AMETEK SGI Series User Manual

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SGI Series DC

Power Supplies

Operation Manual

M550221-01 Rev AA www.programmablepower.com

About AMETEK

AMETEK Programmable Power, Inc., a unit of AMETEK Electronic Instruments Group (a division of AMETEK, Inc.), is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial segments. Offering bench-top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California Instruments, Power Ten, and Amrel brand power supplies and electronic loads.

AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with annualized sales of $3.6 billion. The company has over 14,000 colleagues working at more than 120 manufacturing facilities and more than 80 sales and service centers in the United States and around the world.

Trademarks

AMETEK is a registered trademark of AMETEK, Inc. Other trademarks, registered trademarks, and product names are the property of their respective

owners and are used herein for identification purposes only.

Notice of Copyright

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC. (“AMETEK”)

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES, WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK, AND

(c) REMINDS YOU THAT IF THIS MANUAL IS IN ANY LANGUAGE OTHER THAN ENGLISH, ALTHOUGH STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION, WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.

Date and Revision

March 2015, Rev AA

Part Number

M550221-01

Contact Information

Telephone: 800 733 5427 (toll free in North America) 858 450 0085 (direct) Fax: 858 458 0267 Email: sales.ppd@ametek.com service.ppd@ametek.com

Web: www.programmablepower.com

M550221-01 Rev AA iii

Product Family: SGI Series DC Power Supplies Warranty Period: Five Years Warranty Terms

AMETEK Programmable Power, Inc. (“AMETEK”) provides this written warranty covering the

Product stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or workmanship within the applicable warranty period stated above, then AMETEK may, at its option: repair or replace the Product; or issue a credit note for the defective Product; or provide the Buyer with replacement parts for the Product.

The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance with the return procedure specified below. AMETEK will, at its expense, deliver the repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the Purchase Order Agreement or where the Product or any part thereof:

 is damaged by misuse, accident, negligence or failure to maintain the same as

specified or required by AMETEK;

 is damaged by modifications, alterations or attachments thereto which are not

authorized by AMETEK;

 is installed or operated contrary to the instructions of AMETEK;  is opened, modified or disassembled in any way without AMETEK’s consent; or  is used in combination with items, articles or materials not authorized by AMETEK.

The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.

Product Return Procedure

1. Request a Return Material Authorization (RMA) number from the repair facility (must be done in the country in which it was purchased):

 In the USA, contact the AMETEK Repair Department prior to the return of the product

to AMETEK for repair:

 Telephone: 800-733-5427, ext. 2295 or ext. 2463 (toll free North America)

858-450-0085, ext. 2295 or ext. 2463 (direct)

 Outside the USA, contact the nearest Authorized Service Center (ASC). A full listing

can be found either through your local distributor or our website, www.programmablepower.com, by clicking Support and going to the Service Centers tab.

2. When requesting an RMA, have the following information ready:

 Model number  Serial number  Description of the problem

Note:

Unauthorized returns will not be accepted and will be returned at the shipper’s expense.

Note:

A returned product found upon inspection by AMETEK, to be in specification is subject to

an evaluation fee and applicable freight charges.

M550221-01 Rev AA iv

WARNING!

Hazardous voltages might be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment. Circuitry, test points, and output voltages might be floating with respect to chassis ground. Do not touch electrical circuits, and use appropriately rated test equipment. A safety ground wire must be connected from the chassis to the AC mains input when servicing this equipment.

WARNING!

This equipment contains ESD sensitive input/output connection ports. When installing equipment, follow ESD safety procedures. Electrostatic discharges might cause damage to the equipment.

IMPORTANT SAFETY INSTRUCTIONS

Before applying power to the system, verify that your product is configured properly for your particular application.

Only qualified personnel, who understand and deal with attendant hazards in power supplies, are allowed to perform installation and servicing.

Ensure that the AC mains input ground is connected properly to the chassis safety ground connection. Similarly, other power ground lines, including those to application and maintenance equipment, must be grounded properly for both personnel and equipment safety. Always ensure that facility AC mains input is de-energized prior to connecting or disconnecting any cable.

In normal operation from the front panel, the operator does not have access to hazardous voltages within the chassis. However, depending on the application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY might be normally generated on the output terminals. The user must ensure that the output power lines are labeled properly as to the safety hazards and that any possibility for inadvertent contact with hazardous voltages is eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open cover checks to avoid personal injury by any sudden component failure.

Neither AMETEK Programmable Power Inc., San Diego, California, USA, oor any of the subsidiary sales organizations, can accept any responsibility for personnel, material or inconsequential injury, loss or damage that results from improper use of the equipment and accessories.

M550221-01 Rev AA v

SAFETY SYMBOLS

WARNING: Electrical Shock Hazard

HAZARD: Strong oxidizer

GENERAL WARNING/CAUTION: Read the accompanying message for

specific information.

BURN HAZARD: Hot Surface Warning. Allow to cool before servicing.

DO NOT TOUCH: Touching some parts of the instrument without

protection or proper tools could result in damage to the part(s) and/or the instrument.

TECHNICIAN SYMBOL: All operations marked with this symbol are to be performed by qualified maintenance personnel only.

ELECTRICAL GROUND: This symbol inside the instrument marks the central safety grounding point for the instrument.

M550221-01 Rev AA vi

FCC NOTICE

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

M550221-01 Rev AA vii

ABOUT THIS MANUAL AND REGULATORY COMPLIANCE

This manual has been written for the Sorensen SGI Series of power supplies, which have been designed and certified to meet the Low Voltage and Electromagnetic Compatibility Directive Requirements of the European Community.

These models have been designed and tested to meet the Electromagnetic Compatibility directive (European Council directive 2004/108/EC; generally referred to as the EMC directive) and to the requirements of the Low Voltage directive (European Council directive 2006/95/EC, 93/68/EEC, dated 22 July 1993). In addition these models have been found compliant with FCC 47 CFR Part 15, Subpart B107(e) Class A, 109(g) Class A.

Since the Low Voltage Directive is to ensure the safety of the equipment operator, universal graphic symbols have been used both on the unit itself and in this manual to warn the operator of potentially hazardous situations (see Safety Instruction page).

viii M550221-01 Rev AA

CONTENTS

SECTION 1 OVERVIEW .......................................... 1-1

1.1 General Description ..................................................................................... 1-1

1.2 Specifications ............................................................................................... 1-3

1.2.1 Environmental Characteristics ........................................................................ 1-3

1.2.2 Electrical Characteristics ................................................................................ 1-3

1.2.3 SGI Series Voltage and Current Specifications .............................................. 1-7

1.2.4 Physical Characteristics ................................................................................. 1-8

SECTION 2 INSTALLATION ................................... 2-1

2.1 Inspection ..................................................................................................... 2-1

2.2 Contents of Shipment .................................................................................. 2-1

2.3 Location and Mounting ................................................................................ 2-2

2.3.1 Rack Mounting ................................................................................................ 2-3

2.3.2 K550212-01 ASSEMBLY STEPS (OPTION KIT) ........................................... 2-4

2.3.3 K550213-01 ASSEMBLY STEPS (OPTION KIT) ........................................... 2-6

2.3.4 Chassis Removal from Rack .......................................................................... 2-7

2.4 Input/Output Connections ........................................................................... 2-8

2.5 Wire Selection ............................................................................................ 2-11

2.5.1 Wire Size ......................................................................................................2-11

2.6 LOAD CONSIDERATIONS .......................................................................... 2-14

2.6.1 Inductive and Stored-Energy Loads .............................................................2-14

2.7 Outline Drawings ........................................................................................ 2-15

SECTION 3 OPERATION ......................................... 3-1

3.1 Introduction .................................................................................................. 3-1

3.1.1 Front/Rear Panels........................................................................................... 3-1

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Contents Sorensen SGI Series

3.2 Basic Operation and Output Verification .................................................... 3-9

3.2.1 Initial Setup ..................................................................................................... 3-9

3.2.2 Default Programming Menu ............................................................................ 3-9

3.2.3 Constant-Voltage Mode Operation ...............................................................3-10

3.2.4 Constant-Current Mode Operation ...............................................................3-11

3.2.5 Overvoltage Protection .................................................................................3-12

3.3 Initial Start-Up Displays ............................................................................. 3-13

3.4 Display Elements ........................................................................................ 3-14

3.5 Navigation ................................................................................................... 3-15

3.6 Editing ......................................................................................................... 3-16

3.6.1 Aborting an Edit ............................................................................................3-17

3.7 Menu Map.................................................................................................... 3-18

3.7.1 Home Menu ..................................................................................................3-18

3.7.2 Default Programming Menu ..........................................................................3-18

3.7.3 Navigating from Home Menu Page 1 ...........................................................3-18

3.7.4 Navigating from Home Menu Page 2 ...........................................................3-19

3.7.5 Navigating from Home Menu Page 3 ...........................................................3-19

3.7.6 Sequence Menu............................................................................................3-20

3.7.7 Sequence Programming Operation ..............................................................3-20

3.7.8 Constant-Power Setup Menu .......................................................................3-21

3.7.9 Remote Menu ...............................................................................................3-21

3.7.10 Remote Control Screen Examples ...............................................................3-22

3.7.11 Warning Screens ..........................................................................................3-22

3.7.12 Other Screens ...............................................................................................3-22

3.8 Programming/Operating Functions .......................................................... 3-22

3.8.1 Voltage, Current, and Overvoltage Protection Programming .......................3-22

3.8.2 Save ..............................................................................................................3-23

3.8.3 Recall ............................................................................................................3-24

3.8.4 Sequencing ...................................................................................................3-25

3.8.5 Constant-Power Mode ..................................................................................3-34

3.8.6 Home Timeout ..............................................................................................3-35

3.8.7 Display Brightness ........................................................................................3-35

3.8.8 Lock Key .......................................................................................................3-35

3.8.9 Language ......................................................................................................3-35

3.8.10 Info ................................................................................................................3-36

3.8.11 Remote .........................................................................................................3-36

3.8.12 System ..........................................................................................................3-39

3.8.13 Warning Screens ..........................................................................................3-40

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Sorensen SGI Series Contents

3.9 Remote Analog Control Connector (J1).................................................... 3-40

3.10 Remote Current Programming .................................................................. 3-45

3.10.1 Remote Current Programming by Resistance ..............................................3-45

3.10.2 Remote Current Programming by Voltage Source .......................................3-46

3.11 Remote Voltage Programming .................................................................. 3-47

3.11.1 Remote Voltage Programming by Resistance .............................................3-47

3.11.2 Remote Voltage Programming by Voltage Source .......................................3-48

3.12 Remote Overvoltage Programming ........................................................... 3-49

3.13 Remote Output On/Off Control .................................................................. 3-50

3.13.1 Remote Output ON/OFF by Contact Closure ...............................................3-50

3.13.2 Remote Output ON/OFF Control by External Source ..................................3-50

3.13.3 Remote Shutdown(S/D) ................................................................................3-51

3.14 Remote Sensing ......................................................................................... 3-52

3.15 Floating and Polarized Output ................................................................... 3-55

3.16 Parallel and Series Operation .................................................................... 3-56

3.16.1 Parallel Operation .........................................................................................3-56

3.16.2 Series Operation ...........................................................................................3-58

SECTION 4 CALIBRATION AND VERIFICATION.. 4-60

4.1 Introduction ................................................................................................ 4-60

4.1.1 Calibration and Verification Cycle .................................................................4-60

4.1.2 Preparation ...................................................................................................4-60

4.2 Calibration and Verification Procedures................................................... 4-61

4.2.1 Constant-Current Mode ................................................................................4-62

4.2.2 Constant-Voltage Mode ................................................................................4-62

4.2.3 Resistive-Control Programming Current Sources ........................................4-63

4.2.4 Change Calibration Date ..............................................................................4-64

4.3 Remote Isolated Analog Interface (Option) Calibration and Verification

Procedures ........................................................................................................... 4-64

4.3.1 Constant-Current Mode ................................................................................4-64

4.3.2 Constant-Voltage Mode ................................................................................4-65

4.3.3 Change Calibration Date ..............................................................................4-66

SECTION 5 MAINTENANCE ................................... 5-1

5.1 Introduction .................................................................................................. 5-1

5.2 Preventive Maintenance ............................................................................... 5-1

5.3 Fuses ............................................................................................................. 5-3

M550221-01 Rev AA xi

Contents Sorensen SGI Series

LIST OF TABLES

Table 2–1. Maximum AC Current Ratings, PFC Models ............................................. 2-9

Table 2–2. Maximum AC Current Ratings, Non-PFC Models ....................................... 2-9

Table 2–3. Input/Output Connectors ........................................................................... 2-9

Table 2–4. Input Terminal Connections ..................................................................... 2-10

Table 2–5. Output Terminal Connections .................................................................. 2-10

Table 2–6. Recommended Lugs ............................................................................... 2-10

Table 2–7. Recommended Sense Connector Tools .................................................. 2-10

Table 2–8. Minimum Wire Size ................................................................................. 2-11

Table 2–9. Wire Resistance and Voltage Drop, 20°C ................................................ 2-13

Table 3–1. Front Panel Controls and Indicators .......................................................... 3-2

Table 3–2. Rear Panel Connectors and Controls, Standard ........................................ 3-6

Table 3–3. Rear Panel Connectors and Controls, GPIB Option .................................. 3-7

Table 3–4. Rear Panel Connectors and Controls, Ethernet Option ............................. 3-8

Table 3–5. Analog Control Connector (J1), Designations and Functions ................... 3-44

Table 5–1. Fuse Ratings ............................................................................................. 5-3

xii M550221-01 Rev AA

Sorensen SGI Series Contents

LIST OF FIGURES

Figure 1-1. Model Number Decoding .......................................................................... 1-2

Figure 2-1. Rack Mount Assembly for 3U Models ........................................................ 2-4

Figure 2-2. Rack Mount Assembly for 6U Models ................................ ....................... 2-6

Figure 2-3. Diode Connection ................................................................................... 2-14

Figure 2-4. Installation Drawing, 3U Models 10V-30V ............................................... 2-16

Figure 2-5. Installation Drawing, 3U Models 40V-600V ................................ ............ 2-17

Figure 2-6. Installation Drawing, 3U Models 800V and 1000V ................................. 2-18

Figure 2-7. Installation Drawing, 6U Models 20kW-30kW ......................................... 2-19

Figure 2-8. Rear Panel, Standard, 3U Models 10V-30V ............................................ 2-20

Figure 2-9. Rear Panel, GPIB Option, 3U Models 10V-30V ...................................... 2-21

Figure 2-10. Rear Panel, Ethernet Option, 3U Models 10V-30V................................ 2-22

Figure 2-11. Rear Panel, Standard, 3U Models 40V-600V ........................................ 2-23

Figure 2-12. Rear Panel, GPIB Option, 3U Models 40V-600V .................................. 2-24

Figure 2-13. Rear Panel, Ethernet Option, 3U Models 800V and 1000V ................... 2-25

Figure 2-14. Rear Panel, Standard, 6U Models 20kW-30 kW ................................... 2-26

Figure 2-15. Rear Panel, GPIB Option, 6U Models 20kW-30 kW .............................. 2-27

