KEPCO BHK-MG Series User manual

IMPORTANT NOTES:
1) This manual is valid for the following Model and associated serial numbers:
MODEL SERIAL NO. REV. NO.
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 par-
ticular 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.
SERIES BHK-MG
40 WATT POWER SUPPLY
1/2 RACK VOLTAGE/CURRENT-STABILIZED DC SOURCE
BHK-MG 40 WATT
POWER SUPPLY
©2016, KEPCO, INC
P/N 243-0970-r6

A
228 1782 Dec of Conf BHK MG 40W (1/2 Rack) 200W (Full Rack)
Declaration of Conformity
Application of Council directives:
2006/95/EC (LVD)
2004/108/EC (EMC
Standard to which Conformity is declared:
IEC61010-1, 3rd Edition Safety requirements for electrical equipment for
measurement, control, and laboratory use
(designed to meet)
EN55011 (Class A, conducted and radiated)
(radiated is designed to meet)
Limits and Methods of Measurement of Radio
Disturbance Characteristics of Information
Technology Equipment (designed to meet)
EN61000-4-11, EN61000-4-4, EN61000-4-2,
EN61000-4-5, IEC61000-4-3, IEC61000-4-6,
IEC61000-4-8
Voltage Dips, Fast Transient_EFT,
ESD, Surge Immunity, Radiated Immunity
(designed to meet), Conducted Immunity,
Magnetic Field Immunity (designed to meet)
Manufacturer's Name:
Manufacturer's Address:
KEPCO, INC.
131-38 SANFORD AVENUE
FLUSHING NY 11355
USA
Importer's Name:
Importer's Address:
Type of Equipment: Component Power Supply
Model Series
BHK-MG 40W (1/2 Rack), 200W
(Full Rack), all models, all
options
Model No.:
Year of Manufacture:
I, the undersigned, declare that the product specified above, when used in
conjunction with the conditions of conformance set forth in the product
instruction manual, complies with the requirements of the Low Voltage Directive
2006/95/EC, which forms the basis for application of the CE Mark to this
product.
Place: Kepco, Inc.
131-38 Sanford Ave.
Flushing NY 11355
USA
Date:
Mark Kupferberg
(Full Name)
Executive Vice President
(position)
REPRESENTATIVECOPY

B228-XXXX COND/CONFORM 030916
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 Cl. 6, Cl. 7, Cl.8, Cl. 9 and EN61010-
1 annex F)
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, and as such depends upon proper con-
nection to protective earth for safety from electric shock. (EN61010-1 Cl. 6.5.4)
4. This power supply is intended for use as part of equipment meant for test, measurement and labora-
tory 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 con-
nection. See wiring section of this manual for complete electrical wiring instructions. (EN61010-1 Cl.
6.5.4 and Cl.6.10.1)
5. This power supply has secondary output circuits that are considered hazardous, and which reach 40
VA at a potential of 300V or more.
6. The output wiring terminals of this power supply have not been evaluated for field wiring and, there-
fore, must be properly configured by the end product manufacturer prior to use.
7. 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 Cl.
9.6.2)
8. 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) 030916 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.
This product is factory set for the nominal a-c mains voltage indicated by the Voltage
Range Selector switch located adjacent to the source power connection on the prod-
uct's rear panel. To reconfigure the product input for other nominal mains voltages as
listed herein, follow the applicable instructions shown in this manual.
NOTE: Source power must be removed from the product prior to changing the set-
ting of the Voltage Range Selector switch.
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
!
!
!
!
!

