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BOP-1K-GL 111315

3-9

3.3.6

DETERMINING HOW THE UNIT RESPONDS WHEN OUTPUT IS OFF (LOAD TYPE)

The BOP supports three Load Type selections (see Table 3-3) which determine how the power
supply responds when the output is off: ACTIVE, RESISTIVE and BATTERY. These selections
are designed to provide proper operation with different load types. It is important to note that the
Load Type selection does not affect the settings of the power supply for ON state; it only affects
the main internal reference level and the protection levels during the OFF state. Load type is
selected by performing a Reset Power-up (see PAR. 3.3.2.1) or by using the digital
OUTP:MODE command (see PAR. B.17).

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 voltage and current measurements at the
output must read 0V, 0A before removing or installing connections
between BOP and load.

ACTIVE.

Active mode (default setting) is necessary for the power supply to function properly

and safely with inductive loads and constant-current-type active electronic loads. Active mode
can also be used with resistive loads. Table 3-3 indicates how the power supply responds to a
command to go from Output ON to OFF. When the output is disabled, the unit is set to voltage
mode, voltage is set to zero and both current protect and voltage limit are set to maximum.
When the unit is enabled, the pre-existing settings for voltage, current protect and voltage limit
are restored.

For both inductive loads and constant-current-type active electronic
loads when the BOP output is set to OFF, a path is provided for absorb-
ing either the energy accumulated in the reactance of the load during
the ON state, or energy delivered by an electronic load. This prevents
damage to the load and power supply as well as providing safety for
the user. However, In addition to the built-in safety features, constant-
current-type active electronic loads must be adjusted to zero and volt-
age and current measurements at the output must read 0V, minimum
current, before handling the power supply-to-load connections.

RESISTIVE.

This mode, as the name suggests, is useful for resistive loads. Table 3-3 indicates

how the power supply responds to a command to go from Output ON to OFF.

WARNING

WARNING

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Содержание BOP-GL 1KW

Страница 1: ...MWARE VERSION NOTE 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 usi...

Страница 2: ......

Страница 3: ...Importer s Name and Address Type of Equipment Component Power Supply Model No PRODUCT MODEL NUMBER Year of Manufacture I the undersigned declare that the product specified above when used in conjunct...

Страница 4: ...d within a suitably wired equipment rack utilizing a three wire grounded mains con nection See wiring section of this manual for complete electrical wiring instructions EN61010 1 Cl 6 5 4 and Cl 6 10...

Страница 5: ...nection on the product s rear panel To reconfigure the product input for other nominal mains voltages as listed herein the product must be modified by a trained service technician The PROTECTIVE EARTH...

Страница 6: ...ardous do not lick or swallow Wash skin and clothes immediately and thor oughly upon exposure CAUTION If this power supply is used in OEM equipment the OEM equipment manufacturer is responsible for at...

Страница 7: ...nimum current before han dling the power supply to load connections 3 10 WARNING Accessing the BOP after the output is disabled in BATTERY mode is haz ardous because 1 high current arcing is possible...

Страница 8: ...BOP can be damaged by the protection limit output current flowing inside the BOP along the programming signal return path 2 14 CAUTION Do not connect both the load and the programming device return c...

Страница 9: ...tage 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 max...

Страница 10: ......

Страница 11: ...g Analog Control 2 9 2 3 2 Preliminary Operational Check using Digital Control 2 10 2 4 Installation 2 11 2 4 1 Rack Mounting 2 11 2 4 2 Slide Installation 2 11 2 5 Wiring Instructions 2 12 2 5 1 Safe...

Страница 12: ...ote Mode Programming 3 16 3 4 1 Controlling the Output Using the BOP as a Power Amplifier 3 16 3 4 1 1 Fixed Gain using External Reference Control 3 17 3 4 1 2 Variable Gain Using External Reference L...

Страница 13: ...7 3 3 LIST Subsystem 3 37 3 7 3 3 1 Required LIST Commands 3 38 3 7 3 3 2 Other Required Commands 3 39 3 7 3 3 3 Other Useful Commands 3 39 3 7 3 3 4 Optional Commands 3 39 3 7 3 4 MEASure Subsystem...

Страница 14: ...A 14 SRE Service Request Enable Query A 5 A 15 STB Status Byte Register Query A 5 A 16 TRG Trigger Command A 5 A 17 TST Self Test Query A 6 A 18 WAI Wait To Continue Command A 6 APPENDIX B SCPI COMMA...

Страница 15: ...3 B 46 SOURce FUNCtion MODE Query B 13 B 47 SOURce FUNCtion MODE TRIGger Command B 13 B 48 SOURce FUNCtion MODE TRIGger Query B 13 B 49 SOURce LIST CLEar Command B 13 B 50 SOURce LIST COUNt Command B...

