GPIB-XHR GPIB-XFR GPIB-XFR3 Operating Manual Internal GPIB Interface for XHR/XFR Series Programmable DC Power Supplies
Operating Manual for Internal GPIB Interface for XHR 1000 Watt Series, XFR 1200 Watt Series and XFR 2800 Watt Series Programmable DC Power Supplies
Limited Warranty What does this warranty cover and how long does it last? This Limited Warranty is provided by Xantrex Technology, Inc. (“Xantrex”) and covers defects in workmanship and materials in your GPIB Interface Card. This warranty lasts for a Warranty Period of 5 years from the date of purchase at point of sale to you, the original end user customer.
Direct returns may be performed according to the Xantrex Return Material Authorization Policy described in your product manual. For some products, Xantrex maintains a network of regional Authorized Service Centers. Call Xantrex or check our website to see if your product can be repaired at one of these facilities. In any warranty claim, dated proof of purchase must accompany the product and the product must not have been disassembled or modified without prior written authorization by Xantrex.
Disclaimer Product THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY PROVIDED BY XANTREX IN CONNECTION WITH YOUR XANTREX PRODUCT AND IS, WHERE PERMITTED BY LAW, IN LIEU OF ALL OTHER WARRANTIES, CONDITIONS, GUARANTEES, REPRESENTATIONS, OBLIGATIONS AND LIABILITIES, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE IN CONNECTION WITH THE PRODUCT, HOWEVER ARISING (WHETHER BY CONTRACT, TORT, NEGLIGENCE, PRINCIPLES OF MANUFACTURER’S LIABILITY, OPERATION OF LAW, CONDUCT, STATEMENT OR OTHERWISE), INCLUDING WITHOUT
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Power Supply Safety WARNING—High Energy and High Voltage Exercise caution when using and calibrating a power supply. High energy levels can be stored at the output voltage terminals on a power supply in normal operation. In addition, potentially lethal voltages exist in the power circuit and on the output and sense connectors of a power supply with a rated output greater than 40 V. Filter capacitors store potentially dangerous energy for some time after power is removed.
About This Manual This technical manual is for the internal GPIB interface, a microprocessor-controlled option card for XHR Series and XFR Series DC output power supplies. This manual provides you with descriptions and specifications, user options, and configuration instructions, in addition to a command set which enables you to manage the power supply from an external source. Error messages and calibration procedures are also included.
About This Manual viii Operating Manual for GPIB for XHR/XFR Series Power Supply
Contents About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Section 1. Features and Specifications Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Command Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Accumulated Status, Status, and Fault Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Diagnostic LEDs . . . . . .
Section 1. Features and Specifications Description The internal GPIB interface card allows you to operate your power supply from a computer controller via the IEEE-488 communications bus. See Figure 1.1, “Sample Configuration using GPIB Interface”. The GPIB interface allows complete remote programming of your power supply, including status reporting, settings query, and interrupt generation with user-designated fault conditions.
Features and Specifications Features and Functions Features and Functions Features • • • • • • • • • Programmable • Functions • • • • • • Readback • Functions • • • • • • • • 12 16-bit programming and readback of voltage and current Programmable soft limits for voltage and current Programmable over voltage protection with reset Easy-to-use, self-documenting command set Isolated user-programmable signals such as fault, polarity, isolation, and auxiliary signals LED status signals: error, addressed, ser
Features and Specifications Specifications Specifications The specifications in this section are warranted at 25°C ±5°C unless otherwise specified. All specifications are subject to change without notice. Table 1.1 Specifications for XFR 1200 W Series Supply with GPIB Interface Installed (7.5 V to 40 V) Models 7.5-140 12-100 20-60 35-35 40-30 Program Resolution Voltage Current OVP 1.16mV 19.6mA 1.16mV 1.8mV 14mA 1.8mV 3.08mV 8.4mA 3.08mV 5.4mV 5.4mA 5.4mV 6.2mV 4.2mA 6.2mV 10mV ±0.12% 500mA ±0.
Features and Specifications Specifications Table 1.2 Specifications for XFR 1200 W Series Supply with GPIB Interface Installed (60 V to 600 V) Models 60-20 100-12 150-8 300-4 600-2 Program Resolution Voltage Current OVP 9.2mV 2.8mA 9.2mV 15.4mV 1.68mA 15.4mV 23.1mV 1.12mA 23.1mV 46.2mV 0.56mA 46.2mV 92.4mV 0.28mA 92.4mV 150mV ±0.25% 120mA ±0.1% 600mV 150mV ±0.35% 80mA ±0.1% 800mV 225mV ±0.35% 80mA ±0.1% 1.5V 225mV ±0.35% 80mA ±0.1% 3.0V 250mV ±0.35% 50mA ±0.1% 6V 9.2mV 2.8mA 15.4mV 1.
