OPERATION MANUAL Date: 08/07/09 Revision: 8 This manual covers: PD Series Programmable DC Linear Power Supplies All PD Models Covered AMERICAN RELIANCE, INC. 3445 Fletcher Ave., El Monte, CA 91731 Ph: (626) 443-6818 E-mail:ariinfo@amrel.com Website: www.amrel.
_____________________________________________________________________________ WARRANTY INFORMATION CERTIFICATION American Reliance certifies that this product met its published specifications at time of shipment from the factory. THREE-YEAR LIMITED WARRANTY American Reliance warrants to the original user or purchaser that your unit is free from any defects in material or workmanship for a period of three years from the date of purchase.
NON-WARRANTY SERVICE Any American Reliance out-of-warranty instrument that is thought to be defective, but is considered repairable, should be sent in for non-warranty service. Please contact our service department at (800) 654-9838 for current repair charges. The instrument should be returned to American Reliance, by following the directions under the heading "Shipping Instructions" in this section. EXCLUSIVE REMEDIES This remedies provided herein are the customer’s sole and exclusive remedies.
________________________________________________________________________ SAFETY SUMMARY : The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. American Reliance Inc. assumes no liability for the customer’s failure to comply with these requirements.
SAFETY SYMBOLS WARNING The WARNING symbol denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury. Do not proceed beyond a WARNING symbol until the indicated conditions are fully understood and met. CAUTION The CAUTION symbol denotes a hazard.
TABLE OF CONTENTS ONE: FEATURES AND SPECIFICATION INTRODUCTION FEATURES AND OPTIONS CONTROL PANEL & DESCRIPTION LCD STATUS ENUNCIATOR LCD DESCRIPTION FRONT PANEL KEYPAD DEFINITION FRONT PANEL KEYPAD FEATURES REAR CONTROL PANEL & DESCRIPTION REAR PANEL DC OUTPUT CONNECTORS REMOTE SENSE REMOTE SENSE CHARACTERISTICS TTL INTERLOCK SHUTDOWN OUTPUT TERMINALS AND WIRES OPERATING CHARACTERISTIC AND CONFIGURATIONS TWO: INSTALLATION 1-1 1-1 1-1 1-2 1-3 1-3 1-4 1-4 1-6 1-8 1-9 1-9 1-10 1-10 1-11 2-1 INTRODUCTION B
OVER CURRENT PROTECTION ENABLING/DISABLING OVER CURRENT PROTECTION ENABLING/DISABLING OUTPUTS ISOLATION RELAY FUNCTION (OPTIONAL) UTILITY MENU TRACKING SELECTION MODE FRONT PANEL LOCK OPERATION PROFILE SAVE AND LOAD STEPPING MODE LIST CYCLE CONSTANT CURRENT RANGE SELECTION STEPS TO VIEW “*IDN?” INFORMATION FROM THE FRONT PANEL STEP TO SET THE EOS MODE FROM THE FRONT PANEL STEP TO VIEW SELF-TEST RESULT EXTERNAL ANALOG PROGRAMMING 3-12 3-12 3-12 3-13 FOUR: LOCAL OPERATION (MODELS PDXX-XXA WITH GPIB IEEE4888
TRACKING SELECTION MODE FRONT PANEL LOCK OPERATION PROFILE SAVE AND LOAD STEPPING MODE LIST CYCLE FRONT & REAR PANEL DESCRIPTION (PD-A > 600W MODELS) FRONT PANEL KEYPAD DEFINITION (PD-A >600W MODELS) VFD STATUS ENUNCIATOR (PD-A > 600W MODELS) REAR PANEL FEATURES LOCAL OPERATION (PD-A > 600W MODELS) SETTING VOLTAGE SETTING CURRENT OVER VOLTAGE PROTECTION SETTING THE OVER VOLTAGE THRESHOLD ENABLING / DISABLING OVER VOLTAGE PROTECTION OVER CURRENT PROTECTION ENABLING / DISABLING OVER CURRENT PROTECTION ENABLIN
COMMAND INDEX AND ERROR CODE FOR “SYST:ERR?” QUERY SIX: CALIBRATION 7-1 INTRODUCTION CALIBRATION SERVICE ENVIRONMENT AND PRECAUTIONS CALIBRATION CONFIGURATION LOCAL CALIBRATION (ETHERNET & ENCODER OPTION ONLY) LOCAL CALIBRATION (IEEE-488.
ONE: FEATURES AND SPECIFICATION INTRODUCTION This PD Series Programmable DC Linear Power Supply from American Reliance Inc. offers a complete solution to power supply system requirements. This instrument was designed to assist in the development and testing of new products, as well as is being a standard instrument for automatic test systems. This instrument provides low-noise, precisely regulated variable DC output of power. Over Voltage Protection (OVP) and Over Current Protection (OCP) are standard.
CONTROL PANEL & DESCRIPTION ¾ = 12.75” ½ = 8.5” ¼ = 4.25” 1 2 3 5 4 FULL RACK = 19” NOTE: The size of the PD series power supply will depend on the maximum power. DESCRIPTION 1. Liquid Crystal Display (LCD). 2. Front Panel Keypad Control. 3. Front Panel Rotary Knob (ENCODER & ETHERNET OPTION ONLY). 4. Power ON/OFF switch. 5. Front Panel DC Output Terminal.
