KEPCO KLP SERIES User manual

IMPORTANT NOTES:
1) This manual is valid for the following Model and associated serial numbers:
MODEL SERIAL NO. REV. NO.
KLP 20-120-1200 REV.11
KLP 36-60-1200 REV.11
KLP 75-33-1200 REV.24
KLP 150-16-1200 REV.21
KLP 300-8-1200 REV.13
KLP 600-4-1200 REV.2
2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num-
bers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu-
mentation Office in New York, [phone], requesting the correct revision for your
particular model and serial number.
3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
KEPCO®
THE POWER SUPPLIER™
MODEL
OPERATOR’S MANUAL
ORDER NO. REV. NO.
KEPCO, INC. !131-38 SANFORD AVENUE !FLUSHING, NY. 11355 U.S.A. !TEL [phone] !FAX [phone]
email: [e-mail] !World Wide Web: http://www.kepcopower.com
KEPCO INC.
An ISO 9001 Company.
KLP SERIES
POWER SUPPLY
1200 WATT PROGRAMMABLE POWER SUPPLY
KLP SERIES
POWER SUPPLY
©2008, KEPCO, INC
P/N 243-0979-e

228-1348 DC-COMP/INST 073008 A
Declaration of Conformity
Application of Council directives: 73/23/EEC (LVD)
93/68/EEC (CE mark)
Standard to which Conformity is declared:
EN61010-1:2001 (Safety requirements for electrical equipment for measurement,
control and laboratory use - Part 1)
Manufacturer's Name and Address: KEPCO INC.
131-38 SANFORD AVENUE
FLUSHING, N.Y. 11352 USA
Importer's Name and Address:
Type of Equipment: Component Power Supply
Model No.: [PRODUCT MODEL NUMBER]
Year of Manufacture:
I, the undersigned, declare that the product specified above, when used in conjunction with the condi-
tions of conformance set forth in the product instruction manual, complies with the requirements of the
Low Voltage Directive 73/23/EEC, which forms the basis for application of the CE Mark to this product.
Place: KEPCO Inc.
131-38 Sanford Ave.
Flushing, N.Y.11352 USA
Date:
Saul Kupferberg
(Full Name)
VP OF SALES
(position)
REPRESENTATIVECOPY

B228-1351 COND/CONFORM 073008
Conditions of Conformance
When this product is used in applications governed by the requirements of the EEC, the following restric-
tions and conditions apply:
1. For European applications, requiring compliance to the Low Voltage Directive, 73/23/EEC, this power
supply is considered a component product, designed for "built in“ applications. Because it is incom-
plete in construction, the end product enclosure must provide for compliance to any remaining electri-
cal safety requirements and act as a fire enclosure. (EN61010-1:2001, Cl. 6, Cl. 7, Cl.8, and Cl. 9)
2. This power supply is designed for stationary installation, with mains power applied via a detachable
power supply cord or via direct wiring to the source power terminal block.
3. This power supply is considered a Class 1 (earthed) product. It is intended for use as part of equip-
ment meant for test, measurement and laboratory use, and is designed to operate from single phase,
three wire power systems. This equipment must be installed within a suitably wired equipment rack,
utilizing a three wire (grounded) mains connection. See wiring section of this manual for complete
electrical wiring instructions. (EN61010-1:2001, Cl.6.10.1)
4. This power supply has secondary output circuits that are considered hazardous, and which exceed
240 VA at a potential of 2V or more.
5. The output wiring terminals of this power supply has not been evaluated for field wiring and, therefore,
must be properly configured by the end product manufacturer prior to use.
6. This power supply employs a supplementary circuit protector in the form of a circuit breaker mounted
on the front panel. This circuit breaker protects the power supply itself from damage in the event of a
fault condition. For complete circuit protection of the end product, as well as the building wiring, it is
required that a primary circuit protection device be fitted to the branch circuit wiring. (EN61010-
1:2001, Cl. 9.5)
7. Hazardous voltages are present within this power supply during normal operation. All operator adjust-
ments to the product are made via externally accessible switches, controls and signal lines as speci-
fied within the product operating instructions. There are no user or operator serviceable parts within
the product enclosure. Refer all servicing to qualified and trained Kepco service technicians.

