Keithley 2230G-30-3 User manual

Series 2230G Triple-Channel
DC Power Supply Quick Start Guide

Safety precautions
Thefollowingsafetyprecautionsshouldbeobservedbeforeusingthisproductandany
associatedinstrumentation.Althoughsomeinstrumentsandaccessorieswouldnormallybe
usedwithnonhazardousvoltages,therearesituationswherehazardousconditionsmaybe
present.
Thisproductisintendedforusebypersonnelwhorecognizeshockhazardsandarefamiliar
withthesafetyprecautionsrequiredtoavoidpossibleinjury.Readandfollowallinstallation,
operation,andmaintenanceinformationcarefullybeforeusingtheproduct.Refertotheuser
documentationforcompleteproductspecifications.
Iftheproductisusedinamannernotspecified,theprotectionprovidedbytheproduct
warrantymaybeimpaired.
Thetypesofproductusersare:
Responsiblebodyistheindividualorgroupresponsiblefortheuseandmaintenanceof
equipment,forensuringthattheequipment is operatedwithinitsspecificationsandoperating
limits,andforensuringthatoperatorsareadequatelytrained.
Operatorsusetheproductforitsintendedfunction.Theymustbetrainedinelectricalsafety
proceduresandproperuseoftheinstrument.Theymustbeprotectedfromelectricshock
andcontactwithhazardouslivecircuits.
Maintenancepersonnelperformroutineproceduresontheproducttokeepitoperating
properly,forexample,settingthelinevoltageorreplacingconsumablematerials.
Maintenanceproceduresaredescribedintheuserdocumentation.Theproceduresexplicitly
stateiftheoperatormayperformthem.Otherwise,theyshouldbeperformedonlybyservice
personnel.
Servicepersonnelaretrainedtoworkonlivecircuits,performsafeinstallations,andrepair
products.Onlyproperlytrainedservicepersonnelmayperforminstallationandservice
procedures.
KeithleyInstrumentsproductsaredesignedforusewithelectricalsignalsthatare
measurement,control,anddataI/Oconnections,withlowtransientovervoltages,andmust
notbedirectlyconnectedtomainsvoltageortovoltagesourceswithhightransient
overvoltages.MeasurementCategoryII(asreferencedinIEC60664)connectionsrequire
protectionforhightransientovervoltagesoftenassociatedwithlocalACmainsconnections.
CertainKeithleyInstrumentmeasuringinstrumentsmaybeconnectedtomains.These
instrumentswillbemarkedascategoryIIorhigher.
Unlessexplicitlyallowedinthespecifications,operatingmanual,andinstrumentlabels,do
notconnectanyinstrumenttomains.
Exerciseextremecautionwhenashockhazardispresent.Lethalvoltagemaybepresenton
cableconnectorjacksortestfixtures.TheAmericanNationalStandardsInstitute(ANSI)
statesthatashockhazardexistswhenvoltagelevelsgreaterthan30VRMS,42.4 V peak,
or60VDCarepresent.Agoodsafetypracticeistoexpectthathazardousvoltageispresent
inanyunknowncircuitbeforemeasuring.

