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KEPCO BOP 5-20DL Operator's Manual

Bipolar operational power supply
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OPERATOR'S MANUAL
BIPOLAR OPERATIONAL POWER SUPPLY
KEPCO INC.
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.
©2015, KEPCO, INC
P/N 243-1367
KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL (718) 461-7000  FAX (718) 767-1102
BOP 5-20DL
100W, 200W AND 400W
MODEL
BOP 5-20DL

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 5-20DL

  • Page 1: Power Supply

    Data subject to change without notice. KEPCO ® ©2015, KEPCO, INC P/N 243-1367 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: Table Of Contents

    Local Control of Current Limiting......................3-6 3.3.3 Current Mode Operation with Voltage Limiting..................3-6 3.3.4 Local Control of Voltage Limiting......................3-8 Remote Control of Voltage Channel ......................3-9 3.4.1 Remote Voltage Control Using Resistance (Potentiometer) ..............3-9 BOP 5-20DL 020498...
  • Page 4 -OFF Zero (A1A1R13) and E -OFF Zero (A1A1R16) ..........4-4 4.2.6 Voltage Channel Zero Adjustment (A1R81) ................... 4-4 4.2.7 Current Channel Zero Adjustment (A1R83).................... 4-5 4.2.8 Calibration of I Full Scale Output Current (A3R316) and Front Panel Ammeter (A7AR3B)....4-5 BOP 5-20DL 081915...
  • Page 5 Greater Precision and Stability of Two or More BOP Power Supplies ............. 3-26 3-28 Indicator Light and Flag Logic........................3-27 3-29 Simplified Schematic Diagram, BOP 5-20DL....................3-29 Location of Internal Calibration Controls ..................... 4-2 Cover Removal and Internal Component Locations, BOP 5-20DL ............. 4-6 BOP 5-20DL 081915...
  • Page 6 Accessories - Not Supplied ........................1-13 1-11 Safety Symbols ............................1-13 BOP Front Panel Terminations and Controls ..................... 2-1 BOP Rear Panel Terminations and Controls ....................2-2 Chassis Slide Mounting Holes ........................2-6 Internal Calibration Controls ........................4-1 BOP 5-20DL 081915...
  • Page 8 FIGURE 1-1. BOP 5-20DL POWER SUPPLY (v Blank)/vi BOP 5-20DL 081915...

  • Page 9: Section 1 - Introduction

    SECTION 1 - INTRODUCTION SCOPE OF MANUAL. This manual contains instructions for the installation and operation of the BOP 5-20DL 100 Watt Bipolar Operational Power Supply manufactured by Kepco, Inc., Flushing, New York, U.S.A. The L suffix indicates that the unit is optimized to drive large inductive loads in a stable manner.

  • Page 10: General Specifications

    ±5% by A3R316 (see PAR. 4.2.8). Voltage in +0.55V/V ±2% for positive limit Voltage limit -0.55V/V ±2% for negative limit Current in +2.2A/V ±2% for positive limit Current limit -2.2A/V ±2% for negative limit BOP 5-20DL 081915...
  • Page 11 Adjustable (see PAR. 4.2.5). Off Level Dynamic Specifications See Tables 1-5 and 1-8 Calibration See Table 4-1 Using reduced range 10-turn trimpots for some signals Kelvin Connection max. 0.25V/ wire Without protection or limiting (remote error sensing) circuit. BOP 5-20DL 081915...

  • Page 12: Output Range And Output Impedance

    CLOSED LOOP GAIN OUTPUT IMPEDANCE VOLTAGE MODE CURRENT MODE VOLTAGE CURRENT MODEL CHANNEL CHANNEL SERIES SERIES SHUNT SHUNT G V (V/V) G I (A/V) 100 WATTS     BOP 5-20DL 0 to ±5V 0 to ±20A BOP 5-20DL 081915...

  • Page 13: Static Specifications

    Closed Loop Gain, Voltage Mode, (see Table 1-1). Closed Loop Gain, Current Mode, (see Table 1-1). E Total Output Voltage Change. E Change in the Voltage Reference. E Change in Offset Voltage. I Change in Offset Current. External Feedback Resistor. External Input Resistor. BOP 5-20DL 081915...

