
Locking the Panel keys
To prevent unwanted operation of the panel keys, you can lock the front panel.
1. Press and hold the VOLTAGE knob until the LOCK indicator lights up. The buttons are now locked.
2. To unlock the panel, press and hold the button until the LOCK indicator switches off.

Overcurrent Protection

The power output will be deactivated when the set current is transgressed.
1. Set the maximum current as described above.
2. Keep the CURRENT knob pressed until the OCP indicator lights.
3. Keep the CURRENT knob pressed to deactivate the OCP function.
4. When exceeding the maximum current, voltage and current will go to 00.00/0.000. Disconnect the
load and deactivate the OCP function before using the power supply again.
7. Troubleshooting

Nothing happens when you operating the panel buttons.
The buttons are locked. Press and hold the VOLTAGE knob for about 2 seconds.

Voltage is present (see VU meter) but there is no output current.
Faulty load.
The load is not properly connected.
The maximum current is set at 0.
8.

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.
V. 04 – 01/12/2015
LABPS3005
5 ©Velleman nv