DayStar DS-1000 Bedienungsanleitung

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

[email protected]

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

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

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

to 264 V

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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