Velleman PS23023 - Manual (Page 5)

PS23023
25.01.2010 ©Velleman nv 5
(4) Slave C.C.-adjustment: rotary switch to adjust the output current of the slave (to determine
the current-limiting point)
(5) Power switch: push button used to activate/deactivate the device. Either the C.V.- or the
C.C.-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.
4. Operating Procedure
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.
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