Страница 16: ...06 SOURce VOLTage LEVel PROTect LIMit NeGative Command B 30 B 107 SOURce VOLTage LEVel PROTect LIMit NeGative Query B 30 B 108 SOURce VOLTage LEVel PROTect LIMit POSitive Command B 31 B 109 SOURce VOL...

Страница 17: ...Command B 36 B 140 SYSTem PASSword STATe Query B 36 B 141 SYSTem REMote Command B 36 B 142 SYSTem REMote Query B 36 B 143 SYSTem SECurity IMMediate Command B 37 B 144 SYSTem SET Command B 37 B 145 SY...

Страница 18: ...Sample Waveform 3 26 3 8 RS 232 Implementation 3 33 3 9 Tree Diagram of SCPI Commands Used with BOP Power Supply 3 41 3 10 Message Structure 3 45 3 11 Status Reporting Structure 3 48 3 12 Typical Exa...

Страница 19: ...3 3 Power Supply Behavior when Output is set to OFF 3 10 3 4 Sine Triangle and Ramp Waveform Frequency vs Points 3 25 3 5 Square Waveform Frequency vs Points 3 26 3 6 Waveform Segment Details 3 27 3...

Страница 20: ...x BOP 1K 111315 FIGURE 1 1 HIGH POWER BOP GL SERIES POWER SUPPLY...

Страница 21: ...sends it back into the line to maintain low dissipation These BOP power supplies can be controlled remotely by an analog 10V input for the main channel voltage or current and by a 1 to 10V input for t...

Страница 22: ...F EN61000 4 6 EMC emissions Conducted EN61000 3 2 harmonics EN61000 3 3 fluctuation flicker Conducted EN55011 CISPR11 0 15 to 30 MHz Radiated EN55011 CISPR11 30 to 1000 MHz Leakage current 3 5 mA 230V...

Страница 23: ...ent and Voltage Limit in Current Mode Current Limit 12 bits 0 1 Current 14 bits 0 05 Voltage Limit 12 bits 0 1 source 0 2 sink Digital Readback resolution accuracy Voltage 16 bits 0 05 main or limit c...

Страница 24: ...cycling power off then on Input Stage Protection PFC Internal overvoltage undervoltage overcurrent heat sink overtemperature fan inoperative Input circuit breaker overcurrent Trips circuit breaker to...

Страница 25: ...is input can be disabled OFF or set to BOP MG functionality STANDBY see Table 2 5 STANDBY External Trigger Shutdown Isolated input Logic 0 or short circuit causes the output to go to STANDBY off disab...

Страница 26: ...iod for sine and triangular waveforms and time interval for DC levels Waveforms that exceed the maximum number of points are not executed and an error message is generated Types of Basic waveforms Sin...

Страница 27: ...gh resolution For 126 different dwell times 3933 For 126 different dwell times 2950 Dwell time range 93usec to 34msec Dwell time resolution increment 0 751usec Skip feature a number of steps can be sk...

Страница 28: ...oltage millivolts a c 35 Sine millivolts d c 1 Triangle Square Ramp Level Current milliamperes a c 35 Sine millivolts d c 1 Triangle Square Ramp Level Protection Limit Channel Current bipolar Amperes...

Страница 29: ...ction Limit Channel maximum value Internal EOMIN or IOMIN to 1 01 EONOM or IONOM internal Software limit to setting of protection limit channel Voltage Volts for Current mode Current Amperes for Volta...

Страница 30: ...port 15 pin D female See Figure 2 1 Table 2 12 PAR SER CTRL IN port 8 pin mini DIN connector See Figure 2 1 Table 2 9 PAR SER CTRL OUT port 4 pin mini DIN connector See Figure 2 1 Table 2 8 PAR SER P...

Страница 31: ...RAWING SHEET 1 OF 2 20 000 508 00 21 439 544 54 22 800 579 11 21 564 547 73 22 000 558 79 23 863 606 12 18 235 463 16 18 985 482 21 1 470 37 34 1 738 44 15 5 218 132 54 2 215 56 27 OBROUND 0 25x0 453...

Страница 32: ...1 12 BOP 1K GL 111315 FIGURE 1 2 BOP GL POWER SUPPLY OUTLINE DRAWING SHEET 2 OF 2 SLIDES TRAVEL DISTANCE 23 000 584 2 22 000 558 79 SEE NOTE 6 REAR VIEW DETAIL A SEE DETAIL A...

Страница 33: ...sing digital entries and a calibrated DVM a precision d c reference voltage source and preci sion shunt resistor Previous calibration values are saved and can be restored if desired The original facto...

Страница 34: ...the proper limit levels at variable rate 5 to 100 milliseconds alternately sampling the positive and negative limits The external limit inputs are hardware protected against overvolt age Refer to PAR...