Operatorsofthisproductmustbeprotectedfromelectricshockatall times.Theresponsible
bodymustensurethatoperatorsarepreventedaccessand/orinsulatedfromevery
connectionpoint.Insomecases,connectionsmustbeexposedtopotentialhumancontact.
Productoperatorsinthesecircumstancesmustbetrainedtoprotect themselvesfromtherisk
ofelectricshock.Ifthecircuitiscapableofoperatingat orabove1000V,noconductivepart
ofthecircuitmaybeexposed.
Donotconnectswitchingcardsdirectlytounlimitedpowercircuits.Theyareintendedtobe
usedwithimpedance-limitedsources.NEVERconnectswitchingcardsdirectlytoACmains.
Whenconnectingsourcestoswitchingcards,installprotectivedevicestolimitfaultcurrent
andvoltagetothecard.
Beforeoperatinganinstrument,ensurethatthe line cord is connected to a properly-
groundedpowerreceptacle.Inspecttheconnectingcables,testleads,andjumpersfor
possiblewear,cracks,orbreaksbeforeeachuse.
Wheninstallingequipmentwhereaccesstothemainpowercordisrestricted,suchasrack
mounting,aseparatemaininputpowerdisconnectdevice must be provided in close
proximitytotheequipmentandwithineasyreachoftheoperator.
Formaximumsafety,donottouchtheproduct,testcables,oranyotherinstrumentswhile
powerisappliedtothecircuitundertest.ALWAYSremovepowerfromtheentiretestsystem
anddischargeanycapacitorsbefore:connectingordisconnectingcablesorjumpers,
installingorremovingswitchingcards,ormakinginternalchanges,suchasinstallingor
removingjumpers.
Donottouchanyobjectthatcouldprovideacurrentpathtothecommon side of the circuit
undertestorpowerline(earth)ground.Alwaysmakemeasurementswithdryhandswhile
standingonadry,insulatedsurfacecapableofwithstandingthevoltagebeingmeasured.
Forsafety,instrumentsandaccessoriesmustbeusedinaccordancewiththeoperating
instructions.Iftheinstrumentsoraccessoriesareusedinamannernotspecifiedin the
operatinginstructions,theprotectionprovidedbytheequipmentmaybeimpaired.
Donotexceedthemaximumsignallevelsoftheinstrumentsandaccessories.Maximum
signallevelsaredefinedinthespecificationsandoperatinginformationandshownonthe
instrumentpanels,testfixturepanels,andswitchingcards.
Whenfusesareusedinaproduct,replacewiththesametypeandratingforcontinued
protectionagainstfirehazard.
Chassisconnectionsmustonlybeusedasshieldconnectionsformeasuringcircuits,NOT
asprotectiveearth(safetyground)connections.
Ifyouareusingatestfixture,keepthelidclosedwhilepowerisappliedtothedeviceunder
test.Safeoperationrequirestheuseofa lid interlock.
Ifa screwispresent,connectittoprotective earth(safetyground)usingthewire
recommendedintheuserdocumentation.
The symbolonaninstrumentmeanscaution,riskofhazard.Theusermustrefer to
theoperatinginstructionslocatedintheuserdocumentationin allcaseswherethesymbolis
markedontheinstrument.
The symbolonaninstrumentmeanswarning,riskofelectricshock.Usestandard
safetyprecautionstoavoidpersonalcontactwiththesevoltages.

The symbolonaninstrumentshowsthatthesurfacemaybehot.Avoidpersonal
contacttopreventburns.
The symbolindicatesaconnectionterminaltotheequipmentframe.
Ifthis symbolisonaproduct,itindicatesthat mercuryispresentinthedisplaylamp.
Pleasenotethatthelampmustbeproperlydisposedofaccordingtofederal,state,andlocal
laws.
TheWARNINGheadingintheuserdocumentationexplainsdangersthatmightresultin
personalinjuryordeath.Alwaysreadtheassociatedinformationverycarefullybefore
performingtheindicatedprocedure.
TheCAUTIONheadingintheuserdocumentationexplainshazardsthatcoulddamagethe
instrument.Suchdamagemayinvalidatethewarranty.
TheCAUTIONheadingwiththe symbolintheuserdocumentationexplains hazards
thatcouldresultinmoderateorminorinjuryordamagetheinstrument.Alwaysreadthe
associatedinformationverycarefullybeforeperformingtheindicatedprocedure.Damageto
theinstrumentmayinvalidatethewarranty.
Instrumentationandaccessoriesshallnotbeconnectedtohumans.
Beforeperforminganymaintenance,disconnectthelinecordandalltestcables.
Tomaintainprotectionfromelectricshockandfire,replacementcomponentsinmains
circuits—includingthepowertransformer,testleads,andinputjacks—mustbepurchased
fromKeithleyInstruments. Standard fuses with applicable nationalsafetyapprovalsmaybe
usediftheratingandtypearethesame.Thedetachablemainspowercordprovidedwiththe
instrumentmayonlybereplacedwithasimilarlyratedpowercord.Other components that
arenotsafety-relatedmaybepurchasedfromothersuppliersaslongastheyareequivalent
totheoriginalcomponent(note that selected partsshouldbepurchasedonlythrough
KeithleyInstrumentstomaintainaccuracyandfunctionalityoftheproduct).Ifyouareunsure
abouttheapplicabilityofareplacementcomponent,callaKeithleyInstrumentsofficefor
information.
Unlessotherwisenotedinproduct-specificliterature, Keithley Instrumentsinstrumentsare
designedtooperateindoorsonly,inthefollowingenvironment: Altitudeatorbelow2,000m
(6,562ft);temperature0°Cto50°C(32 °F to 122°F);andpollutiondegree1or2.
Tocleananinstrument,useaclothdampenedwithdeionizedwaterormild,water-based
cleaner.Cleantheexterioroftheinstrumentonly.Donot applycleanerdirectlytothe
instrumentorallowliquidstoenterorspillontheinstrument.Productsthatconsistofacircuit
boardwithnocaseorchassis(e.g.,adataacquisitionboardforinstallationintoacomputer)
shouldneverrequirecleaningifhandledaccordingtoinstructions.Iftheboardbecomes
contaminatedandoperationisaffected,theboardshouldbereturnedtothefactoryforproper
cleaning/servicing.
SafetyprecautionrevisionasofJune2017.

