Parallel Operation (Par); Setting The Output Voltage - VOLTCRAFT VLP-USB Série Mode D'emploi

• With the laboratory power supply switched on, press and hold the "SHOW VALUE" button (34 or 27) during setting.
• The display (3 or 21) shows the current voltage level.
• Use an appropriate slotted screwdriver to set the desired max. voltage level on the "OVP ADJ." (35 or 26) adjuster.
If you do not want a protective cut-off, turn the adjuster all the way to the right.
• Release the "SHOW VALUE" button (34 or 27). Overvoltage protection is activated.
Resetting output A or C:
• As soon as the safety level set with the "VOLT" adjuster (4 or 15) has been exceeded, the respective output A or
C switches off immediately. The voltage display (3 or 21) returns to approx. 0 V and the "OVER VOLTAGE" status
display (9 or 20) lights up red.
• Disconnect the consumer from the laboratory power supply.
• Turn the "VOLT" adjuster a few turns anti-clockwise.
• Switch the laboratory power supply off at the power switch (1). Wait for approx. 3 seconds and switch the device
back on. This resets the protective cut-off.
Check the correct output voltage again and change the overvoltage protection, if necessary.

6.4.5. Parallel operation (PAR)

The two laboratory outputs (OUTPUT A and C) are internally connected in parallel. Due to the parallel connection, the
output current of the two outputs is added together. In this mode, the max. output current is 6 A. The output voltage
is 40 V/DC.
The internal wiring makes it possible to tap the max. output current of 6 A directly at output A. No external cable
bridges are required.
Disconnect consumers connected to output A (36 and 37) and output C (28 and 29) before changing oper-
ating mode.

Setting the output voltage

• Use the "MODE" rotary control (32) to select the "PAR" operating mode.
• Move the "AMPERE" current adjusters (8 or 19) to the centre position.
• Use the "VOLT" rotary control (4 or 15) to set the output voltage. In the lower voltage range, turn both "VOLT" rotary
controls (4 or 15) alternately to approx. 12 V. From 12 V, it is enough to set the voltage using the rotary control for
output A.
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