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SL80-50/208+GPIB
User Manual
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Magna-Power SL80-50/208+GPIB, SL1000-1.5/UI User Manual

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SL Series Documentation
Release 1
Magna-Power Electronics, Inc.
Jan 19, 2022
CONTENTS
1 Preface 1
1.1 Contact Magna-Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.3 Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 User Manual Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.6 U.S. Government Rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.7 WEEE Directive 2002/96/EC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.8 Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.9 Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.10 Additional Help and Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Product Introduction 7
2.1 Features at a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.1 Output Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.2 Programming Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.3 System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 Model Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.4 Dimensional Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.5 Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.6 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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2.7 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3 Installation 29
3.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.2 Rack Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.3 AC Input Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.4 DC Output Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.5 Remote Sense Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.6 Electrical Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4 Features and Functions 39
4.1 Output Regulation States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.2 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.3 Protection and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
5 Operation: Parallel and Series 47
5.1 Parallel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.2 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6 Operation: Front Panel 53
6.1 Setting Trip Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.2 Configuring Set Point Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
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6.3 Configuring Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7 Operation: External User I/O 61
7.1 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.2 Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7.3 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
7.4 Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.5 Reference Signals and Grounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
8 Operation: Computer Programming 73
8.1 Communications Validation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
8.2 RS232 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8.3 LXI TCP/IP Ethernet Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
8.4 IEEE-488 GPIB Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
9 Calibration 83
9.1 Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
9.2 Driver Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10 SCPI Command Set 85
10.1 SCPI Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.2 SCPI Command Reference List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
10.3 CALibration Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
10.4 CONFiguration Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
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10.5 MEASure Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
10.6 MODulation Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
10.7 OUTPut Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
10.8 SOURce Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
10.9 STATus Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
10.9.6 *RST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.9.7 *SRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10.9.8 *STB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.9.9 STATus:OPERation:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.9.10 STATus:QUEStionable:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10.10 SYSTem Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.10.1 SYSTem:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.10.2 SYSTem:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
10.10.3 SYSTem:COMMunicate:NETwork:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.10.4 SYSTem:COMMunicate:NETwork:MAC? . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.10.5 SYSTem:COMMunicate:NETwork:SER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.10.6 SYSTem:COMMunicate:NETwork:ADDRess . . . . . . . . . . . . . . . . . . . . . . . . . 103
10.10.7 SYSTem:COMMunicate:NETwork:GATE . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.10.8 SYSTem:COMMunicate:NETwork:SUBNet . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.10.9 SYSTem:COMMunicate:NETwork:PORT . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
10.10.10SYSTem:COMMunicate:NETwork:HOSTname . . . . . . . . . . . . . . . . . . . . . . . . 105
10.10.11SYSTem:COMMunicate:NETwork:DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
10.10.12SYSTem:COMMunicate:GPIB:VERSion . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
10.10.13SYSTem:COMMunicate:GPIB:ADDRess . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
10.11 TRIGger Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
10.11.1 TRIGger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
10.11.2 INITiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
10.11.3 ABORt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
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CHAPTER
ONE

PREFACE

Thank you for choosing a Magna-Power Electronics product. This document provides user, service, and programming information the SL Series MagnaDC programmable DC power supply. If you have any suggestions or feedback for this document, please contact Magna-Power at feedback@magna-power.com.
1.1 Contact Magna-Power
Magna-Power support can be contacted for service, technical support, or spare parts:
• By Phone: +1-908-237-2200
• By Email: support@magna-power.com
Visit magna-power.com/support for more support resources and information about contacting Magna-Power world­wide.
1.2 Safety Notice
The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Neither Magna-Power Electronics nor any of the associated sales organizations accept responsibility for personal injury, consequential injury, loss, or damage resulting from improper use of the equipment and accessories.
Installation and service must be performed only by properly trained and qualified personnel who are aware of dealing with electrical hazards. Ensure that the AC power line ground is properly connected to the MagnaDC power supply chassis. Furthermore, other power grounds, including those connected to application maintenance equipment, must be grounded for both personnel and equipment safety.
This product is a Safety Class 1 instrument, provided with a protective earth terminal. The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions.
Warning: Residiual voltage. Lethal voltages may be present inside the MagnaDC power supply even when the AC input voltage is disconnected. Only properly trained and qualified personnel should remove covers and access the inside of the MagnaDC power supply.
During normal operation, the operator does not have access to hazardous voltages within the product’s chassis. De­pending on the application, high voltages hazardous to human safety may be present on the DC power terminals. Ensure that the DC power cables are properly labeled as to the safety hazards and that any inadvertent contact with hazardous voltages is eliminated.
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Do not install substitute parts or perform unauthorized maintenance on the product.
These operating instructions form an integral part of the equipment and must be available to the operating personnel at all times. All the safety instructions and advice notes are to be followed.
Warning: General. Do not use this product in any manner not specified by the manufacturer. The protective features of this product may be impaired if it is used in a manner not specified in the operating instructions.
Warning: Environmental Conditions. Never use the instrument outside of the specified environmental condi­tions described in the Environmental Characteristics of the specifications.
Warning: Ground the Instrument. This product is provided with protective earth terminals. To minimize shock hazard, the instrument must be connected to the AC mains through a grounded power cable, with the ground wire firmly connected to an electrical ground (safety ground) at the power outlet. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in injury or death.
Warning: Before Applying Power. Verify that all safety precautions are taken. All connections must be made with the unit turned off, and must be performed by qualified personnel who are aware of the hazards involved. Improper actions can cause fatal injury as well as equipment damage. Note the instrument’s external markings described under “Safety Symbols”.
Warning: Do Not Operate in an Explosive Atmosphere. Do not operate the instrument in the presence of flammable gases or fumes.
Warning: Do Not Remove the Instrument Cover. Only qualified, service-trained personnel who are aware of the hazards involved should remove instrument covers. Disconnect the power cable and any external circuits before removing instrument covers.
Warning: Do Not Modify the Instrument. Do not install substitute parts or perform any unauthorized mod­ification to the product, except with the direction of Magna-Power support personnel. Return the product to a Magna-Power authorized service center for repair.
Warning: In Case of Damage. Instruments that are not functioning correctly, appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel.
