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KEPCO BOP 1000W Operator's Manual

Kepco high power bipolar power supply
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OPERATOR'S MANUAL
HIGH POWER BIPOLAR POWER SUPPLY
KEPCO INC.
An ISO 9001 Company.
IMPORTANT NOTES:
1)
This manual is valid for the following Model and associated serial numbers:
MODEL
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, (718) 461-7000, 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.
©2008, KEPCO, INC
P/N 243-1027R8H
KEPCO, INC. ! 131-38 SANFORD AVENUE ! FLUSHING, NY. 11355 U.S.A. ! TEL (718) 461-7000 ! FAX (718) 767-1102
BOP 1000W
MODEL
BOP 1000W

POWER SUPPLY

ORDER NO.
SERIAL NO.
email: hq@kepcopower.com ! World Wide Web: http://www.kepcopower.com
REV. NO.
REV. NO.
KEPCO
THE POWER SUPPLIER™
®

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Summary of Contents for KEPCO BOP 1000W

  • Page 1: Power Supply

    Data subject to change without notice. KEPCO ® ©2008, KEPCO, INC P/N 243-1027R8H 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 022108...

  • 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 working with active loads, the voltage or current of the active load must not exceed the maximum voltage or current rating of the BOP. Oth- erwise the overvoltage or overcurrent protection will shut down the pow- er supply.

  • Page 9: 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 ............................1-12 Remote Control ............................1-12 Features ..............................1-12 1.6.1 Digital Calibration..........................1-12 1.6.2 voltage/current Protection........................1-12 1.6.3 Waveforms............................
  • Page 10 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 11 TABLE OF CONTENTS SECTION PAGE 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 ..............3-42 3.5.3 Remote Mode Setup..........................
  • Page 12 TABLE OF CONTENTS SECTION PAGE 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 ........................3-62 SECTION 4 - CALIBRATION General ..............................4-1 Test Equipment Requirements ....................... 4-3 Calibration using Remote SCPI commands via GPIB or RS 232 Interface ..........
  • Page 13 TABLE OF CONTENTS SECTION PAGE tion B.17 [SOUR :]FUNC :MODE? Query..................... B-5 tion B.18 [SOUR :]FUNC :MODE:TRIG Command................. B-5 tion B.19 [SOUR :]FUNC :MODE:TRIG ? Query ..................B-5 B.20 [SOUR :]LIST:CLE Command ......................B-5 B.21 [SOUR :]LIST:COUN Command......................B-6 B.22 [SOUR :]LIST:COUN ? Query......................
  • Page 14 TABLE OF CONTENTS SECTION PAGE itive B.74 [SOUR :]VOLT [:LEV ]:LIM :pos ? Query ................B-17 B.75 [SOUR :]VOLT :MODe Command....................B-17 B.76 [SOUR :]VOLT :MODE? Query ...................... B-17 B.77 [SOUR :]VOLT [:LEV ]:PROT :BOTH Command ..............B-17 B.78 [SOUR :]VOLT [:LEV ]:PROT...
  • Page 15 LIST OF FIGURES FIGURE TITLE PAGE High Power BOP Series Power Supply ......................x 1000W BOP Power Supply, Outline Drawing ..................... 1-10 BOP Output Characteristics ........................1-14 BOP Series Rear Panel ..........................2-1 Load Connections, Local Sensing ......................2-11 Load Connections, Remote Sensing ......................2-12 Parallel Configuration, Local Sensing, Typical....................
  • Page 17 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 ..............................1-16 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 18 FIGURE 1-1. HIGH POWER BOP SERIES POWER SUPPLY BOP-1K 022108...

  • Page 19: 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 20: Input Characteristics

    TABLE 1-2. BOP GENERAL SPECIFICATIONS SPECIFICATION RATING/DESCRIPTION CONDITION INPUT CHARACTERISTICS a-c voltage nominal 230 Va-c Single phase range 176 - 264 Va-c Frequency nominal 50-60 Hz >65 Hz, leakage exceeds spec range 47 - 65 Hz Current 176 Va-c 9.5A maximum 264 Va-c 6.4A...
  • Page 21 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION OUTPUT CHARACTERISTICS (Continued) µ 5 ms (default) range (voltage or current): 500 sec to 500ms measurement rate Readback range (voltage + current): 1msec to 250ms rate/array measurement array 64 samples Voltage 128 samples Current Voltage stabilization in...
  • Page 22 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION PROGRAMMING/DISPLAY CHARACTERISTICS –10V to +10V Full range output, 20K Ohm input impedance Analog control Main channel (voltage or current) (see PAR. 3.4) Protection Limit +Voltage, –Voltage +1V to +10V 10% to 100% of Nominal Range. Input voltage channels: +Current, –Current clamped to 12V through 1K ohms.
  • Page 23 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION FUNCTION GENERATOR CHARACTERISTICS (Continued) Maximum number of points per basic waveform Local: 3933 Remote: Can be set to either 3933 (normal resolution- default value) or 5760 (high resolution), using the LIST:RES command. •...
  • Page 24 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION 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) Skip feature: a number of steps can be •...
  • Page 25 TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION FUNCTION GENERATOR CHARACTERISTICS (Continued) Amplitude Resolution (Programming) Main Channel and Offset Voltage (millivolts a-c) Sine (millivolts d-c) Triangle, Square, ±Ramp, Level: Current (milliamperes a-c) Sine (millivolts d-c) Triangle, Square, ±Ramp, Level: Protection Limit Channel .