Figure 2-16. Rear Panel, Ethernet Option, 6U Models 20kW-30 kW ......................... 2-28

Figure 2-17. Instructions for Assembly of AC and DC Covers ................................... 2-29

Figure 3-1. Front Panel Controls and Indicators (3U Model Shown) ............................ 3-1

Figure 3-2. Rear Panel Interface, Standard, 3U Models 10V-30V ............................... 3-3

Figure 3-3. Rear Panel Interface, GPIB Option, 3U Models 10V-30V .......................... 3-3

Figure 3-4. Rear Panel Interface, Ethernet Option, 3U Models 10V-30V ..................... 3-3

Figure 3-5. Rear Panel Interface, Standard, 3U Models 40V-600V ............................. 3-4

Figure 3-6. Rear Panel Interface, GPIB Option, 3U Models 40V-600V ........................ 3-4

Figure 3-7. Rear Panel Interface, Ethernet Option, 3U Models 800V and 1000V ........ 3-4

Figure 3-8. Rear Panel Interface, Standard, 6U Models 20kW-30kW .......................... 3-5

Figure 3-9. Rear Panel Interface, GPIB Option, 6U Models 20kW-30kW .................... 3-5

Figure 3-10. Rear Panel Interface, Ethernet Option, 6U Models 20kW-30kW ............. 3-5

Figure 3-11. Burn-in Sequence Example .................................................................. 3-31

Figure 3-12. Constant-Power Example ..................................................................... 3-34

Figure 3-13. Analog Control Connector (J1) Pin-Out ................................................. 3-41

Figure 3-14. Remote Current Programming Using Resistance .................................. 3-45

Figure 3-15. Remote Current Programming Using 0-5 VDC or 0-10 VDC Source ..... 3-46

Figure 3-16. Remote Voltage Programming Using Resistance ................................. 3-47

Figure 3-17. Remote Voltage Programming Using 0-5 VDC or 0-10 VDC Source ..... 3-48

Figure 3-18. Remote Overvoltage Programming Using DC Voltage Source .............. 3-49

Figure 3-19. Remote Output On/Off Control by Contact Closure ............................... 3-50

Figure 3-20. Remote Output On/Off Using Isolated AC or DC Source ...................... 3-50

Figure 3-21. Remote Output On/Off Using Isolated TTL/CMOS Source .................... 3-51

Figure 3-22. Remote Shutdown Using DC Voltage Source ....................................... 3-51

M550221-01 Rev AA xiii

Contents Sorensen SGI Series

Figure 3-23. Remote Voltage Sensing Network ......................................................... 3-52

Figure 3-24. Remote Sense Connection at the Load, 10V-800V Models ................... 3-53

Figure 3-25. Remote Sense Connection at the Load, 1000V Model .......................... 3-54

Figure 3-26. Parallel Connection and Remote Sense ................................................ 3-57

Figure 3-27. Series Connection with Anti-Parallel Diodes ................................ ......... 3-59

Figure 4-1. Potentiometer Locations ......................................................................... 4-67

xiv M550221-01 Rev AA

1.1 General Description

The Sorensen SGI Series are general purpose power supplies designed specifically for laboratory test and systems applications requiring programmable DC sources with good performance characteristics, such as accuracy, regulation, and ripple/noise. These power supplies are constantcurrent/constant-voltage supplies with an automatic crossover feature.

SECTION 1

OVERVIEW

A variety of user interfaces are available, ranging from manual front panel control and standard non–isolated remote analog control, to optional GPIB or isolated remote analog control.

Refer to Figure 1-1 for decoding of the SG Series model number.

M550221-01 Rev AA 1-1

Overview Sorensen SGI Series

Option

Description

Control Options

A: Analog I: Intelligent

Input Options

C: Input Voltage 208/230 VAC, 3-Phase D: Input Voltage 380/400 VAC, 3-Phase E: Input Voltage 440/480 VAC, 3-Phase

Remote Control Options

0A: No Option 1A: IEEE-488.2 + RS-232C 1C: Ethernet + RS-232C 1D: Isolated Analog Interface 1E: Shaft Locks 2A: Combined Options 1A + 1D 2C: Combined Options 1A + 1E (SGA Only) 2G: Combined Options 1C + 1D 2H: Combined Options 1C + 1E (SGA Only) 2J: Combined Options 1D + 1E (SGA Only) 3C: Combined Options 1A + 1D + 1E (SGA Only) 3G: Combined Options 1C + 1D + 1E (SGA Only)

Process Options

AA: No option AB: Certificate of Calibration (includes test data)

Modifications

AJ: Front panel dust filter (3U models only) CV: 400Hz AC input at 208 VAC for 6U units only; does not

carry CE, CSA or UL certification; (standard in 3U models) PF: Passive power factor correction to 0.9 for 40V to 800V

models; (standard in 10V-30V, 50V, and 1000V models)

SG I 100 X 100 C - 1A AA AJ

Control Designation

A = Analog I = Intelligent

Voltage

4-15 kW = "X" 20-30 kW = "/"

Current

Modifications

Process Options

Remote Control Options

Input Voltage Options

For units up to 999 V/999 A, voltage and current are represented in numeric format, e.g., “100”

represents 100 V. For units at 1000 V/1000 A and above, the voltage and current are represented by the format “xKx”, e.g., “1K0” represents 1000 V.

Figure 1-1. Model Number Decoding

1-2 M550221-01 Rev AA

Sorensen SGI Series Overview

Parameter

Specification

Ambient Temperature

Operating

0 to 50C

Storage

-25 to 65C

Cooling

Forced convection with internal, linearly-variable-speed fans; vents on front, sides and rear; units may be stacked without clearance above or below.

Humidity

95% maximum, non-condensing, 0 to 50C; 45C maximum wet-bulb temperature.

Altitude

5,000 ft (1,524 m) operating at full rated output power, derate 10% of full power for every 1,000 ft (3,048 m) higher; non-operating to 40,000 ft (12,192m)

Agency Approvals

CE Compliant: Certified to UL/CSA 61010 and IEC/EN 61010-1 by a NRTL; LVD Categories: Installation Category II, Pollution Degree 2, Class II Equipment, for Indoor Use Only;

EMC Directive, EN 61326:1998; Semi-F47 Compliant

Parameter

Specification

Input Power

Voltage

208/230 VAC ±10%, allowed range 187-253 VAC; 380/400 VAC ±10%, allowed range 342-440 VAC;

440/480 VAC ±10%, allowed range 396-528 VAC

Frequency

47 Hz to 63 Hz; 400 Hz at 208 VAC for 3U models; 400 Hz at

208 VAC for 6U models is an optional modification (“CV” in

model number) and does not carry CE, UL or CSA markings

Configuration

3–phase, 3–wire plus ground; not phase rotation sensitive; neutral not used.

1.2 Specifications

The following subsections provide environmental, electrical, and physical characteristics for the SGI Series power supplies.

Note:

Specifications are subject to change without notice. The SGI Series power supplies are intended for indoor use only. Refer

to Section 2.3 for use/location requirements.

1.2.1 Environmental Characteristics

1.2.2 Electrical Characteristics

Note:

where the remote sense leads are connected.

M550221-01 Rev AA 1-3

Output voltage accuracy, regulation, and stability specifications are valid at the point

Overview Sorensen SGI Series

Parameter

Specification

Power Factor (at full rated load; 50/60Hz); contact factory for power factor of specific models

PFC models: 10V-30V, 50V, 1000V, and models with optional modification, “PF”

0.90, typical, for all AC input ratings; with passive power factor correction (PFC)

Non-PFC models: 40V-800V

0.75, typical, for 208/230 VAC input;

0.72, typical, for 380/400 VAC input;

0.69, typical, for 440/480 VAC input; power factor is not solely determined by power supply input

characteristics, but is dependent on the level of DC output power and interaction with the source impedance of AC mains.

Efficiency

87%, typical, at full load, nominal AC line

Hold-Up Time

1/2 cycle, typical, for loss of all three phases (6.4 ms, typical for 800V/1000V models); 3 cycle, typical, for loss of one phase; sustained missing phase will result in shutdown of the output.

Rated Output Power

4-15 kW for 3U chassis for10V-30V models; 5-15 kW for 3U chassis for 40V-1000V models; 20-30 kW for 6U chassis for 60V-600V models;

maximum output power is the product of the rated output voltage and current; for specific values refer to Section 1.2.3.

Load Regulation (specified for ±100% rated load change, at nominal AC input voltage)

Voltage

±0.05%, maximum, of rated output voltage for 10V- 30V models; ±0.02%, maximum, of rated output voltage for 40V-1000V

models

Current

±0.1%, maximum, of rated output current

Line Regulation (specified for ±10% change of nominal AC line voltage, at constant load)

Voltage

±0.05%, maximum, of rated output voltage for 10V-30V models; ±0.01%, maximum, of rated output voltage for 40V-1000V

models

Current

±0.05%, maximum, of rated output current

Temperature Coefficient

Voltage

±0.02%/C, typical, of rated output voltage

Current

±0.03%/C, typical, of rated output current

Stability

±0.05%, typical, of rated output voltage or current, over 8 hrs at fixed line, load, and temperature, after 30 min warm-up

Output Voltage Ripple/Noise

Refer to Ripple/Noise specifications in tables of Section 1.2.3.

Load Transient Response

1 ms, typical, to recover within 0.75% of rated output voltage for load step change of 50% of rated output current

Output Voltage Rise Time

(with rated load, resistive; current rise time same)

10 ms, maximum, from 10-90% of programming change from zero to rated output voltage for 10V-30V models;

100 ms, maximum, from 5-95% of programming change from zero to rated output voltage for 40V-1000V models;

contact factory for values of specific models

1-4 M550221-01 Rev AA

Sorensen SGI Series Overview

Parameter

Specification

Output Voltage Fall Time

(with rated load, resistive; current fall time same)

10 ms, maximum, from 90-10% of programming change from rated output voltage to zero for 10V-30V models;

contact factory for values of specific models

Output Voltage Fall Time

(with no load)

50 ms, maximum, from 90-10% of programming change from rated output voltage to zero for 10V-30V models;

1.5 s, typical, from 100% to 10% of programming change from rated output voltage to zero for 40V-1000V models;

contact factory for values of specific models

Front Panel Meter

Display Resolution

4 digit

Voltage Accuracy

(to actual output)

±(0.15% of rated output voltage + 0.1% of actual output + 1 digit) for 10V-30V models;

±(0.1%, maximum, of rated output voltage + 1 digit) for 40V-1000V models

Current Accuracy

(to actual output)

±(0.4%, maximum, of rated output voltage + 1 digit)

Front Panel Programming

Voltage

±(0.1% of rated output voltage + 0.1% of actual output voltage) for 10V-30V models;

±0.1%, maximum, of rated output voltage for 40V-1000V models

Current

±(0.4% of rated output current + 0.1% of actual output current) for 10V-30V models;

±0.4%, maximum, of rated output current for 40V-1000V models

Overvoltage Protection (OVP)

±1%, maximum, of rated output voltage

Remote Sensing

Connection

Voltage accuracy/regulation specifications apply at the point where the remote sense leads are connected.

Line Drop

1 V, maximum per line for 10V-20V models;

1.5 V, maximum per line for 30V model; 5%, maximum of rated output voltage per line for models, 40V to

less than 160V; 2%, maximum of rated output voltage per line for models greater

than or equal to 160V; greater level of line drop is allowed, but output voltage regulation

specifications no longer apply.

Line Drop Effect on Output Voltage

Rated output voltage applies at the rear panel output terminals, and line drop voltage subtracts from the voltage available at the load terminals

Remote Analog Interface

Programming Accuracy

Voltage

±0.25%, maximum, of rated output voltage for 0-5 VDC range, and ±0.5%, maximum, for 0-10 VDC range

Current

±1.0%, maximum, of rated output current for 0-5 VDC range, and ±1.2%, maximum, for 0-10 VDC range for 10V-30V models;

M550221-01 Rev AA 1-5

Overview Sorensen SGI Series

Parameter

Specification

±0.8%, maximum, of rated output current for 0-5 VDC range, and ±1.0%, maximum, for 0-10 VDC range for 40V-1000V models

Overvoltage Protection (OVP)

±1%, maximum, of rated output voltage

Readback Monitor Accuracy

Voltage (of actual output value)

±0.5%, maximum, of rated output voltage

Current (of actual output value)

±1%, maximum, of rated output current

Resistive-Control Programming

Voltage

0–5 k for 0-100% of rated output voltage

Current

0–5 k for 0-100% of rated output current

Voltage-Control Programming

Voltage

0–5 VDC or 0–10 VDC for 0-100% of rated output voltage

Current

0–5 VDC or 0–10 VDC for 0-100% of rated output current

Overvoltage Protection (OVP)

0.25–5.5 VDC for 5-110% or rated output voltage

Remote Control/Monitor Interface

On/Off control via contact closure, 6-120 VDC or 12-240 VAC, and TTL or CMOS gate; output voltage and current monitors; output voltage, current, and OVP programming; summary fault status

Output Isolation

Output Float Voltage

Negative Output Terminal

±300 V(PK), maximum, with respect to chassis ground; exceeding the limit will be detected as a fault by a protective supervisory monitor and shutdown of the output will be executed; this condition will be latched, requiring reset to resume normal operation.

Isolation of optional Isolated Analog Interface (J1) to output negative terminal

1000 V(PK), maximum; Isolated Analog Interface (J1 signals) are galvanically isolated from negative output terminal; operation of Isolated Analog Interface signals should be at SELV safety voltage conditions to chassis ground.

Reference of standard NonIsolated Analog Interface (J1) to output negative terminal

The standard Non-Isolated Analog Interface (J1 signals) is connected to the negative output terminal and, therefore, is not isolated from the output.

Parallel Operation

Parallel Group

Up to 5 units, of the same voltage rating, may be connected in parallel for additional output current; specifications apply as for single unit, with the exception that each additional paralleled unit will add 0.3% to the output current accuracy. Contact factory for applications requiring paralleling more than five units.

Series Operation

Series Group

Up to 2 units, of the same current rating, may be connected in series for additional output voltage; see restrictions in Output Isolation section.