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1.3 Safety Symbols
Caution. Refer to documentation or notation for more information before proceeding.
Caution, risk of electric shock. Refer to documentation or notation for more information before pro­ceeding.
SL Series Documentation, Release 1
Direct current
Alternating current
Caution, hot surface.
Earth ground terminal.
The ETL mark, which is a registered trademark of Intertek.
The CE mark, which is a registered trademark of the European Community.
1.4 Limited Warranty
The following is made in lieu of all warranties expressed or implied.
Magna-Power Electronics, Inc. warranties its products to be free of manufacturing defects for a period of two years from date of original shipment from its factory. Magna-Power Electronics, Inc. will repair, replace, or refund the purchase price at its discretion, which upon examination by Magna-Power Electronics, Inc., is determined to be defec­tive in material or workmanship, providing such claimed defective material is returned upon written authorization of Magna-Power Electronics, Inc., freight and duties prepaid.
1.3. Safety Symbols 3
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For products failing within the first 30 days of the warranty period, Magna-Power Electronics, Inc. will return the repaired product at its expense using a standard ground shipping method; after 30 days of the warranty period, the repaired product will be returned at the customer’s expense using the customer’s requested shipping method.
Damage due to corrosion, customer alterations, excessive dust, extreme environmental or electrical conditions, and/or misuse will be evaluated upon inspection. If inspection reveals that the cause of damage is not due to materials or workmanship, repair of the product will be treated on a non-warranty basis.
All electrical, commercial supply parts, and items not manufactured by Magna-Power Electronics, Inc. shall carry the warranty of the original manufacturer and no more, but under no circumstances to exceed the warranty period. Replacement parts shall be warranted for a period of 90 days. Warranty labor shall only apply if the product, assembly, or part is returned to the factory freight prepaid and insured. Damage or breakage while in transit is not covered by this warranty.
Magna-Power Electronics, Inc. assumes no responsibility to Buyer for labor to diagnose and remove defective product and installation of replacement product. Fur thermore, Magna-Power Electronics, Inc. is not liable to Buyer or to any third party for consequential or incidental damages under any circumstances, whether due to defect in the product, due to delay or failure of delivery, due to a failure of the product to perform as specified, or for any other reason or cause. Buyer and Magna-Power Electronics, Inc. agree that Buyer’s sole remedy and Magna-Power Electronics, Inc.’s sole liability to Buyer is limited to repair, replacement, or refund of the purchase price of the product as described herein, whether Buyer’s claim arises out of contract or in tort.
All claims against the warranty shall be the final determination of Magna-Power Electronics, Inc.
1.5 User Manual Warranty
The material contained in this document is provided “as is,” and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, Magna-Power disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Magna-Power shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or per formance of this document or of any information contained herein. Should Magna-Power and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control.
1.6 U.S. Government Rights
The Software is “commercial computer software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pur­suant to FAR 12.212 and 27.405-3 and Department of Defense FAR Supplement (“DFARS”) 227.7202, the U.S. gov­ernment acquires commercial computer software under the same terms by which the software is customarily provided to the public. Accordingly, Magna-Power provides the Software to U.S. government customers under its standard com­mercial license, which is embodied in its End User License Agreement (EULA). The license set forth in the EULA represents the exclusive authority by which the U.S. government may use, modify, distribute, or disclose the Software. The EULA and the license set forth therein, does not require or permit, among other things, that Magna-Power: (1) Furnish technical information related to commercial computer software or commercial computer software documen­tation that is not customarily provided to the public; or (2) Relinquish to, or otherwise provide, the government rights in excess of these rights customarily provided to the public to use, modify, reproduce, release, perform, display, or disclose commercial computer software or commercial computer software documentation. No additional government requirements beyond those set forth in the EULA shall apply, except to the extent that those terms, rights, or licenses are explicitly required from all providers of commercial computer software pursuant to the FAR and the DFARS and are set forth specifically in writing elsewhere in the EULA. Magna-Power shall be under no obligation to update, revise or otherwise modify the Software. With respect to any technical data as defined by FAR 2.101, pursuant to FAR 12.211
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SL Series Documentation, Release 1
and 27.404.2 and DFARS 227.7102, the U.S. government acquires no greater than Limited Rights as defined in FAR
27.401 or DFAR 227.7103-5 (c), as applicable in any technical data
1.7 WEEE Directive 2002/96/EC
This product complies with the Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC marking requirement. The affixed product label (see below) indicates that you must not discard this electrical/electronic product in domestic household waste.
Product Category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as “Monitoring and Control instrumentation” product.
Do not dispose products in domestic household waste.
To return unwanted products, contact Magna-Power Electronics.
1.8 Declaration of Conformity
Magna-Power Electronics declares on its sole responsibility that the SL Series MagnaDC programmable DC power supply complies with the essential requirement of the relevant European Directives, and is eligible to carry the CE mark.
For more details, please review the SL Series Declaration of Conformity.
1.9 Document Conventions
This user’s manual uses several conventions to highlight certain words and phrases and draw attention to specific pieces of information.
Note: Notes are tips, shortcuts or alternative approaches to the task at hand. Ignoring a note should have no negative consequences, but you might miss out on a time saving procedure.
Warning: The warning sign denotes a hazard, calling attention to a procedure or practice. If a warning is not correctly performed or adhered to, it could result in personal injury. Do not proceed beyond a warning sign until the conditions are fully understood or met.
Caution: The caution sign denotes a hazard, calling attention to a procedure or practice. If a caution is not correctly performed or adhered to, it could result in damage to the product. Do not proceed beyond a caution sign until the conditions are fully understood or met.
1.7. WEEE Directive 2002/96/EC 5
SL Series Documentation, Release 1
Source-code listings are also set in mono-spaced roman but add syntax highlighting as follows:
#!/usr/bin/python # -*- coding: utf-8 -*-
from serial import Serial
class Magna(Serial): def __init__(self, port, expected_serial_number=None, log=None):
super(Magna, self).__init__(port, baudrate=19200, timeout=2.0) self.log = log if log else self.magna_log self.write('*CLS\r\n')
1.10 Additional Help and Feedback
For additional help or to provide feedback about the product’s design and features, please contact: sup-
port@magna-power.com.