Страница 35: ...EQUIPMENT SUPPLIED ITEM FUNCTION PART NUMBER Source Power Entry mating connector Mates with source power entry connector 142 0381 Kepco IEC 320 PAR SER CONTROL IN mating connector Mates with PAR SER C...

Страница 36: ...1 16 BOP 1K GL 111315 FIGURE 1 3 BOP OUTPUT CHARACTERISTICS...

Страница 37: ...RJ45 Patch cord RJ 45 Patch cord two RS 232 adapters one with male pins to connect to DTE equipment and one with female pins to connect to a PC personal com puter two RS 232 Loop Back test Connectors...

Страница 38: ......

Страница 39: ...pping 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 s...

Страница 40: ...for A2A5J2 OUT 7 EXT PROTECT PORT connector A2A5J7 Provides means for controlling protection via external circuitry and provides status flags to external circuitry See Table 2 6 8 INPUT connector con...

Страница 41: ...ndalone 1 Slave 0 Establish whether the unit is standalone or designated as master or slave in a multiunit series or parallel configuration S2 2 Series 1 Parallel 0 S2 5 S2 4 S2 3 LSB Configure unit a...

Страница 42: ...log I O port enabled 1 or open voltage mode 0 or short current mode Setting S3 4 MSB through S3 1 LSB to 1 0001 to 15 1111 restores custom configuration previously saved in selected location 1 to 15 S...

Страница 43: ...e unit This signal shuts down unit functionality The unit remains powered but no output is available and the front panel POWER FAULTLIMIT LED will turn red Response is relatively fast 100 S max To res...

Страница 44: ...on TABLE 2 9 PARALLEL SERIAL CONTROL IN PORT PIN ASSIGNMENTS CONNECTOR PIN SIGNAL NAME FUNCTION PARALLEL SERIAL CONTROL IN PORT A2A5J3 1 SGND Local signal ground 2 No connection 3 S_IN_PARALLEL Input...

Страница 45: ...llel or series combination are connected in series 3 SD_RETURN Completes return connection for the protection circuit which receives energy from the master unit 4 No connection 5 No connection 6 No co...

Страница 46: ...l 0V to 10V sets the negative voltage limit between zero and EOmax 10V corresponds to rated maximum voltage e g for BOP 36 28GL 10V sets negative voltage limit to 36V Open disabled See PAR 3 4 2 Open...

Страница 47: ...enabled and set to maximum NOTE The unit is shipped with load type set to Active for inductive loads If necessary refer to 3 3 6 for an explanation of load types and to PAR 3 3 2 1 to change the load...

Страница 48: ...er to PAR 3 8 for troubleshooting 5 Connect a digital voltmeter DVM resolution and accuracy of 0 01 or better to the OUT S and COM S terminals at the rear panel terminal block 6 Verify DVM voltage rea...

Страница 49: ...T Puts the unit in Voltage Mode VOLT MODE FIX Allows digital control of the output CURR PROT LIM xx xx is the nominal current rating of the unit VOLT yy yy is the nominal voltage rating of the unit OU...

Страница 50: ...ee Table 1 3 See Table 1 2 for source power specifica tions This power supply operates from single phase a c mains power or between two phases of 3 phase a c mains power over the specified voltage and...

Страница 51: ...erminal block link form a grounding network The grounding network is designed to reduce high frequency noise and ensure that the digital programming section is not adversely affected by the dynamic sw...

Страница 52: ...st then the BOP can be damaged by out put current flowing inside the BOP along the programming signal return path CAUTION The safety features incorporated into the BOP to handle energy from Active loa...

Страница 53: ...es can be configured for a Reset Power up or b Normal Power up Reset Power up PAR 3 3 2 1 is used to change the load type load type determines how the unit responds to the output OFF command see PAR 3...

Страница 54: ...2 16 BOP 1K GL 111315 FIGURE 2 4 LOAD CONNECTIONS LOCAL SENSING FIGURE 2 5 LOAD CONNECTIONS REMOTE SENSING GND NET OUT MON N C OUT S COM S COM MON GND...

Страница 55: ...r 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 an...

Страница 56: ...4 6 12 13 5 L H 2 9 5mA 1 0mA CM VM 1M 0 TO 10V 0 1 TWISTED 1M 0 TO 10V 0 1 TWISTED 4 15 3 DVM OUTPUT CURRENT MONITOR OUTPUT TERMINALS OUT OUT MON COMM S OUT S COMM COMM MON PRECISION SHUNT LOAD DVM O...

Страница 57: ...calibrating the multiple unit configuration is neither needed nor possible 2 8 1 MULTIPLE UNIT CONNECTIONS Before connecting the units in parallel or in series turn off all units and remove any previ...

Страница 58: ...2 20 BOP 1K GL 111315 FIGURE 2 7 PARALLEL CONFIGURATION LOCAL SENSING TYPICAL NOTE Consult factory for configurations requiring more than two units in parallel...