1-6 M550221-01 Rev AA

Sorensen SGI Series Overview

Rated

Voltage,

VDC

Rated Current, ADC

Ripple/

Noise**

RMS,

Ripple/ Noise*

PK–PK,

4 kW

5 kW

8 kW

10 kW

12 kW

15 kW

0-10††

0-400

N/A

0-800

N/A

0-1200

N/A

0-15††

0-267

N/A

0-534

N/A

0-801

N/A

0-20††

N/A

0-250

N/A

0-500

N/A

0-750

0-30††

N/A

0-167

N/A

0-334

N/A

0-501

Rated

Voltage,

VDC

Rated Current, ADC

Ripple/

Noise**

RMS,

Ripple/ Noise*

PK–PK,

5 kW

10 kW

15 kW

20 kW

25 kW

30 kW

0-40

0-125

0-250

0-375

0-500†

0-625†

0-750†

0-50

0-100

0-200

0-300

0-400†

0-500†

0-600†

0-60

0-83

0-167

0-250

0-333

0-417

0-500

0-80

0-63

0-125

0-188

0-250

0-313

0-375

100

0-100

0-50

0-100

0-150

0-200

0-250

0-300

100

0-160

0-31

0-63

0-94

0-125

0-156

0-188

150

0-200

0-25

0-50

0-75

0-100

0-125

0-150

175

0-250

0-20

0-40

0-60

0-80

0-100

0-120

200

0-300

0-17

0-33

0-50

0-67

0-83

0-100

200

0-330

0-15

0-30

0-45

0-61

0-76

0-91

200

0-400

0-12

0-25

0-38

0-50

0-63A

0-75

300

0-500

0-10

0-20

0-30

0-40

0-50

0-60

350

0-600

0-8

0-17

0-25

0-33

0-42

0-50

350

0-800

0-6.2

0-12.5

0-18.7

0-25†

0-31.2†

0-37.5†

500

0-1000

0-5

0-10

0-15

0-20†

0-25†

0-30†

100

650

1.2.3 SGI Series Voltage and Current Specifications

The following tables present the specifications for rated voltage and current, and ripple/noise for the 10V-1000V models.

* PK-PK ripple/noise, over 20 Hz to 20 MHz bandwidth, is measured across a 1 µF capacitor at

the end of a 6’ load cable with the supply operating at full load and nominal AC line voltage.

** RMS ripple/noise, over 20 Hz to 300 kHz bandwidth, is measured directly across the output

terminals with the supply operating at full load and nominal AC input line voltage.

†

Power level not available in 6U models, but could be produced with paralleled 3U units; up to 75 kW could be produced by paralleling up to five units. Paralleling will increase ripple/noise.

††

Models from 10V-30V are not available in 6U chassis.

M550221-01 Rev AA 1-7

Overview Sorensen SGI Series

Dimensions

3U Models,

10V-30V

3U Models,

40V-1000V

6U Models,

60V-600V

Width

19.00 in (48.26 cm)

Depth

From inner surface of front panel to maximum protrusion of protective covers at rear panel; refer to installation drawings for chassis dimensions.

28.09 in (71.35 cm)

25.46 in (64.67 cm)

27.18 in (69.04 cm)

Height

5.25 in (13.34 cm)

10.5 in (26.67 cm)

Weight (nominal)

≤ 65 lb (29 kg), (4 kW, 10V, 15V) ≤ 65 lb (29 kg), (5 kW, 20V, 30V)

≤ 85 lb (39 kg), (8 kW, 10V, 15V)

≤ 85 lb (39 kg), (10 kW, 20V, 30V) ≤ 110 lb (50 kg), (12 kW, 10V, 15V)

≤ 110 lb (50 kg), (15 kW, 20V, 30V)

≤ 60 lb (27 kg), (5 kW) ≤ 75 lb (34 kg), (10 kW) ≤ 90 lb (41 kg), (15 kW)

≤ 140 lb (63 kg), (20 KW) ≤ 155 lb (70 kg), (25 kW) ≤ 170 lb (77 kg), (30 kW)

Shipping Weight

Contact factory for weights of specific models

1.2.4 Physical Characteristics

1-8 M550221-01 Rev AA

2.1 Inspection

Inspect the shipping carton for possible damage before unpacking the unit. Carefully unpack the equipment. Save all packing materials until inspection is complete. Verify that all items listed on the packing slips have been received. Visually inspect all exterior surfaces for broken knobs, connectors, or meters. Inspect for dented or damaged exterior surfaces. External damage may be an indication of internal damage. If any damage is evident, immediately contact the carrier that delivered the unit and submit a damage report. Failure to do so could invalidate future claims. Direct repair issues to Customer Service at 858458-0223 (local) or 1-800-733-5427 (toll free in North America).

SECTION 2

INSTALLATION

2.2 Contents of Shipment

Depending on the model, configuration, and options available for your SGI Series power supply, the ship kit may include additional parts and accessories.

Minimum items included in the ship kit:

 AMETEK manuals CD-ROM (P/N M550008-01) containing the SGI Series

DC Power Supplies Operation Manual (this manual, P/N M550221-01), and the SG manual for the digital interface options, IEEE 488.2/RS232 and Ethernet Programming Manual (P/N M550129-03).

1. Sense mating connector:

10V-800V models, (Molex P/N 39-01-4031) with loose contacts (Molex P/N 3900-0182)

1000V model, (Molex P/N 39-01-4041) with loose contacts (Molex P/N 39-01-

0182)

2. J1 mating connector (Cinch P/N DB25P or equivalent) normally shipped attached

to rear panel J1

3. Backshell for J1 (DB25) mating connector (Cinch P/N DCH-B-001 or equivalent)

M550221-01 Rev AA 2-1

Installation Sorensen SGI Series

WARNING!

This unit is intended for installation in a protected environment. Exposure to conductive contaminants or corrosive compounds/gases that could be ingested into the chassis could result in internal damage. To reduce the risk of fire or electrical shock, install the SGI Series unit in a temperature and humidity controlled indoor area.

CAUTION!

The unit should be provided with proper ventilation. The rear and both sides of the unit should be free of obstructions. To ensure proper airflow, a minimum 4" clearance from the rear air outlet is required. The unit should not be installed in an ambient temperature greater than 50°C.

CAUTION!

No user serviceable parts inside; service to be performed by qualified personnel only.

4. Hardware for input/output terminal power connections:

3U, 4-15 kW, 10V-30V models: 1/2-13UNC-2B x 1.25" long, 4 ea, with nut, washer, and lockwasher;

3U, 5-15 kW, 40V-600V models: 3/8-16UNC-2B x 1.0”, 2 ea, with nut, washer, and lockwasher;

3U, 5-15 kW, 800V and 1000V models have studs, 1/4-20UNC-2B, 2 ea, with nut, washer, and lockwasher installed on rear panel;

6U, 20-30 kW: 3/8-16UNC-2B x 0.875", 2 ea, with nut and lockwasher, for DC output; 1/4-20UNC-2B, 4 ea, with Keps nut for AC input.

5. Front panel rack fastener, black screw:

3U, 10V -1000V models: 10-32UNC-2B x 0.5”, 4 ea; 6U, 20-30 kW: 10-32UNC-2B x 0.5”, 8 ea.

Note:

0223 (local) or 1-800-733-5427 (toll free).

Optional accessories: 890-453-03: Paralleling Cable (for up to 5 units, requires one cable per unit

placed in parallel) K550212-01: 3U Rack Slides (for 4 kW to 15 kW models) K550213-01: 6U Rack Slides (for 20 kW to 30 kW models) 5550568-01: Front panel dust filter - field installation kit - 3U models only 5551082-01: Optional AC input cover kit - 3U models only

If any of these parts are missing, contact Customer Service at 858458-

2.3 Location and Mounting

Refer to Sections 2.7 for dimensional and installation drawings.

2-2 M550221-01 Rev AA

Sorensen SGI Series Installation

2.3.1 Rack Mounting

The SGI Series models are designed for mounting in a standard 19-inch equipment rack compliant to EIA-310. If additional instrumentation is mounted in the rack, no additional clearance is required above or below the SGA Series units.

Support the SGI Series unit using appropriate L-brackets or rack mount slides; suggested slides kits are listed as follows:

Rack Mount Slide Kit (Option):

3U models, 4–15 kW: AMETEK part number K550212-01 6U models, 20–30 kW: AMETEK part number K550213-01

M550221-01 Rev AA 2-3

Installation Sorensen SGI Series

2.3.2 K550212-01 ASSEMBLY STEPS (OPTION KIT)

Figure 2-1. Rack Mount Assembly for 3U Models

2-4 M550221-01 Rev AA

Sorensen SGI Series Installation

WARNING!

A minimum two-person lift is required for the 3U SGA Series power supply, which weighs up to 110 lb (50 kg) depending on the model.

Refer to Figure 2-1 for 3U rack mount assembly drawing for the following instructions:

1. Install the slide sections, 1C , on both sides of the power supply chassis with screws (three on left side and four on right side). Ensure that the latch spring orientation is as shown in Note 1 .

2. Install the brackets, 2A and 2B , to the stationary slide sections, 1A , with the hardware provided by the slide supplier as shown in Note 3 .

3. Ensure that stopper orientation of slide sections, 1B , is as shown in Note 2 . Adjust the location of the mounting brackets as required for the particular type of cabinet vertical rails utilized.

4. Mount the stationary slide sections, 1A , (with brackets already installed) into the cabinet using appropriate hardware (e.g. bar nuts, cage nuts, clip nuts), while ensuring that they are level front to back and left to right of the cabinet rails.

5. Insert power supply chassis with slide sections, 1C , into slide sections, 1B .

6. Secure the front panel of the power supply chassis to the cabinet rack rails using the screws provided in the ship kit.

M550221-01 Rev AA 2-5

Installation Sorensen SGI Series

2.3.3 K550213-01 ASSEMBLY STEPS (OPTION KIT)

Figure 2-2. Rack Mount Assembly for 6U Models

2-6 M550221-01 Rev AA

Sorensen SGI Series Installation

WARNING!

A minimum two-person lift is required for the 3U SGA Series power supply, which weighs up to 110 lb (50 kg) depending on the model.

A minimum three-person lift is required for the 6U SGA Series unit, which weighs up to 170 lb (77 kg) depending on the model.

WARNING!

A minimum three-person lift is required for the 6U SGA Series power supply, which weighs up to 170 lb (77 kg) depending on the model.

Refer to Figure 2-2 for 6U rack mount assembly drawing for the following instructions:

1. Install the slide sections, 1B , on both sides of the power supply chassis with screws (six on left side and seven on right side). Ensure that the section end orientation is as shown in Note 1 .

2. Install the brackets, 2A and 2B , to the stationary slide sections, 1A , with the hardware provided by the slide supplier as shown in Note 3 . Ensure that the stopper orientation is as shown in Note 2 . Adjust the location of the mounting brackets as required for the particular type of cabinet vertical rails utilized.

3. Mount the stationary slide sections, 1A , (with brackets already installed) into the cabinet using appropriate hardware (e.g. bar nuts, cage nuts, clip nuts), while ensuring that they are level front to back and left to right of the cabinet rails.

4. Insert power supply chassis with slide sections, 1B , into slide sections, 1A .

5. Secure the front panel of the power supply chassis to the cabinet rack rails using the screws provided in the ship kit.

2.3.4 Chassis Removal from Rack

The slides have a front disconnect feature and lock at full extension. To disconnect and remove the chassis from the rack, depress the flat steel spring (located on the slides) inward, and pull the chassis forward. To return the chassis back into the rack from full extension, depress the flat steel spring (located on the slides) inward, and push the chassis back.

When the chassis is at full extension, the flat springs are located behind the front rack rails. Retract the springs with a flat blade screwdriver or similar device to release from lock-out or to remove the chassis from the rack.

M550221-01 Rev AA 2-7

Installation Sorensen SGI Series

WARNING!

High voltage present at rear panel! Risk of electrical shock. Do not remove protective covers on AC input or DC output. Refer to qualified service personnel.

WARNING!

The input and output voltages at the rear panel of the unit might be HAZARDOUS LIVE. When rack-mounting or panel-mounting the unit, suitable safeguards must be taken by the installer to ensure that HAZARDOUS LIVE voltages are not OPERATOR accessible. OPERATOR access should only be to the front panel of the unit.

WARNING!

A safety disconnect device for the AC mains input must be installed so that it is readily accessible to the user

WARNING!

A properly sized input overcurrent protection device must be installed at the AC mains input, either a circuit breaker or fuse having a rating of 25% over the maximum AC input line currents listed in Table 2–1.

WARNING!

To prevent an electrical shock hazard, a safety ground wire must be connected from the safety ground stud on the rear panel to the AC mains ground.

CAUTION!

Under no condition should the negative output terminal exceed 300V to earth ground. Floating the negative output terminal subjects the internal control circuitry of the power supply to the same potential as present at the negative output terminal. In a unit with the standard Non-Isolated Analog Interface, the signals of control connector, J1, would float at the same potential as the negative output terminal. Damage might occur if the signals of the Non-Isolated Analog control connector are connected to an external ground referenced device, due to unintentional ground loop currents that this connection could generate. To correct ground loop problems, it is advised to use the optional Isolated Analog Interface in order to isolate the external signals from the internal control circuitry of the supply. Refer to Section 1.2.2 of the specifications for additional information.

2.4 Input/Output Connections

Refer to Table 2–1 for AC input current requirements and Section 1.2.3 for output current specifications. Table 2–3 provides information on the external input and output connections for the SGI Series models. Table 2–4 provides input connections descriptions and Table 2–5 provides output connection descriptions. Refer to Table 2–6 for input/output lug recommendations. The recommended tools for crimping and extraction of the sense connector pins are listed below in Table 2–7.

2-8 M550221-01 Rev AA

Sorensen SGI Series Installation

Model Ratings

Input Line Current, A (RMS)*

Voltage

Model

AC Input

Option

Code

Input

Voltage,

VAC

5 kW

10 kW

15 kW

20 kW

25 kW

30 kW

40V-1000V

208/230

118

380/400

65 E 440/480

4 kW

8 kW

12 kW

5 kW

10 kW

15 kW

10V-15V

208/230

N/A

N/A D 380/400

N/A

N/A E 440/480

N/A

20V-30V

208/230

N/A

380/400

N/A

32 E 440/480

N/A

N/A 9 19

* AC input current could vary as a result of actual power factor; refer to specifications section for power factor dependency

Model Ratings

Input Line Current, A(RMS)*

Voltage

Model

AC Input

Option

Code

Input

Voltage,

VAC

5 kW

10 kW

15 kW

20 kW

25 kW

30 kW

40V-800V

208/230

118

142

380/400

440/480

* AC input current varies depending on actual power factor; refer to specifications section on power factor

Connector

Function

Connection

L1 – AC, L2 – AC, L3 – AC, Chassis - GND

AC input power; see Table 2–4

AC mains 3-phase input

Pos. Bus Bar, Neg. Bus Bar

DC output power; see Table 2–5

User load

Analog Interface Connector (J1)

Control interface; see Table 3–5

User controller Remote Sense Connector

Remote voltage sensing; see Section 3.14

Output load

Parallel In/Out

Parallel operation; see Section 3.16

Master/Slave units

Table 2–1. Maximum AC Current Ratings, PFC Models

Table 2–2. Maximum AC Current Ratings, Non-PFC Models

Table 2–3. Input/Output Connectors

M550221-01 Rev AA 2-9

Installation Sorensen SGI Series

Power Supply Type

Connections

Connection Description

4 kW to 15 kW, 3U

AC Input

Feed-Through terminal block with compression terminals

20 kW to 30 kW, 6U

AC Input

Bus Bar with holes for 1/4"–20 bolts

All 3U and 6U

Chassis Safety Ground

1/4-20 stud

CAUTION!

To prevent damage to the AC input connector of the 3U units, follow torque specifications, and, if a wire ferrule is used, ensure that it is properly sized and that it has been crimped with the appropriate ferrule crimping tool.

