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E3612A
Operating Manual
10 pgs515.88 Kb0

HP E3610A, E3611A, E3612A Operating And Service Manual

Whnt HEWLETT %L'tLM PACKARD
HP E361XA 30W BENCH SERIES DC POWER SUPPLIES
OPERATING AND SERVICE MANUAL FOR MODELS:
HP E3610A, Serials KR20600101 and above HP E3611A, Serials KR20600101 and above HP E3612A, Serials KR20600l01 and above
Table of Contents
1-2 1-2 1-2 1-3 1-4 1-4 1-4 1-4 1-4 1-4 1-4 1-5 1-5 1-5 1-5 1-5 1-5 1-6 1-6 1-6
A-1
Manual Part No. B9B9-6304 Microfiche Part No. 5959-5307
Printed:
February, 1992
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnirtgs elsewhere in this manual violates safety standards of design, manufactures, ar>d intended use of the instrument. Hewlett-Packard Company assumes no liability for the customer's failure to comply with these require­ments.
Before Applying Power
Verify that the product is set to match the available line voltage.
Ground The Instrument
This product is a Safety Class I instrument (provided with a protective earth terminal). To minimize shock hazard, the instrument chassis and cabinet must be connected to an electrical ground. The instrument must be connected to the ac power supply mains through a three-corrductor power cable,
with the third wire firmly connected to an electrical grourrd(safety ground) at the power outlet. Any interruption of the protective(grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury. If the instrument is to be energized via an external autotransformer for voltage reduction, be certain that the autotransformer common terminal is connected to the neutraKearthed pole) of the ac power lines (supply mains).
Do Not Operate in An Explosive Atmosphere
Do not operate the instrument in the presence of flammable gases or fumes.
Keep Away From Live Circuits.
Operating personnel must not remove instrument covers. Component replacement and internal adjustments must be made by qualified service personnel.
Safety Symt>ols
A
IwARNIHcj
Instrument manual symbol; the product will be marked with this symbol when it is necessary for the user to refer to the instruction manual.
Indicate earth(grour>d) terminal.
The WARNING sign denotes a hazard.
It calls attention to a proce-
dure,
practice, or the like, which, if not correctly performed or adhered to,
could result in personal injury. Do not proceed beyond a WAR­NING sign until the indicated
con­ditions are fully understocxJ and met.
The CAUTION sign denotes a haza­rd.
It calls attention to an operating procedure, or the like, which, if not correctly performed or adhered to, could result in damage to or destru­ction of part or all of the product. Do not proceed beyond CAUTION sign until the indicated conditions are fully understood and met.
GENERAL INFORMATION
Description
This operating and service manual covers three dual range HP power supplies, E3610A, E3611A, and E3612A. All models are compact, general purpose bench supplies that are particulariy useful for powering developmental IC circuits, both linear and digital. Unless stated otherwise, all information in this manual applies equally to all three models. The desired output range is selected by the front panel RANGE push button. The output can be continuously adjusted for voltage and current throughout either output range.
The front panel VOLTAGE control can be used to establish the voltage limit when the supply is used as a constant current source arrd the CURRENT control can be used to establish the output current limit when the supply is used as a constant voltage source. The CC SET push button allows the current limit value to be conveniently set using the CURRENT control without shorting the output.
The front panel includes a digital voltmeter/ammeter. A 3 1/2 digit (E3611A 3 digit) voltage display and 3 digit current display accurately show the output voltage and current respectively. The output ratings for each model are shown in the Specifications Table.
1-2
Specifications
and
Supplemental Characteristics
INPUT:
115 Vac ±
10%, 47-63 Hz,
0.8 A, 70 W
100
Vac ±
10%, 47-63 Hz,
0.8 A, 70 W
230
Vac
±10%, 47-63
Hz, 0.4 A, 70 W
OUTPUT: E3610A:
0 to 8 V, 0 to 3 A or 0 to 15 V,
0to2
A
E3611 A:
0 to 20 V, 0 to 1.5 A or 0 to 35 V,
0
to
0.85
A
E3612A:
0 to 60 V, 0 to 0.5 A or 0 to 120V,
to 0.25
A
LOAD REGULATION: Constant Voltage - Less than 0.01 % plus
2 mV for a
full load
to rto
load change
in
output current.
Constant Current - Less than 0.01 % plus
1 mA for a
zero
to
maximum change
in
output voltage.
UNE REGULATION: Constant Voltage - Less than 0.01 % plus
2 mV for any
line voltage change within
the
input rating.
