Page 1: Power Supply
Data subject to change without notice. KEPCO ® ©2009, KEPCO, INC P/N 243-1027R9f THE POWER SUPPLIER™ KEPCO, INC. ! 131-38 SANFORD AVENUE ! FLUSHING, NY. 11355 U.S.A. ! TEL (718) 461-7000 ! FAX (718) 767-1102 email: hq@kepcopower.com ! World Wide Web: http://www.kepcopower.com...
Page 3: Declaration Of Conformity
93/68/EEC (CE mark) Standard to which Conformity is declared: EN61010-1:1993 (Safety requirements for electrical equipment for measurement, control and laboratory use) KEPCO INC. Manufacturer's Name and Address: 131-38 SANFORD AVENUE FLUSHING, N.Y. 11355 USA Importer's Name and Address: Component Power Supply Type of Equipment: Model No.:...
Page 4 There are no user or operator serviceable parts within the product enclosure. Refer all servicing to qualified and trained Kepco service technicians. 228-1529 COND/CONFORM 080709...
Page 5: Safety Instructions
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: There are no operator serviceable parts or adjustments within the product enclosure.
Page 6: Safety Messages
Service must be referred to authorized personnel. Using the power supply in a manner not specified by Kepco. Inc. may impair the protection provided by the power supply. Observe all safety precautions noted throughout this manual. The following table lists symbols used on the power supply or in this manual where applicable.
Page 7: Warnings And Cautions
LIST OF WARNINGS AND CAUTIONS PAGE WARNING/CAUTION WARNING: 3-19 For inductive loads, and especially superconducting magnet type loads, the inherent offset of the BOP in the OFF state may generate significant current in the circuit. A properly rated switch in parallel with a resistor must be connected between the power supply and the load.
Page 8 LIST OF WARNINGS AND CAUTIONS PAGE WARNING/CAUTION CAUTION: When an external shut-down signal is sent to the unit, the shut-down con- dition is latched and the red FAULT indicator on the front panel is ON. To resume normal operation it is necessary to cycle power off, then on (pre- ferred) or briefly press the RESET key on the front panel.
Page 9 LIST OF WARNINGS AND CAUTIONS PAGE WARNING/CAUTION 3-12 CAUTION: When the ADJUST control is rotated, the active parameter is immediately effective if the output is enabled (on = STANDBY indicator not lit). The voltage/current applied to the load changes as the ADJUST control is ro- tated.
Page 11: Table Of Contents
TABLE OF CONTENTS SECTION PAGE SECTION 1 - INTRODUCTION Scope of Manual ............................. 1-1 General Description..........................1-1 Specifications ............................1-1 Local Control ............................1-13 Remote Control ............................1-13 Features ..............................1-13 1.6.1 Digital Calibration..........................1-13 1.6.2 voltage/current Protection........................1-13 1.6.3 Waveforms............................
Page 12 TABLE OF CONTENTS SECTION PAGE 3.2.4 How to Access the menus ........................ 3-6 3.2.4.1 Overall menu Structure ....................... 3-6 3.2.4.2 How to Modify a Parameter......................3-7 3.2.4.3 Password Setup.......................... 3-7 3.2.4.4 How to Access a Password Protected Menu ................3-8 3.2.5 Operator Convenience Functions (Display Menu) ................
Page 13 TABLE OF CONTENTS SECTION PAGE Digital Remote Mode Programming ......................3-41 3.5.1 Operating Features Available only by Remote Commands............... 3-41 3.5.1.1 Expanded Waveforms and Programs ..................3-41 3.5.2 Programming Techniques to Optimize performance ................. 3-41 3.5.2.1 Programming Voltage/Current Limit and Current/Voltage Limit........... 3-41 3.5.2.2 Making Sure the Previous Command is Complete ..............
Page 14 TABLE OF CONTENTS SECTION PAGE 3.6.6 Program Message Syntax Summary ....................3-60 3.6.7 Status Reporting ..........................3-60 3.6.7.1 Status Reporting Structure......................3-60 3.6.7.2 Operational Status Register ......................3-62 3.6.7.3 QUEStionable Status Register....................3-62 3.6.8 SCPI Program Examples ........................3-63 SECTION 4 - CALIBRATION General ..............................
Page 15 TABLE OF CONTENTS SECTION PAGE B.16 OUTP :MODE? Query.......................... B-7 ediate litude B.17 [SOUR :]CURR [:LEV ][:IMM ][:AMP ] Command ............B-7 ediate litude B.18 [SOUR :]CURR [:LEV ][:IMM ][:AMP ] Query ............. B-7 B.19 [SOUR :]CURR [:LEV ]:LIM [:BOTH] Command................B-7 B.20 [SOUR :]CURR...
Page 16 TABLE OF CONTENTS SECTION PAGE B.74 [SOUR :]LIST:TRIG Command...................... B-19 B.75 [SOUR :]LIST:VOLT Command ....................B-19 B.76 [SOUR :]LIST:VOLT ? Query ......................B-19 B.77 [SOUR :]LIST:VOLT:APPL Command....................B-22 B.78 [SOUR :]LIST:VOLT :APPL :SWE Command................B-22 B.79 [SOUR :]LIST:VOLT :APPL ? Query ................B-22 B.80 [SOUR :]LIST:VOLT...
Page 17 TABLE OF CONTENTS SECTION PAGE B.132 SYST :ERR :CODE:ALL? Query ..................... B-32 oard B.133 SYST :KEYB Command......................B-32 oard B.134 SYST :KEYB ? Query........................B-33 word able B.135 SYST :PASS :CEN Command .................... B-33 word able B.136 SYST :PASS :CDIS Command ...................
Page 18 LIST OF FIGURES FIGURE TITLE PAGE High Power BOP Series Power Supply......................x 1000W BOP Power Supply, Outline Drawing..................... 1-11 BOP Output Characteristics ........................1-16 BOP Series Rear Panel..........................2-1 Load Connections, Local Sensing......................2-12 Load Connections, Remote Sensing......................2-12 Parallel Configuration, Local Sensing, Typical ...................
Page 19 LIST OF TABLES TABLE TITLE PAGE BOP 1000 Watt Model Parameters ......................1-1 BOP General Specifications ........................1-2 Equipment Supplied ............................1-15 Safety Symbols ............................1-15 Accessories ..............................1-17 Rear Panel Connector Functions ........................2-2 IEEE 1118 Connector Input/Output Pin Assignments .................2-3 Trigger Port Pin Assignments ........................2-3 External Protection Connector Input/Output Pin Assignments ..............2-3 RS232C PORT Input/Output Pin Assignments ...................2-4 Parallel/Serial Control Out Port Pin Assignments ..................2-4...
Page 20 FIGURE 1-1. HIGH POWER BOP SERIES POWER SUPPLY BOP-1K 080709...
Page 21: Section 1 - Introduction
This manual contains instructions for the installation, operation and servicing of the BOP series of 1000 Watt rack-mounted, 4-quadrant bipolar, programmable, voltage and current stabilized d- c power supplies manufactured by Kepco, Inc., Flushing, New York, U.S.A. NOTE:This manual does not apply to units with Firmware Rev less than 2.0.
Page 22: Bop General Specifications
TABLE 1-2. BOP GENERAL SPECIFICATIONS SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION INPUT CHARACTERISTICS a-c voltage nominal 230 Va-c Single phase range 176 - 264 Va-c Frequency nominal 50-60 Hz range 47 - 63 Hz Current 176 Va-c 9.5A maximum 264 Va-c 6.4A maximum Source 0.99 minimum Power factor...
Page 23 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION OUTPUT CHARACTERISTICS (Continued) Sustain Output update rate 400 updates/sec voltage or current Readback measurement rate 5 ms measurement array 64 samples voltage and current µ step change timing sec (default) Allows rejection of line-related ripple/noise by changing response time for output step change (see PAR.
Page 24 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION PROGRAMMING/DISPLAY CHARACTERISTICS Analog I/O Port Main channel –10V to +10V Full range output, 20K Ohm input impedance (See Table 2-10) (voltage or current) (see PAR. 3.4) Protection Limit +1V to +10V 10% to 100% of Nominal Range.
Page 25 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION FUNCTION GENERATOR CHARACTERISTICS (Continued) Types of Basic waveforms Sine (Sinusoidal waveform) Triangle (Triangular waveform) Pos. Ramp (Ramp waveform) Neg. Ramp (Sawtooth waveform) Square (50% Duty Cycle Pulse) Level (DC waveform) Maximum number of points per basic wave- Local: 3933 form Count (Number of repetitions)
Page 26 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION FUNCTION GENERATOR CHARACTERISTICS (Continued) LIST command characteristics for "string" type Maximum number of points Note: Dwell time list must match (balance) the waveform (Remote only) amplitude list. • For single (global) dwell time: 5900 (high resolution) •...
Page 27 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION FUNCTION GENERATOR CHARACTERISTICS (Continued) Amplitude Range Main Channel Voltage (Volts p-p) 0 to 2 x E O Sine, Triangle, Square, ±Ramp Current (Amperes 0 to 2 x I O Sine, Triangle, Square, ±Ramp p-p) Protection Limit Channel .