Power Supply Type

Connection Description

4 kW to 15 kW, 10V-30V models

Bus bars with two holes for 1/2” bolts on each terminal

(POS. and NEG.)

5 kW to 15 kW, 40V-1000V models

40V-600V models: bus bars with single holes for 3/8" bolts on each terminal (POS. and NEG.) 800V and 1000V models: 1/4-20 studs for each terminal (POS. and NEG.)

20 kW to 30 kW

Bus bars with single holes for 3/8" bolts for each terminal (POS. and NEG.)

Manufacturer

Low Current

High Current

Panduit

P, PV, or PN series, or equivalent

Standard stranded wire: LCA Series, or equivalent Flexible stranded wire: LCAX Series, or equivalent

Note:

Contact lug manufacturer for recommended crimping tool.

Tool

Manufacturer

Manufacturer P/N

Crimping

Molex

11-01-0197

Extracting

Molex

11-03-0044

Table 2–4. Input Terminal Connections

AC Input Connector for 3U Models

 Recommended torque for the AC input connector screws: 17.7 in-lb to 20.4 in-

lb (2 Nm to 2.3 Nm).

 Wire ferrules are recommended, properly sized to match the wire gauge; use

appropriate crimp tool for the ferrule size.

 Wire insulation should be stripped to 5/8”, maximum.  For more information on the AC input connector, refer to the manufacturer

(Phoenix Contact) part number HDFKV 16 at their website, www.phoenixcontact.com.

Table 2–5. Output Terminal Connections

Table 2–6. Recommended Lugs

Table 2–7. Recommended Sense Connector Tools

2-10 M550221-01 Rev AA

Sorensen SGI Series Installation

CAUTION!

Cables with Class B or C stranding should be used. Fine-stranded (flexible) cables should not be used unless crimp-on lugs or ferrules are used that are approved for fine-stranded cables.

Size

Temperature Rating of Copper Conductor

AWG

60°C

75°C

85°C

90°C

Types: RUW,

T, TW, UF

Types: FEPW,

RHW, RH, RUH,

THW, THWN,

XHHW, USE, ZW

Types: V, MI

Types: TA, TBS,

SA, AVB, SIS, FEP,

FEPB, RHH, THHN,

XHHW

Current Rating, A(RMS)

40 8 40

55 6 55

75 4 70

95 3 85

100

110

110 2 95

115

125

130

110

130

145

150

125

150

165

170

145

175

190

195

000

165

200

215

225

0000

195

230

250

260

2.5 Wire Selection

Care must be taken to properly size all conductors for the input and output of the power supply. This section provides guidance in the selection of wire size.

2.5.1 Wire Size

The tables below will assist in determining the appropriate wire size for both the input and output connections. Table 2–8 gives minimum recommended wire size; these recommendations are for copper wire only. This table is derived from the National Electrical Code, and is for reference only. Local laws and conditions may have different requirements. For higher ratings, wires can be paralleled; refer to the National Electrical Code for guidelines.

Table 2–8. Minimum Wire Size

M550221-01 Rev AA 2-11

Installation Sorensen SGI Series

When determining the optimum cable specification for your power applications, the same engineering rules apply whether at the input or output of an electrical device. Thus, this guide applies equally to the AC input cable and DC output cable for this power supply and application loads.

Power cables must be able to safely carry maximum load current without overheating or causing insulation degradation. It is important to power supply performance to minimize IR (voltage drop) loss within the cable. These losses have a direct effect on the quality of power delivered to and from instruments and corresponding loads.

When specifying wire gauge, consider derating due to operating temperature at the wire location. Wire gauge current capability and insulation performance drops with the increased temperature developed within a cable bundle and with increased environmental temperature. Thus, short cables with generously derated gauge and insulation properties are recommended for power source applications.

Be careful when using published commercial utility wiring codes. These codes are designed for the internal wiring of homes and buildings and accommodate the safety factors of wiring loss, heat, breakdown insulation, aging, etc. However, these codes consider that up to 5% voltage drop is acceptable. Such a loss directly detracts from the quality performance specifications of this SG power supply. Also, consider how the wiring codes apply to bundles of wire within a cable arrangement.

In high performance applications requiring high inrush/ transient currents, additional consideration is required. The cable wire gauge must accommodate peak currents developed at peak voltages, which might be up to ten times the average current values. An underrated wire gauge adds losses, which alter the inrush characteristics of the application and thus the expected performance.

Table 2–9 presents wire resistance and resulting cable voltage drop at maximum rated current, with the wire at 20°C. Copper wire has a temperature

coefficient of α = 0.00393Ω/°C at t1 = 20°C, so that at an elevated

temperature, t2, the resistance would be R2 = R1 (1 + α (t2 - t1)).

2-12 M550221-01 Rev AA

Sorensen SGI Series Installation

Column 1

Column 2

Column 3

Column 4

Size, AWG

A(RMS)

Ohms/100 Ft

(One Way)

Voltage Drop/100 Ft

(Column 2 x Column 3)

0.253

5.06

0.156

3.90

0.999

3.00

0.063

2.52

0.040

2.20

0.025

1.75

0.020

1.70

0.016

1.52

110

0.012

1.32

125

0.010

1.25

145

0.008

1.16

000

165

0.006

0.99

0000

195

0.005

0.98

Table 2–9. Wire Resistance and Voltage Drop, 20°C

M550221-01 Rev AA 2-13

Installation Sorensen SGI Series

Power Supply

Sense (+)

Sense (-)

Out (+)

Out (-)

Battery Application

Inductive Load Application

Freewheel Diode

2.6 LOAD CONSIDERATIONS

This section provides guidelines for incorporating protective diode networks at the output of the power supply to prevent damage while driving inductive loads or loads having stored energy that could be circulated back to the power supply.

2.6.1 Inductive and Stored-Energy Loads

To prevent damage to the power supply from inductive voltage kickback, connect an anti-parallel diode (rated at greater than the supply’s output voltage and current) across the output: Connect the cathode to the positive output and the anode to return.

Where positive load transients, such as back EMF from a motor might occur, or stored energy is present such as a battery, a second blocking diode in series with the output is recommended to protect the power supply.

BLOCKING AND ANTI-PARALLEL DIODES

Ensure that the chosen components are suitably rated for the particular

inductance and energy to be dissipated. The Peak Reverse Voltage ratings should be a minimum of 2 times the Power Supply maximum output voltage. The Continuous Forward Current ratings should be a minimum of 1.5 times the power supply maximum output current. A heatsink may be required to dissipate the power caused by flow of current.

2-14 M550221-01 Rev AA

Figure 2-3. Diode Connection

Sorensen SGI Series Installation

2.7 Outline Drawings

Figure 2-4 through Figure 2-7 show the outlines and overall dimensions for installation of the 3U and 6U models of the SGI Series power supplies. Figure 2-8 through Figure 2-16 show locations of rear panel connectors. Figure 2-17 shows protective covers for the AC input and DC output of the 3U 10V-30V models.

M550221-01 Rev AA 2-15

Installation Sorensen SGI Series

Figure 2-4. Installation Drawing, 3U Models 10V-30V

2-16 M550221-01 Rev AA

Sorensen SGI Series Installation

Figure 2-5. Installation Drawing, 3U Models 40V-600V

M550221-01 Rev AA 2-17

Installation Sorensen SGI Series

Figure 2-6. Installation Drawing, 3U Models 800V and 1000V

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Sorensen SGI Series Installation

Figure 2-7. Installation Drawing, 6U Models 20kW-30kW

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Figure 2-8. Rear Panel, Standard, 3U Models 10V-30V

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Figure 2-9. Rear Panel, GPIB Option, 3U Models 10V-30V

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Figure 2-10. Rear Panel, Ethernet Option, 3U Models 10V-30V

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Figure 2-11. Rear Panel, Standard, 3U Models 40V-600V

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Figure 2-12. Rear Panel, GPIB Option, 3U Models 40V-600V

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Figure 2-13. Rear Panel, Ethernet Option, 3U Models 800V and 1000V

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Figure 2-14. Rear Panel, Standard, 6U Models 20kW-30 kW

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Figure 2-15. Rear Panel, GPIB Option, 6U Models 20kW-30 kW

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Figure 2-16. Rear Panel, Ethernet Option, 6U Models 20kW-30 kW

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Figure 2-17. Instructions for Assembly of AC and DC Covers

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3.1 Introduction

The SGI Series adds powerful functionality and sequence programming to the SG family of DC power supplies. The graphical display, front panel keyboard, and context sensitive keys make setup of the sophisticated functions simple and easy. The following sections provide detailed information on the controls and indicators, programming conventions, and the front panel menu structure of the SGI Series.

SECTION 3

OPERATION

3.1.1 Front/Rear Panels

Figure 3-1 shows the front panel of the 3U models; the 6U models have the same controls and indicators. Figure 3-2 through Figure 3-10 show the rear panels of the 3U and 6U models, with their connectors and controls.

Figure 3-1. Front Panel Controls and Indicators (3U Model Shown)

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WARNING!

The power-up factory default state is output enabled, where the output will be energized at the settings of voltage and current.

Item Reference

Functional Description

ON/OFF Switch

Two–position switch turns the power supply on and off.

WARNING!

OFF position does not remove AC input from internal circuits or input terminal blocks. Disconnect external AC input before servicing unit.

Front Panel Display

256 x 64 graphic vacuum fluorescent display for menus, settings and functions.

Function Keys, F1-F4

Context-sensitive, soft-keys execute commands specified on front panel display by its corresponding label.

LED Mode Indicators:

Indicates the mode that is active.

Output On

Power to output terminals is present.

Output Off

Power to output terminals is disabled.

Remote

Supply presently controlled by remote digital interface.

Constant Voltage

Power supply presently in Constant-Voltage mode.

Constant Current

Power supply presently in Constant-Current mode.

Constant Power

Power supply presently in Constant-Power mode.

NAVPAD

Navigation Pad navigates between and within screens; also used for increment/decrement control to make live updates; see Section 3.5 Section 3.6.

Programming Keys:

Specific function keys, also called hard-coded keys.

Voltage

Jumps directly to Voltage programming.

Current

Jumps directly to Current programming.

Overvolt

Jumps directly to Overvoltage Protection programming.

Output On/Off Key

Enables/disables power to the output terminals.

Numeric Keys 0-9

Used to enter specific values for editable items.

ESC Key (escape)

Cancels numeric input and/or returns to previous menu.

Menu/Enter

“Menu” returns to Home Menu Page 1; see Section 3.7.

“Enter” sets a value that was input via numeric keys.

Table 3–1. Front Panel Controls and Indicators

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Figure 3-2. Rear Panel Interface, Standard, 3U Models 10V-30V

Figure 3-3. Rear Panel Interface, GPIB Option, 3U Models 10V-30V

Figure 3-4. Rear Panel Interface, Ethernet Option, 3U Models 10V-30V

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Figure 3-5. Rear Panel Interface, Standard, 3U Models 40V-600V

Figure 3-6. Rear Panel Interface, GPIB Option, 3U Models 40V-600V

Figure 3-7. Rear Panel Interface, Ethernet Option, 3U Models 800V and 1000V

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Figure 3-8. Rear Panel Interface, Standard, 6U Models 20kW-30kW

Figure 3-9. Rear Panel Interface, GPIB Option, 6U Models 20kW-30kW

Figure 3-10. Rear Panel Interface, Ethernet Option, 6U Models 20kW-30kW

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Item

Reference

Functional Description

AC Input Connectors

Connection for 3-phase AC.

AC Input Safety Ground

Connection for safety ground wire.

DC Output Bus Bars

Positive (+) and negative (–) outputs.

HV DC Output Studs

Positive (+) and negative (–) outputs for 800V and 1000V models only.

PAR OUT

Parallel Out connector of master unit for configuring parallel operation of units when connected to Parallel In connector of slave unit; see Section 3.16 .

PAR IN

Parallel In connector of slave unit for configuring parallel operation of units when connected to Parallel Out connector of master unit; see Section 3.16.

ANALOG CONTROL

Remote Analog Interface connector, J1, for programming and monitoring signals of output, status indication, and remote shutdown signals; see Table 3–5 for individual pin descriptions.

SENSE Connector

Input connector, J3, for remote sensing of voltage at the load to compensate for line drop in load cables; see Section 3.14.

HV SENSE Connector

Input connector,J3, for remote sensing of voltage at the load to compensate for line drop in load cables, 800V and 1000V models only; see Section 3.14.

RS-232 Connector†

RS-232 connector for remote digital control.

Configuration Switch†

Eight-position DIP switch to configure the digital interface of the unit

Refer to Figure 3-2, Figure 3-5, and Figure 3-8Error! Reference source not found..

†

Refer to the Programming Manual for details on the digital interface.

Table 3–2. Rear Panel Connectors and Controls, Standard

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Item

Reference

Functional Description

AC Input Connectors

Connection for 3-phase AC.

AC Input Safety Ground

Connection for safety ground wire.

DC Output Bus Bars

Positive (+) and negative (–) outputs.

HV DC Output Studs

Positive (+) and negative (–) outputs for 800V and 1000V models only.

PAR OUT

Parallel Out connector of master unit for configuring parallel operation of units when connected to Parallel In connector of slave unit; see Section 3.16.

PAR IN

Parallel In connector of slave unit for configuring parallel operation of units when connected to Parallel Out connector of master unit; see Section 3.16.

ANALOG CONTROL

Remote Analog Interface connector, J1, for programming and monitoring signals of output, status indication, and remote shutdown signals; see Table 3–5 for individual pin descriptions.

SENSE Connector

Input connector, J3, for remote sensing of voltage at the load to compensate for line drop in load cables; see Section 3.14.

HV SENSE Connector

Input connector,J3, for remote sensing of voltage at the load to compensate for line drop in load cables, 800V and 1000V models only; see Section 3.14

RS-232 Connector†

RS-232 connector for remote digital control.

Configuration Switch†

Eight-position DIP switch to configure the digital interface of the unit

GPIB Connector

†

GPIB connector for remote digital control.

Refer to Figure, Figure 3-6, and Figure 3-9.

†

Refer to the Programming Manual for details on the digital interface.

Table 3–3. Rear Panel Connectors and Controls, GPIB Option

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Item

Reference

Functional Description

AC Input Connectors

Connection for 3-phase AC.

AC Input Safety Ground

Connection for safety ground wire.

DC Output Bus Bars

Positive (+) and negative (–) outputs.

HV DC Output Studs

Positive (+) and negative (–) outputs for 800V and 1000V models only.

PAR OUT

Parallel Out connector of master unit for configuring parallel operation of units when connected to Parallel In connector of slave unit; see Section 3.16.

PAR IN

Parallel In connector of slave unit for configuring parallel operation of units when connected to Parallel Out connector of master unit; see Section 3.16.

ANALOG CONTROL

Remote Analog Interface connector, J1, for programming and monitoring signals of output, status indication, and remote shutdown signals; see Table 3–5 for individual pin descriptions.

SENSE Connector

Input connector, J3, for remote sensing of voltage at the load to compensate for line drop in load cables; see Section 3.14.

HV SENSE Connector

Input connector,J3, for remote sensing of voltage at the load to compensate for line drop in load cables, 800V and 1000V models only; see Section 3.14.