228-1353 SAFETY - (SWITCH) 073008 C/(D BLANK)
SAFETY INSTRUCTIONS
1. Installation, Operation and Service Precautions
This product is designed for use in accordance with EN 61010-1 and UL 3101 for Installation Category 2,
Pollution Degree 2. Hazardous voltages are present within this product during normal operation. The prod-
uct should never be operated with the cover removed unless equivalent protection of the operator from
accidental contact with hazardous internal voltages is provided:
2. Grounding
This product is a Class 1 device which utilizes protective earthing to ensure operator safety.
3. Electric Shock Hazards
This product outputs hazardous voltage and energy levels as a function of normal operation. Operators
must be trained in its use and exercise caution as well as common sense during use to prevent accidental
shock.
There are no operator serviceable parts or adjustments within the product enclosure.
Refer all servicing to trained service technician.
Source power must be removed from the product prior to performing any servicing.
The PROTECTIVE EARTHING CONDUCTOR TERMINAL must properly con-
nected prior to application of source power to the product (see instructions on instal-
lation herein) in order to ensure safety from electric shock.
PROTECTIVE EARTHING CONDUCTOR TERMINAL - This symbol indicates the
point on the product to which the protective earthing conductor must be attached.
EARTH (GROUND) TERMINAL - This symbol is used to indicate a point which is
connected to the PROTECTIVE EARTHING TERMINAL. The component installer/
assembler must ensure that this point is connected to the PROTECTIVE EARTH-
ING TERMINAL.
CHASSIS TERMINAL -This symbol indicates frame (chassis) connection, which is
supplied as a point of convenience for performance purposes (see instructions on
grounding herein). This is not to be confused with the protective earthing point, and
may not be used in place of it.
This symbol appears adjacent to any external terminals at which hazardous voltage
levels as high as 500V d-c may exist in the course of normal or single fault condi-
tions.
This symbol appears adjacent to any external terminals at which hazardous voltage
levels in excess of 500V d-c may exist in the course of normal or single fault condi-
tions
!
!
!
!

KLP SVC 020498 i
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope of Manual......................................................................................................................................... 1-1
1.2 General Description .................................................................................................................................... 1-1
1.3 Specifications.............................................................................................................................................. 1-1
1.4 Features...................................................................................................................................................... 1-8
1.4.1 Local Control ........................................................................................................................................... 1-8
1.4.2 Remote Control ....................................................................................................................................... 1-8
1.4.2.1 Digital Programming........................................................................................................................... 1-8
1.4.2.2 Analog Programming ......................................................................................................................... 1-8
1.4.3 Digital Calibration .................................................................................................................................... 1-8
1.4.4 Overvoltage/Overcurrent Protection........................................................................................................ 1-9
1.4.5 User-defined Voltage/Current Limits (Virtual Models) ............................................................................. 1-9
1.4.6 Storage of User-Programmed Active Settings ........................................................................................ 1-9
1.4.7 User-Programmed Sequences................................................................................................................ 1-9
1.4.8 Last Setting Recall .................................................................................................................................. 1-9
1.4.9 Built-in Protection .................................................................................................................................... 1-9
1.4.10 Internal Relay .......................................................................................................................................... 1-10
1.4.11 Master/Slave Control............................................................................................................................... 1-10
1.5 Equipment Supplied.................................................................................................................................... 1-10
1.6 Accessories ................................................................................................................................................ 1-10
1.7 Safety.......................................................................................................................................................... 1-10
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection .......................................................................................................................... 2-1
2.2 Terminations and Controls.......................................................................................................................... 2-1
2.2.1 Front Panel Controls and Indicators. ....................................................................................................... 2-1
2.2.2 Rear Panel Connectors and Switch. ....................................................................................................... 2-1
2.3 Source Power Requirements...................................................................................................................... 2-5
2.4 Cooling........................................................................................................................................................ 2-5
2.5 Preliminary Operational Check ................................................................................................................... 2-5
2.6 Installation................................................................................................................................................... 2-6
2.6.1 Rack Mounting ........................................................................................................................................ 2-6
2.7 Wiring Instructions ...................................................................................................................................... 2-6
2.7.1 Safety Grounding .................................................................................................................................... 2-7
2.7.2 Source Power.......................................................................................................................................... 2-7
2.7.2.1 Current Rating.................................................................................................................................... 2-7
2.7.2.2 Connections ....................................................................................................................................... 2-7
2.7.3 D-C Output Grounding ............................................................................................................................ 2-8
2.7.4 Power Supply/Load Interface .................................................................................................................. 2-9
2.7.5 Load Connection - General ..................................................................................................................... 2-9
2.7.5.1 Local Sensing/Remote Sensing Select .............................................................................................. 2-9
2.7.6 Series Operation ..................................................................................................................................... 2-10
2.7.7 Parallel/redundant Operation .................................................................................................................. 2-10
2.7.7.1 Load Sharing...................................................................................................................................... 2-12
2.7.8 Master/Slave Configurations ................................................................................................................... 2-12
2.7.9 Analog I/O Connections .......................................................................................................................... 2-12
2.7.10 Internal Relay Configuration.................................................................................................................... 2-13
SECTION 3 - OPERATION
3.1 General ....................................................................................................................................................... 3-1
3.2 Local Mode Operation ................................................................................................................................ 3-1
3.2.1 Turning the Power Supply On ................................................................................................................. 3-1
3.2.2 Setting Local/Remote Mode .................................................................................................................... 3-2
3.2.2.1 Remote with Local (Front Panel) Lockout .......................................................................................... 3-3
3.2.3 Enabling/Disabling Output Power............................................................................................................ 3-3
3.2.4 Checking Voltage/Current Setpoints ....................................................................................................... 3-4
3.2.5 Defining a Virtual Model .......................................................................................................................... 3-4