Page 28: Miscellaneous Features
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION SAVE/RECALL CHARACTERISTICS (See PAR. 3.3.8) Number of Locations Parameters Saved or Recalled All parameters saved for power-up. Mode of operation Voltage, Current or External For External the operating mode is deter- mined by signal at I/O Port;...
Page 29 Types Factory defaults: Main: DEFAULT, Password Main, Admin1, Admin2 Admin1: A, Admin2: KEPCO Protection Choices Unprotected, Main, Admin1, Admin2 Password menu always protected by Admin2 Items Protected Interface, max/min , Load type, Test, Multiple unit configurations are protected by Calibration, Power-up, Keypad @ Admin2 password.
Page 30: Physical Characteristics
TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION RATING/DESCRIPTION PHYSICAL CHARACTERISTICS Dimensions English 5.25' X 19" X 21.5" H X W X D metric 133.3mm X 482.6mm X 546.1mm H X W X D Weight, 1000W models English 53 lbs metric 24.1Kg Connections...
Page 31: W Bop Power Supply, Outline Drawing
FIGURE 1-2. 1000W BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 1 OF 2) 1-11 BOP HIPWR 080709...
Page 32 FIGURE 1-2. BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 2 OF 2) 1-12 BOP HIPWR 080709...
Page 33: Local Control
LOCAL CONTROL Either the front panel keypad or the adjust control can set and adjust output voltage and current under local control. The display provides a digital display of output voltage and current as well as a pictorial display of real-time analog voltage and current meters. The keypad includes five function keys which provide access to the menu-driven functions of the unit.
Page 34: Waveforms
1.6.3 WAVEFORMS The BOP models have the capability to make the output follow complex waveforms. These may be generated either externally, using an analog reference voltage (see PAR. 1.6.6), or internally, using user-generated waveforms. Up to 16 user-generated waveforms can be stored for later use. The user selects the operating mode, positive and negative protection levels, and a count (the number of times the waveform is to be repeated).
Page 35: Energy Recuperation
Service must be referred to authorized personnel. Using the power supply in a manner not specified by Kepco. Inc. may impair the protection provided by the power supply. Observe all safety precautions noted throughout this manual (see listing on page E, preceding the Table of Contents).
Page 36: Bop Output Characteristics
FIGURE 1-3. BOP OUTPUT CHARACTERISTICS 1-16 BOP HIPWR 080709...
Page 37: Accessories
TABLE 1-5. ACCESSORIES ITEM FUNCTION PART NUMBER Mating Connector, Trigger Mates with Trigger port. 142-0527 (Kepco) SP2501 (CUI Stack) IEEE 1118 (BITBUS) Allows connection to IEEE 1118 (BITBUS) port. 142-0485 (Kepco) Mating connector KMDLA-5P (Kycon Inc.) IEEE 488 Cable, (1 meter long) Connects BOP power supply to GPIB bus.
Page 38 TABLE 1-5. ACCESSORIES (CONTINUED) ITEM FUNCTION PART NUMBER Slides Allows easy withdrawal of unit from rack (see Figure 1-2). (Model CS 04 includes slides, brackets, all mounting hardware CS 04 and installation instructions.) Heat Sink Provides adequate cooling for calibration sense resistors. 136-0451 1-18 BOP HIPWR 080709...
Page 39: Section 2 - Installation
SECTION 2 - INSTALLATION UNPACKING AND INSPECTION This instrument has been thoroughly inspected and tested prior to packing and is ready for operation. After careful unpacking, inspect for shipping damage before attempting to operate. Perform the preliminary operational check as outlined in PAR. 2.3. If any indication of damage is found, file an immediate claim with the responsible transport service.
Page 40: Rear Panel Connector Functions
TABLE 2-1. REAR PANEL CONNECTOR FUNCTIONS NUMBER CONNECTOR/TERMINAL FUNCTION (FIGURE 2-1) (REFERENCE DESIGNATOR) IEEE 1118 (BITBUS) Used for multiple identical BOP master/slave parallel, and series and series-parallel PORT configurations (refer to PAR. 2.8, see Table 2-2). (connector A1J4) TRIGGER May be used to initiate BOP output. (See Table 2-3.) (connector A1J3) IEEE 488 (GPIB) PORT Used for Remote control of the BOP via the IEEE 488 (GPIB) interface (See Table...
Page 41: Ieee 1118 Connector Input/Output Pin Assignments
TABLE 2-2. IEEE 1118 CONNECTOR INPUT/OUTPUT PIN ASSIGNMENTS CONNECTOR SIGNAL NAME FUNCTION IEEE 1118, referenced to pins 5, 8 1, 3 (shorted) CONTROL BUS “A” (2-Wire Differential Interface) IEEE 1118 (BITBUS) IEEE 1118, referenced to pins 1, 3 PORT 5, 8 (shorted) CONTROL BUS “B”...
Page 42: Rs232C Port Input/Output Pin Assignments
TABLE 2-5. RS232C PORT INPUT/OUTPUT PIN ASSIGNMENTS CONNECTOR SIGNAL NAME FUNCTION Request To Send (protocol not used) Receive Data RS 232 Transmit Data PORT LOGIC GND Logic Ground A1J5 LOGIC GND Logic Ground Clear To Send (protocol not used) TABLE 2-6. PARALLEL/SERIAL CONTROL OUT PORT PIN ASSIGNMENTS CONNECTOR SIGNAL NAME FUNCTION...
Page 43: Parallel/Serial Protect In Port Pin Assignments
TABLE 2-8. PARALLEL/SERIAL PROTECT IN PORT PIN ASSIGNMENTS CONNECTOR SIGNAL NAME FUNCTION SD_A Anode of LED optocoupler which is part of protection circuit for parallel or series combination. Cathode of LED is connected to PARALLEL/ SERIAL PROTECT OUT PORT (A2A5J2) pin 1 (see Table 2-9). When activated, the optocoupler shuts down the unit.
Page 44: Preliminary Operational Check
TABLE 2-10. ANALOG I/O PORT INPUT/OUTPUT PIN ASSIGNMENTS CONNECTOR SIGNAL NAME FUNCTION CAUTION: IT IS RECOMMENDED THAT SOURCE POWER OF EXTERNAL EQUIPMENT CON- NECTED TO THE ANALOG PORT BE APPLIED THROUGH AN ISOLATING TRANS- FORMER TO AVOID GROUND LOOPS OR POSSIBLE DAMAGE TO THE BOP DUE TO INCORRECT EQUIPMENT A-C WIRING (E.G., DEFEATING OF GROUND CONNECTION).
Page 45: Ieee 488 Port Input/Output Pin Assignments
1. With POWER switch set to off position, connect the power supply to source power (see PAR. 2.5.2). 2. With no load connected, set POWER switch to the ON position. Each time the unit is turned on an internal self-test is performed. The alphanumeric display (LCD) shows the processor firmware revision history and lists various tests performed during the internal self-test.
Page 46: Installation
INSTALLATION 2.4.1 RACK MOUNTING The unit is shipped with four feet attached to bottom of the unit which must be removed prior to installation (see Figure 1-2). The BOP is designed to be rack mounted in a standard 19-inch wide rack using the mounting ears (supplied) attached to the front panel (see Figure 1-2). Allow a minimum of 7/8 in.
Page 47: Grounding Network Configuration
It is hoped that the preceding paragraphs will be of some assistance in most cases. For help in special applications or difficult problems, consult directly with Kepco's Application Engineering Department. 2.5.3.1...
Page 48: Load Connection - General
The stabilized d-c power supply is definitely not an ideal voltage or current source, and practical interfaces definitely fall short of the ideal. All voltage-stabilized power supplies have a finite source impedance which increases with frequency, and all current-stabilized power supplies have a finite shunt impedance which decreases with frequency.
Page 49: Load Connection Using Local Sensing
2.5.6 LOAD CONNECTION USING LOCAL SENSING Figure 2-2 shows a typical configuration using local sensing and a grounded load; for local sensing with an isolated (“floating”) load, do not install the ground connection (see Figure. 2-2, Note 2). 2.5.7 LOAD CONNECTION USING REMOTE SENSING Figure 2-3 shows a typical configuration using remote sensing and a grounded load;...
Page 50: Load Connections, Local Sensing
FIGURE 2-2. LOAD CONNECTIONS, LOCAL SENSING FIGURE 2-3. LOAD CONNECTIONS, REMOTE SENSING 2-12 BOP HIPWR 080709...
Page 51: Setup For Remote Operation Via Gpib
NOTE: Multiple unit configurations require that all individual units be properly calibrated. (Units shipped from Kepco have been factory-calibrated.) If not, refer to Section 4 to calibrate the individual units prior to connecting them in parallel or series. Using calibrated units ensures that the multiple unit configuration is calibrated;...
Page 52: Multiple Unit Source Power
three series-connected units. These figures allow other configurations, e.g., five parallel-con- nected units or two series connected units, etc. to be easily deduced Figure 2-12 show the con- nections for a typical 3 X 2 (two parallel branches each consisting of three series-connected units) configuration, as well as simplified diagrams showing required arrangements for 2 X 2 and 3 X 2 configurations to allow the user.