BHK 1/2 RACK 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.......................................................................................................................................... 1-2
1.4 Features.................................................................................................................................................. 1-9
1.4.1 Local Control...................................................................................................................................... 1-9
1.4.2 Remote Control.................................................................................................................................. 1-9
1.4.2.1 Digital Programming .................................................................................................................... 1-9
1.4.2.2 Analog Programming................................................................................................................... 1-9
1.4.2.3 Analog Readback......................................................................................................................... 1-9
1.4.3 Digital Calibration............................................................................................................................... 1-9
1.4.4 Overvoltage/Overcurrent Protection.................................................................................................. 1-10
1.4.5 User-defined Voltage/Current Limits.................................................................................................. 1-10
1.4.6 Nonvolatile Storage of Programmed Sequences or Active Settings.................................................. 1-10
1.4.7 Current Measurement Scale.............................................................................................................. 1-11
1.4.8 Fast Mode/Slow Mode Selection....................................................................................................... 1-11
1.4.9 Built-in Protection............................................................................................................................... 1-11
1.4.10 Analog Readback and Flag Signals Available for Customer Use...................................................... 1-12
1.4.11 External Trigger Port.......................................................................................................................... 1-12
1.4.12 Current Sink Capability...................................................................................................................... 1-13
1.5 Equipment Supplied................................................................................................................................ 1-13
1.6 Accessories............................................................................................................................................. 1-14
1.7 Safety...................................................................................................................................................... 1-14
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection....................................................................................................................... 2-1
2.2 Terminations and Controls ...................................................................................................................... 2-1
2.3 Source Power Requirements .................................................................................................................. 2-6
2.4 Cooling.................................................................................................................................................... 2-6
2.5 Preliminary Operational Check................................................................................................................ 2-7
2.6 Installation............................................................................................................................................... 2-8
2.6.1 Bench Top Use.................................................................................................................................. 2-8
2.6.2 Rack Mounting................................................................................................................................... 2-9
2.7 Wiring Instructions................................................................................................................................... 2-9
2.7.1 Safety Grounding............................................................................................................................... 2-9
2.7.2 Source Power Connections............................................................................................................... 2-9
2.7.3 D-C Output Grounding....................................................................................................................... 2-9
2.7.4 Power Supply/Load Interface............................................................................................................. 2-10
2.7.4.1 Cable Recommendations............................................................................................................. 2-11
2.7.5 Load Connection - General................................................................................................................ 2-11
2.7.5.1 Local Sensing/Remote Sensing Select........................................................................................ 2-12
2.7.5.2 Fast Mode/Slow Mode Select...................................................................................................... 2-12
2.7.5.3 Grounding Network Configuration................................................................................................ 2-12
2.7.5.4 Positive Output, Negative Terminal Grounded ............................................................................ 2-13
2.7.5.5 Negative Output, Positive Terminal Grounded ............................................................................ 2-13
2.8 Operating Configuration.......................................................................................................................... 2-13
2.9 Status Port............................................................................................................................................... 2-14
SECTION 3 - OPERATION
3.1 General.................................................................................................................................................... 3-1
3.2 Local Mode Operation............................................................................................................................. 3-1
3.2.1 Front Panel Keypad and LCD............................................................................................................ 3-1
3.2.1.1 Command Entry Status................................................................................................................ 3-1
3.2.1.2 Data Entry Status......................................................................................................................... 3-1
3.2.1.3 Display (LCD)............................................................................................................................... 3-1
3.2.1.4 Keypad Functions........................................................................................................................ 3-2

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TABLE OF CONTENTS
SECTION PAGE
3.2.2 Turning the Power Supply On........................................................................................................... 3-4
3.2.3 Error Conditions................................................................................................................................ 3-5
3.2.4 Setting Local Mode........................................................................................................................... 3-5
3.2.5 Adjusting LCD Contrast .................................................................................................................... 3-6
3.2.6 Enabling/Disabling Audible Beeps.................................................................................................... 3-6
3.2.7 Enabling/Disabling DC Output Power............................................................................................... 3-6
3.2.7.1 Disabling DC Output ................................................................................................................... 3-6
3.2.7.2 Disabling DC Output Using Remote On/Off Port ........................................................................ 3-6
3.2.7.3 Remote Shutdown using External Trigger Port........................................................................... 3-7
3.2.7.4 Power Up DC Output Control...................................................................................................... 3-7
3.2.8 Reset Operation................................................................................................................................ 3-7
3.2.8.1 Setting Power-Up & Reset Current............................................................................................. 3-7
3.2.9 Setting Output Voltage or Current..................................................................................................... 3-8
3.2.10 Setting Overvoltage or Overcurrent Protection................................................................................. 3-8
3.2.11 Changing Maximum Voltage or Current Value ................................................................................. 3-9
3.2.12 Storing Power Supply Output Settings.............................................................................................. 3-9
3.2.13 Recalling Stored Output Settings...................................................................................................... 3-10
3.2.14 Firmware Version.............................................................................................................................. 3-10
3.2.15 Local Mode Programming of the Power Supply................................................................................ 3-10
3.2.15.1 Creating or Modifying a Program (Program Edit Mode).............................................................. 3-10
3.2.15.1.1 Modifying Programmed Time Interval.....................................................................................3-12
3.2.15.1.2 Time Interval Accuracy...........................................................................................................3-12
3.2.15.2 Running a Program..................................................................................................................... 3-12
3.2.15.3 Stepping Through a Program...................................................................................................... 3-12
3.2.15.4 Cycling a Program....................................................................................................................... 3-13
3.2.15.5 Running a Program Once ........................................................................................................... 3-13
3.2.15.6 Stopping a Running Program...................................................................................................... 3-13
3.2.15.7 Sample Program......................................................................................................................... 3-13
3.2.16 Calibration......................................................................................................................................... 3-13
3.3 Remote Mode Programming Using SCPI commands via IEEE 488 (GPIB). Bus .................................. 3-14
3.3.1 IEEE 488 (GPIB) Bus Protocol ......................................................................................................... 3-14
3.3.2 DCL Control...................................................................................................................................... 3-15
3.3.3 Changing the GPIB Address............................................................................................................. 3-16
3.3.4 External Trigger ................................................................................................................................ 3-16
3.3.5 Programming Techniques to Optimize performance ........................................................................ 3-16
3.3.5.1 Programming Voltage/Current Limit and Current/Voltage Limit.................................................. 3-16
3.3.5.2 Making Sure the Previous Command is Complete ..................................................................... 3-17
3.4 BHK-MG VISA Instrument driver............................................................................................................ 3-18
3.5 RS232-C Operation................................................................................................................................ 3-19
3.5.1 Setting RS 232 Baud Rate................................................................................................................ 3-19
3.5.2 Serial INterface................................................................................................................................. 3-19
3.5.3 RS 232 Implementation .................................................................................................................... 3-19
3.5.3.1 Echo Mode.................................................................................................................................. 3-20
3.5.3.2 Prompt Method............................................................................................................................ 3-21
3.5.3.3 XON XOFF Method..................................................................................................................... 3-21
3.5.4 Isolating RS 232 Communication Problems ..................................................................................... 3-21
3.6 Programming Techniques to Optimize performance.............................................................................. 3-22
3.6.1 Example of Proper Programming...................................................................................................... 3-22
3.6.2 Explanation of Programming Techniques......................................................................................... 3-22
3.7 SCPI Programming................................................................................................................................. 3-22
3.7.1 SCPI Messages................................................................................................................................ 3-23
3.7.2 Common Commands/Queries .......................................................................................................... 3-23
3.7.3 SCPI Subsystem Command/Query Structure................................................................................... 3-23
3.7.3.1 ABORt Subsystem...................................................................................................................... 3-23
3.7.3.2 INITiate Subsystem..................................................................................................................... 3-23
3.7.3.3 LIST Subsystem.......................................................................................................................... 3-23
3.7.3.4 MEASure Subsystem.................................................................................................................. 3-23
3.7.3.5 OUTPut Subsystem .................................................................................................................... 3-23

