Xantrex GPIB-XPD, Operating Manual

Page 1: ...Operating Manual Internal GPIB Interface for XPD Series Programmable DC Power Supply GPIB XPD...

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Page 3: ...Operating Manual for Internal GPIB Interface for XPD 500 Watt Series Programmable DC Power Supply...

Page 4: ...to use parts or products of original or improved design in the repair or replacement If Xantrex repairs or replaces a product its warranty continues for the remaining portion of the original Warranty...

Page 5: ...e product exchanged under warranty What does this warranty not cover This Limited Warranty does not cover normal wear and tear of the product or costs related to the removal installation or troublesho...

Page 6: ...WILL XANTREX BE LIABLE FOR ANY SPECIAL DIRECT INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES LOSSES COSTS OR EXPENSES HOWEVER ARISING WHETHER IN CONTRACT OR TORT INCLUDING WITHOUT RESTRICTION ANY ECONO...

Page 7: ...ur product user manual for limitations on uses of the product Specifically please note that this power supply is not intended for use in connection with life support systems and Xantrex makes no warra...

Page 8: ...rgy for some time after power is removed CAUTION Operate the power supply in an environment free of flammable gases or fumes To ensure that the power supply s safety features are not compromised use t...

Page 9: ...s and any changes in switch settings The user should also have experience with a computer based communications software package Refer to your power supply manual for installation configuration and ope...

Page 10: ...About This Manual viii Operating Manual for GPIB for XPD Series Power Supply...

Page 11: ...Mode Startup 21 Remote Mode Operation 22 Local Mode Operation 23 IEEE 488 Controller Connection 23 Internal PCB Jumper Selections 23 OVP Selection 23 TTL Shutdown 24 User Signals 25 Connector J21 Use...

Page 12: ...Introduction 49 Voltage Mode Calibration 50 Voltage Calibration Setup 50 Voltage Program Calibration Procedure 50 Voltage Readback Calibration Procedure 50 Current Mode Calibration 52 Current Calibra...

Page 13: ...upt generation with user designated fault conditions Both the voltage and current output are precisely programmed directly in volts and amps with 16 bit resolution Additionally the built in DVM and cu...

Page 14: ...d service request over voltage protection and remote operation Foldback in CV or CC mode with reset Local Lockout capability Software calibration Programmable Functions Output voltage and current Soft...

Page 15: ...6mV 0 7mA 18 6mV Program Accuracy1 Voltage Current OVP 1 Apply accuracy specifications according to the following voltage program accuracy example Set a model XPD 18 30 power supply to 10 volts The ex...

Page 16: ...Features and Specifications Specifications 14 Operating Manual for GPIB for XPD Series Power Supply...

Page 17: ...he GPIB interface printed circuit board PCB Initial Inspection On first receiving your unit perform a quick physical check Ensure each package contains a power supply with its GPIB interface board ins...

Page 18: ...Front Panel with GPIB Interface Installed CAUTION Use proper static control techniques to avoid damage to static sensitive components on the printed circuit board Service Request LED SRQ Comes on at...

Page 19: ...ponents on the printed circuit board S1 Switch 1 Remote Local Startup 2 Power On Service Reques Enable Disable 3 Not Used 4 8 Primary Address Selection A1 A5 Switch Position Reference markings 0 1 Err...

Page 20: ...ne active low See page 27 2 3 default User TTL S D line active high J20 Remote OVP Control Selection closed default See page 23 open Note All other jumpers are not user selectable LED INDICATORS D1 Re...

Page 21: ...h to select the state of the Power ON Service Request See Power On Service Request PON SRQ on page 21 3 Remote Local Operation Use the rear panel PON REM switch to select remote or local startup of th...

Page 22: ...A5 to set the primary address for the power supply See Table 2 2 IEEE 488 Primary Address Selection Switch 0 OFF OPEN Switch 1 ON CLOSED Table 2 2 IEEE 488 Primary Address Selection Note Ensure you as...

Page 23: ...face Subplate on page 17 Table 2 3 SRQ Switch Selection Remote Local Operation Remote Local Mode Startup Start the power supply either in local mode or in remote mode by setting the power ON remote PO...

Page 24: ...3 Operation for a complete list of device dependent commands available with this interface For information about how to use GPIB commands and GPIB lines refer to the documentation for the particular...

Page 25: ...GPIB interface to your IEEE 488 GPIB network The IEEE 488 connector uses mating connector J8 on the rear panel of the power supply Internal PCB Jumper Selections You can select how you use OVP over v...

Page 26: ...rol Mode Selection TTL Shutdown You can use the Shutdown function to disable or enable the supply s output Disabling the supply using TTL shutdown allows you to make adjustments to the load or to the...

Page 27: ...a standard 8 position telephone jack and data cable to connect to J21 To locate the connector refer to the GPIB interface subplate drawing in Figure 2 2 on page 21 See Figure 2 4 User Signals J21 Conn...

Page 28: ...ed by VSET x J21 3 Isolation signal open collector asserted by OUT OFF J21 4 Fault signal open collector asserted when bit set in fault register J21 5 External Vcc 15V maximum supplied by connecting a...

Page 29: ...packaged and shipped with the power supply interface card To install the ferrite block 1 Position the block no more than 5 cm 2 from the power supply end of the J21 user cable 2 Open the ferrite block...