Features and Specifications Specifications Table 1.3 Specifications for XFR 2800 W Series Supply with GPIB Interface Installed (7.5 V to 40 V) Models 7.5-300 12-220 20-130 33-85 40-70 Program Resolution Voltage Current OVP 1.16mV 42.0mA 1.16mV 1.8mV 30.8mA 1.8mV 3.08mV 18.2mA 3.08mV 5.1mV 13.0mA 5.1mV 6.2mV 9.8mA 6.2mV 10mV ±0.12% 900mA ±0.1% 80mV 50mV ±0.12% 750mA ±0.1% 150mV 75mV ±0.12% 500mA ±0.1% 200mV 75mV ±0.3% 425mA ±0.1% 330mV 75mV ±0.3% 350mA ±0.1% 400mV 1.16mV 42.0mA 1.8mV 30.
Features and Specifications Specifications Table 1.4 Specifications for XFR 2800 W Series Supply with GPIB Interface Installed (60 V to 600 V) Models 60-46 100-28 150-18 300-9 600-4 Program Resolution Voltage Current OVP 9.2mV 6.44mA 9.2mV 15.4mV 3.92mA 15.4mV 23.1mV 2.52mA 23.1mV 46.2mV 1.26mA 46.2mV 92.4mV 0.56mA 92.4mV 150mV ±0.25% 250mA ±0.1% 600mV 150mV ±0.35% 140mA ±0.15% 800mV 225mV ±0.35% 120mA ±0.1% 1.5V 225mV ±0.35% 80mA ±0.1% 3.0V 250mV ±0.35% 80mA ±0.1% 6V 9.2mV 6.44mA 15.
Features and Specifications Specifications Table 1.5 Specifications for XHR 1000 W Series Supply with GPIB Interface Installed (7.5 V to 60 V) Models 7.5-130 20-50 33-33 40-25 60-18 Program Resolution Voltage Current OVP 1.16mV 42.0mA 1.16mV 1.8mV 30.8mA 1.8mV 3.08mV 18.2mA 3.08mV 6.2mV 9.8mA 6.2mV 9.2mV 6.44mA 9.2mV 10mV ±0.12% 900mA ±0.1% 80mV 50mV ±0.12% 750mA ±0.1% 150mV 75mV ±0.12% 500mA ±0.1% 200mV 75mV ±0.3% 350mA ±0.1% 400mV 150mV ±0.25% 250mA ±0.1% 600mV 1.16mV 42.0mA 1.8mV 30.
Features and Specifications Specifications Table 1.6 Specifications for XHR 1000 W Series Supply with GPIB Interface Installed (100 V to 600 V) Models 100-10 150-7 300-3.5 600-1.7 Program Resolution Voltage Current OVP 15.4mV 3.92mA 15.4mV 23.1mV 2.52mA 23.1mV 46.2mV 1.26mA 46.2mV 92.4mV 0.56mA 92.4mV 150mV ±0.35% 140mA ±0.15% 800mV 225mV ±0.35% 120mA ±0.1% 1.5V 225mV ±0.35% 80mA ±0.1% 3.0V 250mV ±0.35% 80mA ±0.1% 6V 15.4mV 3.92mA 23.1mV 2.52mA 46.2mV 1.26mA 92.4mV 0.56mA 150mV ±0.
Section 2. Installation and Configuration Introduction To use this product, you must have the following equipment: • • • • a compatible model of DC output power supply IEEE-488 connector and cable computer with an IEEE-488 interface Computer-based communications software package We usually install the GPIB interface in a power supply at the factory. Your local distributor or service center can also install the interface, especially for use in a previously-purchased supply already on site.
Installation and Configuration Initial Inspection ! CAUTION Use proper static control techniques to avoid damage to static-sensitive components on the printed circuit board. Remote LED (REM) Local Switch (LOCAL) Remote Programming LEDs: Address LED (ADR) Indicates that the master controller is addressing the unit. Service Request LED (SRQ) Comes on at power up if the PON SRQ switch is set to on. You can enable the SRQ LED during normal operation with the SRQ command.
Installation and Configuration Initial Inspection Error LED (ERR) Indicates that a programming error has occurred. Clear with the error query command. Address LED (ADR) Indicates that the unit is being addressed by the master controller.