6 Chapter 1. Preface
CHAPTER
TWO

PRODUCT INTRODUCTION

2.1 Features at a Glance
The SL Series builds on nearly 40 years of power supply innovation at Magna-Power, designed from the ground up to meet the highly reliable power dense demands of ATE system integrators through Magna-Power’s signature current-fed power processing topology. Utilizing state-of-the-art semiconductors and innovative internally designed and manufac­tured heat sinks, the SL Series offers industry-leading 1U (1.75” height) programmable power levels with models at
1.5 kW, 2.6 kW, 4 kW, 6 kW, 8 kW, and 10 kW while still maintaining an ambient operating temperature rating up to 50°C.
A quick summary of the SL Series key features:
• SCPI Remote Programming API
• High Accuracy Measurements
• Master-Slave Functionality
• Remote Sensing
• 37-Pin External User I/O
• RS232 Interface
• Ethernet and GPIB Available
• 0-10V External Analog Inputs
• Programmable Protection Limits
• Fast Transient Response
• Remote Interface Software
• NI LabVIEW™ and IVI Driver
• Interlock Shutdown Input
• Designed and manufactured in the USA
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2.1.1 Output Features
• Robust Power Conversion Topology - All MagnaDC programmable DC power supplies utilize high-frequency
IGBT-based power processing in current-fed topology. This topology adds an additional stage over the conven­tional voltage-fed topology for enhanced control and systemprotection, ensuring that even under a fault condition, the power supply will self-protect. Due to the self-protecting characteristics of this topology, the possibility of fast rising current spikes and magnetic core saturation is elimated. Every power supply is tested at 90% to 125% nominal line to ensure satisfactory operation even under the worst line voltage conditions.
• Fast Transient Response - Quick response to load changes, with 2 ms to recover within ±1% of regulated output
with a 50% to 100% or 100% to 50% step load change.
• Programmable Output Protection - Programmable over voltage trip (OVT) and over current trip (OCT) allow
the user to prog ram in soft latching fault trips when the threshold is exceeded. OVT and OCT settings can be programmed from 10% to 110% of the unit’s max ratings.
• Wired Remote Sensing with Smart Detection - A set of remote sensing terminals are provided to sense voltage
at the load and compensate for voltage drop in the load cables. Compensation is provided up to 3% above the unit’s max rated voltage.
• Leadless Remote Sensing - Using the product’s integrated modulation functionality, automatically compensate
for voltage as a function of current. When the impedance between the power supply and load is known, this feature allows for remote sensing without leads, up to the max ratings of the product.
2.1.2 Programming Features
• High Accuracy Programming and Measurment - ± 0.075% of max rated voltage or current programming
accuracy to ensures the output is following the desired programmed set point. ± 0.2% of max rated voltage or current readback accuracy ensures high accuracy measurements. A NIST traceable calibration certificate is provided at no charge with all new units.
• Simultaneous Measurement Interfaces - Voltage and current measurements are available simultaneously from
the front panel meters, dedicated 0-10V analog output, and by computer command.
• SCPI Remote Programming API - Compatible with the Standard Commands for Programmable Instruments
(SCPI), allowing raw ASCII text commands to control all features, functions, and configurations of the product. Commands are consistent across all available interfaces.
• 37-pin External User I/O Port - An isolated 37-pin external user I/O port is provided, which includes a vari-
ety of analog and digital inputs and outputs. Voltage, current, over voltage and over current set points can be set by applying a 0-10V analog signal. Each diagnostic condition is given a designated pin, which reads +5V when active. Reference +5V and +10V signals are provided, eliminating the need for external voltage signals and allowing the use of dry contacts. All these pins are isolated from the output terminals and referenced to earth-ground as standard—no additional isolation equipment or options necessary.
2.1.3 System Features
• AC Mechanical Contactor with In-rush Limiter - An integrated mechanical contactor on the AC input circuit
ensures the product is not processing power when in standby or fault. This contactor, coupled with step-start in-rush limiter circuitry, ensures no in-rush current will exceed peak input current rating of the product.
• Designed for Safety - Extensive diagnostic functions are provided, including: AC phase loss (not on SL/XR Se-
ries), excessive thermal conditions, over voltage trip (programmable), over current trip (programmable), cleared fuse (not on SL/XR Series), excessive program line voltage, and interlock fault. A dedicated +5V interlock input pin and included +5V reference on all models, external emergency stop systems can be easily integrated using an external contact.
8 Chapter 2. Product Introduction
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• High-Performance Plug and Play Master-Slaving - Power capability can easily expanded with additional units
by using the plug and play UID47 master-slaving device. In the MagnaDC master-slave scheme, the master sends gate drive signals directly to the slave units. This strategy eliminates the noise suceptibility commonly found when sending analog control references over long distances, in addition to enabling consistent performance by maintaining a single control loop.
• Tailor Performance with Integrated Options - A variety of configured-to-order options are available for Mag-
naDC programmable power supplies are designed to be flexible, depending on the application’s requirements.
• Designed and Manufactured in the USA - For complete control of quality, MagnaDC programmable DC power
supplies are designed and manufactured at Magna-Power’s vertically integrated USA manufacturing facility in Flemington, New Jersey. Heat-sinks and chassis are machined from aluminum. All sheet metal is fabricated and powder coated in-house. Magnetics are wound-to-order from validated designs based on a model’s voltage and current. An automated surface-mount production line places components on printed circuit boards for control, driver, auxiliary power, and display circuits. And finally after assembly, products undergo comprehensive test and NIST-traceable calibration, followed by an extended burn-in period.
2.2 Models
The following tables list the available models in the SL Series MagnaDC power supply. Ripple is specified for standard models. Ripple will be higher for models with the High Slew Rate Output (+HS). Efficiency is measured at the model’s maximum ratings.