BHK 1/2 RACK 020498 iii
TABLE OF CONTENTS
SECTION PAGE
3.7.3.6 Instrument Subsystem................................................................................................................. 3-24
3.7.3.7 STATus Subsystem..................................................................................................................... 3-24
3.7.3.8 System Subsystem...................................................................................................................... 3-24
3.7.3.9 TRIGger subsystem..................................................................................................................... 3-24
3.7.3.10 [SOURce:]VOLTage and [SOURce:]CURRent Subsystems....................................................... 3-24
3.7.3.11 CALibrate Subsystem.................................................................................................................. 3-24
3.7.4 Program Message Structure.............................................................................................................. 3-26
3.7.4.1 Keyword....................................................................................................................................... 3-26
3.7.4.2 Keyword Separator...................................................................................................................... 3-27
3.7.4.3 Query Indicator ............................................................................................................................ 3-27
3.7.4.4 Data ............................................................................................................................................. 3-27
3.7.4.5 Data Separator............................................................................................................................. 3-27
3.7.4.6 Message Unit Separator.............................................................................................................. 3-27
3.7.4.7 Root Specifier .............................................................................................................................. 3-27
3.7.4.8 Message Terminator.................................................................................................................... 3-28
3.7.5 Understanding The Command Structure........................................................................................... 3-28
3.7.6 Program Message Syntax Summary................................................................................................. 3-29
3.7.7 SCPI Program Examples................................................................................................................... 3-29
3.8 Remote Programming Using Analog Programming Terminals................................................................ 3-30
3.8.1 Analog Programming Warnings and Cautions................................................................................... 3-33
3.8.2 Programming with external resistance............................................................................................... 3-34
3.8.2.1 Voltage Mode............................................................................................................................... 3-36
3.8.2.2 Current Mode............................................................................................................................... 3-37
3.8.3 Programming with external voltage using a low impedance Voltage source..................................... 3-37
3.8.3.1 Voltage Mode............................................................................................................................... 3-41
3.8.3.2 Current Mode............................................................................................................................... 3-42
3.8.4 Programming with external voltage using a high impedance, low level (1V) Voltage source............ 3-42
3.8.4.1 Voltage Mode............................................................................................................................... 3-45
3.8.4.2 Current Mode............................................................................................................................... 3-45
3.8.5 Programming with external current source (1 mA)............................................................................ 3-46
3.8.5.1 Voltage Mode............................................................................................................................... 3-48
3.8.5.2 Current Mode............................................................................................................................... 3-48
3.9 Operating Modes..................................................................................................................................... 3-49
3.9.1 Slow/Fast mode of operation............................................................................................................. 3-49
3.9.2 Series operation................................................................................................................................. 3-51
3.9.2.1 Automatic series operation .......................................................................................................... 3-52
3.9.2.2 Master-slave series operation (Automatic Tracking).................................................................... 3-55
3.9.2.2.1 Voltage Mode Operation.........................................................................................................3-55
3.9.2.2.2 Current Mode Operation .........................................................................................................3-58
3.9.3 Parallel operation............................................................................................................................... 3-60
3.9.3.1 Automatic parallel operation ........................................................................................................ 3-61
3.9.3.2 Master-slave parallel operation.................................................................................................... 3-63
3.9.3.2.1 Voltage Mode Operation.........................................................................................................3-64
3.9.3.2.2 Current Mode Operation .........................................................................................................3-66
SECTION 4 - CALIBRATION
4.1 General.................................................................................................................................................... 4-1
4.2 Equipment Required................................................................................................................................ 4-1
4.3 Calibration Description............................................................................................................................ 4-1
4.4 Calibration Using Front Panel Keys ........................................................................................................ 4-2
4.4.1 Voltage Calibration ............................................................................................................................ 4-2
4.4.2 Current Calibration............................................................................................................................. 4-3
4.5 Calibration Using IVI Driver..................................................................................................................... 4-4
4.5.1 Setup ................................................................................................................................................. 4-4
4.5.2 Main Control Panel............................................................................................................................ 4-5
4.5.3 Calibration Controls........................................................................................................................... 4-6