Installation and Configuration Initial Inspection JUMPER SELECTION J65 Local OVP control selection [closed] [default]. See page 28. [open] Front Panel OVP Control. J93 User TTL shutdown (S/D) selection [1-2] User TTL S/D line active low. See page 31. [2-3] [default] User TTL S/D line active high. J103 Remote OVP Control Selection [closed] [default]. See page 28. [open] Note: All other jumpers are not user-selectable.
Installation and Configuration Basic Setup Procedure Basic Setup Procedure This procedure can be used as a quick reference for those familiar with the configuration requirements for the GPIB interface as installed in the DC power supply. For those who want more information, each step refers to more detailed procedures located in subsequent sections. Execute each step of the procedure in the sequence given. Table 2.
Installation and Configuration IEEE-488 Primary Address Selection IEEE-488 Primary Address Selection 1. Assign a primary address to each power supply: Choose a number between 0 and 30 which is unique to your IEEE-488 bus, that is, different from other device addresses on the same bus. 2. Locate switch S1 on the GPIB interface rear panel. See “GPIB Interface Subplate” on page 21 for the interface subplate drawing. 3. Use switch positions A1 to A5 to set the primary address for the power supply. See Table 2.
Installation and Configuration Power On Service Request (PON SRQ) Power On Service Request (PON SRQ) The Power ON Service Request (SRQ) switch is located on the GPIB subplate rear panel S1 switch. Enabling the SRQ switch causes the power supply to send a service request to the computer controller when the power supply is turned on or when it re-initializes after a momentary power interrupt. When the PON SRQ state is tripped, the front panel SRQ LED will also turn on.
Installation and Configuration Remote/Local Operation If the rear panel PON REM switch is set to 1, the power supply will power up in local mode. Power supply control is at the front panel. During an operating session, you can toggle between local mode and remote mode by using the front panel LOCAL button and sending commands as described in “Remote Mode Operation” on page 26 and “Local Mode Operation” on page 27. Table 2.
Installation and Configuration Remote/Local Operation While in remote mode, you can change to local mode operation by pressing the front panel LOCAL button, by sending the GPIB GTL (Go to Local) command, or by negating the GPIB REN (Remote Enable) line. You can disable the LOCAL button by enabling the GPIB Local Lockout (LLO) condition. For an example of how to use LLO, see “Setting Local Lockout”.
Installation and Configuration IEEE-488 Controller Connection ibfind GPIB0 ibcmd "?_@\x11" ibfind "devname" ibloc Address the computer controller Send commands (UNL, UNT, MTA0, LLO) in ASCII. Address the unit (devname or device name as configured originally with ibconf). Set unit to local mode. Note: To disable Local Lockout, use the IBIC ibsre0 command in this example.
Installation and Configuration Internal PCB Jumper Selections Control Mode Selection” shows a table of jumper settings and OVP programming selection. Refer to “Basic Setup Procedure” on page 23 for the positions of the jumpers on the GPIB PCB. Table 2.
Installation and Configuration User Signals User Signals Connector J7 User Signals Auxiliary connector J7, located on the GPIB interface rear panel, provides several signals to increase your operating control of the supply. These signals are dependent on the operator's design and uses. The operation of the J7 signal requires that you provide external Vcc and ground. Use a standard 8-position telephone jack and data cable to connect to J7.
Installation and Configuration User Signals Figure 2.5 J7 User Signal Connector Circuit Block Diagram J7 Cable Connection Use a standard 8-position telephone jack and data cable to connect to J7. Add a ferrite block to reduce radiated emission. The one inch square ferrite block with built-in housing clip is 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 J7 user cable. 2.
Installation and Configuration User Signals J7 User Cable Ferrite Block To J7 Connector To User Custom Interface Figure 2.
Section 3. Operation Introduction This section covers GPIB interface programming, starting with IEEE-488 functions, continuing with an extensive set of device-dependent commands, and, finally, providing error codes, and status and fault register information. GPIB Operation A GPIB interface controller card enables you to control an IEEE-488 bus system via computer, identifying which of its interconnected devices are to send and receive data.
Operation GPIB Operation Table 3.1 IEEE-488.1 Interface Functions Implemented Multiline Control Functions Interface Functions Mnemonic Capability Description SH1 Source Handshake Device must properly transfer a multiline message. AH1 Acceptor Handshake Device must properly receive remote multiline messages. T6 Talker Device must be able to transmit. L4 Listener Device must receive commands and data. DC1 Device Clear Device can be initialized to a previously determined state.