ii KLP SVC 073008
TABLE OF CONTENTS
SECTION PAGE
3.2.6 Setting voltage or current........................................................................................................................ 3-5
3.2.6.1 Real-time Voltage/Current Adjustment .............................................................................................. 3-6
3.2.6.2 Setpoint Adjustment .......................................................................................................................... 3-6
3.2.6.3 Last Setting Recall............................................................................................................................. 3-6
3.2.7 Viewing/Changing Overvoltage or Overcurrent Protection Values ......................................................... 3-6
3.2.8 Changing GPIB Address......................................................................................................................... 3-7
3.2.9 Changing RS232 Baud Rate .................................................................................................................. 3-7
3.2.10 Setting up Master/Slave Configurations ................................................................................................. 3-8
3.2.10.1 Configure power supply as Master.................................................................................................... 3-8
3.2.10.2 Configure power supply as Slave...................................................................................................... 3-9
3.2.10.3 Operating the Master/Slave Configuration ........................................................................................ 3-9
3.2.11 Utility Function ........................................................................................................................................ 3-10
3.2.11.1 Display System Firmware Version..................................................................................................... 3-10
3.2.11.2 Display Model .................................................................................................................................... 3-11
3.2.11.3 Relay Control..................................................................................................................................... 3-11
3.2.11.4 Quick Boot ......................................................................................................................................... 3-12
3.2.11.5 Analog Input Full SCale Calibration................................................................................................... 3-12
3.2.11.6 Calibration ......................................................................................................................................... 3-12
3.3 Digital Remote Mode Programming Using SCPI commands..................................................................... 3-13
3.3.1 Additional Functions Available via Digital Remote Programming ........................................................... 3-13
3.3.1.1 Storage of User-programmed Active Settings................................................................................... 3-13
3.3.1.2 User-determined output Sequences.................................................................................................. 3-13
3.3.1.3 External Triggering ............................................................................................................................ 3-14
3.3.1.4 Internal Relay Configuration .............................................................................................................. 3-14
3.4 RS232-C Operation ................................................................................................................................... 3-14
3.4.1 Serial Interface........................................................................................................................................ 3-15
3.4.2 RS 232 Implementation .......................................................................................................................... 3-15
3.4.2.1 Echo Mode ........................................................................................................................................ 3-16
3.4.2.2 Prompt Method .................................................................................................................................. 3-16
3.4.2.3 XON XOFF Method ........................................................................................................................... 3-17
3.4.2.4 Isolating RS 232 Communications Problems .................................................................................... 3-17
3.5 IEEE 488 (GPIB) Bus Protocol .................................................................................................................. 3-17
3.5.1 Changing the GPIB Address................................................................................................................... 3-18
3.5.2 KLP VISA Instrument driver.................................................................................................................... 3-19
3.6 SCPI Programming .................................................................................................................................... 3-19
3.6.1 SCPI Messages...................................................................................................................................... 3-20
3.6.2 Common Commands/Queries ................................................................................................................ 3-20
3.6.3 SCPI Subsystem Command/Query Structure......................................................................................... 3-20
3.6.3.1 ABORt Subsystem............................................................................................................................. 3-20
3.6.3.2 DISPlay Subsystem........................................................................................................................... 3-20
3.6.3.3 TRIGger Subsystem .......................................................................................................................... 3-20
3.6.3.4 LIST Subsystem ................................................................................................................................ 3-20
3.6.3.5 MEASure Subsystem ........................................................................................................................ 3-20
3.6.3.6 OUTPut Subsystem........................................................................................................................... 3-21
3.6.3.7 STATus Subsystem........................................................................................................................... 3-21
3.6.3.8 SYSTem subsystem .......................................................................................................................... 3-21
3.6.3.9 [SOURce:]VOLTage and [SOURce:]CURRent Subsystems............................................................. 3-21
3.6.3.10 CALibrate Subsystem........................................................................................................................ 3-21
3.6.4 Program Message Structure................................................................................................................... 3-21
3.6.4.1 Keyword............................................................................................................................................. 3-22
3.6.4.2 Keyword Separator............................................................................................................................ 3-22
3.6.4.3 Query Indicator .................................................................................................................................. 3-22
3.6.4.4 Data ................................................................................................................................................... 3-23