  • Page 26: Miscellaneous Features

    Factory defaults: Main: DEFAULT, Password Types 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 27: Physical Characteristics

    TABLE 1-2. BOP GENERAL SPECIFICATIONS (Continued) SPECIFICATION RATING/DESCRIPTION CONDITION GENERAL (ENVIRONMENTAL) CHARACTERISTICS Temperature operating 0 to +50 deg C Full rated load storage -20 to +85 deg C Cooling Two internal fans exhaust to the rear Humidity 0 to 95% RH non-condensing Shock 20g.
  • Page 28 18.805 [477.63] 18.018 [457.64] 17.675 [448.93] 16.835 [427.60] OBROUND 0.25x0.453 (4 LOC 18.235 [463.16] 18.985 [482.21] FIGURE 1-1. 1000W BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 1 OF 2) 1-10 BOP HIPWR 022108...

  • Page 29: Rear View

    REAR VIEW 22.000 [558.79] SLIDES TRAVEL DISTANCE: 23.000 [584.2] SEE NOTE 6. FIGURE 1-1. BOP POWER SUPPLY, OUTLINE DRAWING (SHEET 2 OF 2) 1-11 BOP HIPWR 022108...

  • Page 30: 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 31: Saving And Recalling Settings

    to be repeated). Each waveform consists of up to 10 segments; each segment is assigned one of six basic waveform types: square, sine, triangle, negative ramp, positive ramp and level. Depending on the waveform type, frequency, peak-to-peak amplitude, offset, and start and stop phase angle are then assigned by the user.
  • Page 32 pating energy from an active load. To minimize energy dissipation, the BOP employs energy recuperation, where energy sinked from an active load is passed backwards through the output circuit and the bidirectional input power factor correcting circuit to the a-c power lines, where it becomes available for reuse.

  • Page 33: Equipment Supplied

    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 34 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 35: 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 36 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 37 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 38 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 39 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 40: 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 41 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 42: 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 1-1). 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 1-1). CAUTION: THE RACK MUST PROVIDE SUPPORT AT THE REAR (WITHIN 6 INCHES OF THE REAR PANEL).

  • Page 43: 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 44: 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 45: Cooling

    COOLING The power devices used within the power supply are maintained within their operating tempera- ture range by means of internal heat sink assemblies and by two cooling fans. Periodic cleaning of the power supply interior is recommended. If the power supply is located within a confined space, take care that the ambient temperature, which is the temperature of the air immediately surrounding the power supply, does not rise above the specified limits (see Table 1-2).

  • Page 46: Setup For Remote Operation Via Gpib

    FIGURE 2-3. LOAD CONNECTIONS, REMOTE SENSING 2.7.3 SETUP FOR REMOTE OPERATION VIA GPIB With all power off, connect the load to the BOP using either local or remote sensing. If units are to be connected in series or parallel, refer to PAR. 2.8. Connect the GPIB connector to the GPIB port (see Figure 2-1 and Table 2-1).

  • Page 47: Multiple Unit Source Power

    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 48 FIGURE 2-4. PARALLEL CONFIGURATION, LOCAL SENSING, TYPICAL 2-14 BOP HIPWR 022108...
  • Page 49 FIGURE 2-5. PARALLEL CONFIGURATION, REMOTE SENSING, TYPICAL 2-15 BOP HIPWR 022108...
  • Page 50 FIGURE 2-6. SERIES CONFIGURATION, LOCAL SENSING, TYPICAL 2-16 BOP HIPWR 022108...
  • Page 51 FIGURE 2-7. SERIES CONFIGURATION, REMOTE SENSING, TYPICAL 2-17 BOP HIPWR 022108...