Operation GPIB Operation Device Device Trigger will implement the most recently programmed values whether the Trigger unit is in local or remote control. If the power supply is in local mode, the new values will be implemented when it is switched from local to remote control. Device Trigger is typically used to synchronize the operation of a number of addressed devices. Example: Use HOLD Command to set values to be executed when triggered. See “Command Reference” on page 43. Then use:.
Operation GPIB Operation Service Service request is a uniline message asserted by the power supply at power on and Request for fault conditions. Ten (10) power supply conditions are defined as faults: CV, CC, OV, OTP, SD, FOLD, ERR, ACF, OPF, and SNSP. See “Accumulated Status, Status, and Fault Registers” on page 50 for more information. Power ON (PON) can also be flagged in the fault register if the supply's rear panel power on service request (PON SRQ) switch is set to ON.
Operation Command Syntax Command Syntax Manual The manual uses these conventions when displaying command information. These Conventions characters are not part of the command but are used to denote parameters used with the command. < > (angle brackets) Angle brackets enclose a parameter. Do not include the angle brackets in the command line you send to the computer. / (slash) Separates two alternative parameters.
Operation Command Syntax • Use commas between parameters in those commands with more than one parameter, and between mnemonic parameters as in the MASK and UNMASK commands. Only one comma is allowed and it may be preceded or followed by any number of spaces. Example: MASK CV, OV, FOLD Table 3.3 Command Parameters Parameter Description Form , , The current in amps or milliamps. If no unit is given, the default unit is amps.
Operation Command Syntax Command If you send more than one command line, separate the commands with a semicolon. Strings The semicolon may be preceded or followed by spaces. Example: ISET 2.0A; VSET 5V ISET 2.0A; VSET 5V Command Terminators indicate the end of a command string and tell the power supply to Terminators execute the command. The termination character is LF (Line Feed).
Operation Command Summary Command Summary Use these commands to control the operation of the supply. They are listed here in order of function such as PROGRAMMING, QUERY, CALIBRATION, and STATUS commands. See “Command Reference” on page 43 for more detailed information about each command and its use. Table 3.5 Programming Commands 40 Command Description AUXA Selects the state of the AUXA output signal on the J7-7 connector. AUXB Selects the state of the AUXB output signal on the J7-8 connector.
Operation Command Summary Table 3.6 Query Commands Release 3.1 Command Description AUXA? Asks for the state of the set value for the AUXA command AUXB? Asks for the state of the set value for the AUXB command CMODE? Asks for the power supply’s calibration mode status. DLY? Asks for the programmable time delay setting before the supply reports fault conditions.
Operation Command Summary Table 3.7 Calibration Commands Command Description CMODE Places the supply into calibration mode. IDATA Calculates the slope and intercept for current programming. IHI Sets the current output to the high calibration point. ILO Sets the current output to the low calibration point. IRDAT Calculates the slope and intercept for current readback. IRHI Sets the current output to the high readback point. IRLO Sets the current output to the low readback point.
Operation Command Reference Command Reference Table 3.9 Command Reference Command Description ASTS? Asks for the supply’s accumulated status register. The accumulated status register stores any bit that was entered in the status register since the accumulated status query command (ASTS?) was last used, regardless of whether the condition still exists. The accumulated status register has the same bits, weights, and conditions as the status register.
Operation Command Reference Command Description DLY Sets a programmable time delay employed by the supply before reporting fault conditions. The power supply uses the time delay after receiving a new output voltage or current setting via VSET or ISET, or after receiving RST, TRG, or OUT ON commands.
Operation Command Reference Command Description FOLD? Asks for the supply’s present foldback setting. Response: FOLD where mode is: 0 (OFF) or 1 (CV or Constant Voltage mode) or 2 (CC or Constant Current mode) HOLD <1/ON>,<0/OFF> Enables or disables voltage/current setting hold mode for the supply. When HOLD ON is specified, hold mode is enabled so that all voltage and current settings which would normally be implemented by the supply are held until a TRG (trigger) command is received.
Operation Command Reference Command Description IRDAT , Calculates and records the slope and offset for readback voltage using IRLO and IRHI data. Set CMODE ON before using this command. See also the calibration procedures in Section 4. and are in format. IRHI The power supply outputs a current value to an external device connected as part of the calibration procedure and records a current readback value internally.
Operation Command Reference Command Description OVCAL Causes the master controller to perform automatic calibration of the supply’s over voltage protection circuitry. Set CMODE ON before using this command. Ensure jumper J65 on the GPIB Interface PCB is connected for remote operation. OVSET Sets the supply’s over voltage protection trip point in volts (default) or in millivolts.