Power and environmental specifications
For indoor use only.
Power supply 2230G-30-3 AC power input level:
110 V setting: 99 V AC to 132 V AC;
220 V setting: 198 V AC to 264 V AC; 50 Hz or
60 Hz
2230G-30-6/2230G-60-3 AC power input level:
120 V AC: 108 V AC to 132 V AC;
220 V to 240 V: 198 V AC to 264 V AC; 50 Hz
or 60 Hz
Max power consumption: 2230G-30-3: 700 VA;
2230G-30-6, 2230G-60-3: 1000 VA
Max current: 10A
Operating altitude Maximum 2000 m (6562 ft ) above sea level
Operating
temperature 0 °C to 40 °C (32 °F to 104 °F), full accuracy
with maximum 80% relative humidity at up to
40 °C (104 °F), non-condensing
Storage
temperature -20 °C to 70 °C (-4 °F to 158 °F), 10% to 85%
relative humidity at up to 40 °C (+104 °F) and
5% to 60% relative humidity above 40 °C
(+104 °F) up to 70 °C (+158 °F)
Pollution degree 2
Installation category II
Carefully consider and configure the appropriate output-off state,
source, and compliance levels before connecting the instrument to a
device. Failure to consider the output-off state, source, and limit
levels may result in damage to the instrument or to the device under
test.

Introduction
The Models 2230G-30-3, 2230G-30-6, and 2230G-60-3 Triple-Channel
Programmable DC Power Supplies provide you with high resolution, high
accuracy, and high stability. They provide resolution up to 1 mV and 1 mA
to meet the needs of a variety of applications. They support
overtemperature protection. They also provide a series mode and a
parallel mode to extend the voltage or current output capacity. The output
voltage or current of each channel can be set from 0 to the maximum
value. You can set and display the voltage and current of three channels
at one time without switching, greatly simplifying the operation of a three-
channel power supply.
The Series 2230G models are listed in the following table.
Model number Description
2230G-30-3 Triple-Channel Programmable DC Power
Supply, 2 channels: 30 V, 3 A; 1 channel:
5 V, 3 A, 195 W
2230G-30-6 Triple-Channel Programmable DC Power
Supply, 2 channels: 30 V, 6 A; 1 channel:
5 V, 3 A, 375 W
2230G-60-3 Triple-Channel Programmable DC Power
Supply, 2 channels: 60 V, 3 A; 1 channel:
5 V, 3 A, 375 W

Unpack and inspect the instrument
To unpack and inspect the instrument:
1. Inspect the box for damage.
2. Open the top of the box.
3. Remove the bag that contains the documentation and standard
accessories.
4. Remove the packaging filling.
5. Remove the Triple-Channel DC Power Supply from the box.
6. Inspect the instrument for any obvious signs of physical damage.
Report any damage to the shipping agent immediately.
You should have received your 2230G-30-3, 2230G-30-6, or 2230G-60-3
power supply with the following accessories:
Calibration certificate, part number 001165500
USB cable, part number 174684100
Power cord appropriate for your location
2230G Harmonic Reduction Module (HRM), part number
016214000 (only for 2230G-30-6 and 2230G-60-3)
2230G to 2230G HRM line cord (30 cm), part number
161042300 (only for 2230G-30-6 and 2230G-60-3)
Refer to the packing list for additional items that might be shipped with
your instrument.