Page 53: Parallel Configuration, Local Sensing, Typical
FIGURE 2-4. PARALLEL CONFIGURATION, LOCAL SENSING, TYPICAL 2-15 BOP HIPWR 080709...
Page 54: Parallel Configuration, Remote Sensing, Typical
FIGURE 2-5. PARALLEL CONFIGURATION, REMOTE SENSING, TYPICAL 2-16 BOP HIPWR 080709...
Page 55: Series Configuration, Local Sensing, Typical
FIGURE 2-6. SERIES CONFIGURATION, LOCAL SENSING, TYPICAL 2-17 BOP HIPWR 080709...
Page 56: Series Configuration, Remote Sensing, Typical
FIGURE 2-7. SERIES CONFIGURATION, REMOTE SENSING, TYPICAL 2-18 BOP HIPWR 080709...
Page 57: Configuring Parallel, Series, 2 X 2 Or 3 X 2 Combinations
FIGURE 2-8. TYPICAL MASTER/SLAVE PROTECTION INTERCONNECTIONS Upon startup, PAR/SER PROT IN PORT pin 8 of the master goes low, and stays low until all slaves are powered up. Normal power up of a unit causes the transistor connecting PAR/SER PROT IN PORT pin 2 and PAR/SER PROT OUT PORT pin 2 to conduct. The transistors of all units are connected in series, effectively shorting out all the shutdown diodes (the shutdown diodes of all units are also connected in series) connecting PAR/SER PROT IN PORT pin 1 and PAR/SER PROT OUT PORT pin 1.
Page 58: Multiple Units Menu Functions
TABLE 2-12. MULTIPLE UNITS MENU FUNCTIONS CHOICES SETTING FUNCTION (BOLD = Factory Default) CONFIGURATION STANDALONE STANDALONE - Unit operates independently, no additional units connected. PARALLEL PARALLEL - Unit to be configured for parallel operation; opens UNIT TYPE SERIES and CONNECTION TYPE options shown below. Used when units are con- MASTER 2 X 2 nected in parallel (increase output current) (see NOTE below).
Page 59: Master Power Up Screen
a. From the power-up screen press to enter the General Setup Menu. Highlight Series/ Parallel and press to view the Multiple Units menu (see Table 2-12). When prompted, enter ADMIN2 password (see PAR. 3.2.4.4) before continuing. b. From the Multiple Units menu, highlight Configuration (use ADJUST control or the keys) and press to modify.
Page 60: Power On Default Screen For Master Unit
TABLE 2-13. SLAVE STATUS MESSAGE DEFINITIONS Slave Status Message Displayed on Master Power Up Screen MEANING (see Figure 2-9) Ready Unit is ready for operation. If unit’s FAULT indicator is off, hardware error has NOT been detected, STANDBY output is ready to be turned on Powered OFF Unit is not responding to polls via BITBUS.
Page 61: Operating Instructions For Multiple Unit Combinations
FIGURE 2-11. POWER ON DEFAULT SCREEN FOR SLAVE UNIT 2.8.4 OPERATING INSTRUCTIONS FOR MULTIPLE UNIT COMBINATIONS 1. Apply power to the combination by first turning on the master, then turn on the slave(s). If the master is in STANDBY, depress STANDBY key on the master to apply power to the output terminals.
Page 62: Restoring A Unit To Standalone Operation
2.8.5 RESTORING A UNIT TO STANDALONE OPERATION 1. Turn off power to the master. 2. Turn off power to the slave(s). 3. Turn on power to the unit to be restored to standalone operation. 4. From the power-up screen press to enter the General Setup Menu.
Page 63 FIGURE 2-12. 3 X 2 (3 SERIES X 2 PARALLEL) CONFIGURA- -24/(-25 TION, LOCAL SENSING, TYPICAL 2-25/(2-26 Blank) 080709 C-25...
Page 65: Section 3 - Operation
BOP (see PAR. 3.6, Appendix A and Appendix B) or 2) CIIL commands (for compatibility with older Kepco products). Operation in remote mode can be simplified by the use of the VISA driver (see PAR. 3.5.5).
Page 66: Front Panel Keypad
TABLE 3-1. FRONT PANEL CONTROLS AND INDICATORS NUMBER CONTROL/INDICATOR FUNCTION (FIGURE 3-1) POWER ON/OFF Applies source power to unit circuit breaker A7CB1 Displays output voltage and current as well as information in response to Alphanumeric/graphic Display keypad and ADJUST control entries. Displays function of soft function (LCD) keys F1 through F5, and displays information as required to perform all local functions.
Page 67: Lcd And Power-Up Screen Description
TABLE 3-2. SPECIAL KEY FUNCTIONS FUNCTION The STANDBY key toggles the unit between output on (enabled, STANDBY indicator off) and output off (disabled, STANDBY indicator on). When on, the output goes to the programmed settings. Behavior of the STANDBY unit in Standby (Output off) is determined by the options chosen for Load Type (see PAR. 3.3.6). The default Load Type is ACTIVE, i.e., in STANDBY the unit is set to voltage mode, voltage is set to zero, cur- rent protection is set to the nominal, and voltage limit is set to maximum.
Page 68: Power-Up Screen Showing Graphic Meters
VOLTAGE 0000 FIGURE 3-3. POWER-UP SCREEN SHOWING GRAPHIC METERS VOLTAGE 0000 FIGURE 3-4. POWER-UP SCREEN SHOWING TIME LINE GRAPH When in Voltage mode, the power supply will (within the configured and rated limits) provide the programmed output voltage. Current is determined by the load, and cannot exceed the Current Protect limits.
Page 69: Turning The Power Supply On
When in Sink mode, the power supply is operating as an electronic load, absorbing and recu- perating the energy of an active load. Recuperated energy is passed back into the a-c source power line. Mode displayed at the upper right is VOLTAGE SINK when the unit is in voltage mode and an external constant current is injected into the BOP.
Page 70: How To Access The Menus
If the display is not viewable, press twice. The display will cycle through the range of con- trast settings. Press again to lock in the preferred contrast. To select between the meter (Figure 3-3) and time line (Figure 3-4) displays refer to PAR. 3.2.5.4.
Page 71: How To Modify A Parameter
• - Analog Remote Setup • • Analog Remote Settings (Table 3-15): Reference input (internal/external/external reference level), protec- tion limit (internal/external/lesser limit), external mode (enable/disable) • - General Setup (Figure 3-6) • • Interface Settings (Table 3-16): Data format (SCPI/CIIL), GPIB address (default = 6), *RST sets Output (on/off), Device clear (SCPI/MATE), Serial Baud (Off/9600/19200), Xon/Xoff (enable/disable), prompt (enable/disable) •...
Page 72: How To Access A Password Protected Menu
To change any password you must enter the Admin 2 password to access the Password Menu. The unit is shipped with the Admin 2 password set to “KEPCO,” the Main Unit password set to ”DEFAULT,” and the Admin 1 password set to “A.“ To change the password or to protect one of the protected menus, proceed as follows: 1.
Page 73: Operator Convenience Functions (Display Menu)
1. Enter the first character of the password using the keypad or ADJUST control (see PAR. 3.2.4.2 for entry of alphanumeric characters). (To change the password, refer to PAR. 3.2.4.3.) 2. Press to move to the next character and repeat step 1 for the next character of the pass- word.
Page 74: Displaying Programmed Settings In Remote Mode
To change the background, press from the power-up screen, Highlight Background, press , highlight Black or White, then to save. Press exit and save for power-up or apply the changes (without saving for power-up) and exit. TABLE 3-3. DISPLAY (OPERATOR CONVENIENCE) MENU FUNCTIONS CHOICES SETTING FUNCTION...
Page 75: Displaying Meters Or Graph (Time Line)
3.2.5.4 DISPLAYING METERS OR GRAPH (TIME LINE) The top screen can be configured to either display graphical analog meters (Figure 3-3) show- ing a coarse representation of voltage and current in addition to the digital readout, or a graphi- cal time line (Figure 3-4). The graphical time line is not an oscilloscope type display. Instead, it samples the output and refreshes the screen at a specified interval: 75, 30, 15, 7.5, 3.8, 1.5, 0.8, 0.3, 0.15, 0.08 or 0.04 seconds.
Page 76: Programming Voltage Or Current And Associated Protect Limits
3.3.3 PROGRAMMING VOLTAGE OR CURRENT AND ASSOCIATED PROTECT LIMITS From the power-up screen the settable voltage/current parameters are displayed at the bottom of the LCD above the HELP message (see Figure 3-3). Use to highlight the main or protect channel. (For BOP protect limits refer to PAR. 3.3.4.2 and for external limits see PAR. 3.3.4.3.) 1.
Page 77: Selecting Bipolar/Independent Protection Limits
3.3.3.1 SELECTING BIPOLAR/INDEPENDENT PROTECTION LIMITS The BOP can be configured to show the protection limits as either a single value that applies to both protection channels or show individual settings for positive and negative protection limits. Selecting Independent protection limits means that the positive and negative limits are dis- played (and can be modified) independently.