  • Page 14: Dynamic Specifications

    The BOP can be locally (front panel) adjusted, or remotely programmed, from (–)100% to (+)100% of its specified d-c voltage and current range. The Class A bipolar output stage permits operation as either a source or a sink. (See Figure 1-2). FIGURE 1-2. BOP OUTPUT CHARACTERISTIC BOP 5-20DL 081915...

  • Page 15: Rear Programming Features

    (1) PC-15 connector, which is prewired with jumpers for local (front-panel) operation. Spare con- nectors may be purchased from Kepco under the model number PC-12 for the unwired connec- tor and PC-15 for a connector wired for local operation. The functions of the Rear Programming Connector terminals are listed below in Table 1-6.

  • Page 16: Output On-Off Port

    0A ±0.001A by I - OFFZERO potentiometer in current mode. NOTE: Contact Kepco if digital control of the model BOP 5-20DL power supply is desired. Before installing any BIT card for digital control, the output ON/OFF feature must be disabled.

  • Page 17: Output On-Off Port A2J211, Pin Assignments

    ON level: +0.4V max. for 1.6mA current. The flag’s fall time for either voltage mode with no load, or current mode with short circuit, is within 150S max (between 90% point of controlling signal and 10% point of of on-off flag). Not Used Not Used BOP 5-20DL 081915...

  • Page 18: Load Reactance

    When driving an inductive load, if the system becomes unstable at the crossover between volt- age limit mode and current mode, the BOP 5-20DL can be further optimized by reducing the current loop bandwidth. This can be accomplished by connecting a ceramic capacitor across pins 16 and 18 of the Rear Programming Connector (see Figure 3-1 and Table 1-6).

  • Page 19: Voltage Control Channel

    BOP model. Similarly, the quantities E Zero and I Zero are not really zero, but are approximately 0.5% of the rated E max. and I max. values. (See Figure 1-4.) FIGURE 1-4. BOUNDARIES AND LIMITS 1-11 BOP 5-20DL 081915...

  • Page 20: Mode Lights

    Mounting Flanges - for installation of the BOP into a standard (19 inch) equipment rack Right 128-0927 Left. 128-0926 ON-OFF PORT mating connector, Modular telephone plug, RJ12, 6- contacts. Allows 142-0536 access to Remote Output On-Off control and flag signals (TE Connectivity, 5-555176-3) 1-12 BOP 5-20DL 081915...

  • Page 21: Accessories

    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. Table 1-11 lists symbols used on the power supply or in this manual where applicable.
  • Page 23 ON−OFF PORT OUTPUT ON−OFF FIGURE 1-5. MECHANICAL OUTLINE DRAWING, BOP 5-20DL -14/(-15 081915 1-15/(1-16 Blank)

  • Page 25: Section 2 - Installation

    Rear Panel: Refer to Figure 2-2 and Table 2-2 for an explanation of terminations. Table 2-1 for function. FIGURE 2-1. BOP 5-20DL, TERMINATIONS AND CONTROLS, FRONT PANEL TABLE 2-1. BOP FRONT PANEL TERMINATIONS AND CONTROLS FIG. NAME OF TERMINATION FUNCTION INDEX NO.

  • Page 26: Bop Rear Panel Terminations And Controls

    Rear Programming Connector. J211 OUTPUT ON-OFF Port. See PAR. 1.4.3 and Table 1-7 for details REAR TERMINALS Rear barrier strip with output, sensing and ground terminals. (TB201) P201 A-C power input jack. accepts 3-wire line cord (supplied). BOP 5-20DL 081915...

  • Page 27: A-C Input Requirements

    Periodic cleaning of the interior of the power supply is rec- ommended. If the BOP is rack-mounted or installed into confined spaces, care must be taken that the ambient temperature (the temperature immediately surrounding the power supply) does not rise above 55°C (~131°F). BOP 5-20DL 081915...