Front-panel overview
The front panel of a Series 2230G power supply is shown in the following
figure. Descriptions of the numbered items are in the adjacent table.
Numbe
r
Description
1 Vacuum fluorescent display (VFD)
2 Navigation wheel: Turn the navigation wheel to increase or
decrease a value or to scroll through the menus after
pressing the Menu key. When you have selected the menu
item or value you want, press the Enter key to save your
setting
3 Output terminals
4 Up, down, left, and right arrow keys, Enter, Save, and
Recall function keys
5 Numeric keypadand Esc key
6 Function keys: SELECT (CH1, CH2, CH3), V-Set (voltage
setting), I-Set (current setting), Menu, and OUTPUT On/Off
7 Power on or off switch

Keyboard overview
The keyboard of Series 2230G power supplies is shown in the following
figure.
Key descriptions:
Select channel 1.
Select channel 2.
Select channel 3.
Set the voltage limit for the selected channel.
Set the current limit for the selected channel.
Open the menu to access various Series 2230G settings.
Turn the output of all enabled channels on or off. When you turn
on the output, the CC or CV indicators are visible on the display. When
you turn off the output, the SV indicators are visible on the display. SV
indicates that the display is showing each channel’s programmed settings.
through numeric keys. Enter numbers to set values.
Return to the previous menu level.
Use left and right arrow keys to move the cursor.
Use up and down arrow keys to adjust the parameters or select an
item in the menu.
Save the present settings as a saved setup. The Series 2230G
supports up to 36 saved setups.
Return the instrument to a specified setup.
Select a menu item or confirm an operation.

Rear-panel overview
All 2230G power supply models have the same rear panel. The rear panel
is shown in the figure below. Descriptions of the numbered items follow
the figure.
Numbe
r
Description
1 Vent and fan
2 RS-232 communication interface
3 USB communication interface
4 GPIB communication interface
5 AC power input socket (including fuse)
6 Remote sense terminals and the output terminals

Front-panel user interface overview
The front-panel user interface gives you quick access to measurement
settings, system configuration, instrument status, and other functions.
Home-screen overview
The Series 2230G runs a self-test automatically when it is turned on. If the
self-test finishes with no errors, the screen below is displayed.
The first line on the home screen displays the voltage settings of all three
channels.
The second line on the home screen displays the current settings of all
three channels. The SV indicator informs the user that the display is
showing programmed settings.
Menu screen overview
When you press the key on the front panel, the system menu
screen is displayed.
The following options are displayed:
Default Set
Enable Channels
Protection Settings
Track
Combine
User Settings
System Info
Select an item by pressing the key, and then configure the
parameters.
0.000V 0.000V 0.000V
SV0.000A SV0.000A SV0.000A

Connect the instrument
Important safety information for test
systems
This product is sold as a stand-alone instrument that may become part of
a system that could contain hazardous voltages and energy sources. It is
the responsibility of the test system designer, integrator, installer,
maintenance personnel, and service personnel to make sure the system is
safe during use and is operating properly.
It is important that you consider the following factors in your system
design and use:
The international safety standard IEC 61010-1 defines voltages as
hazardous if they exceed 30 V
RMS
and 42.4 V
PEAK
, or 60 V DC for
equipment rated for dry locations. Keithley Instruments products are
only rated for dry locations.
Read and comply with the specifications of all instruments in the
system. The overall allowed signal levels may be constrained by the
lowest rated instrument in the system. For example, if you are using a
500 V power supply with a 300 V DC rated switch, the maximum
allowed voltage in the systemis 300 V DC.
Make sure any test fixture connected to the system protects the
operator from contact with hazardous voltages, hot surfaces, and
sharp objects. Use shields, barriers, insulation, and safety interlocks
to accomplish this.
Cover the device under test (DUT) to protect the operator from flying
debris in the event of a system or DUT failure.
Double-insulate all electrical connections that an operator can touch.
Double insulation ensures the operator is still protected even if one
insulation layer fails. Refer to IEC 61010-1 for specific requirements.
Make sure all connections are behind a locked cabinet door or other
barrier. This protects the system operator from accidentally removing
a connection by hand and exposing hazardous voltages. Use
high-reliability fail-safe interlock switches to disconnect power sources
when a test fixture cover is opened.
Where possible, use automatic handlers so operators are not required
to access the DUT or other potentially hazardous areas.
Provide training to all users of the system so they understand all potential
hazards and know how to protect themselves from injury.
To keep users safe, always read and follow all safety warnings provided
with each of the instruments in your system.