Page 78: General Setup Menu
TABLE 3-4. VOLTAGE AND CURRENT PARAMETER DEFINITIONS (CONTINUED) To modify refer to PAR. Term Definition Local Remote Minimum (box) Current mode only. Minimum (positive) setting for +Voltage Protect and +Voltage Protect Min maximum (maximum negative) setting for –Voltage Protect. Values of ±Volt- –Voltage Protect Max age Protect between +Voltage Protect Min and –Voltage Protect Max (near zero) are not allowed.
Page 79: Understanding Voltage And Current Protect Limits
FIGURE 3-7. MAX/MIN SETTINGS MENU Selection of Bipolar does not immediately change the protect limit values; it changes how the protect settings are displayed and set from the power-up screen. So if maximum/minimum pro- tection limits were set to different values, (e.g, for BOP 36-28MG, current mode, no load, +V Protect Max = 25V and –V Protect Min = 7V) when BIPOLAR is selected, the previous protec- tion values (+25, –7) will remain in place until a new value is entered in the Voltage Protection field.
Page 80: Changing Maximum Or Minimum Software-Controlled Limits
3.3.4 CHANGING MAXIMUM OR MINIMUM SOFTWARE-CONTROLLED LIMITS The maximum or minimum allowable voltage and current settings of the unit can be reduced from the nominal using the Max/Min Settings menu. which lists the system’s software-controlled voltage and current limits (+Voltage Max, –Voltage Min, +Current Max, –Current Min) as well as the corresponding protection limits organized by operating mode.
Page 81: Changing Maximum Accepted Voltage Or Current (Main Channel Software Limits)
TABLE 3-5. MAX/MIN SETTINGS MENU (CONTINUED) CHOICES SETTING FUNCTION (BOLD = Factory Default) +V Protect Max (value) Defines the maximum value that +Voltage Protect can be set to. To modify refer Eomax +1% of Eomax to 3.3.4.1. +V Protect Min (internal value) Defines the minimum value that +Voltage Protect can be set to.
Page 82: Changing Maximum/Minimum Protection Software-Controlled Limits
3. Highlight the voltage or current max/min value and press to change it. Software limits are absolute values (do not use minus sign for negative limits). Use number keys to change the setting, then to save. 4. When complete, press to save for power-up, to abort, or to apply the changes...
Page 83: Enabling/Disabling Dc Output Power
3.3.5 ENABLING/DISABLING DC OUTPUT POWER The BOP output can be disabled (OFF) or enabled (ON) by toggling the STANDBY key in local mode or sending the SCPI OUTPut ON or OUTPut OFF command (see PAR. B.13) via the selected digital remote control bus (see PAR. 3.5). The behavior of the unit when disabled depends on the Load Type setting (see PAR.
Page 84: Power Supply Behavior When Output Is Set To Off
WARNING Accessing the BOP after the output is disabled in BATTERY mode is hazardous because (1) high current arcing is possible and (2) either the external battery voltage, or the voltage (±Voltage Protection max) on the BOP output terminals may be dangerous. Therefore, for battery and constant-voltage-type active electronic loads it is recommended that two properly rated external switches be installed for safety: one in series with the battery, and one across the BOP output.
Page 85: Changing The Default Power Up Settings
3.3.7 CHANGING THE DEFAULT POWER UP SETTINGS When the BOP is shipped, the following default settings are programmed to be in effect each time the unit is turned on, however these defaults may be changed as indicated below; • Mode: Voltage (may be voltage or current, see PARs. 3.3.2 and 3.4.2. Table 3-7 illus- trates the relationship between Mode, Main Channel, Protection Type and Levels set- tings.
Page 86: Storing/Recalling Power Supply Output Settings
TABLE 3-7. EXAMPLES SHOWING HOW POWER-UP SETTINGS FUNCTION (CONTINUED) Power-up condition (output ON) Main Protection Mode (All referenced pins located on Analog I/O Port Levels Channel Type see PAR. 3.4 and Figure 2-1) Unit powers up in voltage mode, 0V, ±current protection determined by pins 5 External Voltage: 10 and 13 (see PAR.
Page 87: Viewing Saved Settings
If Protection type was saved as External, EXT is listed under the Prot heading. In this case the protection settings are determined by the levels applied to the appropriate pins of the Analog I/O Input Port (see Table 2-10). If the main channel is voltage, the protection settings are deter- mined by pin 5 (negative current protection) and pin 13 (positive current protection).
Page 88: Save/Recall Menu
TABLE 3-8. SAVE/RECALL MENU CHOICES PARAMETER FUNCTION (BOLD = Factory Default) NOTE: DEFAULT values for empty cells are the settings of the unit at the time the save/recall menu is entered. MODE VOLT VOLT - Selects voltage mode. Voltage value determined by SETTING. CURRENT CURRENT - Selects current mode.
Page 89: Copying Previously Saved Settings To A New Location
3.3.8.4 COPYING PREVIOUSLY SAVED SETTINGS TO A NEW LOCATION 1. Press from the power-up screen to enter the Saved Setups screen (Figure 3-8). 2. Use the keys to highlight the location to be copied, then press 3. Highlight an Empty location and press to save to the highlighted location, or press abort the copy.
Page 90: Understanding How Waveforms Are Generated
FIGURE 3-9. SAVED WAVEFORMS MENU 3.3.9.3 UNDERSTANDING HOW WAVEFORMS ARE GENERATED Waveform are generated by the BOP by producing a series of discrete output levels (points) in a prescribed pattern. In the case of sine, triangle and ramps, this produces an output that con- forms to an approximation of the selected waveform type.
Page 91: Viewing Stored Waveforms
TABLE 3-9. SINE, TRIANGLE AND RAMP WAVEFORM FREQUENCY VS. POINTS Frequency Frequency (See Notes 1, 2, and 3) (See Notes 1, 2, and 3) Total Points Total Points From From 0.01Hz 2.7Hz 3840 55.5Hz 66.5Hz 2.71Hz 3.6Hz 2880 66.6Hz 88.7Hz 3.71Hz 5.5Hz 1920...
Page 92: Executing A Waveform
whether the segment is initial (run only the first time) or repeating is indicated by I or R, respec- tively. To see the offset, start/stop angle, initial/repeat for a segment, use or the encoder to highlight the segment, then press (Initial/Repeat is not available for the last seg- ment, since the last segment must repeat).
Page 93: Waveform Segment Details Menu
mode can not be edited; to change from a voltage waveform to a current waveform, refer to PAR. 3.3.9.8 to start a new waveform.) or ADJUST to highlight the segment, then press to edit, When editing a segment, a submenu showing the parameters for that segment will open (see Table 3-11).
Page 94: Creating A New Waveform
To delete a segment, highlight the segment at the Waveform Settings screen (Figure 3-10), the press , to permanently erase the segment. This change is saved immediately and can not be undone. To add a segment, at the Waveform Settings screen (Figure 3-10) highlight the segment follow- ing the one to be added (e.g., if there are three existing segments (1, 2, 3), to add a segment between 2 and 3, highlight 3.
Page 95: Using Segments To Build A Waveform
6. When adding a new segment, the parameters of the highlighted segment are copied. It is not possible to move or copy a segment to another location. Refer to Table 3-11, Note 2 for details about initial vs. repeating segments. Refer to PAR. 3.3.9.9 for a detailed example of how to add segments to build a complex waveform.
Page 96 3. From the Waveform Settings screen, highlight segment NEG RAMP 50.0HZ 4.00 R and press to insert a new segment. Use to modify the following settings of the new seg- ment. For each parameter, use to save the setting. Type Level Period (sec) 0.002...
Page 97: Copying A Waveform
When all settings are complete, press to save for power-up. This step create a repeating 1/4 sine wave that starts at 6V and rises to 10V over 5 ms (1/4 of 20ms period established by 50Hz frequency). The waveform shown in Figure 3-11 has now been saved. Note that by careful calculation of period and start/stop angle, accurate waveform simulations can be attained.
Page 98: Analog Remote Mode Programming
TABLE 3-13. ERROR MESSAGE EXPLANATIONS (CONTINUED) ERROR MESSAGE EXPLANATION Save Disabled, Request ignored Save Display Change is disabled. From power-up screen, press , highlight password settings to enable. EXTERNAL MODE enabled. MODE key does not function while Mode is being controlled externally. Press , high- light External Mode and change to Disable.
Page 99: Remote Output Off
BOP as a power amplifier (PAR. 3.4.3) and 3) establish the protection limits (PAR. 3.4.4). An output signal proportional to output current is also provided for external use (PAR. 3.4.5). 3.4.1 REMOTE OUTPUT OFF There are two ways two turn off the output using remote signals: (1) Remote Shutdown which requires the unit to be turned off, then on in order to restore operation and (2) Remote Standby which sets the output to OFF, putting the unit in STANDBY status.
Page 100: Remote Standby
FIGURE 3-14. REMOTE SHUTDOWN USING INTERNAL POWER, MULTIPLE UNITS, 3.4.1.2 REMOTE STANDBY A standalone unit or a multiple unit configuration (parallel, series or series-parallel) can be set to STANDBY status by applying a remote signal to the TRIGGER PORT as shown in Figure 3-15. For multiple unit configurations this signal must be applied to the master.
