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If the preset current is reached in normal operation, the power unit switches to current limitation
mode and reduces the voltage value. This operation is signalled with the red status display
“C.C.“ (1).
Set output voltage
The output voltage can be set at the “VOLTAGE” (3) control. The coarse and ne control is performed
in the same way as for setting the current limitation.
With the large control range, it is possible that the voltage setting takes approx.
1- 2 seconds to switch from a high to a low voltage value.
In normal mode the device operates in constant voltage mode. This means that the power
unit emits a constant, preset output voltage. This operation is indicated with a green status
LED “C.V.“ (1).
Connecting a load
When connecting a consumer, make sure that it is connected to the power unit when
switched off. The maximum current consumption of the device to be connected
must not exceed the capacity indicated in the technical specications.
For serial connection of the outputs with several power supplies, the resulting
voltages can be fatal on contact (> 75 V/DC). As of this voltage, you may only use
insulated accessories.
Avoid the use of non-insulated metallic cables and contacts. All these exposed
areas must be covered with suitable, ame-resistant insulation materials or by other
measures and be protected from direct contact and short circuits.
Ensure a sufcient cable diameter for the intended current.
The power unit has two outputs. These outputs always have the same output voltage. The difference,
however, is in the current carrying capacity.
At the front sockets (6), only a current of max. 5 A can be tapped. An automated
current limitation is integrated.
The screw sockets on the back are indicated for full nominal current. From an output
current of 20 A, the screw clamp function of the rear sockets is recommended to
avoid overheating of the plug sockets.
1. Remove any connected consumers from the output.
2. Switch on the power unit at the power switch (5). The operating display (1) lights up and the current
and voltage display appears on the display.
3. Set the parameters according to your specications as described in the chapter “Start-Up”.
4. Check once more that the correct output voltage is set.
5. Connect the plus pole (+) of the consumer with the red socket “+” and the minus pole (-) of the
consumer with the black socket “-” of the respective output (front = “AUX. OUTPUT” (6), rear =
“MAIN OUTPUT”(7)).
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