PS2 3023
DC-REGULATED POWER SU PPLY DC-GESTUURDE VOEDING ALIMENTATION À PILOTAGE CC
FUENT E DE ALIMENTACIÓN CC REGULABLE DC REGULIERTES NETZGER ÄT
USER MANUAL |
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GEBRUIKERSHAND LEIDING |
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NOTIC E D’EMPLOI |
10 |
MANUA L DEL USUA RIO |
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BEDIE NUNGSANLEITUNG |
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PS23023
25.01.2010 |
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©Velleman nv |
PS230 23
25.01.2010 |
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©Vellem an nv |
PS230 23
USER M ANUAL
1. Int roduction
To all residents of the European Union
Importa nt environmental information about this product
This symbol o n the device or the package in dicates that dis posal of the device after its lif ecycle could harm t e environment. Do not dispos e of the unit (or batteries) as u nsorted municipal waste; it sho uld be taken to a specialized co mpany for recy cling. This device should be returned to your distributor or to a local recycling service. Respect the loc al environment al rules.
If in do ubt, contact y our local waste disposal authorities.
Thank yo u for choosing Velleman®! The PS23023 is a highly accurat e, DC-regulated power supply with two adjustable outputs and one fixed output.
The two adjustable outputs can be use d for constant voltage (C.V.) or constant current (C.C.). These two high-per formance outputs are very sta ble. The output voltage can be adjusted arbitrarily between 0V and 30V when the device is in the "constan t voltage"-mode .
The two adjustable outputs can be con nected either in parallel or in s eries, while the master control s the voltage a nd current settings. The fixed output voltage is 5V. The fixed output is very stable, has a lo w ripple and is protected a gainst overload .
The PS23023 is a highperformance d evice with a co mpact and elega nt design. It is ideal for scientific research, industrial applications and use in laboratories.
2. Te chnical Spe cifications
Input Voltage |
: 220VAC/ 50Hz ± 2Hz |
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Two adju stable outputs |
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Output Voltage |
: 30VDC |
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Output Current |
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3A |
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Source Regulation |
: C.V. ≤ 1 x 10-4 + 0.5mV |
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C.C. ≤ 2 x 10-3 + 1mA |
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L oad Regulation |
: C.V. ≤ 1 x 10-4 + 2mV (output current ≤ 3A) |
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C.V. ≤ 1 x 10-4 + 5mV (output current > 3A) |
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C.C. ≤ 2 x 10-3 + 3mA (output current ≤ 3A) |
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C.C. ≤ 2 x 10-3 + 5mA (output current > 3A) |
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Ripple |
: C.V. ≤ 0.5mVrms (outp ut current ≤ 3A) |
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C.V. ≤ 1.0mVrms (outp ut current > 3A ) |
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C.C. < 3mArms |
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P rotection |
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current-limiting |
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In dication |
: Voltmete r & ampereme ter ; 3-digit vol t-LCD (LED) & a mp- |
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LCD (LE D) |
a.Volt-indication : LCD ( LED) ± 1% ± 2 digits
b.Amp-in dication : LCD (LED) ± 2% ± 2 digits
Fixed Output |
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Output Voltage |
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5V ± 3% |
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Output Current |
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3A |
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Source Regulation |
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≤ 1 x 10- 4 + 1mV |
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L oad Regulation |
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1 x 10-3 |
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Ripple |
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0.5mVrm s |
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P rotection |
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current-limiting & short-circuit protection |
Environm ental Factors |
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Operating Tempe rature |
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0 to +40 °C |
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Relative humidit y |
: < 90% |
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Dimensio ns |
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: 360 mm x 265mm x 165mm |
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Operating Time |
: 8hrs continuously |
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3. Description
Controls and Description of the Front P anel
(1)LCD: indicat es the current value and the output voltage of the master.
(2)LCD: indicat es the current value and the output voltage of the slave.
(3)Slave C.V.-a djustment: rotary switch to ad just the output voltage of the slave.
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(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
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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.
-Use appropriate test leads to short the negative terminal of the master output with the positive binding post of the slave output if the two adjustable outputs are connected in series. Failure to do this will cause the current to run through the shorted switch, as the negative terminal of the master output is shorted by switch (11). This will affect the reliability of the device.
3)Parallel use of the two adjustable outputs
-Put both switch (11) and (12) in the ON-position. The two adjustable outputs are now connected in parallel. Use control switch (21) to adjust the C.V. of the master output. The voltage of master and slave will remain identical to each other and the C.C.-indicator (6) of the slave output will light.
-The C.C.-control switch (4) of the slave output does not work when the two adjustable outputs are connected in parallel. Subsequently, the operator should use the C.C.-switch (20) of the master output when one of the adjustable outputs is used as constant current supply. The output current of the master and slave outputs are identical to each other and both are now controlled by (20).
-Use test leads to connect the two positive and negative terminals of the master and slave outputs when the two adjustable outputs are connected in parallel. This is necessary to ensure a reliable connection between the load and the two outputs connected in parallel. The current of the two outputs may not be identical if the load is connected to only one output terminal. This may cause damage to series/parallel switches (11) and (12).
-The digital display carries 3 digits. Use a more precise measuring instrument to calibrate the load if you need a more accurate indication.
4)Warning
-The 5V-output has optimal protection thanks to the short-circuit protection and the current-limiting point, a feature also present in the two adjustable outputs. The power loss in case of short circuit is limited thanks to the protection circuit that controls the power loss of the transistors in the power supply. This feature keeps the device from being damaged. Nevertheless, the short circuit should be repaired as soon as possible in order to prevent wear and unnecessary power consumption.
-Store the device in a dry and well-ventilated environment and keep it clean. Remove the power plug if the device is to be stored for a prolonged period of time.
Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage or injury resulted from (incorrect) use of this device. For more info concerning this product and the latest version of this user manual, please visit our website www.velleman.eu. The information in this manual is subject to change without prior notice.
© COPYRIGHT NOTICE
This manual is copyrighted. The copyright to this manual is owned by Velleman nv.
All worldwide rights reserved. No part of this manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise without the prior written consent of the copyright holder.
25.01.2010 |
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©Velleman nv |
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