KLP SVC 020498 iii
TABLE OF CONTENTS
SECTION PAGE
3.6.4.5 Data Separator................................................................................................................................... 3-23
3.6.4.6 Message Unit Separator .................................................................................................................... 3-23
3.6.4.7 Root Specifier..................................................................................................................................... 3-23
3.6.4.8 Message Terminator .......................................................................................................................... 3-24
3.6.5 Understanding The Command Structure................................................................................................. 3-24
3.6.6 Program Message Syntax Summary....................................................................................................... 3-26
3.6.7 Status Reporting...................................................................................................................................... 3-26
3.6.7.1 Status Reporting Structure................................................................................................................. 3-26
3.6.7.2 Operational Status Register ............................................................................................................... 3-28
3.6.7.3 QUEStionable Status Register........................................................................................................... 3-28
3.6.8 SCPI Program Examples ........................................................................................................................ 3-28
3.7 Remote Programming Using Analog Signals ............................................................................................. 3-29
3.7.1 Enabling/Disabling the Output using Analog Control .............................................................................. 3-29
3.7.2 Programming with external resistance .................................................................................................... 3-30
3.7.3 Programming with external Voltage ........................................................................................................ 3-31
3.7.4 Changing Overvoltage or Overcurrent Protection Values in Analog Programming Mode....................... 3-31
SECTION 4 - CALIBRATION
4.1 General ....................................................................................................................................................... 4-1
4.2 Equipment Required ................................................................................................................................... 4-1
4.3 Calibration Using Front Panel Controls in Local Mode ............................................................................... 4-1
4.3.1 Voltage Calibration (Local) ...................................................................................................................... 4-2
4.3.2 Current Calibration (Local) ...................................................................................................................... 4-3
4.3.3 External Calibration (Local) ..................................................................................................................... 4-3
4.3.4 Calibration Exit (Local) ............................................................................................................................ 4-4
4.4 Calibration using VISA Driver Demo Program Soft Panel .......................................................................... 4-4
4.4.1 Voltage Calibration (VISA Demo)............................................................................................................ 4-5
4.4.2 Current Calibration (VISA Demo) ............................................................................................................ 4-6
4.4.3 Analog Reference Calibration (VISA Demo) ........................................................................................... 4-6
4.4.4 Calibration Exit (VISA Demo) .................................................................................................................. 4-7
4.5 Changing the Calibration Password ........................................................................................................... 4-7
4.6 Restoring Prior Calibration Values.............................................................................................................. 4-8
APPENDIX A - IEEE 488.2 COMMAND/QUERY DEFINITIONS
A.2 *CLS — Clear Status Command ............................................................................................................... A-1
A.3 *ESE — Standard Event Status Enable Command................................................................................... A-1
A.4 *ESE? — Standard Event Status Enable Query........................................................................................ A-2
A.5 *ESR? — Event Status Register Query..................................................................................................... A-2
A.6 *IDN? — Identification Query..................................................................................................................... A-2
A.7 *OPC — Operation Complete Command .................................................................................................. A-2
A.8 *OPC? — Operation Complete Query....................................................................................................... A-3
A.9 *RCL — Recall Command ......................................................................................................................... A-4
A.10 *RST — Reset Command.......................................................................................................................... A-4
A.11 *SAV — Save Command........................................................................................................................... A-4
A.12 *SRE — Service Request Enable Command ............................................................................................ A-4
A.13 *SRE? — Service Request Enable Query ................................................................................................. A-5
A.14 *STB? — Status Byte Register Query ....................................................................................................... A-5
A.15 *TRG — Trigger Command ....................................................................................................................... A-5
A.16 *TST? — Self Test Query .......................................................................................................................... A-5
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS
B.1 Introduction ................................................................................................................................................ B-1
B.2 Numerical Values....................................................................................................................................... B-2
B.3 ABORt Command ...................................................................................................................................... B-2