Страница 59: ...BOP 1K GL 111315 2 21 FIGURE 2 8 PARALLEL CONFIGURATION REMOTE SENSING TYPICAL NOTE Consult factory for configurations requiring more than two units in parallel...

Страница 60: ...FIGURE 2 9 SERIES CONFIGURATION LOCAL SENSING TYPICAL GND NET OUT MON N C OUT S COM S COM MON GND GND NET OUT MON N C OUT S COM S COM MON GND NOTE Consult factory for configurations requiring more tha...

Страница 61: ...IGURE 2 10 SERIES CONFIGURATION REMOTE SENSING TYPICAL GND NET OUT MON N C OUT S COM S COM MON GND GND NET OUT MON N C OUT S COM S COM MON GND NOTE Consult factory for configurations requiring more th...

Страница 62: ...TIONS 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...

Страница 63: ...tall the units in the rack or stack them one on top of the other then use the cables and terminations supplied in the applicable Interconnection Kit available as an accessory see Table 1 5 per Figures...

Страница 64: ...tput on off pin at the Analog I O port be disabled by send ing OUTP CONT OFF command to the master This allows OUTP ON and OUTP OFF commands to control the output digitally via the host computer The D...

Страница 65: ...switches accessible through the top cover see Table 2 2 for switch settings Verify that these power up settings are com patible with your load see Figure 2 2 and Table 2 2 for switch settings To chang...

Страница 66: ...command see PAR B 12 However it is recommended that the unit be tagged with all settings saved for power up to avoid unexpected behavior upon power up 3 3 POWER SUPPLY BASICS The following paragraphs...

Страница 67: ...standalone or part of a multi unit configuration and selects the GPIB address to be used see Table 2 2 for details TABLE 3 1 FRONT PANEL CONTROLS AND INDICATORS NUMBER FIGURE 3 1 CONTROL INDICATOR FUN...

Страница 68: ...eleased wait a few seconds before trying again The circuit breaker is trip free design if overload exists contacts cannot be held closed by actuator 7 The unit will begin beeping on and off at equal i...

Страница 69: ...by the voltage protect settings When the protect settings are exceeded the protection channel limits the output cur rent or voltage the POWER FAULT LIMIT LED lights orange LIMIT and the power supply...

Страница 70: ...Current Protect Max Voltage mode only Minimum positive setting for Current Protect and maximum maximum negative setting for Current Protect Values of Cur rent Protect between Current Protect Min and...

Страница 71: ...IM see PAR B 104 set both positive and negative voltage protection limits to the same value CURR PROT LIM POS see PAR B 41 and CURR PROT LIM NEG see PAR B 39 are used to program individual settings fo...

Страница 72: ...a 120 error is produced If analog control is enabled the output is clamped to the software limit for programmed values higher than the soft ware limit If main channel software limits are changed from...

Страница 73: ...ng is necessary for the power supply to function properly and safely with inductive loads and constant current type active electronic loads Active mode can also be used with resistive loads Table 3 3...

Страница 74: ...rated zero value with voltage protect and cur rent limit set to maximum In this way the battery will not be discharged while the output is OFF However even if properly calibrated the zero current has...

Страница 75: ...egative current limit setpoint The discharging value can be different than for charging by using independent limits to set different values for positive and negative current limit 3 3 6 1 2 BATTERY OP...

Страница 76: ...at these limits have in both voltage and current mode and refer ences the corresponding paragraph for changing the parameter 3 3 8 ENABLING DISABLING DC OUTPUT POWER The behavior of the unit when disa...

Страница 77: ...s automatic shutdown upon accidental removal of the cable at the Master PAR SER IN PROTECT PORT can be implemented with a simple internal modification Contact Kepco for details FIGURE 3 2 REMOTE SHUTD...

Страница 78: ...cted during the Reset Power up PAR 3 3 2 1 3 3 8 3 REMOTE ON OFF USING TRIGGER PORT OFF AND DIGITAL COMMAND ON This method of controlling the output uses Trigger Port pin 2 to turn the output off and...

Страница 79: ...3 is set to 00000 the protection limits are controlled by the pins 5 6 13 and 14 of the Analog I O port see Table 2 12 If S3 is set to 100xx x set as desired S3 3 and S3 4 0 S3 5 1 the protection lim...

Страница 80: ...ference voltages at pins 5 6 13 and 14 of the Analog I O port only two pins are active determined by which limit channel is active see Table 2 12 The mode voltage current is determined by the state of...

Страница 81: ...requency response is reduced as specified in the instruction manual included with the cable kit A fre quency that exceeds the bandwidth of the BOP will cause the output to be distorted For linear resp...