Operation Command Reference Command Description TRG Implements programmed voltage and current settings which had been in hold mode. The supply operates with previous values until the TRG (trigger) command is sent. UNMASK Enables you to select the supply operating conditions that you are most interested in monitoring for fault occurrence. Mnemonics describing the conditions are separated from each other by commas, and may be sent in any order.
Operation Command Reference Command Description VMAX Sets an upper soft limit on the supply’s programmed output voltage. If the soft limit is exceeded, or if the soft limit value is lower than the present output voltage setting, the supply will ignore the command, turn on the ERR LED, and set the ERR bit in the accumulated status register. Range: 0 to model maximum output voltage (VMAX) Initial value: model VMAX VMAX? Asks for the supply’s soft voltage limit setting.
Operation Accumulated Status, Status, and Fault Registers Accumulated Status, Status, and Fault Registers The GPIB option card uses three separate registers which are always active. They are the accumulated status, status, and fault registers. You can use the status commands shown in Table 3.8, “Status Commands” to activate the registers. The bit register has twelve conditions, each assigned a bit weight.
Operation Error Codes Error Codes If the ERR flag in the accumulated status or fault registers has been activated, an ERR? query will return an error number which corresponds to an event described in the following table. The ERR? query will also clear the ERR bit in the register. Table 3.11 Error Codes ERROR # ERROR IDENTIFICATION Release 3.1 EXPLANATION 0 No Errors 4 Unrecognized Character Received a character such as @,*,$.
Operation Troubleshooting Troubleshooting WARNING Exercise caution when using and servicing power supplies. High energy levels can be stored at the output voltage terminals on all power supplies in normal operation. In addition, potentially lethal voltages exist in the power circuit and the output connector of power supplies which are rated at 40V and over. Filter capacitors store potentially dangerous energy for some time after power is removed.
Section 4. Calibration Introduction WARNING Exercise caution when using and servicing power supplies. High energy levels can be stored at the output voltage terminals on all power supplies in normal operation. In addition, potentially lethal voltages exist in the power circuit and the output connector of power supplies which are rated at 40V and over. Filter capacitors store potentially dangerous energy for some time after power is removed.
Calibration Voltage Mode Calibration Voltage Mode Calibration Voltage 1. Disconnect the load from the power supply which is to be calibrated. Calibration 2. Connect a voltmeter across the power supply’s output terminals. Setup Power Supply Positive Output + Power Supply Negative Output V - VOLTMETER Figure 4.1 Voltage Calibration Setup Voltage 1. Set the power supply for calibration as in Figure 4.1. Program 2.
Calibration Voltage Mode Calibration 3. Send command VRLO; IRLO to the power supply. Wait for the supply to settle. Measure and record the output shown on the external voltmeter. Send VRLO again. 4. Send VRHI; IRHI to the supply. Wait for the supply to settle. Measure and record the output voltage shown on the external voltmeter. Send VRHI again. 5. Send the command VRDAT , where and are the values read from the voltmeter after the VRLO and VRHI commands were sent.
Calibration Current Mode Calibration Current Mode Calibration Current 1. Disconnect the load from the power supply to be calibrated. Calibration 2. Connect a shunt across the supply's output terminals. Setup 3. Connect a voltmeter across the shunt. Power Supply Positive Output Power Supply Negative Output Current Sensing Resistor + V - VOLTMETER Figure 4.2 Current Calibration Setup Current 1. Connect the shunt and voltmeter to the power supply as shown in Figure 4.2. Program 2.
Calibration Current Mode Calibration Current 1. Connect the current shunt and voltmeter to the power supply as shown in Readback Figure 4.2. Calibration 2. Activate calibration mode by sending command CMODE ON or CMODE 1 to Procedure the power supply. 3. Send command IRLO; VRLO to the power supply. Wait for the supply to settle. Measure and record the output voltage shown on the external voltmeter. Send IRLO again. 4. Send command IRHI; VRHI to the supply. Wait for the supply to settle.
Calibration Over Voltage Protection (OVP) Calibration Over Voltage Protection (OVP) Calibration We recommend that you perform OVP calibration every six months. Connecting a digital voltmeter as in “Voltage Calibration Setup” is optional. 1. Disconnect all loads from the power supply. 2. Ensure that jumper J65 on the interface PCB is CLOSED to enable remote OVP calibration (Jumper J65 is closed at the factory). See for the location on the PCB of jumper J65. 3.
Xantrex Technology Inc. 8999 Nelson Way Burnaby, British Columbia Canada V5A 4B5 604 422 8595 Tel 604 421 3056 Fax 800 667 8422 Toll Free North America prg.info@xantrex.com www.xantrex.