Install the instrument
You can use the Series 2230G power supplies on a bench or in a rack.
Please see the instructions that came with your rack-mount kit if you are
installing the Triple-Channel DC Power Supply in a rack.
To prevent damaging heat build-up and ensure specified performance,
make sure there is adequate ventilation and airflow around the instrument
to ensure proper cooling. Do not cover the ventilation holes on the top,
sides, or bottom of the instrument.
Make sure the instrument is positioned so that it is easy to reach any
disconnecting devices, such as the power cord and the power switch.
Power on the instrument
Series 2230G power supplies operate at 110 V to 120 V or 220 V to 240 V
with a frequency of 50 Hz or 60 Hz. Make sure that the AC line-voltage
indicator on the bottom of the instrument matches the AC line voltage in
your facility.

The power cord supplied with Series 2230G power supplies contains
a separate protective earth (safety ground) wire for use with
grounded outlets. When proper connections are made, the
instrument chassis is connected to power-line ground through the
ground wire in the power cord. In addition, there is a ground terminal
for each channel on the rear panel. When a channel is enabled, its
ground terminal should be connected to a protective earth. In the
event of a failure, not using a properly grounded protective earth and
grounded outlet may result in personal injury or death due to electric
shock.
Do not replace detachable mains supply cords with inadequately
rated cords. Failure to use properly rated cords may result in
personal injury or death due to electric shock.
When using the Model 2230G-30-6 or 2230G-60-3 in a country that is a
member of the European Union, you need to use the 2230G-HRM
Harmonic Reduction Module in line with the mains power cord to comply
with European Union regulations. If you use the 2230G-HRM, the
functions of the instrument are not affected.
To power on the 2230G-30-3:
1. Make sure the front-panel power switch is in the off (0) position.
2. Properly set the 110 V/220 V selector switch on the bottom of the
instrument.
3. Connect the female end of the supplied power cord to the AC
receptacle on the rear panel, as shown in the following figure.
Operating the instrument with an incorrect voltage may cause
damage to the instrument, possibly voiding the warranty.
4. Connect the plug of the power cord to a grounded AC outlet.

5. Disconnect any devices under test (DUTs) from the instrument
before turning the instrument on.
6. Turn on the instrument by pressing the POWER switch on the front
panel to the on (|) position.
To power on the 2230G-30-6 or 2230G-60-3 instrument:
When using the Model 2230G-30-6 or 2230G-60-3 in a country that is a
member of the European Union, you need to use the 2230G-HRM in line
with the mains power cord to comply with European Union regulations, as
shown in the following diagram.
1. Make sure that the front-panel power switch is in the off (0) position.
2. Properly set the 110 V/220 V selector switch on the bottom of the
instrument.
3. Connect the female end of the supplied line cord to the
AC receptacle on the rear panel.
4. Connect the plug of the supplied line cord to the AC output of the
2230G-HRM inductor.
5. Connect the female end of the supplied power cord to the AC Input
of the 2230G-HRM inductor.
6. Connect the plug of the power cord to a grounded AC outlet.
7. Disconnect any devices under test (DUTs) from the instrument
before turning the instrument on.
8. Turn on the instrument by pressing the POWER switch on the front
panel to the on (|) position.

Connections for testing
Before making the connections, prepare the wires as described in the
following table.
Connection Specifications
Front-panel output terminals AWG 22 to AWG 14
Sense terminals AWG 22 to AWG 14
The wire must be heavy enough that it does not overheat while
carrying the short-circuit current. You must meet the wiring
requirements described above.
Local sense connection
The local sense connection is used for basic operations when maximum
precision is not required. Keep the wire as short as possible to reduce
wire resistance. If you want higher measurement precision, use a remote
sense connection.
To connect the DUT to the power supply using local sense:
1. Connect the positive (+) terminals to the sense positive (S+)
terminals, and connect the negative (-) terminals to the sense
negative (S-) terminals to create a short circuit using short clips or
electric wire, as shown in the following figure.
2. Connect the positive and negative terminals of the intended channel
on the front panel to the DUT, as shown in the following figure.