Страница 82: ...in is changed from 3 6 to 29 10 2 9 The gain can be changed only using digital CURR MODE see PAR B 27 and VOLT MODE see PAR B 94 commands but the output is controlled by the external refer ence signal...

Страница 83: ...10V analog signal sets the positive current protect limit from 10 of the nominal value to full scale current 10V corresponds to rated max imum current e g for BOP 36 28GL 10V sets positive current lim...

Страница 84: ...alog I O port 3 5 DIGITAL CONTROL 3 5 1 PASSWORD PROTECTION The Password is only effective when using digital control The commands that can be password protected are SYST SEC IMM and all CALibration c...

Страница 85: ...ng the CURR PROT commands see PAR s B 29 through B 36 for details These commands program the current protection values If load current reaches the current protection values current will be clamped so...

Страница 86: ...cally 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...

Страница 87: ...ure to provide an adequate delay can result in Commands that are not processed The following command may be received in error causing an error in the transmission Unit lock up requiring power cycling...

Страница 88: ...s 0 GPIB card 0 int adr 6 Power Supply address char status_byte status byte from the power supply define MAV 0x10 bit 4 of the status byte is the Message AVailable bit by 488 2 specification Function...

Страница 89: ...while a sinewave at 440 Hz will use 24 points for each cycle Note that a single segment between 0 01Hz and 1 8Hz uses all available points so subsequent segments will result in an error 223 too much d...

Страница 90: ...illo scope must be floating before connecting to the OUT MON or OUT S terminals or the COM MON or COM S terminal of the BOP Connect the oscilloscope across OUT S and COM TABLE 3 5 SQUARE WAVEFORM FREQ...

Страница 91: ...ue within model rating acceptable e g for BOP 100 10GL maxi mum amplitude is 200V Values that exceed the maximum or minimum software limits see PAR 3 3 6 are neither accepted nor executed Offset xxx x...

Страница 92: ...up the unit to accept all points in waveform LIST VOLT APPL RAMP 50 5 8 50Hz 5V p p 8V offset 5 Send the following commands to create a repeating 1 4 sine wave that starts at 6V and rises to 10V over...

Страница 93: ...ions for changing the GPIB address PAR 3 6 3 1 1 RS 232C Operation PAR 3 6 4 a discussion of the VISA Virtual Instrumentation Software Architecture driver supplied with the unit PAR 3 6 5 fol lowed by...

Страница 94: ...d 3 10 define the messages sent by the BOP or received by the BOP via the IEEE 488 bus in IEEE 488 command mode and IEEE 488 data mode respectively These messages are enabled during the handshake cycl...

Страница 95: ...Data accepted Received or Sent DAV Data Valid Received or Sent DCL Device Clear Received see PAR 3 6 3 1 2 IFC Interface Clear Received MLA My Listen Address Received MTA My Talk Address Received OTA...

Страница 96: ...ure baud rate prompt echo or XON XOFF refer to PAR 3 6 4 3 Behavior of the serial interface is described in PAR 3 6 4 1 and RS 232 Implementation is described in PAR 3 6 4 2 3 6 4 1 SERIAL INTERFACE T...

Страница 97: ...not result in lost data Figure 3 8 illustrates the echo mode the prompt method and the default XON XOFF method described in the following paragraphs FIGURE 3 8 RS 232 IMPLEMENTATION Only seven control...

Страница 98: ...iginator stops sending data after receiving the XOFF transmission off character 013H and waits until the XON character is received before sending additional data Control characters either CR or LF are...

Страница 99: ...3 1 set to 0 during Reset Power up To establish a baud rate of 19 2K upon power up set power up switch S3 1 to 1 and perform the Reset Power up see PAR 3 3 2 1 The baud rate can also be changed using...

Страница 100: ...s using a virtual front panel observed on a com puter monitor kp_appl c Although the software drivers supplied by Kepco are VISA compliant they also require the installation of the proper VISA driver...

Страница 101: ...trating the structure of SCPI subsystem commands used in the BOP Power Supply with the root at the left side and spe cific commands forming the branches The following paragraphs introduce the subsyste...

Страница 102: ...volts The list sub system allows the user to modify the unit s behavior to generate parts of waveforms and to used specific dwell times as appropriate The APPLY subsystem accommodates 126 different s...

Страница 103: ...he list and VOLT MODE FIX PAR B 94 or CURR MODE FIX PAR B 27 stop the list LIST com mands are not accepted while a list is running If LIST COUNT is between 1 and 255 when the count decrements to 0 the...

Страница 104: ...larger with each subsequent data update the Flash memory fills up and needs to be compressed The compression of the Flash EEPROM called packing is automatically handled by the BOP microprocessor s co...

Страница 105: ...ATe ON or OFF STATe MODE ACTIVE RESISTIVE BATTERY MODE CONTrol CONT MEMory subsystem MEMory UPDate RELoad ROOT colon SYSTem subsystem SYSTem BEEP COMM GPIB ADDR val GPIB ADDR SER BAUD BAUD ECHO ECHO P...

