Connecting The Two Adjustable Outputs In Series - Velleman LABPS23023 Bedienungsanleitung

indicator is lit when the device is activated.
6 C.C.-mode indicator of the slave output or indicator for parallel connection: this indicator is lit when
the slave output is in the C.C.-mode or when the two adjustable outputs are connected in parallel.
7 C.V.-mode indicator of the slave output: this indicator is lit when the slave output is in the C.V.-
mode.
8 Negative binding post of the slave output: the negative pole of the output voltage is connected to the
negative terminal of the load being tested.
9 Earthing connection of the housing: the housing is grounded.
10 Positive binding post of the slave output: the positive pole of the output voltage is connected to the
positive terminal of the load being tested.
11/12 Control switches used to select independent operation, operation in parallel or in series.
13 Negative binding post of the master output: the negative pole of the output voltage is connected to
the negative terminal of the load being tested.
14 Earthing connection of the housing: the housing is grounded.
15 Positive binding post of the master output: the positive pole of the output voltage is connected to the
positive terminal of the load being tested.
16 Master output C.C.-indicator: this indicator is lit when the master output is in the C.C.-mode.
17 Master output C.V.-indicator: this indicator is lit when the master output is in the C.V.-mode.
18 Negative binding post of the fixed 5VDC-output: the negative pole of the output voltage is connected
to the negative terminal of the load being tested.
19 Positive binding post of the fixed 5VDC-output: the positive pole of the output voltage is connected
to the positive terminal of the load being tested.
20 Master output C.C.-adjustment: rotary switch used to adjust the current value of the master output
(adjustment of the current-limiting point).
21 Master output C.V.-adjustment: rotary switch used to adjust the voltage value of the master output.
5. Operation
5.1 Independent use of the two adjustable outputs
 Place switches [11] and [12] in the OFF-position.
 Proceed as follows when the adjustable outputs are used as C.V.-outputs: put the C.C.-control switches [4]
and [20] in the max. position and use the power switch [5] to activate the device. Install the required DC
output voltage for both master and slave using the rotary switches for C.V.-adjustment [3] and [21]. The
C.V.-indicators [7] and [17] will light.
 Proceed as follows when the adjustable outputs are used as C.C.-outputs: Use the power switch [5] to
activate the device. Put the C.V.-control switches [3] and [21] in the max. position and place the C.C.-
control switches [4] and [20] in the min. position. Connect the required load and install the required output
current by means of rotary switches [4] and [20]. The C.V.- mode indicators [7] and [17] will extinguish
and the C.C.-mode indicators [6] and [16] will light.
 The C.C.-control switches [4] and [20] are generally placed in the max. position when the adjustable
outputs are used as C.V.-outputs. With this particular device, however, the current-limiting point can be set
by the user. Use the following procedure: Switch on the device and place the C.C.-control switches [4] and
[20] in the min. position. Short the positive and negative output terminals. Consequently, the user should
adjust the position of the C.C.-control switches [4] and [20] until the output current matches the required
current-limiting point.
5.2

Connecting the two adjustable outputs in series

 Place switch [11] in the ON-position and leave switch [12] in the OFF-position. When the user adjusts the
output voltage of the master [21], the slave output will automatically follow suit. The max. output voltage
is 60V [voltage between the terminals of [8] and [15]].
 Examine whether the negative terminals of both the master and slave output are connected to the "GND"-
terminal [ground]. If so, the user should disconnect them in order to avoid a short-circuit when the two
outputs are connected in series.
 When the two outputs are connected in series, the output voltage is controlled by the master output. The
current adjustments of the two outputs, however, are still independent of each other. This is why the user
should check the position of the C.C.-control switch [4]. The voltage of the slave output will not be identical
to the voltage of the master if, for example, the C.C.-control switch [4] is in the min. position or if the
current of the slave output exceeds the current-limiting point. Consequently, the C.C.-control switch [4]
should be placed in the max. position when the two adjustable outputs are connected in series.
V. 03 – 07/01/2016
LABPS23023
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