  • Page 28: Preliminary Checkout

    (3, Figure 2-2) to turn the output ON (refer to Table 1-7 for detailed signal require- ments). At the front panel, E MODE (23, Figure 2-1) and REMOTE OUTPUT ON-OFF (5) indica- tors will be on. BOP 5-20DL 081915...
  • Page 29 OUTPUT ON-OFF port. Verify the front panel CURRENT (7) meter shows zero Amperes and the REMOTE OUTPUT ON-OFF indicator (5) goes off. 14. Turn a-c circuit breaker/POWER switch (1) to OFF. Remove the short circuit from the out- put terminals. This concludes the preliminary check-out of the BOP. BOP 5-20DL 081915...

  • Page 30: Installation Of Full-Rack Bop Models

    Drill the “E” hole into both left and right chassis sections of slide if required. Mount the chassis section of the slide to the left and right side of the BOP as shown in Fig- ure 2-4. Use the same 10-32 x 1/2” mounting screws removed in step 1. BOP 5-20DL 081915...

  • Page 31: Load Connection

    The load wire size for the 2-wire connection shown should be rated for the nominal output cur- rent of the BOP (20A for the BOP 5-20DL) and tied together to keep parasitic inductance low and to reduce possible “pick-up” from stray magnetic fields. The basic 2-wire connection is use- ful where the voltage drop in the load wires is small or of minor consequence, as for example, operation in constant current mode.

  • Page 32: Load Connection, Remote Sensing

    A twisted or shielded pair of wires (No. 22 AWG minimum) are connected from the BOP sensing terminals to the load. For the BOP 5-20DL this remote error sensing technique will compensate for load wire voltage drops up to 0.25 volts per wire.

  • Page 33: Load Connection Using Local Sensing At Rear Panel

    FIGURE 2-5. LOAD CONNECTION USING LOCAL SENSING AT REAR PANEL FIGURE 2-6. LOAD CONNECTION USING LOCAL SENSING AT FRONT PANEL BOP 5-20DL 081915...

  • Page 34: Load Connection Using Remote Sensing At Rear Panel

    FIGURE 2-7. LOAD CONNECTION USING REMOTE SENSING AT REAR PANEL FIGURE 2-8. LOAD CONNECTION USING REMOTE SENSING AT FRONT PANEL 2-10 BOP 5-20DL 081915...

  • Page 35: Section 3 - Operation

    GROUND terminal to a reliable a-c source ground point. The COMMON output terminal of the BOP can be either grounded or floating, depending on the application. Additional precautions must be taken to make any user access to the output terminals impossible. BOP 5-20DL 081915...

  • Page 36: Rear Programming Connector Terminals

    23, 25, 27, 29, 31 or 33 on the Rear Programming Connector NOTE: BOP’S have front and rear output terminals. Only the front terminals are shown on all subsequent simplified diagrams. FIGURE 3-1. REAR PROGRAMMING CONNECTOR TERMINALS BOP 5-20DL 081915...

  • Page 37: External Programming Resistors

    There is no overvoltage protection. This stage is protected against short-circuit by the intrin- sic protection of the op-amp generating this signal. This signal is used by the BIT card if it is installed. BOP 5-20DL 081915...

  • Page 38: External Current Monitor

    S terminals to load. PREAMP "A" VOLTAGE CONTROL ZERO DRIVER POWER Eo COMP LOAD STAGE VOLTAGE PROGRAMMING INPUT Eo ZERO BOP VOLTAGE SIGNAL CONTROL CHANNEL GROUND COMMON 3043876 FIGURE 3-2. BOP VOLTAGE CONTROL CHANNEL (LOCAL CONTROL, LOCAL SENSING) BOP 5-20DL 081915...
  • Page 39 NOTE: If the output current exceeds the preadjusted value at any time, the Voltage Mode indi- cator (26) will go out and the CURRENT LIMITS indicator (17) will go on. After the cause of the overcurrent is eliminated, the indicators will return to their initial status. BOP 5-20DL 081915...