Страница 106: ...ve POSitive POSitive LIM BOTH LIM BOTH LIM NEGative LIM NEGative LIM POSitive LIM POSitive ROOT colon SOURce CURRent LEVel IMMediate AMPLitude val AMPLitude MIN MAX TRIGgered AMPLitude val AMPLitude L...

Страница 107: ...e first and then current However you do not have to do a complete calibration each time If required you may calibrate only the voltage or the current and then proceed to saving the calibration results...

Страница 108: ...used by the BOP are listed in Figure 3 9 Each keyword has a long form and a short form For the long form the word is spelled out com pletely e g STATUS OUTPUT VOLTAGE and TRIGGER are long form keyword...

Страница 109: ...T MAX FIGURE 3 10 MESSAGE STRUCTURE 3 7 4 6 MESSAGE UNIT SEPARATOR When two or more message units are combined in a program message they must be separated by a semicolon e g VOLT 15 MEAS VOLT and CURR...

Страница 110: ...s an understanding of the subsystem command tree illustrated in Figure 3 9 The root is located at the top left corner of the diagram The parser goes to the root if a message terminator is recognized b...

Страница 111: ...meas volt curr will read actual output voltage and programmed current since the colon preceding curr indicates that curr is not part of the meas command and starts at the root UPPER case letters in mn...

Страница 112: ...ters is associated with two related registers an event register which holds unlatched events reported in real time by the instrument and is cleared by reading the register and an enable register which...

Страница 113: ...trigger source is external and the trigger input goes low the WTG will remain in a one condition until after the trigger input goes high 6 Transient Armed 1 indicates the transient function is enable...

Страница 114: ...al voltage and current then prints the measurements 3 8 OPERATOR TROUBLESHOOTING If the unit does not behave as expected refer to the following procedure for problems that can be corrected without ref...

Страница 115: ...r 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 Open DEV6 defined by IBCONF bd ibfind GPIB0 Open GPIB card ibsic bd Send Inte...

Страница 116: ......

Страница 117: ...n error 24 x Hardware see PAR B 132 will be placed in the error queue TABLE 4 1 CALIBRATION SUMMARY Type Step Reference Type and Value Monitored Parameter Output Conditions Notes VOLTAGE INTERNAL 1 ZE...

Страница 118: ...LO towards COM S 2 Adjust for zero pos FS CURRENT GAIN 1 ZERO 2 POSITIVE External 1 0 0V 2 10 0V Analog I O Port pin 11 ref to 10 Output Current 1 0 0A 2 0 0A Short with Meas Shunt Automatic CM 1 DVM...

Страница 119: ...and 10 0V 0 1mV either positive and negative or floating Stability better than 10 5 Internal Impedance better than 0 1 Ohms Output Current 0 5mA when sourcing 0 15mA when sinking 4 3 CALIBRATION USING...

Страница 120: ...ent from zero to maximum Adjust the output to obtain the closest value above the full scale value TABLE 4 4 CURRENT CALIBRATION MEASUREMENTS AND TOLERANCES MODEL SENSE RESISTOR VALUE SEE NOTE AND TABL...

Страница 121: ...unit on 2 For ZERO calibration adjust output to obtain value closest to zero 3 For FULL SCALE calibration adjust the output to obtain the closest value above the nominal full scale value 4 Set the un...

Страница 122: ...mmands as needed see PAR 4 3c until the reading is as close as possible above absolute value the nominal full scale value within the limits specified in Table 4 3 for FULL SCALE VPR LIMIT 9 Connect a...

Страница 123: ...MIN then send the CAL ZERO command This enables the BOP to recognize that the voltage at the V_LIM_EXT pin is 10 0V 18 Set the BOP to minimum maximum negative output by sending CAL CLIM MIN then send...

Страница 124: ...is as close to zero as possible within the limits specified in Table 4 4 for CURRENT ZERO The sense resistor will be dissipating full rated current of the BOP If it is hot to the touch the sense resi...

Страница 125: ...specified in Table 4 4 for CURRENT ZERO 28 Replace the 0V d c reference applied to analog I O port A2A5J6 pin 11 with a 10V 0 1mV d c reference voltage Set the BOP to maximum positive output current...

Страница 126: ...haracters at the end are optional and represent the calibration date of the power supply The date entered in this manner is reported in the idn query 4 3 2 CALIBRATION OF SERIES OR PARALLEL CONNECTED...

Страница 127: ...e no longer available Table 4 5 illustrates calibration storage and the use of the CAL DUMP query and CAL COPY command TABLE 4 5 CALIBRATION STORAGE COMMAND WORKing PRIor OLDest FACTory MASTer FIRst 1...