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TABLE OF CONTENTS
SECTION PAGE
4.5.4 Calibration Procedure....................................................................................................................... 4-7
4.6 Changing the Calibration Password ....................................................................................................... 4-9
4.7 Restoring Previous Calibration Values................................................................................................... 4-9
4.8 Restoring Factory Calibration Values..................................................................................................... 4-9
4.9 Calibration Storage................................................................................................................................. 4-10
APPENDIX A - IEEE 488.2 COMMAND/QUERY DEFINITIONS
A.1 Introduction............................................................................................................................................. A-1
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-1
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-2
A.9 *RCL — Recall Command...................................................................................................................... A-2
A.10 *RST — Reset Command....................................................................................................................... A-3
A.11 * SAV — Save Command....................................................................................................................... A-3
A.12 *SRE — Service Request Enable Command......................................................................................... A-4
A.13 *SRE? — Service Request Enable Query.............................................................................................. A-4
A.14 *STB? — Status Byte Register Query.................................................................................................... A-4
A.15 *TRG — Trigger Command.................................................................................................................... A-4
A.16 *TST? — Self Test Query....................................................................................................................... A-4
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS
B.1 Introduction............................................................................................................................................. B-1
B.2 Numerical Values.................................................................................................................................... B-2
B.3 ABORt Command................................................................................................................................... B-2
B.4 CAL Commands and Queries................................................................................................................. B-2
B.5 DISPlay:CONTrast Command................................................................................................................ B-2
B.6 DISPlay:CONTrast? Query..................................................................................................................... B-2
B.7 DISPlay:MODE Command ..................................................................................................................... B-4
B.8 DISPlay:MODE? Query.......................................................................................................................... B-4
B.9 DISPlay:TEXT Command....................................................................................................................... B-4
B.10 DISPlay:TEXT? Query............................................................................................................................ B-4
B.11 INITiate[:IMMediate] Command.............................................................................................................. B-4
B.12 INITiate:CONTinuous Command............................................................................................................ B-4
B.13 INITiate:CONTinuous? Query................................................................................................................. B-5
B.14 INSTrument:STATe Command............................................................................................................... B-5
B.15 INSTrument:STATe? Query.................................................................................................................... B-5
B.16 [SOURce:]LIST:CLEar Command.......................................................................................................... B-5
B.17 [SOURce:]LIST:COUNt Command......................................................................................................... B-5
B.18 [SOURce:]LIST:COUNt? Query.............................................................................................................. B-5
B.19 [SOURce:]LIST:COUNt:SKIP Command................................................................................................ B-5
B.20 [SOURce:]LIST:COUNt:SKIP? Query .................................................................................................... B-6
B.21 [SOURce:]LIST:CURRent Command..................................................................................................... B-6
B.22 [SOURce:]LIST:CURRent? Query.......................................................................................................... B-6
B.23 [SOURce:]LIST:CURRent:POINts? Query............................................................................................. B-6
B.24 [SOURce:]LIST:DIRection Command..................................................................................................... B-6
B.25 [SOURce:]LIST:DIRection? Query ......................................................................................................... B-6
B.26 [SOURce:]LIST:DWELl Command......................................................................................................... B-6
B.27 [SOURce:]LIST:DWELl? Query.............................................................................................................. B-7
B.28 [SOURce:]LIST:DWELl:POINts? Query ................................................................................................. B-7
B.29 [SOURce:]LIST:QUERy Command........................................................................................................ B-7
B.30 [SOURce:]LIST:QUERy? Query............................................................................................................. B-7