  • Page 40: Local Control Of Current Limiting

    CURRENT CONTROL (13) over the full output range. The control potential (zero to ±10V) is applied via Preamp “B,” operating with unity gain, to the l Comp. Amp which drives the Power Stage with a fixed gain as listed in Table 1-2. BOP 5-20DL 081915...

  • Page 41: Bop Current Control Channel (Local Control, Local Sensing)

    NOTE: If the output voltage exceeds the preadjusted value at any time the Current Mode indi- cator (15) will go out and the VOLTAGE LIMITS indicator will go on. After the cause of the overvoltage is eliminated, the indicators will return to their initial status. BOP 5-20DL 081915...

  • Page 42: Local Control Of Voltage Limiting

    LOAD STAGE 57.6K (-)Eo LIMIT- (-)Eo LIMIT- AMP (EXT) AMP (INT) (+)Eo LIMIT (-)Eo LIMIT- BOP Eo CONTROL COMP AMP LIMIT CHANNEL SIGNAL COMMON GROUND 3043877 FIGURE 3-5. BOP (±) VOLTAGE LIMITING CIRCUIT (LOCAL CONTROL, LOCAL SENSING) BOP 5-20DL 081915...

  • Page 43: Remote Control Of Voltage Channel

    CONTROL VOLTAGE SENSING LINK ZERO CONTROL DRIVER POWER LOAD Eo COMP STAGE VOLTAGE PROGRAMMING INPUT Eo ZERO REMOVE SENSING LINK BOP VOLTAGE CONTROL CHANNEL SIGNAL COMMON GROUND 3043881 FIGURE 3-6. REMOTE POTENTIOMETER CONTROL OF D-C OUTPUT VOLTAGE BOP 5-20DL 081915...

  • Page 44: Remote Voltage Control Using Resistance (Decade Box)

    DRIVER POLARITY POWER LOAD SELECTOR Eo COMP STAGE (EXT.) VOLTAGE PROGRAMMING INPUT Eo ZERO REMOVE SENSING LINK BOP VOLTAGE CONTROL CHANNEL SIGNAL COMMON GROUND 3043882 FIGURE 3-7. REMOTE D-C OUTPUT VOLTAGE CONTROL USING TWO-TERMINAL RESISTANCE (DECADE) 3-10 BOP 5-20DL 081915...

  • Page 45: Remote Voltage Control Using D-C Signal Voltage

    Voltage Programming Input terminals. An interesting example of how this can be imple- mented is the use of a Kepco SN Digital Programmer to convert digital input to the analog ±10V d-c signal. The digital input to the SN programmer can be provided by a computer, or manually by means of a keyboard.

  • Page 46: Using The Bop As A Voltage Amplifier

    Figure 3-10. All input signals are shown 180° out of phase with their corresponding out- put waveshapes. The latter can be readily produced in phase (i.e. with the output wave taking the same direction as the input signal) by addressing the non-inverting input of Preamp “A” 3-12 BOP 5-20DL 081915...

  • Page 47: Graphs Of Possible Input/Output Waveshapes

    LOAD Eo COMP STAGE +10V VOLTAGE Eo ZERO PROGRAMMING -10V INPUT REMOVE SENSING LINK BOP VOLTAGE CONTROL CHANNEL SIGNAL COMMON GROUND 3043885 FIGURE 3-11. BASIC PROGRAMMING CIRCUIT FOR USE OF BOP AS BIPOLAR AMPLIFIER (VOLTAGE MODE) 3-13 BOP 5-20DL 081915...

  • Page 48: Remote Control Of Current Limiting

    NOTE: The front panel ± I LIMIT controls serve as a back-up when external current limit pro- gramming is used. These controls should be set to a value slightly larger than the external current limits that are to be programmed. 3-14 BOP 5-20DL 081915...

  • Page 49: Remote Control Of Current Control Channel

    Any comments specifically applicable to current channel programming are noted on the diagrams. NOTE: Adjust the zero output current point by means of the built-in ZERO control of Preamp “B” or that of the I Comp. Amp. 3-15 BOP 5-20DL 081915...