RS-232 Connector†

RS-232 connector for remote digital control.

Configuration Switch†

Four–position DIP switch to configure the digital interface of the unit

External User Connector†

Input/Output connector for external auxiliary digital control signals.

ETHERNET Connector†

Ethernet connector for remote digital control.

RESET Switch†

Reset switch to return configuration parameters to factory default settings; must be depressed until LAN LED is blinking.

LAN†

LED indicator: continuously on indicates Ethernet connection; off indicates no Ethernet connection; blinking indicates Instrument ID.

Refer to Figure 3-4, Figure 3-7, and Figure 3-10.

†

Refer to the Programming Manual for details on the digital interface.

Table 3–4. Rear Panel Connectors and Controls, Ethernet Option

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WARNING!

The power-up factory default state is output enabled, and the output will be energized with the settings of voltage and current at zero. At initial power-on a screen is displayed with a warning that the output will be enabled after countdown of a 10-second timer; during this state, the output Voltage and Current are programmed to zero, the Overvoltage Protection (OVP) is set to maximum, and the Output State is OFF. After the 10-second timer has elapsed, the Output State is changed to ON.

3.2 Basic Operation and Output Verification

This section provides an overview and examples of front panel programming, Default Programming menu operation, and initial functional tests for the SGI Series power supply.

The SGI Series power supply is shipped from the factory configured for front panel (local) voltage/current/OVP control, and with the remote sense not connected (default to internal local voltage sensing at chassis output terminals). The remote sense leads must be connected externally by the user to achieved performance specifications. The Analog Control connector is supplied with a mating connector which has the remote output ON/OFF control signals jumpered for ON (Pin-5 shorted to Pin-6) in order to allow the output to be enabled.

3.2.1 Initial Setup

Before connecting the unit to the AC mains, ensure that the front panel ON/OFF power switch is in the OFF position. Check the Analog Control (J1) mating connector on the rear panel to verify that Pins 5 and 6 (Remote Output On/Off) are shorted together. This is the default configuration installed from the factory. This jumper allows the output of the supply to be enabled from the front panel when the Output On/Off button is pressed.

3.2.2 Default Programming Menu

The following subsections describe operation in Constant-Voltage Mode, Constant-Current Mode, and Overvoltage Protection (OVP) using the Default Programming Menu for input of setpoints.

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3.2.3 Constant-Voltage Mode Operation

In Constant-Voltage mode operation, the output voltage is regulated at the programmed value while the output current varies with the load requirements. The voltage could be programmed either through the front panel or by the remote analog voltage programming input; see Section 3.11. To verify operation in Constant-Voltage mode, follow these steps:

1. Ensure that there is no load connected to the output.

2. Ensure that the remote sense is connected to the output terminals.

3. Connect a digital voltmeter (DVM) across the rear panel positive and negative output terminals, observing the correct polarity. Make sure the DVM is in the DC voltage mode and the range is adequate to handle the full-scale voltage of the power supply.

4. Apply power to the AC mains input, and turn on the power supply.

5. If the default power-on state had previously been configured to be OFF, when the supply reaches the Home menu Page 1, enable the output by pressing “Output On/Off”.

6. Enter the Default Programming menu by pressing either of the voltage, current or overvoltage front panel keys:

7. Program the Current to 10% of rated output (this programs the current above zero to enable supplying output current while in the constant-voltage mode). See Section 3.8.1 for more details on programming.

8. Navigate to Voltage programming. With the Editing Arrow adjacent to

“Set Volt”, press and hold the NavPad up arrow and observe both the

front panel voltage display and the output of the DVM begin to accelerate up. The output voltage should increase from 0 V to the maximum rated voltage of the supply. The front panel display and DVM readings should track within the accuracies of the meter and the front panel display.

9. Verify the front panel Constant Voltage Mode indicator is on.

10. Program the Voltage and Current back to zero.

11. Turn the power supply off.

12. If Constant-Voltage mode operation did not function as indicated above, verify the setup and perform the check again. If the function continues to fail, contact the factory for assistance.

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3.2.4 Constant-Current Mode Operation

In Constant-Current mode operation, the output current is regulated at the selected value while the output voltage varies with the load requirements. The current could be programmed either through the front panel or by the remote analog current programming input; see Section 3.10. To verify operation in Constant-Current mode, follow these steps:

1. If the output had been previously energized, allow 5 minutes for the output capacitors to discharge. Connect a high current DC ammeter across the rear panel positive and negative output terminals, observing the correct polarity. Select wire leads of sufficient current carrying capacity and an ammeter range compatible with the units maximum rated output current.

Note:

without measuring the current with an ammeter, but using only the front panel meter, could be performed by shorting the output terminals together.

2. Turn on the power supply.

3. If the default power-on state had been previously configured to be OFF, when the supply reaches the Home menu Page 1, enable the output by pressing “Output On/Off”.

4. Enter the Default Programming menu by pressing either of the voltage, current, or overvoltage front panel keys:

5. Program the Voltage to 10% of rated output (this programs the voltage above zero to enable supplying output voltage while in the constantcurrent mode). See Section 3.8.1 for more details on programming.

6. Navigate to Current programming. With the Editing Arrow adjacent to

“Set Curr”, press and hold the NavPad up arrow and observe both the

front panel current display and the output of the DC ammeter begin to accelerate up. The output current should increase from 0 A to the maximum rated current of the supply. The front panel display and DC ammeter readings should track within the accuracies of the meter and the front panel display.

Verification that the supply could source rated output current,

7. Verify the front panel Constant Current Mode indicator is on.

8. Program the Voltage and Current back to zero.

9. Turn the power supply off.

10. Allow 5 minutes for the output capacitors to discharge and disconnect the ammeter or short from the output terminals.

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11. If Constant-Current mode operation did not function as indicated above, verify the setup and perform the check again. If the function continues to fail, contact the factory for assistance.

3.2.5 Overvoltage Protection

The Overvoltage Protection (OVP) function allows the supply to shutdown the output, if it were to exceed a preset voltage. This may be used to protect sensitive circuits or loads from damage caused by an excessive voltage on the output of the supply. The Overvoltage Protection (OVP) could be programmed either through the front panel or by the remote analog OVP programming input; see Section 3.12. To verify OVP operation, follow these steps:

1. Make sure there is nothing connected across the output terminals.

2. Turn on the power supply.

3. if the default power-on state had been previously configured to be OFF, when the supply reaches the Home Menu Page 1, enable the output by pressing “Output On/Off”.

4. Enter the Default Programming menu by pressing either of the voltage, current, or overvoltage front panel keys:

5. Program the Current to 10% of rated output (this programs the current above zero to enable supplying output current while in the constant-voltage mode). See Section 3.8.1 for more details on programming.

6. Navigate to OVP (Overvoltage) programming. The factory default setting is approximately 110% of the maximum rated output of the supply. With

the Editing Arrow adjacent to “Set OVP”, press and hold the NavPad

down arrow and observe the front panel voltage display accelerate down. Release the NavPad down arrow when the OVP is programmed to about 80-90% of the maximum rated output voltage value.

7. Navigate to Voltage programming. With the Editing Arrow adjacent to “Set Volt”, press and hold the NavPad up arrow and observe the front panel voltage display accelerate up. When the output voltage exceeds the OVP trip point the OVP Warning screen will be display with the voltage level reached at OVP trip. The Output State will be programmed to OFF, and the voltage, current, and OVP settings will retain their previous settings.

8. Press (F4) and the fault screen will clear after 4 seconds. The Home Menu Page 1 will be displayed, and the output will remain disabled.

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9. Enter the Default Programming menu by pressing either the voltage, current, or overvoltage front panel keys:

10. Program the OVP setting as appropriate for the application as shown above. If OVP will not be used,

then “OVP set” programming may be set at maximum, approximately

110% of the rated output voltage of the supply.

11. If OVP mode did not function as indicated above, verify the setup and perform the check again. If the function continues to fail, contact the factory for assistance.

3.3 Initial Start-Up Displays

Upon initial start-up of unit, the following screens are displayed in sequence, after initial splash screens which show manufacturer's information:

LAST CAL DATE

Displays for seven seconds, showing date that the unit was last calibrated. See SG Series Programming Manual, P/N M550129-03, for calibration information and how to update "Last Cal Date."

OUTPUT-ENABLED WARNING

Indicates number of seconds left in a 10-second countdown, warning the user that the output will be enabled at the end of the countdown unless the process is aborted by pressing the F1 key on the front panel. Once aborted, the output remains off until the user enables it with the Output On/Off key: refer to Section 3-1. This warning appears only if the unit is both in Local mode and was last set and saved to enable the output at its next start-up. See Section 3.8.2 for changing and saving the Power On (PwrOn) Output settings.

Note:

Factory default setting for Output at start-up is ON, output enabled.

HOME MENU, PAGE 1

Final screen to display upon initial start-up of the unit; it is from here that the user may access all menu functions. See Menu Map, Section 3.7, for Home

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Editing arrows for navigating to editable items within a menu, and for editing (see Navigation, Section 3.5, and Editing, Section 3.6.

Function keys

Name of active screen

Editable values

Measured values for Voltage and Current.

Graph indicates portion of the present value relative to the maximum value.

Navigation arrow moves to next page in menu (see Navigation, Section 3.5).

Function keys

OVP Setpoint Indicator Bar (vertical bar).

Menu pages 1 through 3 and their submenus. See Functions, Section 3.8, for access and program menu functions.

HOME TIMEOUT

Displays after 30 seconds of idle time in any of the three Home Menu pages; pressing the F4 key on the front panel returns the display to Home Menu Page 1.

3.4 Display Elements

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3.5 Navigation

The primary keys used to navigate are: the escape key, ESC, the function keys, F1-F4, the navigation pad, NavPad, the menu and enter key, Menu/Enter and voltage, current, overvoltage protection programming keys, V/I/OVP Prog. Their functions are as follows:

ESC: Probably the most important key to remember, escape works like the back or return button in a browser, bringing the display back one menu level to the previous menu. Continued pressing will eventually return the display to the Home Menu. Escape is not functional in a Fault Screen.

F1-F4: To enter a function menu or execute a function, press the corresponding Function key to the right of the function to be entered or executed. Only those function keys defined within that menu will be operational.

NavPad: Used to move between menu pages and between editable items within a menu

o If a Navigation Arrow is displayed at the top and/or bottom of a screen,

pressing up/down on the NavPad allows the user to move between pages within a menu.

o If the Editing Arrow is displayed, pressing left/right on the NavPad

allows the user to move between editable items within a menu. If a screen has only one editable item, left/right arrow has no effect. See Editing, Section 3.6.

Menu/Enter: Pressing “Menu” from any submenu jumps the display directly to the Home Menu, Page 1, except in sequence or power mode; see note below. Pressing “Enter” moves the editing arrow to the next editable item in the menu, similar to the right arrow on the NavPad.

V/I/OVP Prog: Pressing the “Voltage,” “Current,” or “Overvolt” programming key displays the Default Programming menu with the editing arrow at the corresponding function in that menu - see note below.

Note:

programming keys do not function while running a sequence, paused in a sequence, in sequence single step mode, or running in power mode.

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The “Menu” key and the “Voltage,” “Current” and “Overvolt”

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WARNING!

While Output is enabled, the editable item being programmed Voltage, Current, Overvoltage or Power is “Live Updated”, and takes effect on the output terminals immediately.

3.6 Editing

The primary keys used to edit are: ESC, F1-F4, NavPad, Menu/Enter and Keypad 0-9. Their functions are as follows:

ESC: In editing, ESC (escape) functions like the escape key on a keyboard. While programming an editable item, the escape key can be used to clear the entered value before it is accepted and takes effect. This leaves the program function setting at the original value before editing began.

F1-F4: Not used to program editable items directly, Function keys may be used to save, recall, cut, past, insert or delete edits made in some menus. These functions will be indicated to the left of the function keys in the specific menus they are used.

NavPad: The NavPad functions as an increment/decrement editing and “Live

Update” (Pressing Up/Down). “Live Update” means the value or item displayed

due to an edit change from the NavPad, is actively changing the operation of the supply in real time when Output is On. This includes programming editable items as well as scrolling through option lists within a menu.

 Programming editable items: If an Editing Arrow is displayed,

pressing the NavPad up or down incrementally adjusts the editable item value adjacent to the Editing Arrow by the least significant digit per press in the respective direction. If the NavPad is pressed up or down and held, the selected editable item will accelerate from set point to fullscale or from set point to zero, respectively, within 15 seconds. If the

output is enabled, the output terminals will “Live Update” with the

programmed changes.

 Scrolling through option lists: Pressing the NavPad up or down

incrementally scrolls through the listed items available and “Live Update” selects the item being displayed. Option lists wrap around

from top to bottom (pressing NavPad down) and bottom to top (pressing NavPad up).

Menu/Enter: “Enter” is used to accept a value edited or entered using “Keypad 0-9.” When “Enter” is pressed the value edited is programmed into

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memory and the Editing Arrow moves to the next editable item. If the output is enabled, the programmed value takes effect on the output terminals immediately after “Enter” is pressed.

 “Menu” is not used to edit.

Keypad 0-9: “Keypad 0-9” is used to program numeric values into editable

items using single digit entry. “Enter” must be pressed to program the edited

value into memory. The decimal key is for future implementation.

 If the editing arrow is displayed, pressing “Keypad 0-9” will activate the

editable item to the left of the Editing Arrow and display the number(s) pressed. As the first number is input, the display begins with the least significant position first, and shifts left as additional numbers are pressed (see Example below). Once the user starts to input a value, the Editing Arrow will begin to blink – a blinking Edit Arrow indicates that the value entered has not been programmed into memory; also,

both the NavPad right/left arrows and the NavPad up/down “Live Update” are no longer operational in this condition. The user must

either abort (see Section 3.6.1, Aborting an Edit) or press Enter to accept the inputted value.

Example: Programming 50V

Navigate to voltage programming by pressing the “Voltage” programming key.

The Default Programming menu is displayed and the Editing Arrow is to the right of the “Set Volt” editable item value. Begin entering the value:

 Press “5” The display “Set Volt” value reads, “0.5V” (Notice the Editing Arrow

begins to blink).

 Press “0” The display “Set Volt” value reads, “5.0V”  Press “0” The display “Set Volt” value reads, “50.0V”  Press “Enter” The value is programmed into memory. (Notice the Editing

Arrow stops blinking and moves automatically to the next editable item. This means the value has been programmed).

3.6.1 Aborting an Edit

“Escape” can be used to cancel an edit before it is accepted. When pressed, the value of the editable item displayed will default to the previous value before editing began. The Editing Arrow does not change position and will no longer be blinking.

Note:

“Keypad 0-9”, it will be ignored and the user will be alerted through an audible signal.

If an invalid or out-of-range value is entered with either the NavPad or

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SEQUENCE See Sections 3.7.6 for submenus and 3.8.4 for details.

POWER - See Sections 3.7.8 for next screens and 3.8.5 for details.

SAVE - See Section 3.8.2 for details.

RECALL - See Section 3.8.2 for details.