Page 30: ...tion and Configuration User Signals 28 Operating Manual for GPIB for XPD Series Power Supply Figure 2 6 J21 User Cable with Ferrite Block J21 User Cable Ferrite Block To User Custom Interface To J21 C...

Page 31: ...d devices could include programmable AC or DC power supplies oscilloscopes signal generators digital voltmeters universal counters readouts relays and printers Use the GPIB interface to relay GPIB ins...

Page 32: ...cceptor Handshake Device must properly receive remote multiline messages T6 Talker Device must be able to transmit L4 Listener Device must receive commands and data Interface Functions DC1 Device Clea...

Page 33: ...t be configured remotely to respond to a parallel poll with either a 1 or 0 on one of the DIO lines if the unit is requesting service Example Service Request Service request is a uniline message asser...

Page 34: ...lt register is set by a fault condition in the supply See also Accumulated Status Status and Fault Registers on page 46 FAULT query to reset 1 2 Not used 2 4 Not used 3 8 Not used 4 16 Ready Set when...

Page 35: ...arameter or COMMAND parameter parameter You can enter commands in upper or lower case lettering Example MASK FOLD mask fold Do not further abbreviate command names or parameters Example MASK FOLD MK F...

Page 36: ...ault unit is amps float float A float mA time The time in seconds or milliseconds If no unit is given the default unit is seconds float float s float ms voltage Vlo Vhi The voltage in volts or millivo...

Page 37: ...e Feed Format COMMAND parameter COMMAND parameter parameter LF Most computer controllers automatically send LF with output statements Order You may send commands in any order keeping in mind that only...

Page 38: ...a new output voltage or current is specified FOLD Sets foldback mode for the supply HOLD Enables or disables voltage current setting hold mode for the supply IMAX Sets an upper soft limit on the progr...

Page 39: ...ks for the present hold mode setting ID Asks for the power supply s model name and master EPROM version IMAX Asks for the supply s soft current limit setting IOUT Measures the supply s actual current...

Page 40: ...pt for voltage programming VHI Sets the voltage output to the high calibration point VLO Sets the voltage output to the low calibration point VRDAT Calculates the slope and intercept for voltage readb...

Page 41: ...s as listed in the status register AUXA 1 ON 0 OFF Controls the AUXA output signal level at rear panel connector J21 7 Active low Initial value AUXA 0 AUXA Asks for the present set value of the AUXA o...

Page 42: ...rs the ERR bit in the accumulated status register See Error Codes on page 47 Response ERR error number Example ERR 0 if no error FAULT Asks for the state of the fault register A bit is set in the faul...

Page 43: ...to the output terminal This value is at the high end of the power supply s current range and is read by an external device connected as part of the calibration procedure Refer to this value as IHI and...

Page 44: ...amps default or in milliamps This programmed current is the actual output in CC mode or the current limit in CV mode Range 0 to model maximum output current IMAX Initial value 0 amps ISET Asks for the...

Page 45: ...supply to respond to a variety of fault conditions with a request for service to the IEEE 488 bus controller With SRQ ON the SRQ line will be asserted true whenever the FAU bit in the supply s serial...

Page 46: ...unmasked Response UNMASK fault mask where fault mask is the decimal equivalent of the total bit weights for the operating conditions as listed in the status and fault registers See Accumulated Status...

Page 47: ...f the programmed voltage range Refer to the output value as VRHI and record it to use as input with the VRDAT command Set CMODE ON before using this command See also the calibration procedures in Sect...

Page 48: ...he error ERR bit is reset in the accumulated status status and serial poll registers with an error query ERR 3 The accumulated status register is cleared with an accumulated status query ASTS 4 A faul...

Page 49: ...ctly placed word number separator or terminator Example OFF SRQ VOUT 6 MASK ERR 5 Number Out of Range Specified a value for the command which was outside of the allowed range 6 Attempt to Exceed Soft...

Page 50: ...or successfully recovered from an illegal operating code The event is transparent to the GPIB communications bus and the GPIB interface continues to function normally The red COP LED at D4 indicates t...

Page 51: ...ds Current sensing shunt resistor rated for 150 of maximum output current 0 25 accuracy or better Connection wires rated for the unit s maximum output current and voltage A GPIB equipped computer to s...

Page 52: ...nd record the output voltage as shown on the external voltmeter 5 Send the command VDATA vlo vhi where vlo and vhi are the values read from the voltmeter when the VLO and VHI commands were sent When t...

Page 53: ...vhi where vlo and vhi are the values read from the voltmeter after the VRLO and VRHI commands were sent The processor calculates the offset value required to calibrate the power supply When the power...

Page 54: ...d IHI VHI to the supply Measure and record the output voltage shown on the external voltmeter 5 Calculate ILO and IHI from the voltages read from the external voltmeter and the shunt resistance I V R...

Page 55: ...age shown on the external voltmeter Send IRHI again 5 Calculate IRLO and IRHI from the voltages taken from the external voltmeter and the shunt resistance I V R 6 Send the command IRDAT ilo ihi to the...

Page 56: ...the PCB of jumper J2 3 Activate calibration mode by sending command CMODE ON or CMODE 1 to the power supply 4 Send the command OVCAL to the power supply The ADR LED will light during OVP calibration...

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