  • Page 50: Remote Current Control Using Resistance (Potentiometer)

    ZERO DRIVER POLARITY POWER I o COMP SELECTOR CURRENT LOAD STAGE (EXT.) PROGRAMMING INPUT I o ZERO BOP CURRENT SIGNAL CONTROL CHANNEL GROUND 3043700 COMMON FIGURE 3-16. REMOTE D-C OUTPUT CURRENT CONTROL USING TWO-TERMINAL RESISTANCE (DECADE) 3-16 BOP 5-20DL 081915...

  • Page 51: Remote Current Control Using D-C Signal Voltage

    I o COMP LOAD ±1V STAGE CURRENT PROGRAMMING INPUT I o ZERO BOP CURRENT SIGNAL GROUND CONTROL CHANNEL 3043702 COMMON FIGURE 3-18. BOP OUTPUT CURRENT CONTROL WITH NON-INVERTING CONFIGURATION AND HIGH IMPEDANCE (±)1 VOLT SIGNAL SOURCE 3-17 BOP 5-20DL 081915...

  • Page 52: Using The Bop As A Current Amplifier

    I o COMP LOAD STAGE 0 TO ±1 V CURRENT I o ZERO PROGRAMMING 0.1mA INPUT SIGNAL BOP CURRENT GROUND CONTROL CHANNEL COMMON 3043704 FIGURE 3-20. PROGRAMMING CIRCUIT FOR DRIVING OUTPUT CURRENT WITH BIPOLAR SIGNAL LESS THAN ±10V 3-18 BOP 5-20DL 081915...

  • Page 53: Remote Control Of Voltage Limiting

    STAGE 57.6K (-)Eo LIMIT- (-)Eo LIMIT- AMP (EXT) AMP (INT) REMOVE SENSING LINK (+)Eo LIMIT (-)Eo LIMIT- CONTROL COMP AMP BOP Eo LIMIT CHANNEL COMMON 3043888 SIGNAL GROUND FIGURE 3-22. SYMMETRICAL REMOTE CONTROL OF VOLTAGE LIMIT 3-19 BOP 5-20DL 081915...

  • Page 54: Series And Parallel Connection Of Bop Power Supplies

    Since this method presents the least problems for either series or parallel connections and since it is readily implemented with BOP power supplies, it is the recommended method for this kind of operation and is described below. 3-20 BOP 5-20DL 081915...

  • Page 55: Series Connection, Master/Slave Operation

    Two or more BOP power supplies can be connected in series to increase output voltage. One series-connection limitation is the isolation limit of the BOP itself (500V); contact Kepco if more than three units is series are required. Figure 3-24 shows a master/slave connection of two BOP power supplies.

  • Page 56: Circuit Breaker Control Circuit

    The coupling resistor (R ) should be either a wirewound or a metal film component with a low temperature coefficient. For BOP 5-20DL this value is 2.49K (either 1/4 or 1/2 Watt). This value of R will be able to drive the BOP Slave unit to its (±) maximum output voltage as the BOP Master is controlled through its range.

  • Page 57: Parallel Connection, Master/Slave Operation

    PARALLEL CONNECTION, MASTER/SLAVE OPERATION BOP power supplies can be connected in parallel to increase output current. One parallel-con- nection limitation is the load-wire size required for larger output current. Contact Kepco if more than three units in parallel are required.
  • Page 58 The system as shown in the set-up diagram, Figure 3-26 or 3-27, operates in the Volt- age Mode, since the MASTER MODE switch is set to VOLTAGE. For operation in the current mode, set the MASTER MODE switch to CURRENT. 3-24 BOP 5-20DL 081915...

  • Page 59: Parallel Connection (Master/Slave) Of Two Bop Power Supplies With Remote Error Sensing At The Common Load

    I o COMP STAGE CURRENT R S COM PROGRAMMING INPUT I o ZERO BOP CURRENT CONTROL CHANNEL SLAVE 3043891 COMMON FIGURE 3-26. PARALLEL CONNECTION (MASTER/SLAVE) OF TWO BOP POWER SUPPLIES WITH REMOTE ERROR SENSING AT THE COMMON LOAD 3-25 BOP 5-20DL 081915...