  • Page 52: 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 53 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 54 3. Turn on the unit to be configured as a master and note that upon power up the FAULT light will go on (this is normal). Proceed as follows: 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).
  • Page 55 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 56: Operating Instructions For Multiple Unit Combinations

    VOLTAGE SOURCE 0.0000 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 57: 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 59 FIGURE 2-12. 3 X 2 (3 SERIES X 2 PARALLEL) CONFIGURA- -24/(-25 TION, LOCAL SENSING, TYPICAL 2-25/(2-26 Blank) 022108 C-25...

  • Page 61: 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 62 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 63: 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 64 VOLTAGE SOURCE 0.0000 0.0402 VOLTAGE 0000 FIGURE 3-3. POWER-UP SCREEN SHOWING GRAPHIC METERS VOLTAGE SINK 0.0000 0.0402 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.

  • Page 65: 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 66: 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. 3.2.5.3.

  • Page 67: 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 68: 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 69: 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 70: Enabling/Disabling Audible Beeps

    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 71: Local Mode Operation

    LOCAL MODE OPERATION Local operation of the BOP power supply can be accomplished from the front panel via the 27 key keypad, and the ADJUST knob. All indications are provided by the 4-inch graphical display (LCD). 3.3.1 SETTING LOCAL MODE When the power supply is turned on, it is automatically set to Local mode.

  • Page 72: Selecting Bipolar/Independent Protection Limits

    2. Verify that the load has been configured properly to ensure that the unit behaves as expected when the output is off (see PAR. 3.3.6 for details). 3. Press MODE key to select the main channel (VOLTAGE or CURRENT); the associated PROTECT channel is automatically selected and displayed.
  • Page 73 TABLE 3-4. VOLTAGE AND CURRENT PARAMETER DEFINITIONS To modify refer to PAR. Term Definition Local Remote The nominal (rated) output voltage of the unit determined by model; e.g. for Onom –E a BOP 36-28MG, ±E is 36V. Onom Onom The nominal (rated) output current of the unit determined by model; e.g. for Onom –I a BOP 36-28MG, ±I...
  • Page 74 Press from the power-up screen to enter the General Setup menu (Figure 3-6), then high- light Max/Min Settings. Press to enter the Max/Min Settings submenu (Figure 3-7). (If a Password is required, see PAR. 3.2.4.4 for instructions.) Highlight Protect Entry and press change it.

  • Page 75: Understanding Voltage And Current Protect Limits

    tion values (+25, –7) will remain in place until a new value is entered in the Voltage Protection field. When a new Voltage Protect setting, e.g., 22V, is entered with BIPOLAR mode selected, +Voltage Protect is set to +22V and -Voltage Protect to –22V. NOTE: The use of remote programming (via RS 232 or GPIB) automatically asserts Indepen- dent protection limits.

  • Page 76: Changing Maximum Accepted Voltage Or Current (Main Channel Software Limits)

    TABLE 3-5. MAX/MIN SETTINGS MENU CHOICES SETTING FUNCTION (BOLD = Factory Default) Protect Entry BIPOLAR BIPOLAR - Causes a single protection limit value (one for voltage, one for cur- INDEPENDENT rent) to apply to both ± limits. Only one value is displayed and edited from the front panel.

  • Page 77: Changing Maximum/Minimum Protection Software-Controlled Limits

    capable of delivering ±28A in current mode can be configured to allow current to be adjusted from –0.5A to +10A by setting –Current Min to –0.5 and +Voltage Max to +10. Adjustment range is between 0 and E for voltage and 0 and I for current.

  • Page 78: External Limits

    range is between a minimum (box) value (see Figure 1-2) and 1% above the nominal (rated) value. CAUTION: WHEN WORKING WITH ACTIVE LOADS, ALWAYS ADJUST THE BOP PRO- TECTION LIMITS TO BE ABOVE THE MAXIMUM VALUES OF VOLTAGE OR CURRENT EXPECTED FROM THE LOAD. FOR EXAMPLE, WHEN THE BOP IS OPERATING IN VOLTAGE MODE SINKING ENERGY FROM A CONSTANT CURRENT TYPE LOAD, SET THE CURRENT PROTECTION LIMITS OF THE BOP ABOVE THE MAXIMUM CURRENT EXPECTED FROM THE LOAD.
  • Page 79 WARNING For inductive loads, and especially superconducting magnet type loads, the inherent offset of the BOP in the OFF state may generate sig- nificant current in the circuit. A properly rated switch in parallel with a resistor must be connected between the power supply and the load. The switch must be open and the BOP front panel LCD must read 0V, 0A before removing or installing connections between BOP and load.