iv KLP SVC 073008
TABLE OF CONTENTS
SECTION PAGE
B.4 CAL Commands and Queries .................................................................................................................... B-2
B.5 DISPlay:TEXT? Query ............................................................................................................................... B-2
B.6 INITiate[:IMMediate] Command ................................................................................................................. B-2
B.7 INITiate:CONTinuous Command ............................................................................................................... B-3
B.8 INITiate:CONTinuous? Query .................................................................................................................... B-3
B.9 [SOURce:]LIST:CLEar Command ............................................................................................................. B-3
B.10 [SOURce:]LIST:CONTrol Command.......................................................................................................... B-4
B.11 [SOURce:]LIST:CONTrol? QUERY ........................................................................................................... B-4
B.12 [SOURce:]LIST:COUNt Command ............................................................................................................ B-4
B.13 [SOURce:]LIST:COUNt? Query................................................................................................................. B-4
B.14 [SOURce:]LIST:COUNt:SKIP Command................................................................................................... B-4
B.15 [SOURce:]LIST:COUNt:SKIP? Query........................................................................................................ B-4
B.16 [SOURce:]LIST:CURRent Command ........................................................................................................ B-4
B.17 [SOURce:]LIST:CURRent? Query ............................................................................................................. B-5
B.18 [SOURce:]LIST:CURRent:POINts? Query................................................................................................. B-5
B.19 [SOURce:]LIST:DIRection Command........................................................................................................ B-5
B.20 [SOURce:]LIST:DIRection? Query............................................................................................................. B-5
B.21 [SOURce:]LIST:DWELl Command ............................................................................................................ B-5
B.22 [SOURce:]LIST:DWELl? Query ................................................................................................................. B-5
B.23 [SOURce:]LIST:DWELl:POINts? Query..................................................................................................... B-5
B.24 [SOURce:]LIST:QUERy Command ........................................................................................................... B-6
B.25 [SOURce:]LIST:QUERy? Query ................................................................................................................ B-6
B.26 [SOURce:]LIST:VOLTage Command......................................................................................................... B-6
B.27 [SOURce:]LIST:VOLTage? Query ............................................................................................................. B-6
B.28 [SOURce:]LIST:VOLTage:POINts? Query ................................................................................................. B-6
B.29 MEASure[:SCALar]:CURRent[:DC]? Query............................................................................................... B-6
B.30 MEASure:VOLTage[:SCALar][:DC]? Query ............................................................................................... B-7
B.31 OUTPut[:STATe] Command....................................................................................................................... B-8
B.32 OUTPut[:STATe] Query ............................................................................................................................. B-8
B.33 OUTPut[:STATe]:PROTect:DELay Command ........................................................................................... B-8
B.34 OUTPut[:STATe]:PROTect:DELay? Query ................................................................................................ B-8
B.35 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude] Command ............................................................. B-8
B.36 [SOURce:]CURRent[:LEVel][:IMMediate][:AMPlitude]? Query .................................................................. B-8
B.37 [SOURce:]CURRent:LIMit:HIGH Command .............................................................................................. B-9
B.38 [SOURce:]CURRent:LIMit:HIGH? Query ................................................................................................... B-9
B.39 [SOURce:]CURRent:MODE Command ..................................................................................................... B-9
B.40 [SOURce:]CURRent:MODE? Query .......................................................................................................... B-9
B.41 [SOURce:]CURRent:PROTection[:LEVel] Command ................................................................................ B-10
B.42 [SOURce:]CURRent:PROTection[:LEVel]? Query ..................................................................................... B-10
B.43 [SOURce:]CURRent:[:LEVel]TRIGgered[:AMPlitude] Command .............................................................. B-11
B.44 [SOURce:]CURRent:[:LEVel]TRIGgered[:AMPlitude]? Query ................................................................... B-11
B.45 [SOURce:]FUNCtion:MODE Command..................................................................................................... B-11
B.46 [SOURce:]FUNCtion:MODE? Query ......................................................................................................... B-12
B.47 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude] Command.............................................................. B-12
B.48 [SOURce:]VOLTage[:LEVel][:IMMediate][:AMPlitude]? Query .................................................................. B-12
B.49 [SOURce:]VOLTage:LIMit:HIGH Command .............................................................................................. B-12
B.50 [SOURce:]VOLTage:LIMit:HIGH? Query ................................................................................................... B-12
B.51 [SOURce:]VOLTage:MODe Command .................................................................................................... B-13
B.52 [SOURce:]VOLTage:MODe? Query ......................................................................................................... B-13
B.53 [SOURce:]VOLTage:PROTection[:LEVel] Command................................................................................. B-13
B.54 [SOURce:]VOLTage:PROTection[:LEVel]? Query ..................................................................................... B-13
B.55 [SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPlitude] Command............................................................... B-13
B.56 [SOURce:]VOLTage:[:LEVel]TRIGgered[:AMPlitude]? Query ................................................................... B-14
B.57 STATus:OPERation:CONDition Query ...................................................................................................... B-14
B.58 STATus:OPERation:ENABle Command .................................................................................................... B-15
B.59 STATus:OPERation:ENABle? Query......................................................................................................... B-15
B.60 STATus:OPERation[:EVENt] Query........................................................................................................... B-15
B.61 STATus:PRESet Command....................................................................................................................... B-16

KLP SVC 020498 v
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B.62 STATus:QUEStionable[:EVENt]? Query.................................................................................................... B-16
B.63 STATus:QUEStionable:CONDition? Query ............................................................................................... B-16
B.64 STATus:QUEStionable:ENABle Command ............................................................................................... B-16
B.65 STATus:QUEStionable:ENABle? Query.................................................................................................... B-16
B.66 SYSTem:COMMunication:GPIB:ADDRess Command ............................................................................. B-17
B.67 SYSTem:COMMunication:GPIB:ADDRess ? Query................................................................................. B-17
B.68 SYSTem:COMMunication:SERial:BAUD CommanD................................................................................. B-17
B.69 SYSTem:COMMunication:SERial:BAUD? Query ...................................................................................... B-17
B.70 SYSTem:COMMunication:SERial:ECHO Command................................................................................ B-17
B.71 SYSTem:COMMunication:SERial:ECHO? Query .................................................................................... B-17
B.72 SYSTem:COMMunication:SERial:ENABle Command ............................................................................. B-17
B.73 SYSTem:COMMunication:SERial:ENAB? Query..................................................................................... B-17
B.74 SYSTem:COMMunication:SERial:PACE Command ................................................................................. B-17
B.75 SYSTem:COMMunication:SERial:PACE? Query ...................................................................................... B-18
B.76 SYSTem:COMMunication:SERial:PROMpt Command.............................................................................. B-18
B.77 SYSTem:COMMunication:SERial:PROMpt? Query .................................................................................. B-18
B.78 SYSTem:ERRor? Query ............................................................................................................................ B-18
B.79 SYSTem:ERRor:CODE? Query................................................................................................................. B-18
B.80 SYSTem:ERRor:CODE:ALL? Query ......................................................................................................... B-18
B.81 SYSTem:KLOCk Command....................................................................................................................... B-18
B.82 SYSTem:KLOCk? Query ........................................................................................................................... B-19
B.83 SYSTem:LANGuage Command ................................................................................................................ B-19
B.84 SYSTem:LANGuage? Query ..................................................................................................................... B-20
B.85 SYSTem:PASSword:CENable Command ................................................................................................. B-20
B.86 SYSTem:PASSword:CDISable Command ................................................................................................ B-20
B.87 SYSTem:PASSword:NEW Command ...................................................................................................... B-20
B.88 SYSTem:PASSword:STATe? Query.......................................................................................................... B-20
B.89 SYSTem:SECurity:IMMediate Command .................................................................................................. B-20
B.90 SYSTem:SET Command ........................................................................................................................... B-20
B.91 SYSTem:SET? Query ................................................................................................................................ B-21
B.92 SYSTem:VERSion Query .......................................................................................................................... B-21
B.93 TRIGger:SOURce Command .................................................................................................................... B-21

