Elenco XP752A 050VDC @ 3A LCD Display Owner Manual

Elenco XP752A 050VDC @ 3A LCD Display Owner Manual
Variable
Regulated Voltage
Power Supply
Instruction
Manual
Model XP-605 / XP-752A
Copyright © Elenco® Electronics, Inc.
REV-D
DC POWER SUPPLY
1
2
13
4
5
CURRENT
VOLTAGE
C.C.
C.V.
6
7
FINE
COARSE
ON
FINE
OFF
–
3
COARSE
GND
+
8
POWER
9
10
1. Voltage Meter
2. Ammeter
3. Coarse Voltage Adjustment
4. Fine Voltage Adjustment
5. Coarse Current Adjustment
6. Fine Current Adjustment
7. Constant Current Mode Indicator LED
8. Constant Voltage Mode Indicator LED
9. Power Switch
10. Negative Output Terminal
11. Ground Terminal
12. Positive Output Terminal
13. Zero Adjust (XP-605 only)
14. AC Input Voltage Switch
15. AC Input
16. Fuse Holder
-1-
11
12
14
15
16
INTRODUCTION
Congratulations on your selection of a top quality power
supply! The XP-605 has an output of 0-30VDC @ 5A; the XP752A has an output of 0-50VDC @ 3A. Their features include
fine and coarse controls for voltage and current, and contains
two analog volt/amp meters (XP-605); two digital volt/amp
meters (XP-752A).
The supply incorporates an externally controlled current cutoff
circuit with an LED indicating current overload. Protected
against short circuits and overloads.
FEATURES
Displays for voltage & current
(analog - XP-605, LCD - XP-752A)
Independent voltage and current controls
Constant voltage (CV) or constant current (CC) operation
LED indication for CV and CC for variable outputs
Overload and short protected.
Selectable AC input voltage, 115 or 230VAC
SAFETY PRECAUTIONS
Certain safety precautions must be observed when this power
supply is used with external circuits that are connected to AC
power lines. There is always some danger when working with
electrical equipment or circuits that operate at hazardous
voltages. You should thoroughly familiarize yourself with the
equipment before using it. High voltage may appear at
unexpected points in defective equipment.
The unit is equipped with a three-wire line cord which grounds
the chassis to power line ground. Do not cut off or disable the
ground plug. The power supply secondary circuits are isolated
from the 115/230V primary circuit via the power transformer.
When working with other equipment, this may not always be
the case. Always be familiar with the equipment rating. Keep
in mind that defective equipment can have dangerous voltages
in unexpected places.
-2-
OPERATING INSTRUCTIONS
1. Set the AC input voltage switch on the back to the correct
setting and the correct fuse (6A - 115V, 3A - 230V) installed.
2. Set the power switch to the off position.
3. Plug the power cord into the power socket on the back of
the unit.
4. Plug the power cord into an AC output. Note: Make sure
enough space is left for heat dissipation.
5. Check that the voltage rating of the equipment does not
exceed the power supply’s rating.
Constant Voltage Mode
1. Turn the current control (coarse and fine) knobs fully
clockwise and the voltage control knobs fully counterclockwise.
2. Press the power ON/OFF switch to ON. The CV LED should
be lit.
3. Turn the voltage control knobs clockwise to the desired
output voltage.
4. Connect the positive and the negative output terminals to a
load or similar component.
Constant Current Mode
1. Turn the voltage control knobs (coarse and fine) fully
clockwise and the current control knobs (coarse and fine)
fully counter-clockwise.
2. Press the power ON/OFF switch to ON. The CC LED should
be lit.
3. Connect the positive and the negative output terminals to a
load or similar component.
4. Turn the current control knobs clockwise to the desired
output current value.
-3-
Note XP-752A: Current limiting less than 1/2A or a shorted
output activates the short circuit protection, turning the unit off.
To reset unit, remove the short or load and readjust current
limiting control.
Setting Current Limit Protection Mode
1. Adjust the current and voltage control knobs to the desired
output voltage.
2. Short the positive to the negative output terminal.
3. Press the power ON/OFF switch to ON. The CC LED should
be lit.
