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Amrel PPS-1322/1302A, Руководство пользователя

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[default]), and the power supply address is 12 as is the case for all models. Then the communication path for this 
combination is 512. 
 
COMMON COMMANDS: There is a wide variety of commands available to program the power supply. However, 
the commands which pertain to voltage and current are of most use. These commands are: VSET, ISET, OVSET, 
VOUT?, IOUT?, OVSET? and OCP. 
 
Secondary commands of prime importance pertain to the actual programming language. Some of these commands 
are: OUTPUT, ENTER, DELAY, SEND, PRINT, and CLEAR. The definitions and uses of these commands are as 
follows: 
 
OUTPUT: Addresses the power supply to listen and sends command to power supply. 
 
ENTER: Addresses the power supply to talk and receive data from the power supply. 
 
DELAY: Introduces a time delay to the power supply. 
 
 note: This command is extremely important since the power supplies occasionally require time delays 

in order to execute operations. Otherwise, error messages occur. 

 
CLEAR: Clears the power supply. 
 
 note: The PPS series does not have a CLR command. Therefore, the user must initially specify a 

hardware clear before beginning programming. 

 
SEND:  Sends GPIB management commands. 
 
PRINT:  Prints the specified data to screen or printer. 
 
RUN:  Executes the program.  
 
All commands may be accepted in either upper or lower case letters in ASCII code. The PPS Series accepts integer 
or numeric data as input. Plus (+) and minus (-) signs are also numeric characters. Remember not to program too 
large a value since the power supply rounds off data to suit the power supplies resolution.  
 

SENDING DATA: 

The steps involved in sending data to the power supply are setting the address (power supply & 

computer), function and sending the command (basic). For example, to turn on the output of a power supply 
(single output), send: 
 
 

OUTPUT 512; OUT 1 

where:  
 OUTPUT - Basic Statement 
 512 - DMA channel (5) and GPIB device address (12) 
 OUT - GPIB command 
 1 - enable output (0 disable output) 
 
Continuing on with this example we will set  the output voltage to 11V and output current to 1.7 amps, therefore 
send: 
 

OUTPUT 512; VSET 11 

      OUTPUT 512; ISET 1.7 

 NOTE: The voltage and current values are given in volts and amps. 

Содержание PPS-1322/1302A

Страница 1: ...regulation creates a vital instrument in your lab environment The PPS Series come standard with a GPIB interface and a three year warranty Plus all units come standard with output voltage and current...

Страница 2: ...CONNECTOR The GPIB connector on the rear panel connects your supply to the computer and other GPIB devices A GPIB system can be connected in any configuration star linear or both as long as the follow...

Страница 3: ...th the descriptions to familiarize yourself with the unit Front Panel Figure A B C D ENTER OVP BEEP UTILITY SELECT OUTPUT 21 18 22 23 30 00V 0 000A CC RMT OVP OCP High Figure A Front Panel of PPS 1326...

Страница 4: ...DATA ENTRY 1 002V 0 000A OVP RMT CC OCP 20 2 Figure C Front Panel of PPS 1322 1302A ENTER OVP BEEP CH UTILITY SELECT TRK 10 PROGRAMABLE DC POWER SUPPLY FUNCTION DATA ENTRY CH 2 CH 1 1 002V 0 000A OVP1...

Страница 5: ...eric entry key for number eight 10 TRK 9 Mode control key which activates the tracking mode on or off Applicable only for the PPS 2322 Numeric entry key for number nine 11 LCL CLEAR Used in conjunctio...

Страница 6: ...the value of the digit to be varied Decimal point key 21 This key moves the cursor one digit right until it comes to the digit to be varied 22 CH SELECT This key allows you to select channel 1 or cha...

Страница 7: ...7 OUTPUT channel 1 OUTPUT channel 2 Figure E 2 Rear Panel of PPS 2322 Figure E 3 Rear Panel of PPS 1322 1302A 1326...

Страница 8: ...w terminal 34 External analog input voltage for programming output voltage Input voltage ranges from 0 Volts to 10 Volts 35 Voltage external programming reference point 36 External analog input voltag...

Страница 9: ...322 5 OCP1 Overcurrent protection on channel 1 is enabled When blinking the overcurrent circuit has been activated and disabled the output 6 OCP2 Overcurrent protection on channel 2 is enabled When bl...

Страница 10: ...ense is a measurement of voltage at the load rather than at the output terminals Local connections are made to the and terminals of the power supply Terminated loads only Wrap and bundle wires to redu...

Страница 11: ...over the rated output Their respective voltage and current operating locus figure F are found in operating quadrants for all models The power supply acts as a constant voltage source for comparatively...

Страница 12: ...ccordingly 3 3 1 REMOTE SENSE CONFIGURATION Turn off the power supply before modifying any connections on the rear panel terminal block Configure the unit for remote sensing by first disconnecting the...

Страница 13: ...load leads This minimizes mutual coupling effects and takes full advantages of the supply s low output resistance Each pair of wires should be as short as possible and twisted or bundled to reduce le...

Страница 14: ...llel However only power supplies which have equivalent voltage and current output ratings may be connected in parallel Otherwise damage to the unit may result A typical connection is shown in figure H...

Страница 15: ...C OPERATION The CC operation is similar in many ways to the CV operation except that the output current must also be set To obtain CC operation perform the following steps 1 Program output voltage of...

Страница 16: ...ON In CV operation first program the current of both outputs to the desired value Secondly program the desired operating voltage to equal the sum of the output voltages 3 6 2 CC OPERATION In CC operat...

Страница 17: ...SENSE CONFIGURATION Series Connection Mode The following figure K illustrates the configuration for Remote Sensing in Series Operation OUTPUT channel 1 OUTPUT channel 2 Figure K Series Configuration w...