LIST OF FIGURES
FIGURE TITLE PAGE
vi KLPSVC 073008
1-1 KLP Series Power Supply ........................................................................................................................... viii
1-2 KLP Operating Regions.............................................................................................................................. 1-2
1-3 KLP Series Power Supply, Mechanical Outline Drawing ........................................................................... 1-6
2-1 KLP Series, Front Panel Controls and Indicators....................................................................................... 2-1
2-2 KLP Series, Rear Panel Switch and Connectors ....................................................................................... 2-2
2-3 Remote Sensing......................................................................................................................................... 2-10
2-4 Series Connection using Remote Sensing................................................................................................. 2-11
2-5 Parallel Connections Using Remote Sensing............................................................................................. 2-11
3-1 RS 232 Implementation.............................................................................................................................. 3-16
3-2 Message Structure ..................................................................................................................................... 3-23
3-3 Tree Diagram of SCPI Commands Used with KLP Power Supply............................................................. 3-25
3-4 Status Reporting Structure......................................................................................................................... 3-27
3-5 Typical Example Of KLP Power Supply Program Using SCPI Commands ............................................... 3-29
3-6 Analog Programming of Output Voltage or
Current using Resistance ....................................................................................................................... 3-30
3-7 Analog Programming of Output Voltage or Current using Voltage............................................................. 3-31
A-1 GPIB Commands ....................................................................................................................................... A-3
B-1 Programming the Output ............................................................................................................................ B-3
B-2 Using LIST Commands and Queries.......................................................................................................... B-7
B-3 Programming Virtual Models ...................................................................................................................... B-10
B-4 Programming as a Current Stabilizer ......................................................................................................... B-11
B-5 Programming as Voltage Stabilizer ............................................................................................................ B-14
B-6 Using Status Commands and Queries ....................................................................................................... B-15
B-7 Using System Commands and Queries ..................................................................................................... B-19

KLP SVC 020498 vii
LIST OF TABLES
TABLE TITLE PAGE
1-1 Model Parameters .......................................................................................................................................1-2
1-2 KLP Specifications ......................................................................................................................................1-3
1-3 Equipment Supplied ....................................................................................................................................1-10
1-4 Accessories .................................................................................................................................................1-11
1-5 Safety Symbols ...........................................................................................................................................1-11
2-1 Controls, and Indicators ..............................................................................................................................2-1
2-2 Analog I/O Switch Functions .......................................................................................................................2-3
2-3 IEEE 488 Port Connector (J4) Pin Assignments .........................................................................................2-3
2-4 RS232 Port Connector (J3) Pin Assignments .............................................................................................2-4
2-5 Rear Terminal block Assignments ..............................................................................................................2-4
2-6 Analog I/O Connector (J2) Pin Assignments ..............................................................................................2-4
2-7 Input Current Service Rating and Conductor Sizes ....................................................................................2-7
3-1 Power-up Built-in Test Error Codes ............................................................................................................3-2
3-2 IEEE 488 (GPIB) Bus Interface Functions ..................................................................................................3-18
3-3 IEEE 488 (GPIB) Bus Command Mode Messages .....................................................................................3-18
3-4 IEEE 488 (GPIB) Bus Data Mode Messages ..............................................................................................3-19
3-5 Rules Governing Shortform Keywords ........................................................................................................3-22
4-1 Factory Default Calibration Passwords .......................................................................................................4-8
A-1 IEEE 488.2 Command/query Index ........................................................................................................... A-1
A-2 Standard Event Status Enable Register and Standard Event Status Register Bits ................................... A-1
A-3 Service Request Enable and Status Byte Register Bits ............................................................................. A-4
B-1 SCPI Subsystem Command/query Index .................................................................................................. B-1
B-2 Operation Condition Register, Operation Enable Register,
and Operation Event Register Bits .......................................................................................................... B-14
B-3 Questionable Event Register, Questionable Condition Register
and Questionable Condition Enable Register Bits .................................................................................. B-16
B-4 Error Messages .......................................................................................................................................... B-21