  • Page 80: Changing The Default Power Up Settings

    BATTERY . This mode is necessary for the power supply to function properly and safely with either battery or constant-voltage-type active electronic loads. This mode prevents the battery from discharging during the OFF state. When the output is disabled (set to OFF), the BOP will go to current mode, current will be set to zero, with voltage protect and current limit set to maxi- mum.

  • Page 81: Storing/Recalling Power Supply Output Settings

    word is required, see PAR. 3.2.4.4 for instructions.) Highlight the parameter and press modify. Use or the ADJUST control to highlight a selection, then press to save. To change a value use the number keys to enter new setting, then to save.

  • Page 82: Understanding Abbreviations Used For Saved Settings

    3.3.8.1 UNDERSTANDING ABBREVIATIONS USED FOR SAVED SETTINGS The parameters listed in Table 3-8 are displayed, followed by a listing of the first 20 memory locations, displayed in two rows of ten. Use keys to display additional columns or navigate to the desired location. Locations that are not empty show an abbreviated representation of the saved settings.

  • Page 83: Viewing Saved Settings

    3.3.8.2 VIEWING SAVED SETTINGS 1. Pressing from the power-up screen displays the Saved Setups screen (Figure 3-8) con- sisting of a list of locations 1 through 20 arranged in two columns of 10 rows. Use keys to display additional columns. NOTE: Use the number keys as a shortcut, e.g., press- ing 4 immediately highlights location 41, showing the column with locations 41 through 50.

  • Page 84: Copying Previously Saved Settings To A New Location

    NOTE: If a value to be saved is beyond the range of the unit, the value saved will be limited to the maximum value. If the Mode is changed, the numerical values for the main and protection channels must be revised accordingly. •...

  • Page 85: Waveform Overview

    3.3.9.2 WAVEFORM OVERVIEW After observing the precautions of PAR. 3.3.9.1, the Saved Waveforms screen (Figure 3-9) is entered by pressing from the power-up screen (Figure 3-3). Waveforms that have been pre- viously saved will be displayed with the previously assigned names; waveforms that have been erased will appear as Empty.

  • Page 86: Waveform Specifications

    Note that a single segment between 0.01Hz and 1.8Hz uses all available points, so subsequent segments will not be accepted. Four segments of 2.81Hz will be acceptable, while five seg- ments at 2.81 Hz will not be accepted. Reducing the segment by using the start and stop angle will also reduce the number of points used.

  • Page 87: Viewing Stored Waveforms

    TABLE 3-10. SQUARE WAVEFORM FREQUENCY VS. POINTS Frequency Frequency (See Note 1) (See Notes 1) Total Points Total Points From From 16.31Hz 21.7Hz 217.6Hz 261.0Hz 21.71Hz 27.1Hz 261.1Hz 435.0Hz 27.11Hz 32.6Hz 435Hz 652.5Hz 55.5Hz 66.5Hz 1000 NOTE: 1. As the frequency varies within the range, the time interval per point varies proportionately. 3.3.9.5 VIEWING STORED WAVEFORMS After observing the precautions of PAR.

  • Page 88: Modifying Previously Stored Waveforms

    To stop execution, press . This stops waveform execution and puts the unit into standby (STANDBY indicator on). While the waveform is executing, the display shows a graphic of the programmed waveform (repeating segments only) below the message Waveform Executing . WARNING Be sure that output power is OFF (Standby indicator lit) while connect- ing monitoring device.

  • Page 89: Creating A New Waveform

    TABLE 3-11. WAVEFORM SEGMENT DETAILS MENU SETTING CHOICES FUNCTION Offset xxx.xxx DC level on which the waveform (centered) will ride or Amplitude for Level segments. (Volts or Amperes) Volts or Amperes determined by mode selected for waveform. E.g. for BOP 100- 10MG, to specify a positive ramp that goes from +30V to +80V, set amplitude to +50V and offset to +55V.

  • Page 90: Using Segments To Build A Waveform

    2. Assign a name to the waveform: highlight Name, press to modify, change the name using the keys or ADJUST or the multiple presses of the numeric keys (see PAR. 3.2.4.2 for details). Press to save or to abort.the change and exit. TABLE 3-12.
  • Page 91 FIGURE 3-11. SAMPLE WAVEFORM 1. After observing the precautions of PAR. 3.3.9.1, press from the power-up screen to enter the Saved Waveforms screen (Figure 3-9), highlight a waveform designated Empty and press to create a new waveform. 2. The initial waveform settings are displayed (see Table 3-11 and Table 3-12 for parameter details.
  • Page 92 When complete, press to save for power-up. This step changes the 2ms, 0V level to be executed only once at the beginning of the waveform. 4. From the Waveform Settings screen, highlight segment LEVEL 0.002s 0.00 I and press to insert a new segment. Use to modify the following settings of the new segment.

