Under normal conditions, the current control knob can be turned completely clockwise (for
max. current) or rotated back to a required maximum current value in order to protect the
connected unit.
Connection in series
Push in the left push button. Make sure that the right push button is NOT pushed in.
Connect a load between the black (-) terminal of the left unit and the red (+) terminal of the
right unit. The output voltage is now the sum of the left and right voltages together i.e. max.
60 Volts. In a series connection the two green terminals are not connected.
In this configuration, the voltage is set via the knob of the master power supply. The current
adjustment remain separate for both units (short circuit protection). This can be set at best at
the maximum level (turn the adjustment knob completely clockwise). As soon as the current
limit of the slave is activated, it does not follow any more the set master voltage.
Despite the fact that in a series connection, the units are linked together via the push buttons,
it is recommended that in case of a series connection over a longer period of time, the red (+)
terminal of the slave unit be connected to the black (-) terminal of the master unit via a short
wire of sufficient thickness. This increases considerably the life time of the internal circuits
and improves the stability of the output current and voltage.
Connection in parallel
Both push buttons must be pushed in. The current limit LED on the slave unit lights up.
The load can be connected either to the black (-) and red(+) terminal of the master unit as to
the slave unit. The output voltage is now equal to the indication of both displays (max. 30V)
but the current of both power supplies together i.e. max. 6Amps, are now available.
In a parallel connection, the voltage and the current limit of both units are set via the
adjustment knobs of the master unit. The controls on the slave unit do not work.
Despite the fact that in a parallel connection, the units are linked together via the push
buttons, it is recommended that in case of a parallel connection over a longer period of time,
the red (+) and the black (-) terminals of the master and the slave unit are linked together via a
short wire of sufficient thickness. This increases considerably the life time of the internal
circuits and avoids an unbalance between the two units.
Safety recommendations:
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Check the case and the leads for damage.
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For indoor use only
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Do not use the unit in humid areas
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Do not spill liquids inside the housing.
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Do not place the unit at a warm place (max. 30°C)
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Do not obstruct the ventilation holes and heat sink. Leave enough space around the unit to
ensure sufficient ventilation.
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The heat sink might get hot during operation. Do not touch during operation !