viii KLP073008
FIGURE 1-1. KLP SERIES POWER SUPPLY

KLP 073008 1-1
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation, operation and service of the KLP series of
1200W output power, stabilized voltage or current, d-c power supplies manufactured by
KEPCO, Inc., Flushing, New York, U.S.A.
DANGEROUS AND LETHAL POTENTIALS ARE PRESENT,
BOTH WITHIN THIS POWER SUPPLY, AND AT THE OUTPUT!
Before proceeding to use the power supply, read this manual very care-
fully. Caution must be used when working with, and making connections
to, this power supply. Use only wires with the proper voltage rating for
high voltage connections.
1.2 GENERAL DESCRIPTION
The KLP Power Supply Series (Figure 1-1) are autoranging, automatic crossover, 1200 watt
voltage/current stabilizers with a full rectangular output characteristic within the voltage and cur-
rent ranges listed in Table 1-1.
Six models are available, as listed in Table 1-1. For each model a multitude of virtual models
can be configured from the front panel. The rated voltage, maximum current at rated voltage,
rated current and maximum voltage at rated current parameters define the virtual models avail-
able within the limit of 1200 Watts of output power (see Figure 1-2).
KLP power supplies operate from wide range 88-255V a-c, 45-66 Hz or 125-420V d-c input
source power. Since there are no internal adjustments, KLP Power Supplies offer excellent out-
put voltage/current stability and easy calibration.
Output voltage and current are displayed on independent LED displays. Control of the KLP can
be either local, via the front panel controls and displays, or remote - using either analog signals
(applied to the Analog I/O Port), or digital programming via either the IEEE 488.2 (GPIB) or
RS 232 communication bus. Digital control is done with 12 bits of resolution over the entire volt-
age/current range.
The full-rack cross section permits mounting in a standard 19-inch wide rack (for optional chas-
sis slides, see Table 1-4). Load connections are made at the rear panel. Sensing, monitor, and
current share terminals are also available at the rear panel. Outline dimensions are provided in
Figure 1-3.
1.3 SPECIFICATIONS
Table 1-1 lists the parameters applicable to individual models. Table 1-2 lists general specifica-
tions applicable to all models except where otherwise noted.
WARNING

1-2 KLP 073008
FIGURE 1-2. KLP OPERATING REGIONS
TABLE 1-1. MODEL PARAMETERS
Model number
Rated
Voltage
Range(1)
Maximum
current for
rated voltage
Minimum
programmable
current
Rated
Current
Range(1)
Maximum
voltage for
rated current
Ripple and noise Efficiency
@115 Va-c
rms p-p(2)
KLP 20-120-1200(3) 0-20V 60A@20V 1.6A 0-120A 10V@120A 10 mV 75 mV 82%
KLP 36-60-1200(3) 0-36V 33.3A@36V 0.8A 0-60A 20V@60A 10 mV 125 mV 83%
KLP 75-33-1200 0-75V 16A@75V 0.4A 0-33.3A [email protected] 10 mV 125 mV 84%
KLP 150-16-1200 0-150V 8A@150V 0.2A 0-16A 75V@16A 10 mV 125 mV 86%
KLP 300-8-1200 0-300V 4A@300V 0.1A 0-8A 150V@8A 20 mV 300 mV 87%
KLP 600-4-1200(3) 0-600V 2A@600V 0.05A 0-4A 300V@4A tbd tbd 88%
(1) The maximum current and voltage are constrained by the 1200 watt power limitation, see Figure 1-2.
(2) Bandwidth: 20MHz; low frequency ripple may be higher at loads less than 30 Watts..
(3) Not all models available at this time. Please contact factory for additional information.

KLP 073008 1-3
TABLE 1-2. KLP SPECIFICATIONS
SPECIFICATION RATING/DESCRIPTION CONDITION
INPUT CHARACTERISTICS
a-c voltage
nominal 110-240 Va-c Single Phase
range 100-255 Va-c Wide Range; contact factory for opera-
tion to 265V a-c.
d-c voltage range 125-420 Vd-c No regulatory agency approval
Frequency nominal range 50-60 Hz
maximum 45-440 Hz Increased Leakage above 66 Hz
Power Factor typical 0.99 meets EN 61000-3-2
Maximum Input Current 120 Va-c 13A rms Rated load (1200W)
240 Va-c 6.5A rms Rated load (1200W)
Inrush Current 265 Va-c 40A Peak
132 Va-c 20A Peak
Input Fusing Circuit Breaker 2-line
Low a-c Protection Self protected No Fixed Limits
Output hold up typical 10 milliseconds Ride Through
Leakage Current 115 Va-c, 60Hz 5mA
230 Va-c 50Hz 10mA
OUTPUT CHARACTERISTICS
Type of stabilizer CV/CL Voltage/Current
Adjustment range voltage 0-100% of rated voltage no minimum load required
current 0-100% of rated current no minimum load required
Source effect voltage 0.01% Emax over full source range
current 0.01% Imax
Load effect voltage 0.01% Emax over full load current range
current 0.02% Imax
Temperature effect voltage 0.02%/deg C 0-50 deg C
current 0.05%/deg C
Time effect (drift) voltage 0.05%/24hr after 30 min warmup
current 0.05%/24hr
Error sensing 0.25 volts per wire above rated output
Isolation voltage 600 Vd-c or peak either output terminal to ground
Transient recovery
for load change
excursion 1% of Emax 50% load step 2A/microsecond max
recovery 0.2 msec return to 0.1% of setting
Turnon/turnoff overshoot same as load transient response limits
Overvoltage protection voltage programmable latched (1)
Overcurrent protection current programmable latched (1)
Overtemperature protection Shutdown latched (1)
Open Load wire protection Shutdown latched (1)
Parallel operation Active load sharing within 5% of Io rated Up to 5 units, maximum