  • Page 93: Copying A Waveform

    3.3.9.10 COPYING A WAVEFORM After observing the precautions of PAR. 3.3.9.1, press from the power-up screen to enter the Saved Waveforms screen (Figure 3-9). Highlight one of the stored waveforms, then press . Then highlight a waveform location designated Empty and press to save or to abort the change and exit.

  • Page 94: Analog Remote Mode Programming

    TABLE 3-13. ERROR MESSAGE EXPLANATIONS (CONTINUED) ERROR MESSAGE EXPLANATION Series or Parallel when not Mismatch between Unit type and Connection type. Automatically reverts to STANDALONE Unit type: Standalone, Connection Type: standalone. Calibration invalid - Multiple Unit Consult Factory. BITBUS option must be Disabled Change CIIL mode to SCPI.

  • Page 95: Remote Shutdown

    3.4.1.1 REMOTE SHUTDOWN A standalone unit can be shut down using a remote signal applied to the PROTECTION EXT. PORT as shown in Figure 3-12 or 3-13. A multiple unit configuration (parallel, series or series- parallel) can be disabled by applying a remote signal to the master PAR/SER PROTECTION PORT as shown in Figure 3-12 or 3-14.

  • Page 96: Remote Standby

    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. When the signal is momentarily active (short or logic 0 for a minimum of 100 microseconds), the output is set to OFF after a maximum delay of 200 milliseconds and the STANDBY indicator goes on.

  • Page 97: Fixed Gain Using External Reference Control

    TABLE 3-14. REVISIONS/TEST MENU CHOICES SETTING FUNCTION (BOLD = Factory Default) MAXIMUM OUTPUT (Cannot be highlighted) Displays rated output voltage and current of power supply. including all slaves VOLTAGE XX XX.0 connected in parallel or series. CURRENT YY YY.0 TEST DISPLAY Status (see NOTE below) Automatic test, reports status messages (see NOTE below).
  • Page 98 TABLE 3-15. ANALOG REMOTE SETUP MENU CHOICES SETTING FUNCTION (BOLD = Factory Default) REFERENCE INPUT INTERNAL INTERNAL: Any external reference applied to the Analog I/O port pin 11 is PIN 11 EXTERNAL ignored and the output is controlled using either the local front panel keypad (referenced to pin 4) EXTL REF LVL (see PAR.

  • Page 99: Variable Gain Using External Reference Level

    voltage for a user-determined software limit) clipping of the output voltage or current to the limit will occur. NOTE: If the system limits have been modified (PAR. 3.3.4), the output of the power supply will never exceed the modified system limits. E.g, for a BOP 36-28MG, if the system volt- age limit is modified to ±18V, applying a positive analog voltage to pin 11 that starts at zero and rises to +10V causes the output to rise from zero and reach +18V when the external reference reaches +5V.

  • Page 100: 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 101: 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 102: Making Sure The Previous Command Is Complete

    mode will be, so the unit is never uncontrolled, response is quick and no transients are possible. Recommended programming techniques are: 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.

  • Page 103: 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 104: 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 105: 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 106: 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 107 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 108: 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 109: 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 110: 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 111: 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 112: 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 113 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 114: 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 115: 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 :CURRent val,val [:AMPLitude]? MIN, MAX [:AMPLitude]? MIN, MAX APPLy :TRIGgered :TRIGgered SWEep [:AMPLitude] val [:AMPLitude] val SWEep? [:AMPLitude]? MIN, MAX [:AMPLitude]? MIN, MAX...

  • Page 116: 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 022108...

  • Page 117: 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 118: 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 119: 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 120: 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 121 FIGURE 3-20. STATUS REPORTING STRUCTURE A zero to one transition of a condition register is added to the event register if the specific bit in the enable register is also a 1. Reading an event register clears all of the bits found in the event register.

  • Page 122: Operational Status Register

    3.6.7.2 OPERATIONAL STATUS REGISTER The OPERational condition register contains conditions which are a part of the instrument’s nor- mal operation. The definition of each of these bits (condition register) is as follows: • 1 through 7 - Not Used — always zero. •...
  • Page 123 /**************************************************************************/ /* Sample Program For KEPCO power supply, using National Instruments */ /* GPIB interface card and IBM PC or compatible computer /**************************************************************************/ #include <stdio.h> #include "decl.h" char rd_str[80]; // Input buffer char dat_str[80]; // Output buffer int bd,adr; main() { adr = ibfind("DEV6");...