NavPad

Toggle between pages by pressing up or down on the NavPad. See Section 3.5.

Page 1

Page 2

Page 3

Home Menu is made up of three pages from which the user may navigate to the various function or command screens.

Return to Home Menu Page 1 by pressing Escape as needed, or Menu, except as noted in Section 3.5

3.7 Menu Map

3.7.1 Home Menu

3.7.2 Default Programming Menu

Access this menu directly with the hard-code keys, Voltage, Current, or Overvoltage, on the Control Panel. See Section 3.8.1 for details.

3.7.3 Navigating from Home Menu Page 1

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DISPLAY - See Section 3.8.7 for details.

LOCK KEY - See Sections 3.7.12 for next screen, and 3.8.8 for details.

LANGUAGE - See Section 3.8.9 for details.

INFO - See Section 3.8.10 for details.

Ethernet Remote Menu

REMOTE - See Section 3.7.9 for submenus and Section

SYSTEM - See Section 3.8.12 for details.

GPIB Remote Menu

3.7.4 Navigating from Home Menu Page 2

3.7.5 Navigating from Home Menu Page 3

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3.7.6 Sequence Menu

Refer to Basic Sequence Operation under Section 3.8.4.

3.7.7 Sequence Programming Operation

The screens in this section show the various operations available for programming a sequence. See details on Step Operations under Section 3.8.4.

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3.7.8 Constant-Power Setup Menu

See Section 3.8.5 for details.

3.7.9 Remote Menu

Remote menu is either GPIB or Ethernet option. The submenus for Ethernet are mapped here; there are no submenus for the GPIB Remote screen (see Section 3.8.11 for details).

ETHERNET

The Ethernet Remote Menu provides submenus for Save (F2), LXI Settings (F3) and Ethernet Menu (F4). The Ethernet Menu provides submenus for Server Port (F3) and Static IP Configuration (F4). See Section 3.8.11 for details.

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General hardware failure has occurred. Press F4, Clear Fault, to reset the unit.

Overvoltage Protection was tripped. Press F4, Clear OVP; the unit will reset in 4 seconds.

Displays when a saved setting with Output On is recalled. See Section 3.8.3 for details.

Home Menu Time Out Screen displays after 30-second idle.

Screen to confirm Unlock control panel keys.

Locked Key Screen (From Home Menu Page 2, F2) to unlock press F4

3.7.10 Remote Control Screen Examples

Remote screens display when operation is controlled by computer. Pressing F4 from any Remote screen returns operation to Local Mode.

3.7.11 Warning Screens

3.7.12 Other Screens

3.8 Programming/Operating Functions

This section describes various programming/operating instructions

3.8.1 Voltage, Current, and Overvoltage Protection Programming

Press Voltage, Current, or Overvoltage key on Control Panel to go directly to the Default Programming Menu. The editing arrow will be displayed next to the corresponding item pressed.

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PROGRAMMING VOLTAGE

Go directly to Voltage programming by pressing the voltage key. The Default Programming menu is displayed and the Editing Arrow is to the right of the "Set Volt" editable value. Edit the value by NavPad up/down

Sorensen SGI Series Calibration and Verification

Values pulled in from Default Programming Menu.

Save to location.

Values currently saved in location.

or by entering the value with "Keypad 0-9". For more details see Section 3.6.

PROGRAMMING CURRENT

Go directly to Current programming by pressing the current key. The Default Programming menu is displayed and the Editing Arrow is to the right of the "Set Curr" editable value. Edit the value by NavPad up/down or by entering the value with "Keypad 0-9". For more details see Section 3.6.

PROGRAMMING OVERVOLTAGE PROTECTION

Go directly to Overvoltage trip point programming by pressing the overvoltage key. The Default Programming menu is displayed and the Editing Arrow is to the right of the "Set OVP" editable value. Edit the value by NavPad up/down or entering the value with "Keypad 0-9". For more details see Section 3.6.

3.8.2 Save

There are 11 memory locations (PwrOn, 1 through 9, LAST 0/1) into which a programmed output configuration of Voltage, Current, OVP (Overvoltage Protection trip point) and Output Condition can be stored. The LAST 0/1 configuration stores and recovers programmed Voltage, Current, OVP (Overvoltage Protection trip point), Output Condition, and Foldback Protection when power supply is turned off. From Home Menu Page 1 press (F1) to enter the Save menu. Voltage, Current and OVP values programmed in the Default Programming menu will be pulled into the Save menu, top line, upon reaching that menu. In addition, the present output condition, output engaged or output disabled, will be indicated.

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EDIT VOLTAGE, CURRENT AND OVP

Toggle between the editable items using the NavPad and edit Voltage, Current and OVP to appropriate values (see Section 3.6 for editing details).

Calibration and Verification Sorensen SGI Series

EDIT OUTPUT CONDITION

Pressing NavPad up/down will toggle the output condition indicator on ( ) to indicate the output will be enabled and off (blank) to indicate the output will be disabled.

Note:

SAVING A CONFIGURATION

With the Editing Arrow adjacent to “Save Location” pressing NavPad

up/down allows the user to scroll through the list of memory locations (PWR ON, 1-9, LAST 0/1). Using configurations (PWR ON, and 1-9) Select the appropriate location and press (F3) to save the configuration to that location. The bottom line of the screen will update with the configuration information saved. Using configuration (LAST 0/1) press (F1) to turn ON or (F2) to turn OFF and press (F3) to save configuration.

Press (F4), “Escape” or “Menu” key to exit to the Home Menu Page 1 at

any time.

Note: If setting LAST 1. The EEPROM that stores the Last Programmed

Edits will not take effect until the configuration is saved.

Values(Voltage, Current, OVP, Output State, Foldback Protection) is limited to 100,000 Write Cycles.

SAVING TO PWR ON

“PWR ON” is a unique “Save Location.” If a configuration is saved to “PWR ON” location, the next time the ON/OFF front panel switch is

cycled, the SGI unit will power up into the state this configuration was saved. If the Output Condition was saved as on ( ), which means power enabled, a warning screen will be displayed at power up. The user will have 10 seconds to press (F1) and abort the operation. If the count times out, the supply output terminals will be live and programmed to the saved configuration values; see Section 3.2 for Output-Enabled Warning. All other saved configuration locations must be recalled to become active; see Section 3.8.3.

3.8.3 Recall

There are 10 memory locations (as above, PwrOn and 1-9) from which a programmed output configuration of Voltage, Current, OVP (Overvoltage Protection trip point) and Output Condition can be recalled.

From Home Menu Page 1 press (F2) to enter the Recall menu. Using the NavPad up/down arrows scroll through the list of saved configurations. Recall a saved configuration by pressing the function key (F2-F4) to the right of that configuration. If a configuration was saved with the Output

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Condition on ( ) and that configuration is recalled, a warning screen (See Menu Map, Section 3.7.9) will be displayed *. The user is given the option to press Yes (F1) to enable or No (F4) to disable the output. All other settingwill be programmed according to the recalled configuration regardless of this choice.

Note:

The warning screen will not appear if the Output is already enabled.

3.8.4 Sequencing

INTRODUCTION

The SGI sequencing function allows the user to set up the supply to automatically run a series of voltage, current and power mode operations. This is especially useful for setting up the supply to test to compliance standards, or unburdening the test computer in automated testing applications. Through RS-232, IEEE-488 or Ethernet, an external computer can trigger the sequences (see SG Series Programming Manual). Up to 50 sequences may be stored, with each sequence containing up to 20 individual steps. With the ability to string sequences together and an extensive list of step functions such as ramping, looping, goto and subroutine calls, the user can define a nearly infinite variety of test sequences.

The following sections will assist the user in programming, testing and running a sequence from the front panel.

BASIC SEQUENCE OPERATION

To access the main Sequencing menu press F3 from Home Menu Page 1. From here any one of 50 sequences may be selected. The default names for sequences are TESTxx where xx is a number from 01 to 50. Using SCPI commands via the RS-232, IEEE-488, or Ethernet interface, the user may rename these test sequences with meaningful names of up to 15 characters (see SG Series Programming Manual).

Note:

DO NOT use non-sequence-related SCPI commands while performing

sequence operations.

Note:

DO NOT use sequence SCPI commands as stand-alone commands

outside a sequence.

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CAUTION!

RESTRICTIONS ON SEQUENCE PROGRAMMING In order to allow maximum flexibility for generating small incremental changes during a test sequence, the SGI allows 1 ms time resolution on each step. With this capability, however, it is possible to create output changes with fast slew rates, that could generate potentially damaging large currents, in the output capacitors of the unit; refer to the guideline note, below.

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Frequency

% V(PK-PK)

10Hz

25%

50Hz

5.0%

100Hz

2.5%

150Hz

1.67%

200Hz

1.25%

Note:

When creating test sequences, use the following guidelines to prevent damage

to the unit:

 Estimate the AC frequency and peak-to-peak voltage, V(PK-PK) of

the desired test sequence.

 Convert the estimated V(PK-PK) to a % of maximum output

voltage (e.g., if V(PK-PK) is 10V and maximum voltage of the supply is 100V, then %V(PK-PK) = 10%)

 Verify that the frequency and %V(PK-PK) do not exceed the

values below:

 Another consideration is the actual rise and fall capabilities of the

output of the supply. Although damage will not occur, the shape of the output waveform will be affected by the rise/fall times in relation to programmed sequence settings. These vary widely depending on the load conditions; contact the factory for further information.

Note:

Contact the factory for detailed information if the desired waveform

exceeds the recommended limits as discussed.

To change the test sequence, use the NavPad up/down to scroll through the test list. From this menu the user may Start (F1), Single Step (F2), Program (F3) or Delete (F4) a sequence.

START: press F1 from the main Sequence Menu to start and run a test sequence. The display will show the test sequence name and step number (e.g., TEST01-12, Sequence TEST01, step 12). It will also indicate the current operation being executed (see Section 3.8.4.3, Operations) and will display voltage, current, OVP, power and time remaining for that step. The time format is hhhh:mm:ss:sss (last three digits are milliseconds).

User may pause or stop the test at any time by pressing either F3 to pause or F4 to stop the sequence. The output will pause or stop in the same state as the test step was when the key was pressed. Pressing F3 (Resume) restarts the sequence from the beginning of the same step. (

Note:

For steps with voltage or current ramps, the step will resume at the beginning of the ramp and not at the point at which the ramp was paused.) Pressing F4 (Stop) to stop the

sequence returns the display to the main Sequence Menu. SINGLE STEP: press F2 from the main Sequence Menu to single step

through a test sequence. The display will show the test sequence name and

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step number. It will also indicate the current operation being executed and display voltage, current, OVP, power and time remaining for that step.

User may start the sequence after any step causing it to run in continuous mode, by pressing F1 (Start). The sequence will start from the beginning of the test sequence, not the beginning of the current step. To continue to single step through each sequence step, press F2 (NextStep). Pressing F2 NextStep before the timer ends, will replay the step. Pressing F4 (Stop) allows the user to stop the single step mode, and the display returns to the main Sequence Menu.

PROGRAM: press F3 from the main Sequence Menu to program a test sequence. The Test Sequence submenu shows the name of the current test sequence and step number. In addition it displays the primary operation of the test step (there are 13 different operations, see Section 3.8.4.3, Operations). From this submenu the user may copy (F1), paste (F2), insert (F3) or delete (F4) a test step.

CopyStep (F1): copies the current step characteristics into a buffer for later recall using the PasteStp (F2) function.

PasteStp (F2): pastes the current characteristics from the copy buffer into the existing test step.

Insert (F3): inserts a new step before the currently displayed test step. The default operation in the new step is set to NOP.

Delete (F4): deletes the current test step from the test sequence, and inserts NOP into step 20 of the sequence.

DEL TEST: press F4 from the main Sequence Menu to delete the entire currently selected test sequence. If Del Test is selected, a warning screen will appear prompting the user to either confirm (Yes – F1) or cancel (No – F4) the delete action. Deleting a test actually fills each test step in the sequence with a NOP (see Section 3.8.4.3)., and fills Step 21 with STOP operation.

STEP OPERATIONS

When programming a test sequence (see Section 3.8.4.2) each step operation can be any one of thirteen different functions. To access those functions, from Home Menu Page 1 press F3 (see Menu Map, Sections 3.7.2, 3.7.5, and 3.7.6), and use the NavPad to scroll through the various step operations (see Section 3.5, Navigation) while in the Sequence Step Programming submenu.

1. Once an operation has been selected for the present step, navigate to the editable items and input values for each setting as appropriate (see Section 3.6, Editing).

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2. After programming a step, navigate to the step-number location on the screen and scroll to the next step number to be programmed.

3. Once at the next step number to be programmed, start again by choosing an operation for that step and continue as described above.

4. At the end of the sequence or to abort the sequence, press either the Escape key or Menu to jump to the Save screen. F1 (Yes) saves the sequence (in non-volatile memory) and returns to main Sequence Menu. F4 (No) will retain the current changes only until the power supply is turned off. The next power on restores the sequence to its previous condition.

The following are descriptions for each sequence operation: NOP, No Operation: Used as a placeholder in the test

sequence, no values are changed during this step, and it does not add time to the sequence.

V/I Mode, Voltage/Current Mode: This operation sets the voltage, current and OVP to the programmed values for the set period of time during the sequence step. Navigate to each editable item to input values for Voltage, Current, Overvoltage Protection and duration.

Ramp V, Ramp Voltage: This operation allows the user to ramp the output voltage from an initial, or start, value (Vi) to a final, or stop, value (Vf) over the time period specified. Internally the unit uses Vi, Vf and the time to calculate an appropriate ramp function to drive the output during the test step. Use the NavPad to set the OVP, initial Voltage (Vi), final Voltage (Vf), Current limit, and duration.

Ramp I, Ramp Current: This operation allows the user to ramp the output current from an initial, or start, value (Ii) to a final, or stop, value (If) over the time period specified. Use the NavPad to set the OVP, initial Current (Ii), final Current (If), Voltage limit, and duration.

CP Mode, Constant-Power Mode: This operation is similar to the V/I Mode, except it sets the supply in a constant-power mode (See Section 3.8.5). Use the NavPad to input values for OVP, Voltage limit, Current limit, Constant Power setting and duration.

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Repeat: This operation returns to the beginning of the test cycle (this could be a prior test sequence or the beginning of the current test sequence, depending on the number of branches and subcalls used in the affected sequences) and repeats all previously executed steps a single time. Once executed, the sequence continues to execute all remaining steps after the Repeat command. To repeat the preceding steps more than once, use the Loop operation.

Subcall: This operation calls another test that runs as a sub-sequence. If that sub-sequence includes a Return command, execution of the primary sequence resumes at the step following the Subcall step. Use the NavPad to scroll to the desired Test name and change as appropriate.

Return: This operation causes execution to resume at the step immediately following the most recent Subcall. When occurring in a primary sequence, without a prior Subcall, Return stops execution of the test sequence. Return is one of only three operations that may be used in step 21 of a test sequence.

Loop: This operation causes the unit to repeat all steps between the Loop operation and the Next operation for the specified number of counts (maximum of 65,535). Use the NavPad to set the Count for the total number of loops.