Constant Current - Less than 0.01 % plus
1 mA for any
line voltage change within
the
input rating.
RIPPLE AND NOISE: Constant Voltage - Less than
200 uV rms and 2 mV
peak
topeak(10Hz-10MHz)
Constant Current - Less than
200 uA rms and 1 mA
peak
topeak(10Hz-10MHz)
TEMPERATURE RANGE:
0 to
40°C
for
full rated output.
Derate current 1%
per
degree C between 40°C-55°C
'TEMPERATURE COEFFICIENT:.
Constant Voltage - Less than 0.02% plus
1 mV per
degree
C.
Constant Current - Less than 0.02% plus
2 mA per
degree
C.
TRANSIENT RESPONSE TIME: Less than
50
usee
for
output recovery
to
within
10 mV
following a change
in
output current from full load
to
half
load,
or
vice versa.
ISOLATION:
± 240 Vdc
•OUTPUT DRIFT:
Constant Voltage - Loss than 0.1 % plus
5 mV
total drift
for 8 hours after
an
initial warm-up
of 30
minutes.
Constant Current - Less than
0.1%
plus
10 mA
total drift
for 8 hours after
an
initial warm-up
of 30
minutes.
METER ACCURACY: ±0.5%
-i- 2 counts
at
25°C
± S'C
'OVERLOAD PROTECTION:
A continuously acting constant current circuit protects
the
power supply
for all
overioads including a direct short
placed across
the
terminals.
The
constant voltage circuit
limits
the
output voltage
in
constant current operation.
•OUTPUT TERMINALS:
Three output terminals
are
provided
on the
front panel.
They are isolated from the chassis and either the positive
or
negative terminal may be connected
to
the ground terminal.
•OUTPUT CHARACTERISTICS
A
Veitt
Vo,
^2
loi
Pour
MAX
30 Watts
1^2
Cmrrcnt
NOTE:
Output voltages higher than
VQJ
are possible
at low
current when
the
high current range
is
selected.
E3610A: Vn,
=15 V V,
01
E3611A: Voi=35
V
E3612A:Voi=120V
'02-
^02
=
Vo2
'oi=2A
lo,
= 3
A
'02
= 8
V
20
V
= 60V 1(5, =0.25
A lo2
01 =0.85 A IQ2 = 1.5
A
= 0.5
A
•METER RESOLUTION Voltage: E3610A
10 mV
E3611A
100 mV
E3612A
100 mV
Current: E3610A
10 mA
E3611A
10 mA
E3612A
1 mA
•DOWN PROGRAMMING
SPEED:
Maximum time
for
output
voltage
to
change between
100% to
0.1%
of
maximum
rated output voltage
at NO
LOAD condition.
E3610A: maximum
2.5 sec
E3611 A: maximum
1.0 sec
E3612A: maximum
1.5 sec
•RESOLUTION: Minimum output voltage
or
current change
that
can be
obtained using panel controls.
E3610A: Voltage
10 mV
Current
5 mA
E3611 A: Voltage
10 mV
Current
5 mA
E3612A: Voltage
100 mV
Current
2 mA
COOLING: Convection cooling
is
employed.
WEIGHT:
8.4
lbs/3.8
Kg net, 9.3
lbs/4.2
Kg
shipping.
(NOTE) * SUPPLEMENTAL CHARACTERISTICS
1-3
D
88.1 mm
3.469
in
269.2 mm 10591
in
m
•I
m
212 3 mm
^ 8.354
in
1
1
1
iill iiiilll
l_J
l-o '
318 4 mm
•
12.534
in
FIGURE 1: OUTLINE DIAGRAM
Options
The following factory installed options are available with this instrument.
Option Description 0E3 Input Power
:
230 Vac 4^/10%, 47-63 Hz, Single Phase
0E9 Input Power
:
100 Vac
-^/-10%,
47-63 Hz, Single Phase
Instrument Identification
Hewlett-Packard power supplies are identified by one serial number. The letter "KR" designates Korea as the country of manufacture,
the
first digit indicates
the
year
(1=91,
2 =
92,
etc), the second two digits indicate the week, and
the last five digits
of
the serial number are a different
sequential number assigned to each power supply.
If the serial number on your instrument does not agree with those on the title page
of
this manual, a yellow change
sheet may be included
if
a design change has affected the
contents of this manual.