2.2.1 Model Ordering Guide
The following ordering guide defines how an SL Series MagnaDC power supply is defined:
Fig. 2.1: SL Series MagnaDC power supply Model Ordering Guide
2.2. Models 9
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2.2.2 1.5 kW SL Series Models
Model Maximum Voltage Maximum Current Ripple Efficiency
SL5-250 5 Vdc 250 Adc 50 mVrms 84% SL10-150 10 Vdc 150 Adc 40 mVrms 89% SL16-93 16 Vdc 93 Adc 35 mVrms 89% SL20-75 20 Vdc 75 Adc 40 mVrms 90% SL25-60 25 Vdc 60 Adc 40 mVrms 91% SL32-46 32 Vdc 46 Adc 40 mVrms 91% SL40-37 40 Vdc 37 Adc 40 mVrms 91% SL50-30 50 Vdc 30 Adc 50 mVrms 92% SL60-25 60 Vdc 25 Adc 60 mVrms 93% SL80-18 80 Vdc 18 Adc 60 mVrms 93% SL100-15 100 Vdc 15 Adc 60 mVrms 93% SL125-12 125 Vdc 12 Adc 100 mVrms 93% SL160-9 160 Vdc 9 Adc 120 mVrms 93% SL200-7.5 200 Vdc 7.5 Adc 125 mVrms 94% SL250-6 250 Vdc 6 Adc 130 mVrms 94% SL300-5 300 Vdc 5 Adc 160 mVrms 94% SL375-4 375 Vdc 4 Adc 170 mVrms 94% SL400-3.7 400 Vdc 3.7 Adc 180 mVrms 95% SL500-3 500 Vdc 3 Adc 220 mVrms 95% SL600-2.5 600 Vdc 2.5 Adc 250 mVrms 95% SL800-1.8 800 Vdc 1.8 Adc 300 mVrms 95% SL1000-1.5 1000 Vdc 1.5 Adc 350 mVrms 95% SL1250-1.2 1250 Vdc 1.2 Adc 375 mVrms 95% SL1500-1 1500 Vdc 1 Adc 400 mVrms 95%
10 Chapter 2. Product Introduction
2.2.3 2.6 kW SL Series Models
Model Maximum Voltage Maximum Current Ripple Efficiency
SL10-250 10 Vdc 250 Adc 40 mVrms 89% SL16-162 16 Vdc 162 Adc 35 mVrms 89% SL20-130 20 Vdc 130 Adc 40 mVrms 90% SL25-104 25 Vdc 104 Adc 40 mVrms 91% SL32-81 32 Vdc 81 Adc 40 mVrms 91% SL40-65 40 Vdc 65 Adc 40 mVrms 91% SL50-52 50 Vdc 52 Adc 50 mVrms 92% SL60-43 60 Vdc 43 Adc 60 mVrms 93% SL80-32 80 Vdc 32 Adc 60 mVrms 93% SL100-26 100 Vdc 26 Adc 60 mVrms 93% SL125-20 125 Vdc 20 Adc 100 mVrms 93% SL160-16 160 Vdc 16 Adc 120 mVrms 93% SL200-13 200 Vdc 13 Adc 125 mVrms 94% SL250-10.4 250 Vdc 10.4 Adc 130 mVrms 94% SL300-8.6 300 Vdc 8.6 Adc 160 mVrms 94% SL375-6.9 375 Vdc 6.9 Adc 170 mVrms 94% SL400-6.5 400 Vdc 6.5 Adc 180 mVrms 95% SL500-5.2 500 Vdc 5.2 Adc 220 mVrms 95% SL600-4.3 600 Vdc 4.3 Adc 250 mVrms 95% SL800-3.2 800 Vdc 3.2 Adc 300 mVrms 95% SL1000-2.6 1000 Vdc 2.6 Adc 350 mVrms 95% SL1250-2 1250 Vdc 2 Adc 375 mVrms 95% SL1500-1.7 1500 Vdc 1.7 Adc 400 mVrms 95%
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2.2.4 4 kW SL Series Models
Model Maximum Voltage Maximum Current Ripple Efficiency
SL16-250 16 Vdc 250 Adc 35 mVrms 89% SL20-200 20 Vdc 200 Adc 40 mVrms 90% SL25-160 25 Vdc 160 Adc 40 mVrms 91% SL32-125 32 Vdc 125 Adc 40 mVrms 91% SL40-100 40 Vdc 100 Adc 40 mVrms 91% SL50-80 50 Vdc 80 Adc 50 mVrms 92% SL60-66 60 Vdc 66 Adc 60 mVrms 93% SL80-50 80 Vdc 50 Adc 60 mVrms 93% SL100-40 100 Vdc 40 Adc 60 mVrms 93% SL125-32 125 Vdc 32 Adc 100 mVrms 93% SL160-25 160 Vdc 25 Adc 120 mVrms 93% SL200-20 200 Vdc 20 Adc 125 mVrms 94% SL250-16 250 Vdc 16 Adc 130 mVrms 94% SL300-13.2 300 Vdc 13.2 Adc 160 mVrms 94% SL375-10.4 375 Vdc 10.4 Adc 170 mVrms 94% SL400-10 400 Vdc 10 Adc 180 mVrms 95% SL500-8 500 Vdc 8 Adc 220 mVrms 95% SL600-6.4 600 Vdc 6.4 Adc 250 mVrms 95% SL800-5 800 Vdc 5 Adc 300 mVrms 95% SL1000-4 1000 Vdc 4 Adc 350 mVrms 95% SL1250-3.2 1250 Vdc 3.2 Adc 375 mVrms 95% SL1500-2.6 1500 Vdc 2.6 Adc 400 mVrms 95%
2.2.5 6 kW SL Series Models
Model Maximum Voltage Maximum Current Ripple Efficiency
SL20-250 20 Vdc 250 Adc 40 mVrms 90% SL25-240 25 Vdc 240 Adc 40 mVrms 91% SL32-186 32 Vdc 186 Adc 40 mVrms 91% SL40-150 40 Vdc 150 Adc 40 mVrms 91% SL50-120 50 Vdc 120 Adc 50 mVrms 92% SL60-100 60 Vdc 100 Adc 60 mVrms 93% SL80-75 80 Vdc 75 Adc 60 mVrms 93% SL100-60 100 Vdc 60 Adc 60 mVrms 93% SL125-48 125 Vdc 48 Adc 100 mVrms 93% SL160-36 160 Vdc 36 Adc 120 mVrms 93% SL200-30 200 Vdc 30 Adc 125 mVrms 94% SL250-24 250 Vdc 24 Adc 130 mVrms 94% SL300-20 300 Vdc 20 Adc 160 mVrms 94% SL375-16 375 Vdc 16 Adc 170 mVrms 94% SL400-15 400 Vdc 15 Adc 180 mVrms 95% SL500-12 500 Vdc 12 Adc 220 mVrms 95% SL600-10 600 Vdc 10 Adc 250 mVrms 95% SL800-7.5 800 Vdc 7.5 Adc 300 mVrms 95% SL1000-6 1000 Vdc 6 Adc 350 mVrms 95% SL1250-4.8 1250 Vdc 4.8 Adc 375 mVrms 95% SL1500-4 1500 Vdc 4 Adc 400 mVrms 95%
12 Chapter 2. Product Introduction
2.2.6 8 kW SL Series Models
Model Maximum Voltage Maximum Current Ripple Efficiency