Page 101: Controlling The Output Using The Bop As A Power Amplifier
3.4.3 CONTROLLING THE OUTPUT USING THE BOP AS A POWER AMPLIFIER The BOP can function as a power amplifier by means of the External Reference input at the Analog I/O port. This analog signal controls the main channel of the BOP. To use the BOP as a power amplifier see the following instructions for using the external reference: PAR.
Page 102: Analog Remote Setup Menu
2. To return to digital or local control, from the power-up screen press , then highlight Refer- ence Input and press . Highlight Internal and press to save. Then press to apply the change and exit. TABLE 3-15. ANALOG REMOTE SETUP MENU CHOICES SETTING FUNCTION...
Page 103: Variable Gain Using External Reference Level
For linear response (input vs. output) the software limit (see 3.3.4.1) should be set to nominal and the maximum peak value (d-c plus a-c) of the reference signal must not exceed ±10V. If the input signal exceeds the limit value (either ±10V if the software limit is set to nominal, or a lesser voltage for a user-determined software limit) clipping of the output voltage or current to the limit will occur.
Page 104: External Protection Limits
3.4.4 EXTERNAL PROTECTION LIMITS When PROTECTION LIMIT on the Reference Menu is set to EXTERNAL, the protect limits are determined by four analog signals referenced to Ground (pin 12) which are applied to the Ana- log I/O Port (see PAR. 3.4.4). To be functional this feature must first be configured from the front panel.
Page 105: Monitoring Output Current Using An Analog Signal
3.5.2.1 PROGRAMMING VOLTAGE/CURRENT LIMIT AND CURRENT/VOLTAGE LIMIT Kepco's auto-crossover digital supplies can operate in either voltage mode with current limit, or current mode with voltage limit. The operating mode is determined by the voltage and current commands received, as well as the load. Each time voltage and current commands are received, the unit must evaluate the commands and the load conditions to determine the neces- sary operating mode.
Page 106: Making Sure The Previous Command Is Complete
1. Minimize programmed mode (voltage or current) changes. Unless absolutely required by the test parameters, allow the power supply to automatically switch modes as determined by the load. This will improve response time and reduce undesirable transients. 2. Once the mode (voltage or current) is programmed, program the active parameter to zero and the complementary limit parameter to the maximum anticipated for application.
Page 107: Remote Mode Setup
The BOP can be conveniently substituted for a standard BOP that is currently being used with one of Kepco’s BIT cards by using one of the Compatibility Modes provided (see PAR. 3.5.3.4 and 3.5.3.5.
Page 108: Gpib Port Setup
SCPI (Standard Commands for Programmable Instruments) - see PAR. Data Format CIIL 3.6. and Appendix B. CIIL - Provides compatibility with early Kepco power supplies and con- trollers. GPIB Address 0 - 30 (06) Assigns address used by external GPIB controller to communicate with BOP.
Page 109: Determining Whether *Rst Command Sets The Output Off Or On
3.5.3.1.3 DETERMINING WHETHER *RST COMMAND SETS THE OUTPUT OFF OR ON The user can control whether the *RST command (see PAR. A.11) sets the output on or off. Table 3-17 describes how the unit operates depending on how *RST set Output is config- ured, and the load type selected.
Page 110: Establish Communication Language
then press to apply the changes (without saving for power-up) and exit, or press to save for power-up (see PAR. 3.5.6.2.3 for a description of prompt mode). Enable - Enables Serial Prompt (see PAR. 3.5.6.2.3 for a description of prompt mode). Disable - Disables Prompt.
Page 111: Ieee 488 (Gpib) Bus Command Mode Messages
TABLE 3-18. IEEE 488 (GPIB) BUS INTERFACE FUNCTIONS (CONTINUED) SUBSET FUNCTION COMMENTS SYMBOL Complete Capability. BOP accepts DCL (Device Clear) and SDC (Selected Device Device Clear Clear). Device Trigger Respond to *TRG and <GET> trigger functions. Controller No Capability TABLE 3-19. IEEE 488 (GPIB) BUS COMMAND MODE MESSAGES MESSAGE MNEMONIC COMMENTS...
Page 112: Bop Visa Instrument Driver
3.5.5 BOP VISA INSTRUMENT DRIVER The VISA instrument driver for the BOP power supply, available for download at www.kepco- power.com/drivers.htm, simplifies programming with a VISA compatible GPIB controller. Included are: • source code (C) for all VISA functions (kp_bophi.c) •...
Page 113: Rs 232 Implementation
3.5.6.2 RS 232 IMPLEMENTATION The following paragraphs are provided to help the user understand how the RS 232 serial inter- face is implemented in the BOP. Since the RS 232 protocol does not use a parity bit, The XON/XOFF method of communication is selected as the default to ensure “handshake” control of serial communication.
Page 114: Xon Xoff Method
by the command originator. When the line is parsed and the commands are sent to the analog processor, the BOP sends the line terminator sequence CR LF to the command originator. The ESC character is used for synchronization, causing the BOP to reset its input buffer and return a CR LF sequence.
Page 115: Prompt Method
If each of the above steps is completed successfully, the problem lies in the computer hard- ware and/or software. Refer to the Product Support area of the Kepco website for additional information regarding RS 232 communications problems: www.kepcopower.com/support.
Page 116: Scpi Messages
mation (GPIB address) must be included before the command sequence. (See PAR.3.5.3.1.1 to establish the BOP Power Supply GPIB address.) 3.6.1 SCPI MESSAGES There are two kinds of SCPI messages: program messages from controller to power supply, and response messages from the power supply to the controller. Program messages consist of one or more properly formatted commands/queries and instruct the power supply to perform an action;...
Page 117 The LIST subsystem includes a subsystem for waveform generation. The waveform generation is invoked with the verb APPLY. When APPLY is added to a list:volt or list:curr command, the BOP adds a series of points to the list arrays. The BOP can apply these points to approximate a SINE, Triangle, RAMP (positive or negative) or square waveform or a level.
Page 118: Measure Subsystem
• Variable area - around 3000 updates can be completed prior to an automatic PACK occurring. Variable areas also include serial number updates and password updates. • Calibration - 64 calibrations can be saved before a PACK is required. ROOT : (colon) SYSTem subsystem ABORt subsystem...
Page 119: Status Subsystem
ROOT : (colon) [SOURce:] subsystem LIST subsystem [SOURce:] [SOURce:] LIST CURRent VOLTage :CLEar [:LEVel] [:LEVel] :COUNt val [:IMMediate] [:IMMediate] :COUNt? [:AMPLitude] val [:AMPLitude] val :COUNt:SKIP int [:AMPLitude]? MIN, MAX [:AMPLitude]? MIN, MAX :COUNt:SKIP? :TRIGgered :TRIGgered :CURRent val,val [:AMPLitude] val [:AMPLitude] val APPLy type,val1,val2,val3 [:AMPLitude]? [:AMPLitude]?
Page 120: Calibrate Subsystem
If the password is lost, it is possible to enable the password interface by sending SYST:PASS:CEN POWERSUPPLIER Once enabled, the passwords can be set to the default values SYST:SEC:OVERRIDE This restores the passwords to the following: Main: DEFAULT Admin2: KEPCO Admin1: (none assigned) 3-56 BOP HIPWR 080709...
Page 121: Program Message Structure
3.6.4 PROGRAM MESSAGE STRUCTURE SCPI program messages (commands from controller to power supply) consist of one or more message units ending in a message terminator. The message terminator is not part of the syntax; it is defined by the way your programming language indicates the end of a line (“newline” charac- ter).
Page 122: Query Indicator
3.6.4.3 QUERY INDICATOR The question mark (?) following a keyword is a query indicator. This changes the command into a query. If there is more than one keyword in the command, the query indicator follows the last keyword. (e.g., VOLT? and MEAS:CURR?). 3.6.4.4 DATA Some commands require data to accompany the keyword either in the form of a numeric value...
Page 123: Message Terminator
• new line (<NL>), ASCII 10 (decimal) or 0A (hex) NOTE: Kepco power supplies require a message terminator at the end of each program mes- sage. The examples shown in this manual assume a message terminator will be added at the end of each message. Where a message terminator is shown it is represented as <NL>...
Page 124: Program Message Syntax Summary
3.6.6 PROGRAM MESSAGE SYNTAX SUMMARY • Common commands begin with an asterisk (*). • Queries end with a question mark (?). • Program messages consist of a root keyword and, in some cases, one or more message units separated by a colon (:) followed by a message terminator. Several message units of a program message may be separated by a semicolon (;) without repeating the root keyword.
Page 125: Status Reporting Structure
FIGURE 3-20. STATUS REPORTING STRUCTURE A zero to one transition of a condition register is added to the event register. Reading an event register clears all of the bits found in the event register. If any bits are set in an event register, the following condition register bit is then set.
Page 126: Operational Status Register
Figure 3-20 also shows that if the error/event queue is not empty, bit 3 is set in the Service Request register and bit 4 indicates that a message is available in the output buffer. 3.6.7.2 OPERATIONAL STATUS REGISTER The OPERational condition register contains conditions which are a part of the instrument’s nor- mal operation.