  • Page 125: 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 126 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 127: 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 128: 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 129: 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 130 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 131 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 132 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 133 18.Set the BOP to maximum positive output current by sending CAL:CURR MAX . Measure the current by reading the voltage across the sense resistor. To adjust, send CAL:DATA com- mands as needed (see PAR. 4.3b) to adjust the BOP output until the DVM reads as close as possible above the nominal full scale value within tolerance specified in Table 4-4 for +FULL SCALE CURRENT.

  • Page 134: Calibration Using Front Panel Keypad In Local Mode

    connector (A2A5J6). Then send the CAL:ZERO command. This enables the BOP to recog- nize that the voltage at the ILIM_EXTERNAL pins is 0V. 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).
  • Page 135 1. From the power-up screen, press to enter the General Setup menu, then highlight Cali- bration and press 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: •...

  • Page 136: Calibration Procedure Using Local Mode

    • or ENTER - EXIT - Exit Voltage or Current Calibration 4. Pressing , or displays following explanations for the function keys: CAUTION: IF THE CALIBRATE ZERO FUNCTION IS AVAILABLE, PERFORM THIS FUNCTION FIRST, AS IT AFFECTS ALL OTHER OUTPUT CALIBRATIONS. •...
  • Page 137 1. From the power-up screen, press to enter the General Setup menu, then highlight Cali- bration and press . Enter the password (see PAR. 3.2.4.4), and press , The LCD shows main calibration screen. 2. Press - VOLTAGE, - INTERNAL, - ZERO to set the BOP to zero volts output.
  • Page 138 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 139 21.Press - NEGATIVE to adjust the minimum (maximum negative) current protection limit of the power supply. Adjust as needed until the DVM reads as close as possible above the nominal full scale value within tolerance specified in Table 4-4 for –FULL SCALE CPR LIMIT. Press twice.

  • Page 140: 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 141: 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 142: 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 143: Opc? - Operation Complete Query

    Returns 32 (bit 5 set), indicating Command Error has occurred since the last time the register was read. *IDN? Power supply returns: KEPCO, BOP_1000W 36-28 123456 1.43. *OPC Allows status bit 0 to be set when pending operations complete VOLT 21;CURR 3 If unit is in voltage mode, sets output voltage to 21V, output current protection limit to 3A.

  • Page 144: 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 Support for CALibrate is present.

  • Page 145: 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 146: Tst? - Self Test Query

    *TST? A.17 *TST? — SELF TEST QUERY Syntax: *TST? Returned value: 0 or 1 (0 = pass test, 1 = fail test) Description: Power Supply test.This query causes the power supply to do a self test and provide the controller with pass/fail results.

  • Page 147: 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.120, arranged in groups as they appear in the tree diagram, Figure 3-18. Table B-1 provides a quick reference of all SCPI sub- system commands and queries used in the BOP.

  • Page 148: Numerical Values

    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 149: Initiate[:Immediate] Command

    INIT[:IMM] INITiate[:IMMediate] COMMAND Syntax: Short Form: INIT:[IMM] Long Form: INITiate[:IMMediate] Description: Enables a single trigger. This command enables a single trigger. A *TRG command completes the sequence. Upon receipt of the *TRG command, the power supply will return to the commanded values of voltage and current established by the VOLT:TRIG and CURR:TRIG commands.

  • Page 150: Output[:State] Command

    NOTES: 1. The power supply is assumed to be operating in constant voltage mode. 2 Examples below are intended only to illustrate command functions. Refer to PAR. 3.5.2 for pro- gramming techniques to optimize performance. OUTP ON Turns the output on. VOLT 21;...

  • Page 151: Output[:State] Query

    OUTP? B.13 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.14 OUTPut:MODE COMMAND Syntax:...

  • Page 152: [Sour Ce :]List:coun ? Query

    LIST:COUN B.21 [SOURce:]LIST:COUNt COMMAND Syntax: Short Form: LIST:COUN<int_value 0 to 255> Long Form: LIST:COUNt> <int_value 0 to 255> Description: Establishes how many times the list is executed. Allows user to establish how many times the list (established by LIST:GEN DSEQ or LIST:GEN SEQ and LIST:SEQ) is executed. The order (beginning to end or end to beginning) is determined by LIST:DIR.