SL32-250 32 Vdc 250 Adc 40 mVrms 91% SL40-200 40 Vdc 200 Adc 40 mVrms 91% SL50-160 50 Vdc 160 Adc 50 mVrms 92% SL60-133 60 Vdc 133 Adc 60 mVrms 93% SL80-100 80 Vdc 100 Adc 60 mVrms 93% SL100-80 100 Vdc 80 Adc 60 mVrms 93% SL125-64 125 Vdc 64 Adc 100 mVrms 93% SL160-50 160 Vdc 50 Adc 120 mVrms 93% SL200-40 200 Vdc 40 Adc 125 mVrms 94% SL250-32 250 Vdc 32 Adc 130 mVrms 94% SL300-26.4 300 Vdc 26.4 Adc 160 mVrms 94% SL375-21.3 375 Vdc 21.3 Adc 170 mVrms 94% SL400-20 400 Vdc 20 Adc 180 mVrms 95% SL500-16 500 Vdc 16 Adc 220 mVrms 95% SL600-13.3 600 Vdc 13.3 Adc 250 mVrms 95% SL800-10 800 Vdc 10 Adc 300 mVrms 95% SL1000-8 1000 Vdc 8 Adc 350 mVrms 95% SL1250-6.4 1250 Vdc 6.4 Adc 375 mVrms 95% SL1500-5.3 1500 Vdc 5.3 Adc 400 mVrms 95%
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2.2.7 10 kW SL Series Models
Model Maximum Voltage Maximum Current Ripple Efficiency
SL40-250 40 Vdc 250 Adc 40 mVrms 91% SL50-200 50 Vdc 200 Adc 50 mVrms 92% SL60-166 60 Vdc 166 Adc 60 mVrms 93% SL80-125 80 Vdc 125 Adc 60 mVrms 93% SL100-100 100 Vdc 100 Adc 60 mVrms 93% SL125-80 125 Vdc 80 Adc 100 mVrms 93% SL160-60 160 Vdc 60 Adc 120 mVrms 93% SL200-50 200 Vdc 50 Adc 125 mVrms 94% SL250-40 250 Vdc 40 Adc 130 mVrms 94% SL300-33.3 300 Vdc 33.3 Adc 160 mVrms 94% SL375-26.5 375 Vdc 26.5 Adc 170 mVrms 94% SL400-25 400 Vdc 25 Adc 180 mVrms 95% SL500-20 500 Vdc 20 Adc 220 mVrms 95% SL600-16.5 600 Vdc 16.5 Adc 250 mVrms 95% SL800-12.5 800 Vdc 12.5 Adc 300 mVrms 95% SL1000-10 1000 Vdc 10 Adc 350 mVrms 95% SL1250-8 1250 Vdc 8 Adc 375 mVrms 95% SL1500-6.6 1500 Vdc 6.6 Adc 400 mVrms 95%
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2.3 Specifications
2.3.1 AC Input Specifications
1Φ AC Input Voltage
1Φ, 2-wire + ground
3Φ AC Input Voltage
3Φ, 3-wire + ground
Available on all models
AC Input Current Refer to chart of available models AC Input Frequency 50-400 Hz Power Factor
AC Input Isolation ±2500 Vac, maximum input voltage to ground
85 to 265 Vac (UI: Universal input; 1.5 kW Models)
187 to 265 Vac (UI2: Universal input; 2.6 kW Models)
208 Vac (operating range 187 to 229 Vac)
240 Vac (operating range 216 to 264 Vac)
380/400 Vac (operating range 342 to 440 Vac)
415 Vac (operating range 373 to 456 Vac)
440 Vac (operating range 396 to 484 Vac)
480 Vac (operating range 432 to 528 Vac)
0.99 at max power; models with 1Φ AC input
>0.82 at max power; models with 3Φ AC input
2.3.2 Output Specifications
Voltage Ripple Refer to chart of available models. Line Regulation
Voltage mode: ± 0.004% of full scale
Current mode: ± 0.02% of full scale
Load Regulation
Voltage mode: ± 0.01% of full scale
Current mode: ± 0.04% of full scale
Load Transient Response 2 ms to recover within ±1% of regulated output with a 50% to 100% or 100%
to 50% step load change Stability ± 0.10% for 8 hrs. after 30 min. warm-up Efficiency 86% to 88%; refer to chart of available models DC Output Isolation ±1000 Vdc max output voltage to ground
14 Chapter 2. Product Introduction
2.3.3 Programming Specifications
Programming Accuracy
Voltage: ±0.075% of max voltage rating
Current: ±0.075% of max current rating
Measurement Accuracy
Voltage: ±0.2% of max voltage rating
Current: ±0.2% of max current rating
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Maximum Slew Rate
Standard Models
Maximum Slew Rate
Models with High Slew Rate Option (+HS)
Trip Settings Range
Computer Command Protocol Standard Commands for Programmable Instruments (SCPI)
Remote Sense Limits
Wired
100 ms, output voltage change from 0 to 63%
100 ms, output current change from 0 to 63%
4 ms, output voltage change from 0 to 63%
8 ms, output current change from 0 to 63%
Over Voltage: 10% to 110% max voltage rating
Over Current: 10% to 110% max current rating
3% maximum voltage drop from output to load
2.3.4 Connectivity Specifications
Communication Interfaces (Stan­dard) RS232: DB-9, Female
External User I/O: DB-37, Female
Communication Interfaces (Op­tional) LXI TCP/IP Ethernet: RJ-45
GPIB: IEEE-488
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2.3.5 External User I/O Specifications
Digital Inputs 5 V, 10 k impedance Digital Monitoring Signals 5 V, 5 mA capacity Digital Reference Signal 5 V output, 25 mA capacity Analog Programming Input 0-10 V Analog Programming Impedance 10 k Analog Monitoring Signals 0-10 V, 5 mA capacity Analog Monitoring Impedance 100 Analog Monitoring Accuracy 0.2% of max rating Analog Reference Signal 10 V, 5 mA capacity, 1 impedance
For more details about the Exter nal User I/O, see: user-io.