Страница 128: ......

Страница 129: ...yntax ESE integer where integer positive whole number 0 to 255 per Table A 2 Default Value 0 Description This command programs the standard Event Status Enable register bits The contents function as a...

Страница 130: ...eturn value Character string Description Identifies the instrument This query requests identification The power supply returns a string which contains the manufacturer name the model factory calibrati...

Страница 131: ...egister was read Bit 1 indicates operation complete OPC IDN Power supply returns KEPCO BOP1KW 36 28 09 30 2001 123456 4 01 OPC Allows status bit 0 to be set when pending operations complete OUTP ON VO...

Страница 132: ...T The specific commands that are affected and what occurs are explained in PAR 3 6 3 1 3 and Table 3 7 After sending RST it is necessary to send OUT Put ON for programmed values to appear at the outpu...

Страница 133: ...ons for requesting service A serial poll also reads the Status Byte Register except that bit 6 RQS not MSS and RQS will be reset Related Commands SRE SRE See example Fig ure A 1 A 16 TRG TRIGGER COMMA...

Страница 134: ...ponse Description Causes the power supply to wait until all previously issued commands and queries are com plete before executing subsequent commands or queries This command can be used to guaran tee...

Страница 135: ...TP MODE B 17 B 18 SOUR LIST SAMP B 69 SOUR CURR B 19 B 20 SOUR LIST SET SAMP B 70 B 71 SOUR CURR LIM BOTH B 21 B 22 SOUR LIST SET TRIG B 72 B 73 SOUR CURR LIM NEG B 23 B 24 SOUR LIST SET WAIT B 74 B 7...

Страница 136: ...rmed trigger resets WTG if the trigger system is armed INIT CONT set to OFF and INIT sent sending ABORt disarms the trigger system so subsequent trigger commands have no effect If INIT CONT ON has bee...

Страница 137: ...limit 1 5A INIT CONT ON Continuous triggers enabled INIT CONT Power supply returns 1 TRIG SOUR BUS Prepare unit to wait for TRG VOLT TRIG 15 CURR TRIG 3 Power supply output programmed to return to 15V...

Страница 138: ...r CURRent DC Return Value num_value digits with decimal point and Exponent Description Measures actual current This query returns the actual value of output current as determined by the programmed val...

Страница 139: ...ST SET SAMPLE 0003125 establishes the sample timing The value was determined by dividing the sample time 0 005S by the number of samples 16 0 005 16 0 0003125 LIST CURR APPL LEVEL 095 5 Creates the in...

Страница 140: ...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 millisec...

Страница 141: ...2 are set to 1 and if S3 5 is set to 0 the output state upon power up will depend on the information stored in one of the 15 locations selected for power up Related Com mands OUTP CONT OUTP ON B 16 OU...

Страница 142: ...ant current CC mode 2 Examples below are intended only to illustrate command functions Refer to PAR for program ming techniques to optimize performance CURR LIM Returns 28 28 positive and negative def...

Страница 143: ...ort 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...

Страница 144: ...MODE GAIN Configures the unit to use an external reference to provide a proportional out put current CURR MODE PROT allows main channel CURR or VOLT to accept values up to the protection limits of th...

Страница 145: ...tput current Description Establishes the negative protection limit for current maximum is 1 greater than rated nominal out put current B 34 SOURce CURRent LEVel PROTect NEGative QUERY CURR PROT NEG Sy...

Страница 146: ...ROTect LIMit POSitive COMMAND CURR PROT LIM POS Syntax Short Form SOUR CURR LEV PROT LIM POS exp_value Long Form SOURce CURRent LEVel PROTect LIMit POSitive exp_value where value is between minimum bo...

Страница 147: ...URR Long Form SOURce FUNCtion MODE TRIGger VOLT CURR Description Establishes the operating mode of the power supply when a TRIGger command is sent VOLT Constant Voltage mode CV CURR Constant Current m...

Страница 148: ...480 indicating 480 points have been assigned dwell times LIST DWEL Returns 1 38e 4 indicating the unit used 138 microseconds per division automatically selected as the best possible dwell for the wave...

Страница 149: ...UNT 10 Determines that the list will be repeated 10 times when executed LIST COUNT Returns 10 VOLT MODE LIST Initiates execution of the list The unit outputs a sawtooth waveform that increases from 20...

Страница 150: ...array does not exceed the unit s capabilities B 57 SOURce LIST CURRent APPLy SWEep COMMAND LIST CURR APPL SWE Syntax Short Form LIST CURR APPL SWE value1 value2 Long Form LIST CURRent APPLy SWEep val...

Страница 151: ...ed list of up to 16 values indicating the dwell time parameters entered i e the contents of LIST DWEL locations of Table B 2 Related Commands LIST DWEL LIST QUERy See example Figure B 5 B 62 SOURce LI...