Страница 18: ...e power supply see figure L The control output voltage is Vout Vv pgm Rated Maximum Output Voltage 10 To control the output current with the analog programming mode requires the following procedure ap...

Страница 19: ...programming the voltage and current values is simple Simply press any of the functional keys and the display shows the present value To change this value simply use the numeric keys to enter a value I...

Страница 20: ...ENT To locally program the current ISET press ISET and enter the value and then press ENTER For example if one wishes to set a current of 1 69 amps press ISET UTILITY 8 1 6 9 ENTER the LCD displays 1...

Страница 21: ...ration the voltage drop across the load leads since the threshold measurement is taken at the output terminals In inductive load applications a high surge voltage would enable the OVP circuit and disa...

Страница 22: ...PS 1326 has two HI LO operating ranges These ranges are controlled by RESERVED FOR OPERATING PROCEDURES The LCD displays LO when the low range is active or HI when the high range is active All other o...

Страница 23: ...mined by the slowest device in communication at that time Address Capability There can be a maximum of one talker and up to 14 listeners at one time Pass Control If a system has more than one controll...

Страница 24: ...e RL1 Remote Local Lockout DC1 Device Clear E1 Open Collector Driver Electronics 250kb s max C0 Non system controller SR0 Omitted Service Request Function TE0 Omitted extended talker function LE0 Omit...

Страница 25: ...0 1 I Input DSP 0 1 0 1 0 1 0 1 I Input PROGRAMMING COMMANDS VSET R Input ISET R Input OVSET R Input VSET1 R Input VSET2 R Input ISET1 R Input ISET2 R Input OVSET1 R Input OVSET2 R Input ADDRESS I In...

Страница 26: ...on as 0 These bit conditions stay true as long as the condition is true The status word received is in ASCII code format it needs to be converted to binary code first Each bit is assigned a particular...

Страница 27: ...l 1 0 or channel 2 1 b1 Signifies whether the outputs CH1 or CH2 are on or off b0 Defines whether a command error has occurred Example Reading the PPS 2322 Status After the STATUS command is entered t...

Страница 28: ...an output is on or off query the status of the power supply 5 5 2 VOLTAGE PROGRAMMING To program a voltage specify an output channel PPS 2322 only and voltage NOTE The default output condition of a p...

Страница 29: ...the queries only one command may be issued at a time The power supply can access only one query at a time 5 5 4 CURRENT PROGRAMMING To program a current specify an output channel only PPS 2322 and cu...

Страница 30: ...the Low range on the PPS 1326 send OUTPUT 516 RANGE 0 Refer to section 4 8 for more information on the dual ranges of the PPS 1326 5 6 FUNDAMENTALS OF PROGRAMMING The following section explains funda...

Страница 31: ...wer supply note The PPS series does not have a CLR command Therefore the user must initially specify a hardware clear before beginning programming SEND Sends GPIB management commands PRINT Prints the...

Страница 32: ...n output voltage of 11V and current of 1 7A Let us recall these actual output values To query the voltage output of the power supply send OUTPUT 512 VOUT Now proceed to obtain the voltage output value...

Страница 33: ...utput voltage output current readback voltage and readback current After all the power supply parameters are calibrated the supply returns to normal operating condition If there are any errors in the...

Страница 34: ...voltmeter to the S and S rear terminals as in figure M for Voltage calibration 4 Turn on the power supply and press 8 ON OFF simultaneously 5 The supply will begin the voltage and current calibration...

Страница 35: ...reads 3301 V press 3 3 0 1 ENTER 6 The current calibration is now complete NOTES For PPS 2322 Ch 1 and Ch 2 can only be calibrated in sequence applies only in local mode The PPS 1326 has two ranges an...

Страница 36: ...5 amp 230VAC 250V 4 Replace the fuse in the fuseholder and re install 5 Reconnect the AC power cord NOTE USE OF ANY FUSE OTHER THAN THE ONE SPECIFIED MAY CAUSE DAMAGE TO THE UNIT POSE A SEVERE FIRE H...

Страница 37: ...cover finish or appearance items nor does it cover items damaged in shipment to American Reliance for repair or calibration To receive service under this warranty you must include proof of purchase in...

Страница 38: ...d be accompanied by a letter or note containing the following information User s Name Proof of Purchase User s Address Description of problem Model number Serial number If service is desired such as c...

Страница 39: ...A dual 2A 3A H 10A 3A 6A L PROGRAMMINGRESOLUTION LSB Voltage and current programming are monotonic over full temperature range Voltage 10mV 10mV 10mV 10mV 2mV 20mV Current 1mA 1mA 1mA 2mA 3mA 2mA OVP...

Страница 40: ...tput voltage response time and the programming command processing time LSB is the maximum time for the output voltage to vary within 0 025 of a final value UP and DOWN times are the maximum times for...

Страница 41: ...on or off OUT1 Sets the output of channel one on or off PPS 2322 series only OUT2 Sets the output of channel two on or off PPS 2322 series only OVSET Set the overvoltage protection OVSET1 Set the ove...

Страница 42: ...PS 2322 series only OVSET Queries the overvoltage value OVSET1 Queries the overvoltage value for channel one PPS 2322 series only OVSET2 Queries the overvoltage value for channel two PPS 2322 series o...

Страница 43: ...C QUERY MESSAGES ERROR CODE MESSAGE DEFINTION ERROR 0 No Errors ERROR 1 Command String Error ERROR 2 Numeric String Out of Range ERROR 3 Numeric String Over Length ERROR 4 Command Sequence Error ERRO...

Страница 44: ...tten in BASICA for a one channel PPS The equipment necessary to calibrate the unit included a Hewlett Packard HP 3458A digital multimeter GPIB interface and a controller card from National Instruments...

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