User manual

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OPERATING INSTRUCTIONS
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Version 11/08
Linear Power Supply Unit PS-1302D
Item-No. 51 18 06
Intended Use
The power supply unit is intended for connecting, and operating, low voltage loads with an oper-
ating voltage of 0 to 30 VDC, via 4mm safety sockets.
The current consumption of the consumer load connected must not exceed 2 A. If this is exceeded,
the power supply unit may be overloaded. If the power supply is overloaded, e.g. due to a short-
circuit or drawing excessive current, the output is shut off to avoid damage. After removing the
overload, the power supply unit can be put back into operation.
The power supply unit complies with protection class 1. It is only approved for connection to a
mains socket with a protective earth and a normal AC voltage of 230V 50Hz.
Do not use in adverse ambient conditions. Unfavourable ambient conditions are:
- Excessive humidity or damp
- Dust and flammable gases, vapours or solvent,
- Thunderstorms or similar conditions such as strong electrostatic fields etc.
Any use, other than the one described above, may damage the product. Moreover, this involves
hazards such as e.g. short circuit, fire, electric shock, etc. It is not allowed to modify or rebuild
any part of the product!
Observe the safety instructions in their entirety!
Safety Instructions
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Please read all of the operating instructions before using the product for the
first time; they contain important information about the correct operation.
The warranty will be void for damage arising from non-compliance with these
operating instructions! Liability for any and all consequential damage is
excluded!
We do not assume any liability for material and personal damage caused by
improper use or non-compliance with the safety instructions! The warranty is
voided in these cases.
This device left the manufacture’s factory in a safe and perfect condition.
We kindly request the user to observe the safety instructions and warnings contained in the enclosed
operating instructions so this condition is maintained and to ensure safe operation. The following
symbols must be observed:
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Note! Read the operating instructions!
The product is CE compliant and meets the requirements of the current European and
national guidelines.
Connection terminal for the internal protective earth; this screw/contact must not be
unscrewed.
Only to be used in dry indoor areas.
The unauthorized conversion and/or modification of the product is inadmissible for reasons of
safety and approval (CE).
If you have doubts about how the equipment should be operated or how to connect it safely, con-
sult a trained technician.
The device must not be opened. If you open covers or remove parts, unless you can do this by
hand, life parts may be exposed. Capacitors inside the device may still be charged, even if the
device has been disconnected from all voltage sources.
Observe the safety and operating instructions of any devices you connect to the device, as well
as those you find in the individual chapters of these operating instructions.
Never touch the device with wet or moist hands. There is danger of a life-threatening electric
shock.
Do not leave mains power supplies and connected consumer devices in operation unattended.
Only use fuses of the rated type and current. It is absolutely prohibited to use repaired fuses.
Do not use non-insulated metallic leads.
Keep the unit out of the reach of children. It is not a toy.
On industrial sites, the accident prevention regulations of the association of the industrial workers’
society for electrical equipment and utilities must be followed.
Power supply units used at schools, training facilities, do-it-yourself and hobby workshops should
not be handled unless supervised by trained, responsible personnel.
The device will become warm during operation. Ensure there is sufficient ventilation provided; do
not cover the housing! Do not touch the cooling element on the rear during operation. Risk of
burns!
If you have a reason to believe that the device can no longer be operated safely, disconnect it
immediately and secure it against being operated unintentionally. It can be assumed that safe
operation is no longer possible if:
• the device is visibly damaged,
• the device no longer works and
• the unit was stored under unfavourable conditions for a long period of time or
• if it has been subjected to considerable stress in transit.
You should also heed the additional safety instructions in each chapter of the operating instruc-
tions for the connected devices.
Never switch the device on immediately after taking it from the cold into a warm environment.
Condensation that forms might destroy your device. Allow the device to reach room temperature
before switching it on.
The power supply unit is not designed for attaching to humans or animals.
Controls
(1) Power switch for switching the device on (1=ON / 0=OFF)
(2) Power indicator
(3) Ampere meter (A) and voltage display (V) switch
(4) 4 mm safety socket “earth potential” (earth)
(5) 4 mm safety socket “negative pole” (-)
(6) 4 mm safety socket “positive pole” (+)
(7) Output voltage control, for voltages in the range 0 to 30 V
(8) Output voltage control, for voltages in the range 0 to 2 V
(9) OT warning signal for overheating/shutdown
(10) CC-display with active current limiting
(11) LC-display for output voltage and ampere meter
(12) Cooling element (rear); heats up during operation!
(13) cooling slits
(14) Mains fuse holder (rear)
(15) Earthed non-heating connection (mains connection, IEC C14)
Functional description
The DC output of the power supply unit is electrically isolated and features protective separation
from the mains voltage.
The output voltage can be adjusted from 0 to 30 VDC using the controller (7). The current limita-
tion, between 0 and 2 A, is performed via the controller (8). The current output voltage can be dis-
played, alternating with the output current, in the display (11).
A secondary side DC connection is possible via two coloured 4mm safety sockets (5 and 6).
The power supply unit is cooled by convection; ensure there is sufficient ventilation and space.
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The power supply unit has an adjustable current limitation. It becomes active
(displaying CC) when the preset current limitation is exceeded due to overload-
ing or a short circuit. It electronically reduces the output voltage to avoid dam-
age to the power supply unit.
Startup
General Information
To operate the power supply unit you need a mains lead with shock-proof plug (not included).