Page 127: Scpi Program Examples
(Voltage mode) or output current (Current mode) to 1A, then reads the measured (actual) voltage and current, then prints the measurements. /**************************************************************************/ /* Sample Program For KEPCO power supply, using National Instruments */ /* GPIB interface card and IBM PC or compatible computer /**************************************************************************/ #include <stdio.h>...
Page 129: Section 4 - Calibration
SECTION 4 - CALIBRATION GENERAL This section contains the calibration instructions for the Power Supply. It is recommended that the user be familiar with Local Mode operation (PAR.3.2) before calibrating the unit. A full calibration consist of a voltage calibration and a current calibration. Both voltage and cur- rent calibrations consist of zero, max and min, and protection limit calibration.
Page 130 TABLE 4-1. CALIBRATION SUMMARY (CONTINUED) Reference Type Monitored Type Step Output Conditions Notes and Value Parameter Remote Calibr. 1. ZERO External: No requirements 1. Automatic internal VOLTAGE 2. POSITIVE 1. 0.0V measurement EXTERNAL 2. +10.0V 2. Remote Calibration PROTECTION, (Analog I/O Port only.
Page 131: Test Equipment Requirements
(together) TEST EQUIPMENT REQUIREMENTS Table 4-2 lists sense resistors recommended for measuring current and includes Kepco and Manufacturer’s part numbers. The value of the sense resistor chosen should be known with 0.001% accuracy. If other than a recommended sense resistor is to be used, it must be rated for at least 100W power dissipation (actual power dissipation will be approximately 10W).
Page 132: Calibration Using Remote Scpi Commands Via Gpib Or Rs 232 Interface
TABLE 4-3. VOLTAGE CALIBRATION MEASUREMENTS AND TOLERANCES VOLTAGE ±FULL SCALE ±FULL SCALE MODEL ZERO VOLTAGE VPR LIMIT 10V (MAX) 10V (MAX) BOP 10-75MG -10V (MIN) -10V (MIN) ±0.0001V ±0.001V ±0.003V 20V (MAX) 20V (MAX) BOP 20-50MG -20V (MIN) -20V (MIN) ±0.0002V ±0.002V ±0.006V...
Page 133: Calibration Procedure Using Scpi Commands
TABLE 4-4. CURRENT CALIBRATION MEASUREMENTS AND TOLERANCES SENSE RESISTOR CURRENT ±FULL SCALE ±FULL SCALE MODEL VALUE ZERO CURRENT CPR LIMIT (SEE NOTE AND TABLE 4-2) 0.075V (MAX) 0.075V (MAX) BOP 10-75MG 0.001 Ohm –0.075V (MIN) –0.075V (MIN) ±0.008mV ±0.008mV ±0.038mV 0.05V (MAX) 0.05V (MAX) BOP 20-50MG...
Page 134: Calibration Setup
2. For FULL SCALE calibration adjust the output to obtain the closest value above the nominal full scale value. 3. Set the unit for local sensing with GND Network in (see Figure 4-1) and discon- nect load from BOP output to prepare the unit for voltage calibration. FIGURE 4-1.
Page 135 7. Connect a 0V ±0.1mV d-c reference to pin 11 (EXT_REF) referenced to pin 4 (SGND) of the Analog I/O Port connector (A2A5J6). Set the BOP to zero volts output by sending CAL:VEXT ZERO. Connect the DVM to the BOP output and send CAL:DATA commands as needed (see PAR.
Page 136: Current Shunt (Sense Resistor) Connections
BOP current outputs, as well as the formula for calculating expected measured values and tolerances for any sense resistor other than those recom- mended. Table 4-2 lists Kepco and Manufacturer part numbers for those sense resistors rec- ommended.
Page 137 possible above the nominal full scale value within tolerance specified in Table 4-4 for +FULL SCALE CURRENT. 19.Set the BOP to maximum negative output current by sending CAL:CURR MIN. Continue to measure the output current of the supply using the DVM connected to the sense resistor. To adjust, send CAL:DATA commands as needed (see PAR.
Page 138: Calibration Using Front Panel Keypad In Local Mode
27.Connect +10.0V ±0.1mV d-c reference voltage from the external voltage source to ILIM+_EXTERNAL and ILIM-_EXTERNAL, pins 5 and 13, referenced to pin 12 (GND1) of the BOP analog I/O connector (A2A5J6). Then send CAL:CLIM MAX, then CAL:ZERO com- mands. This enables the BOP to recognize that the voltage at the ILIM+_EXTERNAL pin is 10.0V.
Page 139: Main Calibration Screen
2. Enter the password (see PAR. 3.2.4.4), and press , The LCD shows main calibration screen (Figure 4-3) which includes explanations for the following function keys: • - VOLTAGE - Selects the voltage calibration of the BOP. • - CURRENT - Starts the calibration for the BOP in current mode. •...
Page 140: Calibration Procedure Using Local Mode
CAUTION: IF THE CALIBRATE ZERO FUNCTION IS AVAILABLE, PERFORM THIS FUNCTION FIRST, AS IT AFFECTS ALL OTHER OUTPUT CALIBRATIONS. • - Calibrate the Zero adjustment for this operational mode. IF THIS FUNCTION IS AVAILABLE, PERFORM THIS FUNCTION FIRST, AS IT AFFECTS ALL OTHER OUT- PUT calibrations.
Page 141 2. Press - VOLTAGE, - INTERNAL, - ZERO to set the BOP to zero volts output. Connect a Digital Voltmeter (DVM) to the BOP OUT S and COM S terminals to measure the output voltage. Adjust the BOP output as needed until the DVM reads as close to zero as possible within tolerance specified in Table 4-3 for VOLTAGE ZERO.
Page 142 P terminal). Table 4-4 provides recommended sense resistor values for various BOP current outputs, as well as the formula for calculating expected measured values and tolerances for any sense resistor other than those recommended. Table 4-2 lists Kepco and Manufacturer part numbers for those sense resistors recommended.
Page 143 22.Connect a +0V ±0.1mV d-c reference voltage to external reference, A2A5J6 pin 11, refer- enced to pin 12 (GND1) of the BOP analog I/O port. 23.Press - EXTERNAL, - ZERO to set the BOP to zero volts across the sense resistor (corresponding to zero current).
Page 144: Calibration Using Visa Driver Soft Panel
4.4.3 CALIBRATION USING VISA DRIVER SOFT PANEL Refer to help text included with VISA Driver. Calibration of series-connected or parallel-con- nected configurations is not supported by the demonstration program supplied with the VISA Driver soft panel, stand-alone calibrations may be performed using the VISA driver soft panel. CALIBRATION STORAGE The BIOPO maintains the calibration tables in Flash Memory until a PACK is executed.
Page 145: Appendix A - Scpi Common Command/Query Definitions
APPENDIX A - SCPI COMMON COMMAND/QUERY DEFINITIONS INTRODUCTION This appendix defines the SCPI common commands and queries used with the BOP power supply. Common commands and queries are preceded by an asterisk (*) and are defined and explained in paragraphs A.2 through A.18, arranged in alphabetical order. Table A-1 provides a quick reference of all SCPI common commands and queries used in the Interface Card.
Page 146: Ese? - Standard Event Status Enable Query
<Manufacturer>, <Model>, <Voltage>, <Current>, <Serial Number>, <Main revision>-<Flash revision> where: <Manufacturer> = KEPCO, <Model> = BOP 1000W, <Serial Number> = SSSSSS <date> = (string of up to 12 contiguous characters denoting calibration date) <Main revision=n.m, (e.g, 1.0) > (See example, Figure A-1.) *OPC *OPC —...
Page 147: Opc? - Operation Complete Query
Returns 33 (bit 5 set), indicating Command Error has occurred since the last time the register was read. Bit 1 indicates operation complete (OPC). *IDN? Power supply returns: KEPCO, BOP_1000W 36-28 123456 1.43. *OPC Allows status bit 0 to be set when pending operations complete.
Page 148: Opt? - Options Query
*OPT? *OPT? — OPTIONS QUERY Syntax: *OPT? Returns string determined by power supply model. Description: Causes the power supply to return an ASCII string which defines the functionality of the power supply. The functionality is defined as follows: STRING DATA MEANING CCAL Support for limit calibrations is present.
Page 149: Sre - Service Request Enable Command
*SRE A.13 *SRE — SERVICE REQUEST ENABLE COMMAND Syntax: *SRE<integer> where <integer> = value from 0 - 255 per Table A-3, except bit 6 cannot be pro- grammed. Description: Sets the condition of the Service Request Enable register. The Service Request Enable register determines which events of the Status Byte Register are summed into the MSS (Master Status Sum- mary) and RQS (Request for Service) bits.
Page 150: Tst? - Self Test Query
*TST? A.17 *TST? — SELF TEST QUERY Syntax: *TST? Returned value: 7 bits coded per Table A-4. Description: Power Supply test.This query causes the power supply to do a self test and provide the controller with pass/fail results. A 0 is returned if the unit passes the test. If the unit fails, a number from 1 through 128 is returned to indicate the cause of the error.
