Master/Slave Operation - VOLTCRAFT LSP-1403 Notice D'emploi

• The output can be deactivated by pressing the button „OUTPUT ON"
(5).
In normal mode the device operates in constant voltage
mode. This means that the power supply emits a constant,
preset output voltage. This operation is indicated with a
green status display „CV" (10).
If the preset current is reached in normal operation, the
power supply switches to current limitation mode and
reduces the voltage value. This operation is indicated with a
red status display „CC" (11).

Master/slave operation

In master/slave operation, you can control up to 4 laboratory power units type LSP 1403 via the „master"
power unit. The voltage and the current are controlled here.
Proceed as follows for connection:
• Turn the device on and set all power units to the same „UVL" level (2) and the same output range (4).
• Set the voltage and the current control of the „slave" devices to maximum (all the way to the right).
• Switch on the power unit on the operating switch (1).
• Put the master/slave selection switch (24) on the rear into the corresponding position. The main
device (master) is set to the switch position „master". All other devices must be set in the position
„slave".
• Connect the power units with a jumper wire of the same length and
diameter on the clamp contact „OUT" (22) starting with the „master"
power unit. To do so, press the little slot inwards with a screwdriver
and insert the insulated conductor into the round opening.
• Guide the jumper wire on to the next power unit and connect it to the clamp „IN" (23).
• If there are additional power units in the circuit, continue the connection sequence (see the following
sketch).
• Check the control setting „Maximum" of the slave devices once again.
• Always turn the master power unit on first and select the desired output voltage. Once this is ready
for operation, you can activate all other devices.
• The slave devices indicated slave operation via the status LED „SLAVE" (6).
In master/slave operation, a slight current (approx. 5% of the nominal current)
must always be applied to the output to maintain the control circuit via the mas-
ter device. Ensure this with a small detachable load at the output (e.g. load resis-
tance 1 KOhm).
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