Страница 152: ...oints that will be used for the waveform value1 and value2 indicate the boundaries of acceptable dwell times e g if LIST RES returns either 0 000093 0 034000 3933 or 0 034000 0 000093 5900 dwell times...

Страница 153: ...on Returns a comma separated list of numbers representing points followed by V or C The point listings are determined by the settings of LIST SAMP CURR and LIST SAMP VOLT commands The sample s occur a...

Страница 154: ...rigger duration is not established by the LIST SET TRIG command a 221 Settings conflict error results This command must be preceded by LIST CURR or LIST VOLT command otherwise a 221 Settings conflict...

Страница 155: ...Create 10 steps that decrease from 9V to 0V The 21 step list forms a triangle stair waveform that first increases from 0V to 10V and then decreases to 0V LIST DWEL 2 Sets the dwell time for each step...

Страница 156: ...tput to 1 1V next point in waveform waits for Input Trigger high before proceeding Host computer issues another high pulse Trigger input goes high and List proceeds to next point LIST WAIT LOW 1 1 Mai...

Страница 157: ...ement Trigger input low while DVM makes measurement LIST WAIT HIGH 10 Wait for DVM to complete measurement for 33 milliseconds Proceed to next step if trigger input goes high meaning the measurement i...

Страница 158: ...Valid from 0 to 359 99 degrees value2 is stop angle Valid from 0 01 to 360 00 degrees Description Allows the user to provide a starting angle for either triangle and sine waveforms and an optional st...

Страница 159: ...alue Pins 1 GND and 3 of the Trigger Port are used as the input trigger If the trigger input goes from high to low TTL logic 0 or short circuit and a wait time has been established by LIST SET WAIT th...

Страница 160: ...Thus each time the host computer issues a positive pulse the BOP increments and the DVMs take measurements on the trailing negative going edge of the positive pulse The positive pulse can be very sho...

Страница 161: ...by the user B 90 SOURce VOLTage LEVel LIMit NEGative COMMAND VOLT LIM NEG Syntax Short Form SOUR VOLT LEV LIM NEG value Long Form SOURce VOLTage LEVel LIMit NEGative value where value is between zero...

Страница 162: ...he power supply output goes to 10V for 0 1 seconds Similarly sending VOLT TRIG 14 VOLT MODE TRAN 05 and TRG causes the output to go to 14V for 0 05 seconds If the time nn exceeds 2 seconds error messa...

Страница 163: ...ntifies how voltage protection limits are controlled FIX for Fixed EXT for external LESS for the lesser of the internal fixed and external protection limit values See PAR B 98 for details B 100 SOURce...

Страница 164: ...R 3 5 5 2 and Figure 3 6 for spe cial programming considerations B 105 SOURce VOLTage LEVel PROTect LIMit BOTH QUERY VOLT PROT LIM BOTH Syntax Short Form SOUR VOLT LEV PROT LIM BOTH Long Form SOURce V...

Страница 165: ...ceeds the maximum for the model being programmed error message 222 Data out of range is posted in output queue If value exceeds VOLT LIM HIGH value a value corresponding to the voltage limit will be p...

Страница 166: ...s command sets the Operation Enabled Register Table B 3 to 8193 and the Questionable Register to 255 See example Figure B 11 B 117 STATus QUEStionable EVENt QUERY STAT QUES Syntax Short Form STAT QUES...

Страница 167: ...r CC and CV bits STAT OPER ENAB Returns 1280 256 1024 CC and CV bits set INIT CONT ON Continuous triggers enabled STAT OPER COND Power supply returns 256 to indicate that power supply is in constant v...

Страница 168: ...unication GPIB ADDRess Return Value int_value 0 to 30 Description Identifies selected power supply GPIB address B 124 SYSTem COMMunication SERial BAUD COMMAND SYST COMM SER BAUD Syntax Short Form SYST...

Страница 169: ...YST ERR 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 spondin...

Страница 170: ...consid erations B 140 SYSTem PASSword STATe QUERY SYST PASS STAT 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...

Страница 171: ...set to 0V voltage mode and output set to OFF except if RO1 see below is set LF0 Line Feed not provided upon empty buffer condition LF1 Line Feed provided if buffer is empty and a read is performed RO0...

Страница 172: ...rature Error 1xx03 Output Overcurrent 1xx04 Output Overvoltage 1xx05 A2 Instant Overcurrent 1xx06 A2 15V BUS Missing 1xx07 A3 Overcurrent 1xx08 A4 Module Temperature Error 1xx09 A4 Output Voltage Erro...

Страница 173: ...save RCL recall MEMory SAVE MEMory UPDAte or CALibrate STORe error 314 Save recall Memory Lost Device Error bit 3 1 A memory location that was saved earlier was lost due to a flash error in Analog pro...

Страница 174: ......

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