Page 151: Appendix B - Scpi Command/Query Definitions
APPENDIX B - SCPI COMMAND/QUERY DEFINITIONS INTRODUCTION This appendix defines the SCPI subsystem commands and queries used with the BOP power sup- ply. Subsystem commands are defined in PAR. B.3 through B.146, arranged in groups as they appear in the tree diagram, Figure 3-18. Table B-1 provides a quick reference of all SCPI subsys- tem commands and queries used in the BOP.
Page 152: Cal Commands And Queries
To use these commands, refer to Kepco’s website (www.kepcopower.com/drivers) and download the LabWindows/ CVI Version 5 driver for BOP or refer to PAR. 4.3.1. This file provides remote calibration capability and...
Page 153: Initiate[:Immediate] Command
CAL:CEXT command CAL:STAT command and query CAL:CGA command CAL:VEXT command CAL:CLIM command CAL:VGA command CAL:CPR command CAL:VLIM command CAL:CURR[:DATA] command CAL:VOLT[:DATA] command CAL:DATA value command CAL:VPR command CAL:DPOT command CAL:ZERO command CAL:SAVE command INIT[:IMM] INITiate[:IMMediate] COMMAND Syntax: Short Form: INIT:[IMM] Long Form: INITiate[:IMMediate] Description: Enables a single trigger.
Page 154: Init:cont
INIT:CONT INITiate:CONTinuous COMMAND Syntax: Short Form: INIT:CONT {ON | OFF} or {1 | 0} (1 = on, 0 = off) Long Form: INITiate:CONTinuous {ON | OFF} or {1 | 0} (1 = on, 0 = off) Description: INIT:CONT ON enables continuous triggers.; INIT:CONT OFF disables continuous triggers. If INIT:CONT is OFF, then INIT[:IMM] arms the trigger system for a single trigger.
Page 155: Mem :Upd
MEM:UPD B.12 MEMory:UPDate COMMAND Syntax: Short Form: MEM:UPD {INT | LIM | SER | CONT | OUTP} Long Form: MEMory:UPDate {INTerface | SERial | LIMits | CONTrast | OUTPut} Description: Saves selected variables. MEM:UPD INT saves GPIB address, Language (SCPI or CIIL) and all SYST:SET (PAR.
Page 156: Output[:State] Command
NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2. This example creates a 3-Ampere, 100-millisecond current pulse and performs a current measure- ment during the first five milliseconds of the pulse. list:cle Clear list. list:set:sample .0003125 Establishes the sample timing.
Page 157: Output[:State] Query
OUTP? B.14 OUTPut[:STATe] QUERY Syntax: Short Form: OUTP[:STAT]? Long Form: OUTPut[:STATe]? Return Value: <int_value> (0 or 1) Description: Indicates whether power supply output is enabled or disabled. Returns 0 if output disabled, returns 1 if output enabled. Related Commands: OUTP. OUTP:MODE B.15 OUTPut:MODE COMMAND Syntax:...
Page 158: B-4 Setting Limits
NOTES: 1. This example assumes a BOP 36-28MG power supply is operating in constant current (CC) mode. 2 Examples below are intended only to illustrate command functions. Refer to PAR. 3.5.2 for pro- gramming techniques to optimize performance. CURR:LIM? Returns 28,28 (positive and negative defaults for max current in current mode).
Page 159: Ent [:Lev El ]:Lim It :Pos Command
CURR:LIM:POS B.23 [SOURce:]CURRent[:LEVel]:LIMit:POS COMMAND Syntax: Short Form: [SOUR:]CURR[:LEV]:LIM:POS <value> Long Form: [SOURce:]CURRent[:LEVel]:LIMit:POSitive <value> where <value> is between zero and the rated (nominal) output voltage Description: Establishes the positive software limit <value> for output current, i.e., sets the maximum value of out- put current that the unit will be allowed to source (quadrant 1, Figure 1-3) or sink (quadrant 4) to the value specified by the user.
Page 160: Ent [:Lev El ]:Prot Ect [:Both] Query
CURR:PROT[:BOTH]? B.28 [SOURce:]CURRent[:LEVel]:PROTect[:BOTH] QUERY Syntax: Short Form: [SOUR:]CURR[:LEV]:PROT[:BOTH]? Long Form: [SOURce:]CURRent[:LEVel]:PROTect[:BOTH]? Returns <value>, <value> Description: Identifies the protection limits for current (source, sink), the maximum current the unit will source.or sink CURR:PROT:MODE B.29 [SOURce:]CURRent[:LEVel]:PROTect:MODE COMMAND Syntax: Short Form: [SOUR:]CURR[:LEV]:PROT:MODE (EXT | FIX | LESS |) Long Form: [SOURce:]CURRent[:LEVel]:PROTect:MODE (EXTernal | FIXed | LESSer |) Description: Determines how current protection limits are controlled.
Page 161: It [:Both] Command
B.35 [SOURce:]CURRent[:LEVel]:PROTect:LIMit[:BOTH] COMMAND CURR:PROT:LIM[:BOTH] Syntax: Short Form: [SOUR:]CURR[:LEV]:PROT:LIM[:BOTH] <value> Long Form: [SOURce:]CURRent[:LEVel]:PROTect:LIMit:[BOTH <value> where <value> is between minimum (box) value (Figure 1-3) and 1% above rated (nominal) output current. Description: Establishes the maximum value possible for both the positive and negative protection limits for cur- rent.
Page 162: Ent [:Lev El ]:Trig Gered [:Amp Litude ] Command
CURR:TRIG B.41 [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude] COMMAND Syntax: Short Form: [SOUR:]CURR[:LEV]:TRIG[:AMP] <exp_value> Long Form: [SOURce:]CURRent[:LEVel]:TRIGgered[:AMPlitude] <exp_value> <exp_value> = digits with decimal point and Exponent, e.g., 2.71E1 for 27.1 Description: Programs current value to be transferred to output by *TRG (trigger) commands. This command can be used to reset many power supplies to preselected parameters by issuing a single *TRG com- mand.
Page 163: [Sour Ce :]List:coun T ? Query
NOTES: Examples below are intended only to illustrate command functions. Refer to PAR. 3.5.2 for pro- gramming techniques to optimize performance. LIST:CLEAR Initializes the list process. LIST:RES? Returns 0.000093,0.034000,nnnn (where nnnn = total number of points available). LIST:VOLT:POINTS? Returns 0. LIST:VOLT:POINTS? MAX Returns 5900.
Page 164: List:coun T :Skip Command
.VOLT:MODE LIST Executes the list. For 240 milliseconds the BOP outputs a staircase triangle wave from -20V to +20V and back down to -20V. This staircase will have a uniform spacing between voltage changes of 10 milliseconds and will repeat 100 times. VOLT? Returns +20 (the last step in the list set the unit to +20V.
Page 165: [Sour Ce :]List:curr Ent Command
LIST:CURR B.52 [SOURce:]LIST:CURRent COMMAND Syntax: Short Form: LIST:CURR <exp_value>, <exp_value>, . . . (to max of 5900 data points for global dwell time) Long Form: LIST:CURRent <exp_value>, <exp_value>, . . . (to max of 5900 data points for global dwell time) <exp_value>...
Page 166: Ent :Appl Y :Swe Ep ? Query
LIST:CURR:APPL:SWE? B.56 [SOURce:]LIST:CURRent:APPLy:SWEep? QUERY Syntax: Short Form: LIST:CURR:APPL:SWE? Long Form: LIST:CURRent:APPLy:SWEep? Return Value: <value1>, <value2>(0.01 to 360) Description: Returns start <value1> and stop <value2> angle in degrees for either triangle and sine wave- forms. LIST:CURR:POIN? B.57 [SOURce:]LIST:CURRent:POINts? QUERY Syntax: Short Form: LIST:CURR:POIN? Long Form: LIST:CURRent:POINts? Return Value: <n>...
Page 167: [Sour Ce :]List:quer
LIST:QUER? B.62 [SOURce:]LIST:QUERy? QUERY Syntax: Short Form: LIST:QUER? Long Form: LIST:QUERy? Return Value: <int_value> Description: Identifies first location to be queried by LIST:VOLT?, LIST:CURR?, LIST:DWEL? queries. Related Commands: LIST:QUER, LIST:CURR?, LIST:DWEL?. LIST:QUER?. (See example, Figure B-5.) LIST:REP B.63 [SOURce:]LIST:REPeat COMMAND Syntax: Short Form: LIST:REP <int_value1>,<int_value2>,<array>...
Page 168: [Sour Ce :]List:samp Le: Volt Age Command
LIST:SAMP:VOLT B.66 [SOURce:]LIST:SAMPle:VOLTage COMMAND Syntax: Short Form: LIST:SAMP:VOLT average,value Long Form: LIST:SAMPle:VOLTage average,value where: average = number of measurements = integer: 2,4,8,16,32,64,128 or 256 value = programmed current (Amps) for current list, or programmed voltage (Volts) for voltage list. Description: Samples output voltage. <Value> is either programmed current in Amperes, or programmed voltage in Volts.
Page 169: [Sour Ce :]List:set:trig
LIST:SET:TRIG? B.71 [SOURce:]LIST:SET:TRIGger? QUERY Syntax: Short Form: LIST:SET:TRIG? Long Form: LIST:SET:TRIGger? Returns <value> = trigger pulse-width between 0.00025 and 0.034 second Description: Returns trigger pulse-width. If trigger pulse duration has not been set, error 100- “command error” results LIST:SET:WAIT B.72 [SOURce:]LIST:SET:WAIT COMMAND Syntax: Short Form: LIST:SET:WAIT value Long Form: LIST:SET:WAIT value...