4. Turn the voltage coarse knob clockwise 1/4 turn.
5. Set the maximum output current by turning the current
coarse knob clockwise.
This now limits the output current to your setting.
CAUTION:
• In the event of a short circuit at the output, the current will
limit at the value set by the current controls. However, the
unit should be turned OFF and the short circuit removed
before continuing use.
• The unit must be unplugged before servicing. Servicing
should be performed by a qualified repairperson with
knowledge in electrical hazards.
• The unit should be stored in a dry and well-ventilated place
and the power cord removed if storing for a long period of
time.
• Never place any objects on the power supply.
• Do not obstruct the ventilation holes.
• Avoid contacting the heat sink of the power supply as it can
become very hot. Contacting the heat sink when it is hot
could result in skin burns or damage to the equipment in
contact with them.
-4-
• Never move or pull the power supply using the power cord
or output lead.
• The unit is designed for INDOOR USE ONLY.
SPECIFICATIONS
Model
Output
Current
Line Regulation
Load Regulation
Ripple & Noise
CV
CV
CV
CC
CC
CC
XP-752A
0-50V
3A
< 0.01% +1mV < 0.2% +1mA < 0.01% +3mV < 0.2% +3mA < 0.5mV rms
< 3mA rms
XP-605
0-30V
5A
< 0.01% +1mV < 0.2% +1mA < 0.01% +3mV < 0.2% +3mA < 0.5mV rms
< 3A
< 3A
< 3A
< 0.01% +5mV < 0.2% +5mA < 1.0mV rms
> 3A
> 3A
> 3A
< 3mA rms
< 3A
< 6mA rms
> 3A
Input Voltage
104 – 127VAC (60Hz)
207 – 253VAC (50Hz)
Protection
Current limit and
short circuit protection
Voltage Display Accuracy
LCD +1% +2 digits,
Analog +2.5% FSR
Current Display Accuracy
LCD +2% +2 digits,
Analog +2.5% FSR
Environment:
32OF - 104OF (0OF - +40OC),
relative humidity <90%
Dimensions (H x W x L)
6¼” x 5¼” x 11½”
(15.9 cm x 13.3 cm x 29.2 cm)
Weight
10.1 lbs. / 4.58 kg. (XP-605)
9.85 lbs. / 4.47kg. (XP-752A)
-5-
MAINTENANCE
Cleaning – Using a soft moistened cloth, remove any dirt on
the outside of the case. The power supply should be used in
a normal working environment.
Servicing – If the unit becomes inoperative or damage,
Elenco® Electronics or a qualified repairperson should only
perform the repair and calibration.
Fuse Replacement
The power supply will not work if the fuse is blown or not
installed. Check and repair any existing problems before
installing new fuse. Only use fuses with same specification as
original the one.
Warning - To prevent fire use only 250V or greater with the
specified current.
1. Disconnect the AC power before replacing the fuse.
2. Insert a small screwdriver into fuse holder slot (located
between fuse holder and receptacle) and pry fuse holder
from receptacle.
3. Replace the blown fuse and insert holder into receptacle.
Be sure that the fuse is installed so that the correct line
voltage is selected.
Elenco® fuse part numbers:
AC Power 230V
AC Power 115V
3A fuse 250V (5 x 20mm)
6A fuse 250V (5 x 20mm)
Part #: 530300
Part #: 531030
4. Plug line cord back into the AC output and test unit.
-6-
TWO YEAR WARRANTY
All Elenco® models are guaranteed for two full years on
all parts and service. For the first 3 months, your power
supply is covered at absolutely no charge. For the
remaining 21 months, a nominal service charge is
required to cover shipping and handling.
When returning merchandise for repair, please
include proof of purchase, a brief letter of
explanation of problem, and sufficient packing
material. Before returning any merchandise please
call our service department at (847) 541-3800 to
obtain a return authorization number (RMA).
Elenco® Electronics, Inc.
150 Carpenter Avenue
Wheeling, IL 60090
(847) 541-3800
Website: www.elenco.com
e-mail: elenco@elenco.com
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