Use the Next operation after the last step to be repeated. Once the Loop has completed the set number of counts,

the unit will continue to execute the remainder of the sequence.

Next: Next is used at the end of a Loop to signify the end of the looped sequence.

If Next is not preceded by the Loop operation, this is an INVALID condition. If the program encounters the Next command under these conditions, the sequence will abort and the output power to the terminals will be disabled.

Stop: Stops the test sequence execution and retains the last programmed output value. The Stop operation may be used in step 21 of a sequence.

Goto: This operation allows the sequence to exit the existing test sequence and begin another test sequence. Goto is used to string together multiple sequences for a single test. The Goto operation may be used in step 21 of a sequence.

Pause: This operation suspends execution of the sequence and waits for operator input to press either the

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Burn-in Sequence

0 5 10 15 20 25 30

Time in seconds

Output Voltage

Resume key to continue the sequence or the Stop key to end the sequence.

SEQUENCING EXAMPLE

The following provides an example of programming and running a test sequence.

A typical burn-in sequence requires the voltage to the device-under-test (DUT) to ramp up to a nominal voltage, allow the unit to soak at that voltage

for a period of time, then ‘bump’ up that voltage to another level, soak, etc.,

then return the output back to zero. In some cases, an on/off power cycle sequence may also be required. Figure 3-11 provides a graphical representation of this example burn-in sequence.

Figure 3-11. Burn-in Sequence Example

To begin programming a sequence it is important to know the exact settings for each step of the sequence. In this case, two sequences will be programmed: the first being the up/down ramp sequence, and the second the on/off sequence. The two will be strung together using a Goto command.

The example sequence will perform the following:

Sequence 1 – Up/Down Ramp

Step 1 – Ramp the output voltage from 0 V to 20 V over a 1 s period Step 2 – Hold the voltage at 20 V for 2 s Step 3 – Ramp the voltage from 20 V to 40 V over a 500 ms period Step 4 – Hold the voltage at 40 V for 2.5 s Step 5 – Ramp the voltage from 40 V to 0 V over a 2 s period Step 6 – Hold the voltage at 0 V for 2 s Step 7 – Go to sequence 2

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Sequence 2 – On/Off Loop

Step 1 – Begin a loop and set the count to 5 Step 2 – Turn on the voltage to 40 V for 2 s Step 3 – Turn off the voltage for 2 s Step 4 – Execute the Next loop until all 5 are complete Step 5 – Stop the sequence

Run the sequence. To program these sequences, do the following:

Sequence 1 – Up/Down Ramp

From the Home Menu Page 1, select F3 to enter the main Sequence Menu. Use the NavPad up/down to select the sequence (Test ID) labeled TEST01. Press F4 (Del Test) to reset all steps in TEST01 to a NOP condition. This establishes a known state for this sequence. Press F3 to enter the Sequence Step menu.

Step 1 – Ramp the output voltage from 0 V to 20 V over a 1 s period

From the Sequence Step menu, use the NavPad to set the test step to the first step, TEST01-1. Use the NavPad to set the operation to Ramp V mode. Set OVP to an appropriately high level (60 V for this example), Vi to 0 V, Vf to 20 V and current to a nominal 10 A (for this example we assume there is no load – or a very light load – connected to the output). Set the time duration to 1 s or (0:00:01:000). Once these values are set, press the F1 key to copy this setup into the copy buffer for later use.

Step 2 – Hold the voltage at 20 V for 2 s

Use the NavPad to change to the next step (TEST01-2). Select the V/I Mode operation and set the OVP to 60 V, voltage to 20 V, current to 10 A and time duration to 2 s.

Step 3 – Ramp the voltage from 20 V to 40 V over a 500 ms period

Use the NavPad to change to the next step (TEST01-3). Use the F2 key to paste in a copy of the previously saved Ramp V step. Make changes to this step by changing Vi to 20 V, Vf to 40 V and the time duration to 500 ms (0:00:00:500)

Step 4 – Hold the voltage at 40 V for 2.5 s

Use the NavPad to change to the next step (TEST01-4). Select the V/I Mode operation and set the OVP to 60 V, voltage to 40 V, current to 10 A and time duration to 2.5 s.

Step 5 – Ramp the voltage from 40 V to 0 V over a 2 s period

Use the NavPad to change to the next step (TEST01-5). Use the F2 key to paste in a copy of the previously saved Ramp V step. Make changes to this step by changing Vi to 40 V, Vf to 0 V and the time duration to 2 s.

Step 6 – Hold the voltage at 0 V for 2 s

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Use the NavPad to change to the next step (TEST01-6). Select the V/I Mode operation and set the OVP to 60 V, voltage to 0 V, current to 10 A and time duration to 2 s.

Step 7 – Go to sequence 2

Use the NavPad to change to the next step (TEST01-7). Select the Goto operation and set the next step to TEST02. Press the ESC or Menu key to move to the Save Sequence screen and press F1 for Yes.

Sequence 2 – On/Off Loop

From the Home Menu Page 1, select F3 to enter the main Sequence Menu. Use the Navigation arrows to select the sequence labeled TEST02. Press F4 (Del Test) to reset all steps in TEST02 to a NOP condition. Press F3 to enter the Sequence Step menu.

Step 1 – Begin a loop and set the count to 5

Use the NavPad to change to the first step (TEST02-1). Select the Loop operation and set the count to 5.

Step 2 – Turn on the voltage to 40 V for 2 s

Use the NavPad to change to the next step (TEST02-2). Select the V/I Mode operation and set the OVP to 60 V, voltage to 40 V, current to 10A and time duration to 2 s. Press F1 to copy this step to the copy buffer.

Step 3 – Turn off the voltage for 2 seconds

Use the NavPad to change to the next step (TEST02-3). Press the F2 key to paste the previously saved step into this step. Set the voltage to 0 V, all other settings remain the same.

Step 4 – Execute the Next loop until all 5 are complete

Use the NavPad to change to the next step (TEST02-4). Select the Next operation.

Step 5 – Stop the sequence

Use the NavPad to change to the next step (TEST02-5). Select the Stop operation. Press the ESC or Menu key to move to the Save Sequence screen and press F1 for Yes.

This completes programming of the sequences. To run this sequence, from Home Menu Page 1, press F3 to enter the main

Sequence menu. Select TEST01 test sequence and press F1 to start the sequence. The display will show progress of the sequence and should complete in approximately 30 s.

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Constant Power Mode

Current

Voltage

V limit

I limit

Constant Power setting

3.8.5 Constant-Power Mode

The Constant-Power Mode allows the supply to regulate the output to a constant power setting as opposed to the more common constant voltage or constant current modes of operation (see Section 3.2). (

intended primarily for loads with response times greater than approximately 10 ms). While in this mode, the supply will continually adjust the voltage and

current levels to attempt to maintain a constant power to the load. In order to provide additional protection for the load, voltage, and current limits may be set while in the Constant-Power mode. If the unit cannot regulate to the Constant Power setting due to load conditions, it will regulate either at the voltage or current limit depending on the load demand. See Figure 3-12.

Note:

This mode is

Figure 3-12. Constant-Power Example

To access the Constant Power Setup menu, press the F4 key from Home Menu Page 1. Navigate to each editable item and enter the appropriate values. Press F3 to execute (the display jumps to Constant Power screen) or F4 to abort (the display returns to Home Menu Page 1).

From Constant Power screen, the user may either edit the limits again or exit Power mode. F3 jumps to Constant Power Edit screen, and after inputting new values, press F3 to make those changes effective and jump back to Constant Power Screen, or press F4 to ignore the changes and jump to Constant Power Exit.

From Constant Power Exit, F1 cancels the command to exit and jumps back to Constant Power screen, or F4 exits Constant Power and jumps to Home Menu Page 1 with the Voltage, Current, and OVP values as set. (See Menu Map, Section 3.7.8).

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3.8.6 Home Timeout

The display jumps to this screen when the system has been idle for 30 seconds. Press Escape or F4 to return to Home Menu Page 1.

3.8.7 Display Brightness

Navigate from Home Menu Page 2, F1; use NavPad to dim or increase the brightness. F1 saves the adjusted setting for the remainder of the session and for future power-ups. F4 maintains the setting for the remainder of the session and returns the brightness to its previously saved level at next power-up.

3.8.8 Lock Key

To prevent changes due to accidental pressing of the keys, Lock the keys from Home Menu Page 2, F2. This screen appears until F4 is pressed; a confirmation screen will appear with instructions to press Enter to unlock keys (see Section 3.7.12, Other Screens) before returning to Home Menu.

NOTE:

or Constant-Current modes.

Lock Key only works while in the Constant-Voltage

3.8.9 Language

The Language submenu allows the user to change the default language for the menu selections. To select this menu, from Home Menu Page 2 press F3 to go to the Language Menu and select a language to work in. Pressing F1 will save the selection and exit the Language Menu. The next time the unit is powered up it will be in the last saved language. Pressing F4 will keep the selected language only for the remainder of the session and will revert to the previously saved language at next power-up.

FOREIGN LANGUAGE

If the unit is set to a language foreign to the user, press the escape key until Home Menu Page 1 appears. (Even in a foreign language, the Voltage and Current values will still display: value with the letter V and value with the letter A, respectively. Also, there will be only one inter-screen navigation arrow, which is located at the bottom of the

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screen). Use the NavPad to scroll down to Home Menu Page 2 (there will be two inter-screen navigation arrows, one at the top and one at the bottom of the screen). Press F3, which jumps to the Language Menu, and then use the NavPad to scroll to the user's native language.

3.8.10 Info

The Supply Information screen shows the date that the unit was last calibrated, Model Number and Serial Number of the unit, and version of the software. To access this screen, from Home Menu Page 2 press F4.

3.8.11 Remote

Remote, F1, provides screens for either the Ethernet option or the GPIB option, described in the following subsections.

ETHERNET

The Ethernet Remote Menu displays the Ethernet MAC address of the power supply, which cannot be edited. Access the menu from Home Menu Page 3, F1 key. This menu also displays in the IP IN USE: line, the IP address presently in use from either a static IP setting or from the DHCP server, depending on how assigned. The Baud Rate is editable via the NavPad; changing it here changes the rear panel RS-232 SCPI baud rate. Pressing the F2 key will save the set baud rate. The initial factory setting is 19200.

LXI

The LXI submenu (F3 from the Remote Menu) displays two settings required by the LXI requirements.

PING Response: enables or disables the power supply’s response to a ping packet sent from a remote Ethernet host. To change the setting to either ENABLED or DISABLED, move the editing arrows to the PING Response: line by pressing NavPad left/right, and then change the setting by pressing NavPad up/down. Press F1 to Cancel the change and return to the Remote Menu screen, or press F4 to Save the changed setting.

Identification: controls the LAN LED on the power supply’s rear panel. ENABLED causes the LAN LED to flash for visual identification. DISABLED causes the LAN LED to be steady-lit

to indicated the power supply’s connected status. To change

the setting, move the editing arrows to the Identification field by

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pressing NavPad left/right, and then change the setting by pressing NavPad up/down. Press F1 to Cancel the change and return to the Remote Menu screen, or press F4 to Save the changed setting.

ETHERNET

The Ethernet submenu (F4 from the Remote Menu) displays the Primary (Pri Config) and Secondary (Sec Config) Ethernet configurations, both of which are editable. It also provides further submenus to change the Server Listener Port (F3) and the Static IP address (F4).

The Primary configuration is attempted at power-up, and if it fails, the system

defaults to the Secondary configuration. However, both setting “DHCPacquired” and selecting “Auto IP Enabled” together in the Primary

configuration, prevents the power supply from trying the Secondary configuration.

Useful configurations are described as follows:

Pri Config: STATIC IP Sec Config: DHCP

At power-up the power supply will assign itself the configured static IP address. If no other device is using the IP address, the power supply continues with that static IP address. If some other device is using that address, the power supply will move to Secondary and attempt to acquire an IP address from a DHCP server repeatedly until it gets an address.

Pri Config: STATIC Sec Config: DHCP+AUTOIP

At power-up the power supply will assign itself the static IP address. If no other device is using the IP address, the power supply continues with that static IP address. If some other device is using that address, the power supply will move to secondary and attempt to acquire an IP address from a DHCP server. If it cannot find a DHCP server to assign an address, it will assign itself a link-local address. If no other device is using that link-local address it will use it for 5 minutes minimum. At that time, if it is already in communication with some other device, it will hold onto that link-local address until the communication is finished and then retry DHCP. Then, if DHCP is not available, the power supply will revert to the last successful link-local address for another 5 minutes minimum.

Pri Config: DHCP Sec Config: STATIC

At power-up the power supply will attempt to acquire an IP address from a DHCP server. If it cannot find a DHCP server to assign an address, the power supply will move to Secondary and assign itself the static IP address. If no other device is using the IP address, the power supply continues with that static IP address. If some other device is using the static IP address, the power supply will move back to Primary and start the entire operation again.

Pri Config: DHCP+AUTOIP Sec Config: will not be used with the Pri Config, above

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At power-up the power supply will attempt to acquire an IP address from a DHCP server. If it cannot find a DHCP server to assign an address, it will assign itself a link-local address. If no other device is using that link-local address, it will use it for 5 minutes minimum. At that time, if it is already in communication with some other device, it will hold onto the link-local address until the communication is finished and then retry DHCP. If DHCP is not available, the power supply will revert to the last successful link-local address for another 5 minutes minimum.

PORT

The Server Port Menu is used to set the network TCP/IP socket listening port. Valid values are 1025 to 65535. The factory default setting is 9221. To change, press NavPad up/down or use the numeric keys to enter specific values. Press F4 to save the change or press F1 to return to the Ethernet menu without changing anything.

STATIC IP CONFIGURATION

The Static IP menu allows manual setting not only of the IP address, but also subnet mask, gateway and Domain Name Server (DNS) server. The four IP octets in each field are edited one at a time. Navigate to each octet by pressing NavPad left/right, then change the value by either pressing NavPad up/down or by entering a specific value with the numeric keys.

IP: input any standard IP address. (Factory setting is 192.168.0.200). Press F4 to save the changes or press F1 to return to the Ethernet menu without changing anything.

MASK: input a value that identifies which network segment your power supply is on, consisting of 4 whole numbers, each ranging from 0 through 255, separated by periods. (Factory setting is 255.255.255.0, a class-C network subnet mask). Press F4 to save the change or press F1 to return to the Ethernet menu without changing anything.

GATE: input the IP Address of any gateway that stands between the instrument and any other network entities that communicate with the power supply. (No factory setting). Press F4 to save the change or press F1 to return to the Ethernet menu without changing anything.

DNS: input an IP address for the Domain Name System (DNS) server. Press F4 to save the change or press F1 to return to the Ethernet menu without changing anything.

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GPIB AND RS232 Note: For Standard SGI without Ethernet

The Remote Menu for GPIB option or RS232 option (Home Page 3, F1) allows setting of the GPIB address and the baud rate for the RS232 interface. Use the NavPad to set the GPIB address from 1 to 30, and the RS-232 baud rate from 2400 to 19200. Pressing F1 saves the new values in non-volatile memory so that they will be remembered after power down. Pressing F4 keeps the selected values only until the unit is power down; then, at next power up, the previously saved settings will be restored.