Page 170: B-6 Using List:wait Commands To Control Generation Of A Waveform Measured By Multiple External Devices Using A Single External Pulse
NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2. The WAIT commands provide a method to synchronize multiple instruments to a common control pulse. This example assumes BOP and a number of switching DVMs are connected to a Unit Under Test (UUT).
Page 171 NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2. This example assumes a BOP and a DVM is connected to a Unit Under Test (UUT). The DVM is connected to EXT_E/ EXT_C (pins 5/6 of the BOP External Protection port). When the BOP out- puts a low EXT_E/ EXT_C, The DVM takes a series of measurements and places its wait line low.
Page 172: [Sour Ce :]List:volt:appl
LIST:VOLT:APPL B.77 [SOURce:]LIST:VOLT:APPLy COMMAND Syntax: Short Form: LIST:VOLT:APPL <type>,<value1>,<value2>[,<value3>] Long Form: LIST:VOLTage:APPLy <type>,<value1>,<value2>[,<value3>] Where <type> is {SQUARE | RAMP+ | RAMP- | TRIANGLE | SINE | LEVEL} <value1> is frequency (or period (duration) for level) <value2> is p-p amplitude (or amplitude (offset) for level) <value3>...
Page 173: Source:]List:wait:ledge Command
NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2. The WAIT commands provide a method to synchronize multiple instruments to a common con- trol pulse. This example assumes BOP and a number of switching DVMs are connected to a Unit Under Test (UUT).
Page 174: Source:]List:wait:low Command
LIST:WAIT:LOW B.83 [SOURce:]LIST:WAIT:LOW COMMAND Syntax: Short Form: LIST:WAIT:LOW value Long Form: LIST:WAIT:LOW value where: <value> = programmed current (Amps) for current list, or programmed voltage (Volts) for voltage list. Description: Waits for the trigger input to go low before advancing to next step. When the command is exe- cuted the output is immediately set to the <value>.
Page 175: Age [:Lev El ]:Lim It :Neg Ative Command
VOLT:LIM:NEG B.88 [SOURce:]VOLTage[:LEVel]:LIMit:NEGative COMMAND Syntax: Short Form: [SOUR:]VOLT[:LEV]:LIM:NEG <value> Long Form: [SOURce:]VOLTage[:LEVel]:LIMit:NEGative <value> where <value> is between zero and rated (nominal) output voltage Description: Establishes the software limit <value> for negative output voltage, i.e., sets the maximum value of negative output voltage that the unit will be allowed to produce. Requires MEM:UPD (PAR. B.12) to save for power up.
Page 176: Age :Mode? Query
VOLT:MODE? B.93 [SOURce:]VOLTage:MODE? QUERY Syntax: Short Form: [SOUR:]VOLT[:LEV]:MODE? Long Form: [SOURce:]VOLTage[:LEVel]:MODE? Return value: FIX, LIST, TRANS, EXT, or GAIN Description: Identifies active voltage mode. See PAR. B.92 for further details Related Commands: LIST com- mands. (See example, Figure B-5.) VOLT:PROT[:BOTH] B.94 [SOURce:]VOLTage[:LEVel]:PROTect:BOTH COMMAND Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT[:BOTH] <value>...
Page 177: Age [:Lev El ]:Prot Ect :Neg Ative Command
VOLT:PROT:NEG B.98 [SOURce:]VOLTage[:LEVel]:PROTect:NEGative COMMAND Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT:NEG <exp_value> Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:NEGative <exp_value> where <value> is between minimum (box) value (Figure 1-3) and 1% above rated (nominal) output voltage. Description: Establishes the negative protection limit for voltage; maximum is 1% greater than rated output voltage. VOLT:PROT:NEG? B.99 [SOURce:]VOLTage[:LEVel]:PROTect:NEGative? QUERY Syntax:...
Page 178: Age [:Lev El ]:Prot Ect :Lim It :Neg Ative ? Query
B.105 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:NEGative? QUERY VOLT:PROT:LIM:NEG? Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT:LIM:NEG? Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:NEGative? Returns: <exp_value> Description:Identifies the minimum (maximum absolute) value possible for the negative protection limit for voltage. B.106 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:POSitive COMMAND VOLT:PROT:LIM:POS Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT:LIM:POS <exp_value> Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:POSitive <exp_value> where <value>...
Page 179: Status:operation:enable Command
STAT:OPER:ENAB B.111 STATus:OPERation:ENABle COMMAND Syntax: Short Form: STAT:OPER:ENAB <int_value> Long Form: STATus:OPERation:ENABle <int_value> Description: Sets Operation Enable Register. The Operation Enable Register is a mask for enabling specific bits in the Operation Event Register which will cause the operation summary bit (bit 7) of the Status Byte register to be set Bit set to 1 = function enabled (active, true);...
Page 180: Status:questionable:enable Command
STAT:QUES:ENAB B.117 STATus:QUEStionable:ENABle COMMAND Syntax: Short Form: STAT:QUES:ENAB <int_value> Long Form: STATus:QUESionable:ENABle <int_value> Description: Programs Questionable Condition Enable Register (see Table B-4).The Questionable Condition Enable Register determines which conditions are allowed to set the Questionable Condition Register; it is a mask for enabling specific bits in the Questionable Event register that can cause the question- able summary bit (bit 3) of the Status Byte register to be set.
Page 181: Status:questionable:enable? Query
STAT:QUES:ENAB? B.118 STATus:questionable:ENABle? QUERY Syntax: Short Form: STAT:QUES:ENAB? Long Form: STATus:QUESionable:ENABle? Return Value: <int_value> actual register value Description: Reads Questionable Condition Enable Register (see Table B-4). Power supply returns value of Questionable Condition Enable Register, indicating which conditions are being monitored. Bit set to 1 = function enabled (active, true);...
Page 182: System:communication:serial:pace Command
SYST:COMM:SER:PACE B.126 SYSTem:COMMunication:SERial:PACE COMMAND Syntax: Short Form: SYST:COMM:SER:PACE {NONE | XON} Long Form: SYSTem:COMMunication:SERial:PACE {NONE | XON} Description: Enables (XON) or disables (NONE) data flow control via the serial interface (see PAR. 3.5.6.2.1). See PAR. 3.5.2.2 and Figure 3-16 for special programming considerations. SYST:COMM:SER:PACE? B.127 SYSTem:COMMunication:SERial:PACE? QUERY Syntax:...
Page 183: System:keyboard? Query
Description: Identifies whether unit it in remote mode (1) or local mode (0) during serial (RS 232) communi- cation. See PAR. 3.5.6.3 and Figure B-11. *IDN? Unit responds with KEPCO,BOP 50-20,E1234,1.66 (typical). outp? Unit responds with 0 indicating output is off syst:rem? Unit responds with 0 indicating unit is in local mode.
Page 184: System:security:immediate Command
SYST:SEC:IMM B.141 SYSTem:SECurity:IMMediate COMMAND Syntax: Short Form: SYST:SEC:IMM Long Form: SYSTem:SECurity:IMMediate Description: Initializes all NVRAM variable to factory defaults. Empties all memory locations. See PAR. 3.5.2.2 and Figure 3-16 for special programming considerations. This command is password protected (must be preceded by SYST:PASS:CEN (see PAR B.135). SYST:SET B.142 SYSTem:SET COMMAND Syntax:...
Page 185: Trigger:source Command
2yy02,"CROWBAR ACTIVE" the BOP power supply or an auxiliary power supply, such as 2yy03,"DEVICE TURNED OFF" Kepco’s MST, MAT, MBT or low power (under 1KW) BOP, connected to the BITBUS. The last two digits of the error 2yy04,\"CURRENT FAULT" 2yy05,"POWER LOSS"...
Page 186 TABLE B-5. ERROR MESSAGES (CONTINUED) ESR ERROR BIT SET ERROR MESSAGE EXPLANATION (SEE PAR. A.5) -221,”Settings Conflict” Calibration state not enabled but CALibrate command Execution error bit 4 received -222,“Current, Voltage or Data out of Value (current or voltage) exceeds power supply rating or Execution error bit 4 range”...
Page 187 . Repeat for all parameters, then to exit or to save for power-up (see PAR. 3.3.7). KEPCO, INC. $ 131-38 SANFORD AVENUE $ FLUSHING, NY. 11355 U.S.A. $ TEL (718) 461-7000 $ FAX (718) 767-1102 http://www.kepcopower.com $ email: hq@kepcopower.com ©2005, KEPCO, INC...
Page 188 +Voltage Max, -Voltage Min, +Current Max or -Current Min as desired, , press CLEAR to set to zero, then to exit or to save for power-up (see PAR. 3.3.4). Can I further customize the configuration? Yes, contact Kepco for further information.

KEPCO BOP 1000W Operator's Manual

Quick Links

POWER SUPPLY

Related Manuals for KEPCO BOP 1000W

Summary of Contents for KEPCO BOP 1000W