2.3.6 Physical Specifications
Power Level Rack Units Size Weight
1.5 kW 1U
1.75” H x 19” W x 24” D
(4.4 x 48.3 x 61.0 cm)
32 lbs (14.52 kg)
2.6 kW 1U
4 kW 1U
6 kW 1U
8 kW 1U
10 kW 1U
34 lbs (15.42 kg)
1.75” H x 19” W x 24” D
(4.4 x 48.3 x 61.0 cm)
35 lbs (15.88 kg)
1.75” H x 19” W x 24” D
(4.4 x 48.3 x 61.0 cm)
35 lbs (15.88 kg)
1.75” H x 19” W x 24” D
(4.4 x 48.3 x 61.0 cm)
36 lbs (16.33 kg)
1.75” H x 19” W x 24” D
(4.4 x 48.3 x 61.0 cm)
37 lbs (16.78 kg)
1.75” H x 19” W x 24” D
(4.4 x 48.3 x 61.0 cm)
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2.3.7 Environmental Specifications
Ambient Operating Temperature 0°C to 50°C Storage Temperature -25°C to +85°C Humidity Relative humidity up to 95% non-condensing Air Flow Side air inlet, rear exhaust Temperature Coefficient
0.04%/°C of maximum output voltage
0.06%/°C of maximum output current
2.3.8 Regulatory Compliance
EMC
Complies with 2014/30/EU (EMC Directive)
CISPR 22 / EN 55022 Class A
Safety
NRTL Listed, Intertek Control Number 5014353
Conforms to UL61010-1:2012 Ed.3+R:29Apr2016
Certified to CSA C22.2#61010-1-12:2012 Ed.3
Complies with EN61010-1 and 2014/35/EU (Low Voltage Directive)
CE Mark Yes RoHS Compliant Yes
2.4 Dimensional Diagrams
2.5 Principle of Operation
This section provides a general overview of the technology and power processing stages in a Magna-Power Electronics SL Series. fig-block-diagram provides an visual overview of the power supply’s main power and control stages.
Power is fed through AC fuses and is distributed to the auxiliary power supply, inrush limiter, and main 3Φ contactor. The auxiliary power supply operates off the AC mains, supplying power to the other printed circuit boards in the system. The inrush limiter is a step start device which is used to initially charge capacitors on the input DC bus and limit the inrush of current. The inrush limiter is initiated when the power supply is switched from a standby to a power state. After the charge cycle, the main 3Φ contactor is energized and power is allowed to flow to the load. The EMI filter reduces common mode and differential mode noise emanating from the supply.
Output power is controlled through a polyphase chopper. For the 4 kW, 6 kW, 8 kW, and 10 kW SL Series power supplies, three choppers, phased 120° apart, provide a current source to a current fed inverter. The 2.6 kW SL Series power supplies uses two choppers, phased 180° apart, and the 1.5 kW supplies uses only one chopper. The choppers are controlled with current mode, pulse width modulation (PWM).
This modulation scheme provides a quick response for transients and filtering harmonics on the DC bus. As illustrated, chopper output current is monitored for balancing and for sensing overload current conditions. The polyphase chopper has been engineered to eliminate harmonic components minimizing currents circulating in the power supply.
2.4. Dimensional Diagrams 17
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0.33 in
(0.83 cm)
0.24 in
(0.59 cm)
1.25 in
(3.18 cm)
1.72 in
(4.37 cm)
19.00 in
(48.26 cm)
RS232 (JS3)
17.00 in
(43.18 cm)
1.00 in
(2.54 cm)
37-PIN EXTERNAL USER I/O (JS1)
24.00 in
(60.96 cm)
25.50 in
(64.77 cm)
1.00 in
(2.54 cm)
Air Intake, Both Sides
Removable Rear Covers
4.06 in
(10.31 cm)
12.08 in
(30.68 cm)
0.75 in
(1.91 cm)
0.25 x 0.75 in (0.64 x 1.91 cm) Tin Plated Copper Bus Bars 3/8-16 Threaded Insert, Qty (2)
13.08 in
(33.21 cm)
10-32 Ground Stud
38660 Molex Input Connector
1.26 in
(3.21 cm)
Fig. 2.2: SL Series MagnaDC power supply functional block diagram
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The polyphase chopper produces a controlled DC bus which is connected to DC link inductors and current fed, IGBT inverter. The inverter, which operates above 20 kHz, excites the main transformer at higher than normal line frequencies. This operation produces ohmic isolation between the input and output of the power supply using a transformer of dramatically reduced size.
The inverter operates with a 50% duty cycle and its frequency operation is transparent to the performance of the power supply.
The output of the main power transformer is converted to DC via rectifiers. Low voltage versions of the SL Series power supply use midpoint diode configurations and higher voltage versions use bridge configurations.
The DC output voltage is filtered with a pi section filter. This, in combination with the DC link inductors, form a double stage inductive capacitive (LC) filter.
The gate driver board supports a synchronized modulation scheme which integrates power semiconductor switching of the switching power supply, polyphase chopper, and IGBT inverter.