REMOTE OPERATION SCREENS

If the unit is being controlled remotely via Ethernet, GPIB or RS-232 interface, special screens may appear during operation. The following describes those displays:

 Remote Mode Primary display shows the actual values

for Volts and Watts. F4 jumps to Home Timeout screen.

 Remote Mode Power display shows the set points on

the first line, actual values for Voltage and Current on the second line, and at the bottom, the actual value for Watts with a bar graph of its percent of full-scale power. F4 jumps to the Constant Power screen.

 Remote Mode Sequence display shows what sequence

is running. F4 jumps to the local Sequence Run screen.

3.8.12 System

The System submenu allows the user to display the total system current when the unit is being paralleled with other SG series supplies.

From Home Menu Page 3, press F2 to enter the System Menu. Determine the Total System Current by adding the maximum current rating of all supplies in parallel. Use NavPad or the KeyPad "0-9" to enter the appropriate value. F3 resets Total System Current to the supply default value; F4 keeps the displayed value and jumps to Home Menu Page 1.

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3.8.13 Warning Screens

There are two warning screens that may appear during the course of operation:

HARD FAULT

Hard Fault warns that a hardware fault has occurred in a power module, such as an overtemperature, undervoltage of AC input, or converter failure. These conditions might clear themselves, however, if they continue to occur after pressing the F4 (ClrFault) key, contact the factory for service assistance.

OVP FAULT

OVP Fault occurs when the output voltage of the supply exceeds the OVP setting. When this occurs the output is disabled, and voltage and current output go to 0. To clear the display, press F1 (Clr OVP). The display will return to Home Menu Page 1, and the output will remain disabled.

Note:

re-enabling the output.

It is important to correct the condition that caused the OVP, prior to

3.9 Remote Analog Control Connector (J1)

The Analog Control connector of the Remote Analog Interface on the rear panel allows the unit to be configured for different operating configurations: front panel (local) and remote programming of voltage, current, and OVP, voltage and current monitoring, output enable/disable, etc. Refer to Figure 3-13 for the connector pin-out diagram. The setup and operating requirements of each configuration are provided in Sections 3.10 through 3.13.3.

The SGI also has the capability of providing summing of remote analog input with the set values on the front panel (or programmed values via the digital interface) for voltage, current and OVP. This capability provides a means to modulate a set value with the signal on the voltage, current and OVP analog input. If the user only desires to control the unit with the analog input, all the front panel values (V/I/OVP) or digital settings should be set to zero.

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CAUTION! If standard, Remote Non-Isolated Analog Interface programming is used, the programming return (J1-6 and J1-24) is at the same potential as the negative output terminal of the power supply (not isolated). Proper connection should be made to signal returns with respect to input programming equipment. Improper connection might result in ground/return loops and, as a result, internal power supply damage might occur; output current could then flow by way of the external connection to the J1 common (J1-6 and J1-24). Refer to Table 3–5.

CAUTION!

The Remote Isolated Analog Interface option is not intended to allow operation of the power supply at excessive voltages. Operation of Isolated Analog Interface signals should be at SELV safety voltage conditions to chassis ground. Refer to Section 1.2.2 for maximum terminal voltages.

REMOTE ANALOG ISOLATED INTERFACE CONTROL (OPTION)

The Remote Isolated Analog Interface control uses the same Analog Control connector (J1) as the standard interface. This option fully isolates remote control signals and allows control of units not connected to a common ground. Control ground is isolated from output power (output negative terminal), which protects against potential damage from systems with high electrical noise or large ground loop currents.

Note:

are not available with this option; see Table 3–5 for details.

Some standard, Non-Isolated Analog Interface programming signals

Figure 3-13. Analog Control Connector (J1) Pin-Out

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Reference

Electrical

Parameters

Functional Description

ISO

ON/OFF

Zin ~ 6 k in

series with anode

of opto-isolator

LED

Isolated remote control input for output on/off with an applied AC/DC voltage source. A positive (+) 6-120 VDC or an AC input of 12- 240 VAC will enable (turn-on) the output of the supply. This control input is optically isolated from the output power negative terminal of the power supply (up to 500 VDC). Signal return is Pin J1-2 (ISO RTN). See Section 3.13.

ISO RTN

—

Isolated signal return for on/off control using Pins J1-1 and J1-14. Optically isolated from the output power negative terminal of the power supply (up to 500 VDC).

REM OV

SET

Zin ~ 20 k

Control input for remote programming of the overvoltage protection: 0.25-5.5 VDC = 5-110% of full-scale output voltage. Reset of an OVP condition is possible by applying an 10.5-13.3 VDC signal for 7 seconds. Signal return is Pin J1-6 (COM). Circuit is electrically connected to the output power negative terminal. See Section 3.12.

VP RTN

Zin ~ 10 k

Voltage programming signal return to be used with Pins J1-9, J1-15 or J1-21; also must be externally connected to Pin J1-6 (COM) signal return when voltage programming is utilized. Circuit is electrically connected to the output power negative terminal.

ON/OFF

Zin ~ 10 k

pull-up to 15 VDC

Remote control input for output on/off: switch/relay contact closure or direct short-circuit from this terminal to Pin J1-6 (COM) signal return will enable (turn-on) the output of the supply; remote circuit must sink up to 1.5 mA from 15 VDC to enable. Circuit is electrically connected to the output power negative terminal. See Section 3.13.

COM †

—

Signal return. Internally connected to Pin J1-24. Circuit is electrically connected to the output power negative terminal.

I MON

Zout ~ 100 

Monitor signal for output current: 0-10 VDC = 0-100% of fullscale output current. Minimum recommended load resistance is 100 kCircuit return is Pin J1-6 (COM). Circuit is electrically connected to the output power negative terminal.

V SET *

Zout ~ 100 

Monitor signal for front panel voltage potentiometer setpoint: 0-5 VDC = 0-100% of full-scale setpoint. Minimum recommended load resistance is 100 k Signal return is Pin J1-6 (COM). Circuit is electrically connected to the output power negative terminal.

VP 5V

Zin ~ 10 k

Control input for remote voltage programming using a voltage source: 0-5 VDC = 0-100% of full-scale output voltage. Do not exceed an input of 13.3 VDC. Signal return is Pin J1-4 or Pin J1-20 (VP RTN). Circuit is electrically connected to the output power negative terminal. See Section 3.11.

IP 5V

Zin ~ 10 k

Remote control input for current programming using a voltage source: 0-5 VDC = 0-100% of full-scale output current. Do not exceed an input of 13.3 VDC. Signal return is Pin J1-23 or Pin J1-25 (IP RTN). Circuit is electrically connected to the output power negative terminal. See Section 3.10.

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Reference

Electrical

Parameters

Functional Description

ISET *

Zout ~ 100 

Monitor signal for front panel current potentiometer setpoint: 0-5 VDC = 0-100% of full-scale setpoint. Minimum recommended load resistance is 100 k Signal return is Pin J1-6 (COM). Circuit is electrically connected to the output power negative terminal.

Not Used

ISO

TTL/CMOS

Zin ~ 900in

series with anode

of opto-isolator

LED

Isolated remote control input for output on/off with a logic signal: a logic-high, 5 VDC TTL/CMOS signal will enable (turn-on) the output of the supply, and a logic-low signal disables (turns off) the output. This control input is optically isolated from the output power negative terminal of the power supply (up to 500 VDC). Signal return is Pin J1-2 (ISO RTN). See Section 3.13.

VP 10V

Zin ~ 20 k

Remote control input for voltage programming using a voltage source: 0-10 VDC = 0-100% of full-scale output voltage. Do not exceed an input of 25 VDC. Signal return is Pin J1-4 or Pin J1-20 (VP RTN). Circuit is electrically connected to the output power negative terminal. See Section 3.11.

IP 10V

Zin ~ 20 k

Remote control input for current programming using a voltage source: 0-10 VDC = 0-100% of full-scale output current. Do not exceed an input of 25 VDC. Signal return is Pin J1-4 or Pin J1-20 (VP RTN). Circuit is electrically connected to the output power negative terminal. See Section 3.10.

FAULT

Zout ~ 1 k

Output signal for indicating a fault state: a logic-high state (approximately +10 VDC) indicates a fault has occurred in a power module, such as overtemperature, undervoltage of AC input, or converter failure; front panel Fault LED will also be lit. Signal return is Pin J1-6 (COM). Circuit is electrically connected to the output power negative terminal.

S/D FAULT

Zout ~ 100 

Output signal for shutdown/fault state: a logic-high state indicates shutdown produced by an OVP condition, PowerOn-Reset (POR), remote disable, or housekeeping supply fault. An 8 VDC minimum output signal is provided into a load of 10 kload. Signal return is Pin J1-6 (COM). Circuit is electrically connected to the output power negative terminal. See Section 3.13.3.

V MON

Zout ~ 100 

Monitor signal for output voltage: 0-10 VDC = 0-100% of fullscale output voltage. Minimum recommended load resistance is 100 kCircuit return Pin J1-6 (COM). Circuit is electrically connected to the output power negative terminal.

VP RTN

Zin ~ 10 k

VP RES *

1mA current

source with compliance

Current source of 1 mA for remote voltage programming using a resistance connected to signal return Pin J1-4 or Pin J1-20 (VP RTN): 0-5 kΩ = 0-100% of full-scale output

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Calibration and Verification Sorensen SGI Series

Reference

Electrical

Parameters

Functional Description

voltage of

~ 10.8 V

voltage. Circuit is electrically connected to the output power negative terminal. See Section 3.11.

IP RES *

1mA current

source with compliance

voltage of

~ 10.8 V

Current source of 1 mA for remote current programming using a resistance connected to signal return Pin J1-23 or Pin J1-25 (IP RTN): 0- 5 kΩ = 0-100% of full-scale output current. Circuit is electrically connected to the output power negative terminal. See Section 3.10.

IP RTN

Zin ~ 10 k

Current programming signal return which is to be used with Pins J1-10, J1-16 or J1-22; also must be externally connected to Pin J1-6 (COM) signal return when current programming is utilized. Circuit is electrically connected to the output power negative terminal.

COM †

—

Signal return. Internally connected to Pin J1-6. Circuit is electrically connected to the output power negative terminal.

IP RTN

Zin ~ 10 k

†

With the option, Remote Isolated Analog Interface control, the control signal return is isolated from the

output power negative terminal. See Section Error! Reference source not found. and Section 3.15.

Signals not available with the option, Remote Isolated Analog Interface control.

Table 3–5. Analog Control Connector (J1), Designations and Functions

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3.10 Remote Current Programming

Remote current programming is summed with the front panel or digital setting; see Section 3.9. Remote current programming is used for applications that require the output current be programmed (controlled) from a remote instrument. An external resistance or external voltage source may be used as a programming device. When using remote current programming, a shielded, twisted-pair cable is recommended to prevent noise interference to programming signals.

3.10.1 Remote Current Programming by Resistance

The resistance-programming coefficient for output current is (100% rated output current) / 5 kΩ, with input at Pin J1-22 (IP RES) and return to Pin J1-23 (IP RTN). An internal current source, factory-set at 1 mA, from Pin J1-22 (IP RES) is utilized to drive the resistance. This produces a transfer function for output current, as follows:

Iout = R * (100% rated output current) / 5 kΩ), with R in ohms. If multiple switches or relays are used to select resistors to program different

current levels, make-before-break contacts are recommended.

Note:

programming return Pin J1-23 (IP RTN), must be connected directly to, or within ±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-14 for connection requirements.

If an external resistance is used for remote programming, the current

Figure 3-14. Remote Current Programming Using Resistance

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23 IP RTN

COM 6

16 IP 10V

IP 5V 10

0-5 VDC VOLTAGE SOURCE

0-10 VDC VOLTAGE SOURCE

3.10.2 Remote Current Programming by Voltage Source

Two inputs are provided for remote voltage-programming of the output current: 5 VDC full-scale and 10 VDC full-scale. The DC voltage source is connected between Pin J1-10 (IP 5 V) for 5 VDC source, or Pin J1-16 (IP 10 V) for 10 VDC source, and the return Pin J1-23 (IP RTN).

The corresponding voltage-programming coefficients for output current are (100% rated output current) / 5 VDC, or (100% rated output current) /10 VDC, from the respective inputs with return to Pin J1-23 (IP RTN). This produces transfer functions for output current, as follows:

Iout = Vdc * (100% rated output current) / 5 VDC), with Vdc in volts, or Iout = Vdc * (100% rated output current) / 10 VDC), with Vdc in volts.

Note:

The return Pin J1-23 (IP RTN) must be referenced directly to, or within ±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-15 for connection requirements.

Figure 3-15. Remote Current Programming Using 0-5 VDC or 0-10 VDC Source

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20 VP RTN

21 VP RES

COM 6

0-5 Kohms PROGRAM

3.11 Remote Voltage Programming

Remote voltage programming is summed with the front panel or digital setting; see Section 3.9. Remote voltage programming configuration is used for applications that require the output voltage be programmed (controlled) from a remote instrument. An external resistance or external voltage source may be used as a programming device. When using remote voltage programming, a shielded, twisted-pair cable is recommended to prevent noise interference to programming signals.

3.11.1 Remote Voltage Programming by Resistance

The resistance-programming coefficient for output voltage is (100% rated output voltage) / 5 kΩ, with input at Pin J1-21 (VP RES) and return to Pin J1-20 (VP RTN). An internal current source, factory-set at 1 mA, from Pin J1-21 (VP RES) is utilized to drive the resistance. This produces a transfer function for output voltage, as follows:

Vout = R * (100% rated output voltage) / 5 kΩ), with R in ohms.

Note:

If an external resistance is used for remote programming, the voltage programming return Pin J1-20 (VP RTN) must be connected directly to, or within ±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-16 for connection requirements.

Figure 3-16. Remote Voltage Programming Using Resistance

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20 VP RTN

COM 6

15 VP 10V

VP 5V 9

0-5 VDC VOLTAGE SOURCE

0-10 VDC VOLTAGE SOURCE

3.11.2 Remote Voltage Programming by Voltage Source

Two inputs are provided for remote voltage-programming of the output voltage: 5 VDC full-scale and 10 VDC full-scale. The DC voltage source is connected between Pin J1-9 (VP 5 V) for 5 VDC source, or Pin J1-15 (VP 10 V) for 10 VDC source, and the return terminal J1-20 (VP RTN).

The corresponding voltage-programming coefficients for output voltage are (100% rated output voltage) / 5 VDC, or (100% rated output voltage) /10 VDC, from the respective inputs with return to Pin J1-20 (VP RTN). This produces transfer functions for output voltage, as follows:

Vout = Vdc * (100% rated output voltage) / 5 VDC), with Vdc in volts, or Vout = Vdc * (100% rated output voltage) / 10 VDC), with Vdc in volts.

Note:

The return terminal (VP RTN) must be referenced directly to, or within ±3 V, of the circuit common, Pins J1-6 and J1-24. See Figure 3-17 for

connection requirements.

Figure 3-17. Remote Voltage Programming Using 0-5 VDC or 0-10 VDC Source

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