INSTALLATION
Inspection
When you receive your power supply, inspect
it
for any obvious damage that may have occurred during shipment. If there
is
damage, notify the carrier and the nearest HP Sales Office immediately. Warranty information is printed on the inside front cover
of
this manual. Save the shipping carton and packing materials in case the supply has to be returned to Hewlett-Packard in the future.
If
you return the supply for service, attach a tag identifying the owner and model number. Also include a brief description
of the
problem.
The "Turn-On Checkout Procedure" in this manual can be used as an incoming inspection check
to
verify that the supply is operational. See the appendix for tests that verify the supply's specifications.
Location And Cooling
Figure 1 shows the outline shape and dimensions
of
the
unit.
It
is shipped ready for bench operation after connec-
tion
to an ac
power source. The supply
is air
cooled.
Sufficient space should be allotted so that a free flow
of cooling air can reach the rear of the instrument when it is in operation.
It
should be used in an area where the ambient temperature does not exceed 40 degrees C. The current derates 1% per degree C between 40°C-55°C.
Input Power Requirements
Depending on the line voltage option ordered, the supply is ready to be operated from one of the power sources listed in the Specification Table. The input voltage range, and the input current ar>d power at high line voltage and full load is listed for each option.
Power Cord
This instrument is equipped with a three conductor power cable.
The third corKiuctor
is
the grourxl conductor and when the cable is plugged into an appropriate receptacle, the instrument
is
grour>ded. The offset pin on the power cable three prong connector is the ground connection. In no event should this instrument
be
operated without
an
adequate cabinet ground connection.
The power supply was shipped with a power cord for the type of outlet used at your location.
If
the appropriate cord was not included, contact your nearest HP Sales Office to obtain the correct
cord.
1-4
HEWLETT E36WA 0-ew.M/o-nr.aA PACKARD DC KMCtt SUrPLT
]:
. ON
OFF
± 2«1 VDC MAX TO 1
FIGURE 2: FRONT PANEL CONTROLS AND INDICATORS
OPERATION
Turn-On Checkout Procedure
The following checkout procedure describes the use of the front panel controls and indicators illustrated in Figure 2 arxJ ensures that the supply is operational: a. Push LINE button to ON. b. Set RANGE push button to desired range. c. Turn VOLTAGE control fully counter clockwise to
ensure that output decreases to 0 Vdc then fully clockwise to ensure that output voltage increases to the maximum output voltage.
d.
While depressing CC SET push button, turn the
CURRENT control fully counter clockwise and then fully clockwise to ensure that the current limit value can be set from zero to maximum rated value.
e. Connect load to output terminals.
WARNING
Constant Current Operation
To set up a power supply for a constant current operation, proceed as follows: a. Turn CURRENT control fully counter clockwise to
ensure that output decreases to 0 A, and then turn on power supply.
b. Adjust VOLTAGE controKno load connected) for
maximum output voltage allowable(voltage limit), as determined by load cor>ditions. During actual opera­tion,
if a load change causes the voltage limit to be
exceeded,
the power supply will automatically cross­over to constant voltage operation at the preset voltage limit and output current will drop proportion­ately.
c. Adjust CURRENT control for desired output current
while depressing CC SET button(CC LED will not light
until the supply is loaded)
Connecting Loads
The output of the supply is isolated from earth ground. Either output terminal may be grounded or the output can be floated up to 240 volts off grour>d.
Shock Hazard
Disconnect ac power before making
output terminal connections.
Constant Voltage Operation
To set up a power supply for a constant voltage operation,
proceed as follows: a. Turn on power supply and adjust 10-turn VOLTAGE
control for desired output voltage(output terminals open). CV LED should light.
b. While depressing CC SET push button, adjust 10-turn
CURRENT control for maximum output current allow­able (current limit). During actual operation, if a load change causes the current limit to be exceeded, the power supply will automatically crossover to constant current mode artd output voltage will drop propor­tionately.
Each load should be connected to the power supply output terminals using separate pairs of connecting wires. This will minimize mutual coupling effects between loads and will retain full advantage of the low output impedance of the power supply. Each pair of connecting wires should be as short as possible and twisted or shielded to reduce noise pickupdf a shield is used, connect one end to the power supply ground terminal and leave the other erxl unconnec­ted.).
Operation Beyond Rated Output
The output controls can adjust the voltage or current to values above(up to 5%) the rated output as indicated on the front panel display. Although the supply can be operated in the 5% overrange region without being damaged, it can not be guaranteed to meet all of its performance specifications in this region.
1-5
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