  • Page 153: [Sour Ce :]List:curr:appl

    LIST:CURR:APPL B.25 [SOURce:]LIST:CURR:APPLy COMMAND Syntax: Short Form: LIST:CURR:APPL <type>,<value1>,<value2>[,<value3>] Long Form: LIST:CURRent: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 154: [Sour Ce :]List:dwel

    LIST:DWEL? B.30 [SOURce:]LIST:DWELl ? QUERY Syntax: Short Form: LIST:DWEL? Long Form: LIST:DWELl? Return Value: <value> Description: Identifies the dwell times entered for the list. Starting at location established by LIST:QUERy, returns comma-separated list of up to 16 values indicating the dwell time parameters entered. i.e., the contents of LIST:DWEL locations of Table B-2.
  • Page 155 LIST:QUER B.32 [SOURce:]LIST:QUERy COMMAND Syntax: Short Form: LIST:QUER <int_value> Long Form: LIST:QUERy <int_value> int_value = <n> where n = first location to be queried. Description: Determines first location to be queried by LIST:VOLT?, LIST:CURR? or LIST:DWEL? queries. Related Commands: LIST:VOLT?, LIST:CURR?, LIST:DWEL?. LIST:QUER?. (See example, Figure B-2.) LIST:QUER? B.33 [SOURce:]LIST:QUERy? QUERY Syntax:...

  • Page 156: [Sour Ce :]List:res Olution ? Query

    LIST:RES? B.34 [SOURce:]LIST:RESolution? QUERY Syntax: Short Form: LIST:RES? Long Form: LIST:RESolution? Return Value: <value1>,<value2>,<value3> (where <value1> and <value2> = clock period, <value3> = number of points to be used) Description: Identifies whether resolution is set to minimum (3840) or maximum (5900) and indicates the clock period.

  • Page 157: Age :Swe Ep ? Query

    LIST:VOLT:SWE? B.39 [SOURce:]LIST:VOLTage:SWEep? QUERY Syntax: Short Form: LIST:VOLT:SWE? Long Form: LIST:VOLTage: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:VOLT:POIN? B.40 [SOURce:]LIST:VOLTage:POINts? QUERY Syntax: Short Form: LIST:VOLT:POIN? Long Form: LIST:VOLTage:POINts? Return Value: <n>...
  • Page 158 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 ::Neg? Query

    CURR:LIM:NEG? B.46 [SOURce:]CURRent[:LEVel]:LIMit::NEG? QUERY Syntax: Short Form: [SOUR:]CURR[:LEV]:LIM:NEG? Long Form: [SOURce:]CURRent[:LEVel]:LIMit:NEGative? Returns <value> Description: Identifies the negative software limit value of output current that the unit can source (quadrant 3, Fig- ure 1-2) or sink (quadrant 2). CURR:LIM:POS B.47 [SOURce:]CURRent[:LEVel]:LIMit::POS COMMAND Syntax: Short Form: [SOUR:]CURR[:LEV]:LIM:POS <value>...

  • Page 160: Ent [:Lev El ]:Prot Ect [:Both] Command

    CURR:PROT[:BOTH] B.51 [SOURce:]CURRent[:LEVel]:PROTect[:BOTH] COMMAND Syntax: Short Form: [SOUR:]CURR[:LEV]:PROT:BOTH <value> Long Form: [SOURce:]CURRent[:LEVel]:PROTect:BOTH <value> where <value> is between minimum (box) value (Figure 1-2) and 1% above rated (nominal) output current. Description: Establishes both the positive and negative protection limits for current, the maximum current the unit is set up to source and sink;...
  • Page 161 B.59 [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 1-2) 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.65 [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: Age [:Lev El ]:Lim It :Neg Ative ? Query

    VOLT:LIM:NEG? B.72 [SOURce:]VOLTage[:LEVel]:LIMit:NEGative? QUERY Syntax: Short Form: [SOUR:]VOLT[:LEV]:LIM:NEG? <value> Long Form: [SOURce:]VOLTage[:LEVel]:LIMit:NEGative? <value> Description: Identifies the software limit value for negative output voltage specified by the user. VOLT:LIM:POS B.73 [SOURce:]VOLTage[:LEVel]:LIMit:POSitive COMMAND Syntax: Short Form: [SOUR:]VOLT[:LEV]:LIM:POS <value> Long Form: [SOURce:]VOLTage[:LEVel]:LIMit:POSitive <value> where <value>...

  • Page 164: Age [:Lev El ]:Prot Ect [:Both]? Query

    VOLT:PROT[:BOTH]? B.78 [SOURce:]VOLTage[:LEVel]:PROTect[:BOTH]? QUERY Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT[:BOTH]? Long Form: [SOURce:]VOLTage[:LEVel]:PROTect[:BOTH]? Returns <exp_value>,<exp_value> Description: Identifies the protection limits for voltage (positive, negative); maximum is 1% greater than rated out- put voltage. VOLT:PROT:MODE B.79 [SOURce:]VOLTage[:LEVel]:PROTect:MODE COMMAND Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT:MODE (EXT | FIX | LESS |) Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:MODE (EXTernal | FIXed | LESSer |) Description:Determines how voltage protection limits are controlled.

