DayStar DS-1000 Manuel utilisateur
DS-1000
I-V CURVE TRACER
User Manual
Daystar, Inc.
3240 Majestic Ridge
Doc Version 7100 Las Cruces, NM 011
Jan 2016 575-522-4943
http://www.daystarpv.com
daystar, inc.
This I-V curve tracer was built to Daystar, Inc. specifications by:
Raydec, Inc.
82 0 La Mirada, Suite 700
Albuquerque, New Mexico 87 09
DS-1000 Operating Manual page i
CONTENTS
CONTENTS ................................................................................................................................. i
WARNINGS ................................................................................................................................. iii
NOMENCLATURE ....................................................................................................................... iv
1.0 Installation & Taking I-V Curves ....................................................................................... 5
Basic Description ...................................................................................................... 5
IVPC Installation ....................................................................................................... 6
Precautions ............................................................................................................... 6
Connecting a Computer to the DS-Tracer ................................................................ 7
Connecting a PV Module to the DS-Tracer .............................................................. 7
Starting IVPC ............................................................................................................
Taking an I-V Curve .................................................................................................. 9
If There Is an Error ................................................................................................... 13
Displaying I-V Curves ............................................................................................... 13
Summary of Steps for Taking I-V Curves ................................................................. 14
2.0 Panel Layout ....................................................................................................................... 15
PV Test Lead Connector .......................................................................................... 16
AC Power Entry & Fuse ............................................................................................ 16
DC Supply Input & Fuse ........................................................................................... 17
ON-Off Switch ........................................................................................................... 17
Full Charge Indicator ................................................................................................ 17
Aux USB Port ............................................................................................................ 17
Main USB Port .......................................................................................................... 1
Thermocouple Inputs ................................................................................................ 1
RS-232 Serial Port .................................................................................................... 1
Aux Analog Inputs ..................................................................................................... 19
Irradiance Inputs ....................................................................................................... 19
page ii DS-1000 Operating Manual
3.0 Theory of Operation ........................................................................................................... 20
Data Sampling .......................................................................................................... 20
Curve Sweep ............................................................................................................ 21
Pre-Charge ............................................................................................................... 21
Sweep Speed............................................................................................................ 21
4.0 Maintenance ....................................................................................................................... 23
Battery Charging and Care ....................................................................................... 23
Exterior Cleaning ...................................................................................................... 24
Transportation ........................................................................................................... 24
DS-Tracer Fuses ...................................................................................................... 25
5.0 Pre-Charge Precautions .................................................................................................... 26
6.0 DS-1000 Additional Capabilities ....................................................................................... 27
Temperature & Irradiance Inputs .............................................................................. 27
Temperature Connections.................................................................................. 27
Irradiance Connections ...................................................................................... 27
Aux Input Connections ....................................................................................... 2
Multiple Current Ranges ........................................................................................... 29
External Command Set ............................................................................................ 29
7.0 Troubleshooting ................................................................................................................. 30
Appendix A DS-Tracer ERROR CODES ................................................................................ 31
Appendix B DS-1000 USB Drivers ......................................................................................... 33
Appendix C - DS-1000 Technical Specifications ..................................................................... 35
Measurement Accuracy ............................................................................................ 35
PV Voltage Accuracy .......................................................................................... 35
PV Current Accuracy .......................................................................................... 35
Irradiance and Aux Input Accuracy .................................................................... 35
Temperature Accuracy ....................................................................................... 35
General Specifications .............................................................................................. 36
DS-1000 Operating Manual page iii
WARNINGS
THE IMPROPER USE OF THIS INSTRUMENT CAN PRESENT AN
ELECTRICAL SHOCK HAZARD THAT CAN CAUSE DEATH OR
SERIOUS INJURY.
THIS INSTRUMENT SHOULD ONLY BE USED AS DESCRIBED IN THIS
OPERATIONS MANUAL.
***
WARNING THIS INSTRUMENT MAY PRESENT AN ELECTRICAL SHOCK
HAZARD WHICH CAN RESULT IN DEATH OR SERIOUS INJURY IF THE
FOLLOWING PRECAUTIONS ARE NOT FOLLOWED:
• THIS INSTRUMENT MUST ONLY BE USED FOR TAKING ELECTRICAL CURRENT
AND VOLTAGE (I-V) CURVES OF PHOTOVOLTAIC (PV) SOLAR MODULES.
• THIS INSTRUMENT MUST NOT BE USED BEYOND ITS OPERATING RANGE.
• THIS INSTRUMENT MUST NOT BE USED BY PERSONNEL WHO DO NOT HAVE
EXPERIENCE HANDLING HIGH VOLTAGE DC AND PHOTOVOLTAIC MODULES.
• THIS INSTRUMENT MUST NOT BE USED DURING RAIN, SNOW, SLEET, OR IN
ANY AREA OF HIGH MOISTURE SUCH AS AREAS WITH STANDING WATER OR
MUD.
• THIS INSTRUMENT MUST NOT BE USED IF IT IS NOT FUNCTIONING AS
DESCRIBED IN THIS USER MANUAL .