1-4 KLP 073008
GENERAL (ENVIRONMENTAL) SPECIFICATIONS
Temperature operating -20 to +50 deg C Rated load. Derate at 25W per °C
between 50 and 70°C.
storage -40 to +85 deg C
Cooling 3 internal d-c fans exhaust to the rear
Humidity 0 to 95% RH non condensing
Shock 20g, 11msec +/- 50% half sine non operating
Vibration 5 -10 Hz 10mm double amplitude 3-axes, non-operating
10-55 Hz 2g 3-axes, non-operating
Altitude sea level to 10000 ft. 0-3,000 ft: 100%, linear derating to
70% of power at 10,000ft.
PHYSICAL CHARACTERISTICS
Dimensions English 1.75'H x 19"W x 17.5"D depth excluding connectors and termi-
nal blocks (See Figure 1-3.)
metric 44.45 x 482.6 x 443.7 mm
Weight English 15 lbs
metric 6.82kg
Source power connector IEC 320-C19 appliance inlet 250 Va-c, 16A (VDE);
125V a-c, 20A (UL)
Load connections 8-36V models Nickel plated copper busbars Provision for safety covers
75-600V models Shocksafe Euroblock
Analog programming port. 15 pin D-sub
Digital programming port primary Standard GPIB connector IEEE 488.2 (GPIB)
secondary 9 pin D-sub RS 232
Direct output control 5 position low profile Euroblocks
PROGRAMMING CHARACTERISTICS - LOCAL
Local control rotary encoders panel mounted
Local control resolution Coarse ~100 LSB/step depress control for Fine resolution
Fine 1 LSB/step
Setting range 0-100% of rating KLP will decrement limit to maintain
1200 W maximum
Power up settings voltage defaults to zero DIP switch 3 set to off. (If DIP switch 3
set to ON, power up voltage and cur-
rent set to last value set prior to power
down.)
current defaults to minimal value
Protection Limits (2) Emax 20-120% Programmable; accessed via front
panel protect switch or IEE 488.2 bus
command.
Imax 60-120%
NOTES:
(1) Requires the a-c input to be recycled for restart
(2) OVP and OCP limit adjustment is disabled in Remote Analog Mode
TABLE 1-2. KLP SPECIFICATIONS (Continued)
SPECIFICATION RATING/DESCRIPTION CONDITION

KLP 073008 1-5
PROGRAMMING CHARACTERISTICS - ANALOG
Analog remote control selection Activate with jumper at analog program-
ming connector
Recognized during power up.
isolation Safety Extra Low Voltage (SELV) referenced to chassis
Programming by voltage voltage 0-10V Programmable
current minimal value-10V
Programming by resistance voltage 0-10K ohms Programmable
current 0-10K ohms
Readback 0-10V proportional signal Proportional to analog control volt-
age/resistance
Remote inhibit TTL compatible
Composite status flag Isolated form C contacts Programmable functions (PAR. 2.7.10)
Programming time 20 milliseconds 10% to 90% Eout
PROGRAMMING CHARACTERISTICS - DIGITAL
Digital remote control isolation Safety Extra Low Voltage (SELV) referenced to chassis
format compatible with SCPI protocols W95, W98 and NT operating systems
Programming resolution 0.024% of Emax and Ilim
Programming accuracy 0.05% of Emax and Ilim
Readback resolution 0.024% of Emax and Ilim
Readback accuracy 0.1% of Emax and Ilim
Status reporting OVP, OCP, OTP, output lead fault
(OLF), fan failure, power loss
See PAR. 1.4.4 and 1.4.9
NOTES:
(1) Requires the a-c input to be recycled for restart
(2) OVP and OCP limit adjustment is disabled in Remote Analog Mode
TABLE 1-2. KLP SPECIFICATIONS (Continued)
SPECIFICATION RATING/DESCRIPTION CONDITION

1-6 KLP 073008
FIGURE 1-3. KLP SERIES POWER SUPPLY, MECHANICAL OUTLINE DRAWING (SHEET 1 OF 2)
R\DWG\MECH\3010266