  • Page 165: Age [:Lev El ]:Prot Ect :Lim It :Pos Itive Command

    B.85 [SOURce:]VOLTage[:LEVel]:PROTect:LIMit:BOTH COMMAND VOLT:PROT:LIM[:BOTH] Syntax: Short Form: [SOUR:]VOLT[:LEV]:PROT:LIMit[:BOTH] <value> Long Form: [SOURce:]VOLTage[:LEVel]:PROTect:LIM[:BOTH <value> where <value> is bewteen minimum (box) value (Figure 1-2) and 1% above rated (nominal) output voltage. Description: Establishes the maximum value possible for both the positive and negative protection limits for volt- age.

  • Page 166: Age [:Lev El ]:Trig Gered [:Amp Litude ] Command

    VOLT:TRIG B.91 [SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPlitude] COMMAND Syntax: Short Form: [SOUR:]VOLT[:LEV]:TRIG[:AMP] <exp_value> Long Form: [SOURce:]VOLTage[:LEVel]:TRIGgered[:AMPlitude] <exp_value> <exp_value> = digits with decimal point and Exponent, e.g., 2.71E1 for 27.1 Description: Programs voltage value to be transferred to output by *TRG command. Actual output voltage will depend on load conditions.

  • Page 167: Status:preset Command

    STAT:PRES B.97 STATus:PRESet COMMAND Syntax: Short Form: STAT:PRES Long Form: STATus:PRESet Description: Disables reporting of all status events. This command sets all bits of the Operation Condition (Table B-3) and Questionable Condition Registers to 0, preventing all status events from being reported. (See example, Figure B-4.) STAT:QUES? B.98 STATus:QUEStionable[:EVENt]? QUERY...

  • Page 168: System:communication:gpib:address? Query

    SYST:COMM:GPIB:ADDR? B.103 QUERY SYSTem:COMMunication:GPIB:ADDRess? Syntax: Short Form: SYST:COMM:GPIB:ADDR? Long Form: SYSTem:COMMunication:GPIB:ADDRess? Return Value: <int_value> 0 to 30 Description: Identifies selected power supply GPIB address. SYST:ERR? B.104 SYSTem:ERRor? QUERY Syntax: Short Form: SYST:ERR? Long Form: SYSTem:ERRor? Return Value: <int_value,string> Description: Posts error messages to the output queue. Returns the next error number followed by its corre- sponding error message string from the instrument error queue.

  • Page 169: System:password:state? Query

    SYST:PASS:STAT? B.112 SYSTem:PASSword:STATe? QUERY Syntax: Short Form: SYST:PASS:STAT? Long Form: SYSTem:PASSword:STATe? Return Value: <int_value> 0 or 1 Description: Returns a 1 if the password state is enabled or a 0 if it is disabled. NOTES: 1. The power supply is assumed to be operating in constant voltage (CV) mode. 2 Examples below are intended only to illustrate command functions.

  • Page 170: System:remote? 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-5. *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 171: System:version? Query

    SYST:VERS? B.118 SYSTem:VERSion? QUERY Syntax: Short Form: SYST:VERS? Long Form: SYSTem:VERSion? Return Value: <int_value>.<int_value> (YYYY.V) Description: Identifies SCPI Version implemented. Returns SCPI Version number: YYYY = year, V = Revision number for specified year. (See example, Figure B-6.) SYST:VERS? Unit returns 1997 SYST:SET? Unit returns DC0,LF0,RL0,OUT0 SYST:PASS:NEW DEFAULT,OKAY...
  • Page 172 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, 2yy04,\"CURRENT FAULT" connected to the BITBUS. The last two digits of the error 2yy05,"POWER LOSS"...
  • Page 173 . 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. 11352 U.S.A. $ TEL (718) 461-7000 $ FAX (718) 767-1102 http://www.kepcopower.com $ email: hq@kepcopower.com ©2005, KEPCO, INC...
  • Page 174 +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.
  • Page 175 You must register your product to comply with the terms of the warranty. Either fill out the form below and mail or fax to Kepco, or for rapid on-line registration go to: http://www.kepcopower.com/warranty.htm PRODUCT PURCHASED: REGISTER TO: Model Number)______________________________________ Registered by:________________________________________...
  • Page 176 FOLD HERE Please place stamp here KEPCO, INC. 131-38 SANFORD AVE. FLUSHING, NY 11355 USA CUT HERE...

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