Connect the mains lead to the IEC input (15) on the rear of the power supply unit and plug the
mains plug into an earthed mains socket.
You can order a suitable mains cable, stating the order number 51 11 29.
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The power supply is not a charger. To charge batteries, use suitable chargers
with a charging current cut-off.
Always turn the device off when it is not in use.
Setting the desired output voltage
• Ensure that there are no loads connected to the mains power supply.
• Switch on the power supply using the power switch (1); the power indicator (2) should light up.
• Ensure the selector switch (3), for the display, is not depressed (symbol “V”). The output voltage
is displayed.
• Set the current controller “CURRENT” (8) to the middle position.
• Use the controller “VOLTAGE” (7) to set the desired output voltage. The voltage is indicated on
the display (11).
Setting the current limitation
In order to protect the consumer device, the maximum output current can be set and limited.
• Ensure that there are no loads connected to the mains power supply.
• Switch on the power supply using the power switch (1); the power indicator (2) should light up.
• Set the current controller “CURRENT” (8) to the left - minimum position.
• Short circuit the two connectors, minus (5) and plus (6), with a jumper (e.g. measuring line).
Ensure there is sufficient conductor cross-section. It should be at least 0.5mm
2
.
• Use the switch (3) to display the current and set it in the depressed position (symbol “A”). The
maximum output current is displayed.
• Use the current controller “CURRENT” (8) to set the desired maximum output current. Remove
the jumper from the power supply unit.
• Pressing the switch (3) again lets the display jump back to the output voltage.
Connecting a device
• Make sure the load is switched off.
• Verify that the correct output voltage has been set on the power supply unit.
• Connect the plus pole (+) of the consumer device to the red terminal “+” (6) and the minus pole
(-) of the consumer device to the black terminal “-” (5).
• The connection is made using standard 4mm plugs.
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Make sure that the load is switched off when making connections to the power
supply unit. If the load is switched on, it can cause sparking while connecting
to the sockets. This can damage the sockets, as well as the connected cables.
Maintenance and Cleaning
Except for replacing the fuse and occasional cleaning, the power supply unit does not require any
maintenance.
Use a clean, lint-free, antistatic and slightly damp cloth to clean the device. Do not use any abra-
sive or chemical agents or detergents containing solvents.
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Always unplug the power supply unit from the mains socket before cleaning
the device.
Changing the fuse
If it is no longer possible to switch on the power unit, the
mains fuse is probably defective.
Proceed as follows to replace the mains fuse:
• Turn off the power supply unit and remove all connecting
cables from the unit. Pull the mains plug from the rear con-
nection (15).
• Remove the rear fuse holder (14) with a suitable screw-
driver from the bracket.
• Replace the defective fuse with a new fine-wire fuse (5x20
mm) of the same type and rated current: T1,25A / 250V
(inert)
• Replace the fuse carefully into the fuse holder.
Troubleshooting
By purchasing this power supply unit you have acquired a product with state of the art design that
is operationally reliable.
Nevertheless, problems or faults may occur.
This is why we would like to describe here, how possible problems can be solved:
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Always follow the safety instructions!
Problem Solution
The operation indicator No mains voltage?
is off. • Check the safety switch for the mains socket.
• Check whether the mains plug is seated correctly in the
mains socket.
• Check the mains fuse in the power supply unit.
The “OT” indicator is lit The power supply unit has overheated.
• Remove the load and let the device cool down. Check the
technical data.
Connected consumer devices Is the voltage set correctly?
do not work. Is the polarity correct?
Has the power supply overloaded or is the current limitation
(display “CC”) active?
Check the technical data for the consumer device and
increase the current limitation settings, if necessary.
The display does not change Check the switch for the display. For it must not be
voltage settings depressed to indicate the voltage (see symbol "V").
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Repairs, other than those described, should only be carried out by an autho-
rised specialist. Check the technical safety of the device on a regular basis e.g.
for damage to the housing etc. Any changes and repairs you make on the
device will cause the warranty to lapse.
Disposal
Electronic products are raw material and do not belong in the household waste.
When the device has reached the end of its service life, please dispose of it, accor-
ding to the current statutory requirements, at your local collecting site. Disposal in
the domestic waste is not permitted!
Technical Data
Operating voltage ................................................230 V~ / 50 Hz (+/- 10%)
Power consumption..............................................170 VA max.
Output voltage......................................................0 - 30 V/DC
Output current ......................................................0 - 2 A
Residual amplitude ..............................................<5 mV rms (rms=effective)
Response to a load change 0~100% ..................< 40 mV / 25 mA
Control reaction to current changes ± 10% ........<50 mV/50 mA
Mains fuse (5x20mm) ..........................................Fine fuse, slow-trigger, 1.25A / 250 V
Operating temperature ........................................+ 5 ∞C to + 40 ∞C
Rel. air humidity ..................................................max. 85%, non-condensing
Protection class....................................................1
Dimensions (W x H x D) ......................................approx. 207 x 105 x 215 (mm)
Weight: ................................................................approx. 3.2 kg
VOLTCRAFT
®
Impressum /legal notice in our operating instructions
These operating instructions are a publication by Voltcraft
®
, Lindenweg 15, D-92242 Hirschau/Germany, Phone [phone] (www.voltcraft.de).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data processing
systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
These operating instructions represent the technical status at the time of printing. Changes in technology and equipment reserved.
© Copyright 2008 by Voltcraft
®
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