90W DC Power Supply User Manual 1410

1410
90W DC
Power Supply
User
Manual
Safety Summary
The following safety precautions apply to both operating and
maintenance personnel and must be observed during all phases
of operation, service, and repair of this instrument. Before applying
power, follow the installation instructions and become familiar with
the operating instructions for this instrument.
GROUND THE INSTRUMENT
To minimize shock hazard, the instrument chassis and cabinet must
be connected to an electrical ground. This instrument is grounded
through the ground conductor of the supplied, three-conductor ac
power cable. The power cable must be plugged into an approved
three-conductor electrical outlet. Do not alter the ground connection.
Without the protective ground connection, all accessible conductive
parts (including control knobs) can render an electric shock. The
power jack and mating plug of the power cable meet IEC safety
standards.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable
gases or fumes. Operation of any electrical instrument in such an
environment constitutes a definite safety hazard.
KEEP AWAY FROM LIVE CIRCUITS
Instrument covers must not be removed by operating personnel.
Component replacement and internal adjustments must be made by
qualified maintenance personnel. Disconnect the power cord before
removing the instrument covers and replacing components. Under
certain conditions, even with the power cable removed, dangerous
voltages may exist. To avoid injuries, always disconnect power and
discharge circuits before touching them.
DO NOT SERVICE OR ADJUST ALONE
Do not attempt any internal service or adjustment unless another
person, capable of rendering first aid and resuscitation, is present.
DO NOT SUBSTITUTE PARTS OR MODIFY THE INSTRUMENT
Do not install substitute parts or perform any unauthorized
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modifications to this instrument. Return the instrument to Global
Specialties (Cal Test Electronics) for service and repair to ensure
that safety features are maintained.
WARNINGS AND CAUTIONS
WARNING and CAUTION statements, such as the following
examples, denote a hazard and appear throughout this manual.
Follow all instructions contained in these statements.
A WARNING statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result in
injury or death to personnel.
A CAUTION statement calls attention to an operating procedure,
practice, or condition, which, if not followed correctly, could result in
damage to or destruction of parts or the entire product.
WARNING
Do not alter the ground connection. Without the protective ground
connection, all accessible conductive parts (including control knobs)
can render an electric shock. The power jack and mating plug of the
power cable meet IEC safety standards.
WARNING
To avoid electrical shock hazard, disconnect power cord before
removing covers. Refer servicing to qualified personnel.
CAUTION
Before connecting the line cord to the AC mains, check the rear
panel AC line voltage indicator. Applying a line voltage other than
the indicated voltage can destroy the AC line fuses. For continued
fire protection, replace fuses only with those of the specified voltage
and current ratings.
CAUTION
This product uses components which can be damaged by electrostatic discharge (ESD). To avoid damage, be sure to follow proper
procedures for handling, storing and transporting parts and
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subassemblies which contain ESD-sensitive components.
Compliance Statements
Disposal of Old Electrical & Electronic Equipment (Applicable in the
European Union and other European countries
with separate collection systems). This product is
subject to Directive 2012/19/EU of the European
Parliament and the Council of the European
Union on waste electrical and electronic
equipment (WEEE), and in jurisdictions adopting
that Directive, is marked as being put on the
market after August 13, 2005, and should not be
disposed of as unsorted municipal waste. Please
utilize your local WEEE collection facilities in the
disposition of this product and otherwise observe
all applicable requirements.
1 INTRODUCTION
The 1410 Power Supply is a high quality serial control type DC
Regulated Power Supply. This model can be operated at constant
voltage or constant current mode whose output can be varied from
0 to 30 volts.
This compact unit has separate 3-digit LED voltage and
current meters for monitoring of the output voltage and current
simultaneously. In terms of operability, the 1410 enables high
precision, continuous variability via coarse and fine adjust knobs.
The 1410 can be connected in parallel with multiple units of the
same model, set up in “Master/Slave” configuration, to increase the
output current capability.
Serial connection of multiple units can be used to increase the
output voltage level.
The 1410 provides clean and stable DC output which is most
suitable for many areas including laboratory, industrial, field service,
hobby, and educational applications.
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2 FEATURES
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Constant voltage / constant current power supply which
features excellent line and load regulations, low ripple and
noise characteristics.
The unit features separate voltage and current meters
so that output voltage and current can be monitored
simultaneously.
Output voltage and current can be adjusted continuously in
full range to any desired values. Adjustment can be done
easily and precisely by using separate coarse and fine
adjust knobs.
The constant current circuit operates to protect against
overload and output short circuit. The limiting current values
can be preset in the full range of the rated values.
Multiple units of the 1410 can be connected in series to
provide higher output voltage.
Multiple of the 1410 can be connected in parallel (Master/
Slave configuration) to achieve higher output current.
3 SPECIFICATIONS
All specifications apply to the unit after a temperature stabilization
time of 15 minutes over an ambient temperature range of 25 °C ± 5
°C.