Leave remote sense wires connected, even when remote sense is
not used. Disconnecting the remote sense wires will cause erratic
behavior and may damage the power supply.
DUT

Remote sense connection
You can use the remote sense connection for better measurement
precision.
To connect the DUT to the power supply using remote sense:
1. Disconnect the wires or short clips from + to S+, and – to S–.
2. Connect the S+ to the positive (+) terminal of the DUT, and connect
the S- to the negative (-) terminal of the DUT, as shown in the
following wiring diagram.
To ensure the stability of the system, use shielded twisted pair cable
between the remote sense terminals and the instrument under test.
To avoid damage to the Series 2230G, ensure that the polarity of the
connections is correct.

Basic settings
Set the voltage output or voltage limit for a specific
channel
You can set the voltage limit from 0 V to the specified maximum voltage.
To set the voltage limit:
1. Select the channel by pressing the CH1, CH2, or CH3 key.
2. Press the V-Set key.
3. Use the numeric keys, the navigation wheel, or the up, down, right,
and left arrow keys to set the voltage limit.
4. Press the Enter key to confirm the setting.
Set the current output or current limit for a specific
channel
You can set the current limit from 0 A to the specified maximum current.
To set the current limit:
1. Select the channel by pressing the CH1, CH2, or CH3 key.
2. Press the I-Set key.
3. Use the numeric keys, the navigation wheel or the up, down, right,
and left arrow keys to set the current limit.
4. Press Enter to confirm the setting.
Save the setups
To save the setups:
You can store up to 36 different setups in memory. Each setup includes a
voltage limit, current limit, and maximum output voltage for each channel.
1. After you set up the power supply, press the Save key.
2. Use the numeric keys, the navigation wheel, or the arrow keys to
select the setup memory (1 to 36) that you want to store the values
in.
3. Press Enter to confirm your setting.
Recall the setups
To recall the setups:
1. Press the Recall key.
2. Use the numeric keys or the arrow keys to select the setup that you
want to recall.
3. Press Enter.

Channel settings
Enable channels
You can enable or disable each channel using the menu. If a channel is
disabled, it remains off even when the output is turned on.
To enable or disable a channel:
1. Press the Menu key.
2. Press the down arrow key to select Enable Channels.
3. Press Enter to confirm the setting.
4. Press the down arrow key to select Channel and press Enter.
5. Press the down arrow key to select Disable CH1 or Enable CH1
(default).
6. Press Enter.
Track
You can set channel 1 (CH1) and channel 2 (CH2), channel 2 and
channel 3 (CH3), and all three channels to tracking mode. When CH1 and
CH2 tracking is on, channel 1 and channel 2 respond relative to one
another when adjustments in voltage are made. A constant ratio is
maintained between the voltage settings on the two channels.
For example, if channel 1 and channel 2 are both set to 1 V when tracking
is turned on, a one-to-one ratio is maintained and any voltage change on
channel 1 results in a corresponding change on channel 2. If channel 1 is
set to 10 V and channel 2 is set to 5 V when tracking is turned on, a
two-to-one ratio is maintained and any voltage change on channel 1
results in a voltage change of half the size on channel 2.
Example of setting up CH1/CH2 tracking mode:
1. Press the CH1 key.
2. Press the V-Set key and enter the voltage value for channel 1. For
example, set the voltage of channel 1 to 3 V.
3. Press the Enter key.
4. Press the CH2 key.
5. Press the V-Set key and enter the voltage that sets the ratio you
want maintain for channel 2. For example, set the voltage of
channel 2 to 6 V. The ratio is 2.
6. Press the Enter key.
7. Press the Menu key.
8. Use the down arrow key to go to Track, and then press the Enter
key.
9. Press the down arrow key to select Track CH1/CH2 and then press
the Enter key to turn on tracking.
10. Verify that Tis displayed between the voltage readings of channel 1
and channel 2 on the display. This indicates that the power supply is
in tracking mode.