  • Page 60: Alternative Parallel Connection (Master/Slave) For Greater Precision And Stability Of Two Or More Bop Power Supplies

    23, 25, 27, 29, 31, and 33 of the rear program- ming connector. SLAVE 2 3043892 COMMON FIGURE 3-27. ALTERNATIVE PARALLEL CONNECTION (MASTER/SLAVE) FOR GREATER PRECISION AND STABILITY OF TWO OR MORE BOP POWER SUPPLIES 3-26 BOP 5-20DL 081915...

  • Page 61: Indicator And Flag Logic Circuit

    INSTALLED) "1" IC15 "1" "0" REMOTE/ LOCAL J204 FLAG (NOT USED) REMOTE/LOCAL (NOT USED) "1" "1" "1" MODE S103 TO I o COMP. COMMON MODE SWITCH 3043894 (IC12) "0" FIGURE 3-28. INDICATOR LIGHT AND FLAG LOGIC 3-27 BOP 5-20DL 081915...

  • Page 62: Digital Control Of Bop Power Supplies

    The logic status signals shown in Figure 3-28 are valid for the BOP operating in voltage mode MODE) and local mode (not driven by the GPlB interface). The BOP 5-20DL uses the front panel REMOTE ON-OFF indicator shows the output on-off status as determined by signals applied to the OUTPUT ON-OFF Port.

  • Page 63: Simplified Schematic Diagram, Bop 5-20Dl

       FIGURE 3-29. SIMPLIFIED SCHEMATIC DIAGRAM, BOP 5-20DL -28/(-29 081915 3-29/(3-30 Blank)

  • Page 65: Section 4 - Internal Adjustments And Calibration

    NOTE: • Because the voltage measured will be used as reference for calibration, the DVM used must be accurately calibrated prior to calibrating the BOP Power Supply. • Proper cooling of the external precision shunt resistor ensures the accuracy of the calibration. BOP 5-20DL 081915...

  • Page 66: Adjustment Of (±) 10 Volt Calibration Controls (A1R31, A1R32)

    5. Connect a precision digital voltmeter (DVM) to terminal 22 (–10V) of the Rear Programming Connector referenced to Common (terminal 23, 25, 27, 29, 31 or 33) for –10V adjustment. 6. Adjust –10V CAL control, A1R32 (see Figure 4-2) to –10V ±0.1mV as read on DVM. BOP 5-20DL 081915...

  • Page 67: Uncommitted Amplifier "A" Zero Adjustment (A1R41)

    (DVM) to terminal 10 of the Rear Programming Connector referenced to Common (terminal 23, 25, 27, 29, 31 or 33). 2. Turn the BOP on and locate the Ammeter Zero control (A1R50, Figure 4-2). 3. Adjust control to 0V ±0.1mV as read on DVM. BOP 5-20DL 081915...

  • Page 68: Adjustment Of I O -Off Zero (A1A1R13) And E O -Off Zero (A1A1R16)

    4. Adjust I -OFF ZERO (A1A1R13) potentiometer (see Figure 4-2) for 0A ±(0.01% of I nom) as read on the DVM connected to the shunt. (For BOP 5-20DL I nom is 20A and adjustment tolerance is ±2mA.) 5. Turn off the BOP and remove the shunt resistor from the output. Connect the DVM to the output sensing terminal of the BOP (OUT S and COM S).

  • Page 69: Current Channel Zero Adjustment (A1R83)

    8. Adjust A3R316 (see Figure 4-2 for location) until current reading displayed by ammeter or by the shunt’s DVM exactly matches the BOP rated output current with 0.005% tolerance (-20A ±1mA for BOP 5-20DL). The current reading will show negative polarity due to the default inverting configuration of the unit.

  • Page 70: Cover Removal And Internal Component Locations, Bop 5-20Dl

    FIGURE 4-2. COVER REMOVAL AND INTERNAL COMPONENT LOCATIONS, BOP 5-20DL BOP 5-20DL 081915...

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