1410 Power Supply
Output Voltage
0–30 V
Output Current
3A
CONSTANT VOLTAGE CHARACTERISTICS
Load regulation (0-100%)
0.02% +3 mV
Line regulation ( ± 6% )
0.02% +3 mV
Ripple and noise r.m.s
1 mV
CONSTANT CURRENT CHARACTERISTICS
Load regulation (0-100%)
0.02% +3 mA
Line regulation ( ± 6% )
0.02% +3 mA
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OUTPUT
Output terminals ( color )
( + ) Red, ( – ) Black,
(GND) Green
Ground proof voltage
±180 V
INSTRUMENTATION
Voltmeter
3 digits
Ammeter
3 digits
FUNCTIONS
Serial connection
( independent control mode )
Can be connected in
series (within limits of
ground proof voltage)
Parallel operation
( master – slave mode )
Can be operated in
“one-control” parallel
configuration (only same
model)
COOLING SYSTEM
Natural Convection
POWER CONSUMPTION
VA / W
( for rated load of AC 220 V )
Approximate 220
INPUT VOLTAGE
Voltage, Frequency
120/240 VAC, 50/60 Hz
Switchable
Operating ambient temperature
5–40°C
10–80% R.H.
DIMENSIONS AND WEIGHT
Dimensions ( W x H x D )
205 x 115 x 270 ( mm )
Weight
Approximate 7.4 kg
FUSE RECOMMENDED
Input fuse F2
AC 100V, 110V, 120V
3AF
AC 220V, 230V, 240V
2AF
Internal fuse F1
500 mAF
Specifications are subject to change without notice. To ensure the
most current version of this manual, please download the current
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version from our website: globalspecialties.com.
4 PRECAUTIONS FOR USE
1.1 CONFIRMING THE SUPPLY RANGE
The unit must be used within its specified range. The rated input
voltage can be found on the rating label under the unit. Before
plugging into the AC supply outlet, check if the input rating conforms
with your local supply. A voltage selector is on the back of the unit.
Switch the voltage selector to the correct position before use.
1.2 PRECAUTIONS FOR CONNECTION OF
OUTPUT TERMINALS
This unit is a floating type power supply. For ordinary use, be sure
that the master/slave switch on the rear panel is set to master
position and either the (+ ) output terminal or the ( − ) terminal is
connected to the GND terminal ( chassis GND ) via the shorting bar.
1.3 OPERATING ENVIRONMENT
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Be sure to use this unit within the specified ambient
temperature range listed in the specification table.
Because the unit is cooled by natural convection, do not
place objects on top to block the convection. Also user must
avoid to place the unit on or rear any heat emitting devices
or use multiple units in stacked configuration. For best
result, use the unit in an environment that is as well crossventilated as possible.
Altitude up to 2000 m
Installation category : CAT II
Pollution degree : 2
Indoor use only
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5 EXPLANATION OF PANELS
1.1 FRONT PANEL
Figure 1
1.
Power Switch
2.
DC Voltmeter
3.
DC Ammeter
4.
Constant Current Mode (C.C.) Indicator
5.
Constant Voltage Mode (C.V.) Indicator
6.
Voltage Coarse Adjust
7.
Voltage Fine Adjust
8.
Current Coarse Adjust
9.
Current Fine Adjust
10. Output Terminal Positive (+)
11. Output Terminal Negative (–)
12. Ground Terminal (GND)
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1.2 REAR PANEL
Figure 2
13. Master/Slave Switch
14. In/Out Terminals for Master/Slave Operation.
15. Heat Sink
16. Main Fuse
17. Power Cable
6 OPERATION PROCEDURES
1.1 STAND-ALONE OPERATION
When using the power supply in stand-alone mode, simply operate
by manipulation of the panel switches and adjustment knobs as
needed.
However, be sure that Master/Slave Switch is set to MASTER
position.
1.2 SERIAL CONNECTION
Two or more units of the 1410 can be connected in series to
achieve higher output voltage. The resulting output will be sum of
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the outputs of the individual units. In this situation; however, care
must be taken that the voltage of neither of the terminals, with
respect to the chassis GND, exceed the ground proof voltage of
+180 V.
1.2.1 SINGLE VOLTAGE CONNECTION
For connection as shown in Figure 3, the output voltage will be the
sum of individual supplies and output current will be limited to within
the value specified for a single unit whichever is lower. For positive
ground terminal to output positive point and for negative ground
system, connect the ground terminal to the negative output point.
1.2.2 PLUS / MINUS CONNECTION
For connection as shown in Figure 4 where the intermediate point is
hooked up to ground, the configuration can be used as Plus/Minus
power supply.
Figure 3
Figure 4
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1.3 PARALLEL OPERATION ( MASTER/SLAVE
CONTROL )
Two or more units of the 1410 can be connected in parallel to give
an increase in output current capacity. The total output current
capacity will be the sum of the output currents of the individual units.
In this mode of operation, one supply will act as the master and all
settings are from the master unit.
NOTE
When connecting the supplies in
parallel, be sure that all the power
supplies are turned OFF.