The phase detector senses input line voltage on each phase. Upon detection of a problem, the control board is signaled to shutdown the system. The control board, which is referenced to earth ground, contains optically isolated amplifiers to sense output voltage and current. This circuitry allows the output to be referenced ±1000 Vdc above earth ground.
The display board contains light-emitting diodes for displaying diagnostic conditions and provides an interface for meters and switches.
2.6 Options
2.6.1 Blocking Diode (+BD)
The integrated Blocking Diode (+BD) option provides an internally heat-sunk protection diode on the positive output terminal of a MagnaDC programmable DC power supply. This diode protects the product’s output from reverse voltage up to 1200 Vdc. All voltage sensing is performed after the protection diode—at the product’s output ter minals—making the diode’s operation completely transparent to the performance of the power supply.
The +BD option is recommended for applications where there is significant back-emf or the possibility of a DC output voltage that could exceed the power supply’s output voltage rating, such as:
• DC motor drives
• Battery and capacitor charging
• Large electromagnets
In these applications, the integrated blocking diode can be used to prevent back-emf from the energy stored in the load into the power supply’s output. Furthermore, the integrated blocking diode will prevent the power supply’s internal bleed resistance from discharging the energy storaged in the load when the power supply is off or in standby.
Availability
The +BD option is available for models with maximum output voltage rating as specified for the following product series:
• TS Series, models rated from 100 Vdc to 1000 Vdc
• MS Series, models rated from 100 Vdc to 1000 Vdc
• MT Series, models rated from 125 Vdc to 1000 Vdc
Note: The +BD option cannot be combined with the +ISO option.
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Table 2.9: Additional specifications for Blocking Diode (+BD) option
Reverse Voltage Rating 1200 Vdc Additional Losses Up to 1.4%
2.6.2 High Isolation Output (+ISO)
Certain applications require floating the output voltage to values beyond the power supply isolation rating. Magna-Power’s High Isolation Output Option (+ISO) enables a TS Series, MS Series or MT Series model with a peak output voltage rating of 250 Vdc through 1000 Vdc to be rated for a higher voltage output isolation. Improved isolation is achieved by a novel output stage with improved controller isolation. In addition to being able to float the power supply to a higher output voltage, this option also enables lower voltage units to be tied together in series up to its new higher isolation rating, in accordance with the table in the Specifications section below.
Availability
The +ISO option is available for models with maximum output voltage rating as specified for the following product series:
• TS Series, models rated from 250 Vdc to 1000 Vdc
• MS Series, models rated from 250 Vdc to 1000 Vdc
• MT Series, models rated from 250 Vdc to 1000 Vdc
Note: The +ISO option cannot be combined with the +BD or +WC options.
Note: Addition of the +ISO option will cause the product’s wired remote sense feature to be removed.
Table 2.10: Option isolation rating for various configurations
Product Series
Output Isolation Standard,
No Option
SL Series ±1000 Vdc N/A N/A XR Series ±1000 Vdc N/A ±(2000 Vdc + Vo/2) TS Series ±1000 Vdc ±(2000 Vdc + Vo/2) ±(2000 Vdc + Vo/2) MS Series ±1000 Vdc ±(2000 Vdc + Vo/2) ±(2000 Vdc + Vo/2) MT Series ±1000 Vdc ±4000 Vdc ±4000 Vdc
Output Isolation for Models Rated 250-1000
Vdc With +ISO Option
Output Isolation for Models Rated Above
1000 Vdc; Standard, No Option
Necessary
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2.6.3 High Slew Rate Output (+HS)
The High Slew Rate Output (+HS) solves several limitations inherent in switching power supply design. Rapid voltage transitions require internal electronics to supply the energy to charge and discharge output capacitors. Peak currents internal to the power supply define slew rate; utilizing less capacitance enables voltage transitions in shorter time periods. Additionally, less capacitance reduces requirements for discharge demands during open circuit conditions.
The standard output stage Magna-Power Electronics power supplies has been designed to provide the lowest possible output ripple voltage within the constraints of available components, size, and cost. Part of the output stage consists of a bank of aluminum electrolytic capacitors which has the desired electrical properties to provide this function. These components require bleed resistors to discharge any voltage when the power supply has no load and is disabled. While the presence of these components and the resulting performance are normally industry accepted, there are applications where lower output capacitance and lower loss bleed resistors are extremely desirable and higher ripple voltage is ac­ceptable. To meet this need, a high-slew rate option is available which has an output stage consisting of low capacitance film and aluminum electrolytic capacitors and lower loss bleed resistors. Applications for the high-slew rate option in­clude battery charging, photovoltaic emulation, power waveform generation, and medium speed power pulsing. These applications all benefit from higher bandwidth and in many cases, can tolerate increased ripple voltage.
Key Applications
For battery charger applications, output capacitance and internal bleed resistors present themselves as a load to the connecting batteries. One common practice is to use a series diode to block reverse current flow with the sacrifice of increased cost and lower efficiency. The high slew rate option, with its lower output capacitance and lower loss bleed resistors, enables direct connection to batteries without series blocking diodes.
For photovoltaic emulation applications, higher bandwidth and lower output capacitance enable improved performance with higher speed, maximum power tracker algorithms. Maximum power tracker circuitry deviates the operating point of photovoltaic arrays to determine maximum power output. Slow responding emulation sources can present a problem when the speed of the algorithm exceeds that of the source. Furthermore, with lower output capacitance, changes in the operating point and transients, caused by shorting the solar inverter input, produce lower unwanted input currents.
The high-slew rate option enables the power supply to operate as a low frequency, power pulse generator. With the special capacitors selected for this option, it is possible to superimpose waveforms or produce a medium speed pulse on top of the dc output and expect normal capacitor life. It is important to note that the power supply output is single quadrant; that is, the output voltage or current cannot reverse.
Availability
The +HS option is available for the following product series: * SL Series * XR Series * TS Series * MS Series * MT Series
Note: XR Series models greater than 2000 Vdc already include a high slew rate output stage and no additional +HS option is available for these models.