!
page iv DS-1000 Operating Manual
NOMENCLATURE
A Amperes or Amp
Hz Hertz
I Current
I
pk
Current at peak power
Isc Short-Circuit Current: The maximum current a photovoltaic cell can
generate with the output terminals shorted
I-V Current-Voltage
V hotovoltaic
V Voltage
Voc Open-Circuit Voltage: The maximum voltage a photovoltaic cell can
generate with the output terminals open circuited
V
pk
Voltage at peak power
DS-1000 Operating Manual Additional Capabilities page 5
1.0 Installation & Taking I-V C rves
Basic Descripti n
The standard DS-1000 Tracer has three user selectable current ranges (1, 10
and 100 Amperes), three automatically selected voltage ranges (10, 100, and
1000 Volts), t o irradiance and t o temperature measurement inputs. Unless
other ise noted, this manual refers to standard DS-1000 models.
A computer running the IVPC for Windo s program controls the DS-Tracer. The
computer running the IVPC application may be connected to the DS-Tracer by
RS-232 serial or USB.
Most DS-Tracer operations are performed ith the IVPC program. Refer to the
IVPC help system for details on operating the DS-1000 I-V Tracer. Ho ever, the
basic steps for using the DS-Tracer are:
• Install and run IV C for Windows.
• Connect the DS-Tracer to the computer (either RS-232 or USB).
• Connect pyranometers and thermocouples to DS-Tracer.
• Turn on the tracer power and connect DS-Tracer test leads to V array.
• From the “Curve” menu, select New I-V Curve or press the “New Curve” button on
the toolbar.
• Enter curve information.
• ress the “Take Curve” button when ready to sweep the I-V curve.
• IV C automatically displays the I-V curve and adds it to the IV C worksheet.
To proceed ith the Installation & Quick-Start, the follo ing are needed:
• DS-Tracer I-V curve tracer and test leads.
• IV C CD-ROM or IV C download from www.daystarpv.com
• C computer running the Microsoft Windows® operating system (X through 8).
• Serial or USB cable to connect a computer to the DS-Tracer.
page 6 Installation & Taking I-V Curve DS-1000 Operating Manual
IVPC Installati n
IVPC is ritten for use ith Windo s® XP through 8 hich must be running to
operate IVPC. To install IVPC, insert the IVPC CD-ROM in the computer. Open
the IVPC CD-ROM (or alternately IVPC files do nloaded from
.daystarpv.com) and run the “setup.exe” program.
The setup program prompts for information on here to install IVPC. If unsure,
use the defaults, hich create an IVPC sub-directory ithin the Windo s
programs folder. IVPC Setup automatically installs the necessary files in the
IVPC directory and makes additions to the Windo s system directory.
Precauti ns
There are several precautions to observe before using the DS-Tracer.
• Keep the DS-Tracer battery charged. The DS-1000 has a universal power supply
that works with AC line voltages from 85 V
ac
to 264 V
ac
50/60 Hz.
• Turn the DS-Tracer power on when making or breaking connections to a V
system.
• Connect the DS-Tracer to the V array through a V system disconnect switch
capable of interrupting the short-circuit current of the array at peak-power voltage.
This allows disconnecting the DS-Tracer from the V system if a problem occurs.
• Do not connect the DS-Tracer to anything other than an open-circuit, V system.
Be sure the V array is electrically isolated from power conditioning equipment
such as charge controllers or inverters.
• Do not connect the DS-1000 Tracer to a V system with an open-circuit voltage
greater than 1000 Volts.
• Do not connect the DS-Tracer to any V system with a short-circuit current
greater than maximum 100 Amperes for a standard DS-1000.
The DS-Tracer RS-2 2 and USB ports, irradiance inputs, temperature inputs,
auxiliary analog inputs, and auxiliary charge inputs are all referenced to the
same electrical common inside the tracer. Therefore these devices must be
either electrically floating or referenced to the same electrical common.
Note: All of these connections are electrically isolated from the PV inputs.
!
DS-1000 Operating Manual Additional Capabilities page 7
C nnecting a C mputer t the DS-Tracer
The DS-1000 I-V Tracer provides t o interfaces; an RS-232 and USB port. The
RS-232 interface uses a standard female, 9 pin connector located on the DS-
Tracer front panel. The standard USB connection is labeled “Main USB.” Use
either of these connections depending on the configuration of the computer
running the IVPC program. Ho ever, only one of these ports should be
connected at a time.
Note: Special USB drivers must be installed on the computer in order to use the
USB port. See the section “Appendix B DS-1000 USB Drivers” for details on
installing these drivers.
C nnecting a PV M dule t the DS-Tracer
The DS-Tracer is connected to the PV array or module ith the test leads
provided. Before connecting a PV module, be sure the DS-Tracer po er s itch
is ON. The test lead is designed to remain connected to the DS-Tracer at all
times. It is typically unnecessary to remove this from the tracer.
For safety, the test lead should never be disconnected from the tracer while
the other end is connected to a PV system. Doing so could present an electric
shock hazard.
For safety, it is recommended that connections be made to the PV array
through a system disconnect switch rated at full PV power.
With the test lead attached to the DS-Tracer, connect the test leads to the PV
system.
!
!
page Installation & Taking I-V Curve DS-1000 Operating Manual
Starting IVPC
The follo ing description assumes the use of IVPC 3. IVPC opens to the Data
Grid indo sho n in Figure 1. IVPC Data Grid indo .. The Data Grid is a
spread sheet that lists all of the I-V curve data files stored in the I-V curve
orksheet. When starting IVPC for the first time, the Data Grid may be empty if
no I-V curves have been taken.
Figure 1. IVPC Data Grid window.
The Data Grid is as a detailed list of the I-V curves. In addition to curve names,
the data grid displays other curve data such as peak-po er or module ID. Refer
to the IVPC Help system for details.
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