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1.3.1 CONNECTION PROCEDURES
Switch OFF the power of all units.
Slide the Master/Slave Switch, Figure 5, on all the slave
units from MASTER to SLAVE position.
Connect the In/Out terminals for Master/Slave operation as
shown in Figure 5.
Connect the output terminals of each of the units to the
load as shown in Figure 6. For proper performance, use all
cables of same length and thickness.
Set the voltage and current adjustment knobs of all the
slave units to the maximum position.
Switch “ON” the master and slave units. The output voltage
and current can then be controlled via the adjustment knobs
on the master unit. In the case where the output goes to “0”
ampere during parallel operation mode, the output voltage
will cease to be controlled by the master unit. Be sure to
keep a minimum current flowing that is at least several
percent of the rated current at all times.
1.3.2 CONNECTION OF TERMINAL ON REAR PANEL
While pressing on the slit portion of the terminal with a small screw
driver, insert the connecting cable into the round hole. When
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insertion is completed, release the screw driver. See Figure 7.
Figure 5
Figure 6
Figure 7
7 MAINTENANCE
WARNING
The following instructions are for use by qualified personnel only.
To aviod electrical shock, do not perform any servicing other than
contained in the operating instructions unless you are qualified to do
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so.
1.1 MAIN FUSE REPLACEMENT
If the main fuse blows, the power on LED indicator will not light and
power supply will not operate. The fuse should not normally open
unless a problem has developed in the unit. Try to determine and
correct the cause of the blown fuse, then replace only with a fuse of
correct rating. The fuse is located on the rear panel and fuse rating
can be found next to the fuse holder. If the problem persists, return
the unit to Global Specialties for service.
1.2 CALIBRATIONS
This unit has been accurately calibrated at the factory before
shipment. Re-calibration is recommended only if repairs have
been made in a circuit affecting calibration accuracy, or if you have
reason to believe the unit is out of calibration.
However, calibrations should be attempted only if a 3½ digit
multimeter with an accuracy of +0.5% VDC or better, and a 0–50 Ω,
250 W adjustable resistive load is available.
If re-calibration is required, use the following procedures. Location
of the electrical calibration on the main PCB is shown in Figure 8.
Figure 8
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1.3 VOLTAGE CALIBRATION
Connect the multimeter to measure the DC voltage across
the power supply (+) and (–) output terminals.
zz Turn on the power supply, and turn the panel VOLTAGE
adjustment knob fully clockwise (maximum output).
zz Adjust trimmer VR11 for a reading (Vmax. +0.5) ±0.1 volts
on the multimeter. Vmax is the maximum normal output of
the specific model under calibration.
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1.4 VOLTAGE ALIGNMENT
Set the output voltage to about half the maximum allowable
output.
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Ajust the trimmer VR-1 on the back of meter PCB.
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1.5 CURRENT CALIBRATION
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Connect the 0–50 Ω /250 W resistive load in series with the
multimeter to measure the DC output current terminals.
Adjust trimmer VR-5 fully anti-clockwise (referring to the
component side).
Adjust the output voltage to the its maximum allowable
output.
Adjust the variable resistive load to obtain (Imax +0.1) ±0.02
amps on the multimeter. Imax is the maximum nominal
allowable output current.
Adjust trimmer VR-5 clockwise slowly until the limiting point
is just reached and the C.C. LED lights up at the same time.
1.6 AMMETER ALIGNMENT
Adjust the output voltage to half of its maximum allowable
output voltage.
zz Adjust the variable resistive load to obtain half of its
maximum allowable current.
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Adjust the trimmer VR-2 on the back of meter PCB.
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8 Service and Warranty Information
1.1 LIMITED ONE-YEAR WARRANTY
Cal Test Electronics warrants this product to be free from defective
material or workmanship for a period of 1 year from the date of
original purchase. Under this warranty, Cal Test Electronics is
limited to repairing the defective device when returned to the
factory, shipping charges prepaid, within the warranty period.
Units returned to Cal Test Electronics that have been subject to
abuse, misuse, damage or accident, or have been connected,
installed or adjusted contrary to the instructions furnished by Cal
Test Electronics, or that have been repaired by unauthorized
persons, will not be covered by this warranty.
Cal Test Electronics reserves the right to discontinue models,
change specifications, price, or design of this device at any time
without notice and without incurring any obligation whatsoever.
The purchaser agrees to assume all liabilities for any damages
and/or bodily injury which may result from the use or misuse of this
device by the purchaser, his employees, or agents.
This warranty is in lieu of all other representations or warranties
expressed or implied and no agent or representative of Cal
Test Electronics is authorized to assume any other obligation in
connection with the sale and purchase of this device.
1.2 CALIBRATION AND REPAIR
If you have a need for any calibration or repair services, please visit
us on the web at: globalspecialties.com. See the “Service” tab. Or
contact us via the “Contact” tab. You may also contact us at:
Global Specialties®
(A Cal Test Electronics Company)
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
800-572-1028 or 714-221-9330
globalspecialties.com
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20160930

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