Table 2.11: Additional specifications for High Slew Rate Output (+HS) option
Max Voltage Rat­ing Output
Capacitance SL Series (ţF)
Output Capacitance
XR Series (ţF)
Output Capacitance
TS Series and MS Series (ţF)
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Ripple (Vrms)
5 4235 13200 13200 0.5 8 N/A N/A 9000 0.5
continues on next page
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Table 2.11 – continued from previous page Max Voltage Rat­ing Output
Capacitance SL Series (ţF)
Output Capacitance
XR Series (ţF)
Output Capacitance
TS Series and MS Series (ţF)
Page 22, 1
10 1740 4080 9000 0.5 16 1740 4080 4080 0.5 20 775 2340 2340 0.7 25 775 1170 2340 0.7 32 775 1170 1170 1.4 40 760 240 1170 1.5 50 760 240 1170 1.5 60 760 240 300 1.5 80 110 240 300 1.5 100 110 160 200 1.6 125 70 160 200 1.6 160 70 160 200 1.6 200 70 160 200 1.6 250 70 160 200 1.6 300 70 160 200 1.8 375 70 160 200 1.8 400 70 160 200 1.8 500 40 56 200 2.1 600 40 56 120 2.3 800 30 52 70 2.5 1000 30 52 60 3.0 1250 N/A 18 18 3.5 1500 N/A 18 18 3.5 2000 N/A 18 18 3.5 3000 N/A N/A 9 4.0 4000 N/A N/A 9 4.0 6000-10000 N/A N/A N/A N/A
Ripple (Vrms)
2.6.4 IEEE-488 GPIB (+GPIB)
The IEEE-488 GPIB (+GPIB) option, sometimes called the General Purpose Interface Bus (GPIB), is a general purpose digital interface system that can be used to transfer data between two or more devices. It is particularly well-suited for interconnecting computers and instruments. Some of its key features are:
• Up to 15 devices may be connected to one bus
• Total bus length may be up to 20 m and the distance between devices may be up to 2 m
• Communication is digital and messages are sent one byte (8 bits) at a time
• Message transactions are hardware handshaked
• Data rates may be up to 1 Mbyte/sec
1
For 20 to 30 kW models, multiply capacitance by 2; 45 kW models, multiply capacitance by 3; 60 kW models, multiply capacitance by 4; 75
kW models, multiply capacitance by 5; TS Series 4U/8U models and MT Series models, please contact Magna-Power support.
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The IEEE-488 GPIB interface in integrated with the power supply’s rear communication ports. The IEEE 488 interface offers full compatibility with Magna-Power provided drivers, software and SCPI command set.
Availability
The +GPIB option is available for the following product series:
• SL Series
• XR Series
• TS Series
• MS Series
• MT Series
2.6.5 LXI TCP/IP Ethernet (+LXI)
Certified to the LXI Standard (Class C), version 1.4, the LXI TCP/IP Etherent (+LXI) allows the product to be fully controlled over an integrated TCP/IP Ethernet interface. LXI is an instr umentation platform based on industry standard Ethernet technology designed to provide modularity, flexibility, and performance to small- and medium-sized systems. All of the product’s standard SCPI commands are supported over the +LXI option, along with all provided software and drivers.
LXI’s advantages are exemplified in its compact, flexible package providing high-speed I/O and reliable measurements. The Magna-Power Electronics LXI TCP/IP Ethernet option includes an embedded web-server, allowing web browser power supply control and monitoring from virtually anywhere.
Availability
The +LXI option is available for the following product series:
• SL Series
• XR Series
• TS Series
• MS Series
• MT Series
2.6.6 Ruggedized (+RUG)
The Ruggedized Option (+RUG) provides additional mechanical security for large power components and sub-assemblies within SL Series and XR Series products.
SL Series and XR Series units with the Ruggedized Option have been independently tested to comply with the following MIL-STD-810G shock and vibration specifications:
• MIL-STD-810G CHG1 Method 516.7 Functional Shock, Procedure I; which subjects the product to 40G, 11 ms terminal saw tooth pulse; three shocks in each direction along three mutually perpendicular axes
• MIL-STD-810G CHG1 Method 514.7 Vibration; which subjects the product to two hours of vibration per axis along three mutually per pendicular axes
All products with the Ruggedized Option maintain ambient operating temperatures from 0°C to 50°C and ambient storage temperatures from -25°C to +85°C.
Availability
The +RUG option is available for the following product series:
2.6. Options 23
SL Series Documentation, Release 1
• SL Series
• XR Series
2.6.7 Water Cooling (+WC)
The Water Cooling (+WC) option is available for Magna-Power power supplies for use in densely packaged system cabinets, where heat removal by the product’s standard air cooling presents a challenge. Water cooling is accomplished with chill plates and an integrated central heat exchanger. The chill plates provides a thermal conduction path for heat sensitive components and the central heat exchanger removes heat from air internal to the enclosure. An inter­nal solenoid valve enables water flow when the chill plate reaches 60°C. Operation of the solenoid prevents internal condensation.
Each 3U and 4U module has a 1/4” NPT male inlet and outlet for water flow. For 6U and 8U, external plumbing interconnects power supply modules, providing a single 1/2” NPT male inlet and outlet. A minimum of 2.50” is recommended behind the enclosure for this hardware and user connections. For systems requiring more than one power supply, plumbing connections must be paralleled; that is, water should not flow from one power supply into another.
When water cooled power supplies are ordered in combination with the Cabinet and Integration accessory, Magna-Power will parallel the water inlet connections and parallel the water outlet connections, providing a single inlet and outlet for the rack.
Availability
The +WC option is available for models with maximum output voltage rating as specified for the following product series:
• TS Series, models rated from 1000 Vdc and below
• MS Series, models rated from 1000 Vdc and below
Note: The +WC option cannot be combined with the +ISO option.
For detailed specifications on the +WC, including flow rate and pressure, please refer to the individual product speci­fications.
2.7 Accessories
2.7.1 Cabinet and Integration
Cabinet and integration services are offered for the rack-mount programmable DC power supply products. Cabinets are supplied with fans rated to installed products. Key features of the cabinet and integration option are as follows:
• Internally fabricated, heavy duty welded cabinet frames
• Casters installed, including (2) locking casters
• Special circuitry for product integration with cabinet fans
• Installation and testing as a complete system
24 Chapter 2. Product Introduction
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