LCD STATUS ENUNCIATOR LIQUID CRYSTAL DISPLAY: 1 2 3 PROGRAMMABLE DC POWER SUPPLY CV CC OVP OCP 0.0001V 0.0001A 01 1 NO 2 3 4 L5 VLIST 6 7 8 CH 4 RL RNG 5 6 LIST 7 LCL RMT STS 8 9 The LCD displays real time output Voltage/Current & mode status. These messages are viewed in either local or remote mode. LCD DESCRIPTION 1. Indicator for Constant Voltage (CV), Constant Current (CC), Over Voltage Protection (OVP), and Over Current Protection (OCP). 2.
FRONT PANEL KEYPAD DEFINITION VOLT CURR 7 8 VLIST ILIST RANGE 4 5 6 OUT ON/OFF OVP ON/OFF 1 2 VLIST ON/OFF ILIST ON/OFF 0 x OV/TIME UTILIY 9 LOCAL RELAY OCP ON/OFF 3 CHANNEL RESET CLEAR ENTER Most soft keys have dual functions. The first function is mode entry as described by VOLT, CURR right above the key. Once in a mode entry, use these keys as numeric keypad to enter the desired number. Press ENTER key to accept the number keyed or CLEAR key to clear the number.
RANGE 7. 8. 6 OUT ON/OFF 1 (Optional) High/Middle/Low range selection for constant current mode. This key also scrolls menu options. Numeric key for 6. Press this key to turn the output on or off. When the output is disabled, the LCD displays “--OUTPUT OFF--“. VLIST ON/OFF 9. 0 Press this key to start and stop voltage stepping. Numeric key for 0. OVP ON/OFF 10. 2 Press this key to enable and disable over voltage protection. If over voltage protection is enabled, a is indicated by OVP.
REAR CONTROL PANEL & DESCRIPTION (MODELS PDXX-XXE WITH ETHERNET INTERFACE & ENCODER KNOB OPTION) 3 1 4 2 5 NOTE: The size of the PD series power supply will depend on the maximum power. DESCRIPTION 1. Ethernet (LAN) RJ45 connector for Ethernet Interface Only. 2. GPIB Standard IEEE 488 GPIB Interface Connector. 3. AC Input AC input terminal 4. Chassis GND Chassis/line Ground lug screw. 5.
REAR CONTROL PANEL & DESCRIPTION (MODELS PDXX-XXA WITH GPIB IEEE4888.2 & RS232 INTERFACE ONLY) 3 1 4 2 5 NOTE: The size of the PD series power supply will depend on the maximum power. DESCRIPTION 1. RS-232 RS-232 connector for RS-232 Interface Only. 2. GPIB Standard IEEE 488 GPIB Interface Connector. 3. AC Input AC input terminal 4. Chassis GND Chassis/line Ground lug screw. 5.
REAR PANEL DC OUTPUT CONNECTORS TYPE A: Single channel output with output rating less than 8amps. G N D G N D S O U T O U T + O U T + O U T + S + S 1 2 3 4 5 6 7 8 9 10 11 12 E X T V E X T I E X T G TYPE B: Dual channel output with output rating less than 8 amps.
REMOTE SENSE In constant voltage mode (CV), the output is locally strapped for local sensing (normal operation); an unavoidable voltage drop is incurred in the load leads, which adds to its voltage regulation. By connecting the supply for remote sensing, voltage is sensed at the load rather than at the output terminals. This allows the supply to automatically compensate for voltage drops in the load leads and improve regulation.
TTL INTERLOCK SHUTDOWN (OPTIONAL) The PD Series comes with an optional TTL enable/disable function. This is accomplished using a BNC connector on the rear of the power supply. TTL INPUT A ‘Low Signal’ less than 2.8Vdc signal into the TTL input will enable the TTL Shutdown function; it will disable the power supply output. The display will indicate the unit been shutdown and the unit will continuously beep.
OPERATING CHARACTERISTICS AND CONFIGURATIONS These sections contain information on operating characteristics and how to configure the PD Series. All power supplies operate in either constant voltage (CV) or constant current (CC) mode over the rated output. Their respective voltage and current operating locus are found in operating quadrants for all models.
TWO: INSTALLATION INTRODUCTION This section provides recommendations and procedures for inspecting, installing, and testing the power supply. BASIC SETUP PROCEDURE To summarize the basic setup procedure and an overall view of the subsections. Use the procedure as a quick reference if you are familiar with the installation requirements for the power supply. If you want more information, each step in the procedure refers to subsequent sections, which contain more details.
INSPECTION, CLEANING, AND PACKAGING x INITIAL INSPECTION: When you first receive your unit, perform a quick physical check. 1. 2. Inspect the instrument for cracks, scratches, broken switches, connectors, and display. Make sure there is not damage on the AC power cord, the AC in put cover is installed properly and with the strain relief. Make sure there in no loose component in the unit that may cause by the long distance shipping. 3.
In addition to the above, you must include return freight funds if you instrument is out of warranty and are fully responsible for all documents, duties, tariff, and deposits. PACKAGING FOR SHIPPING OR STORAGE Instructions to prepare the instrument for shipping or storage. 1- When returning the unit or sending it to the service center, attach a tag to the unit stating its model number (available at the front panel label) and its serial number (available at the rear panel label).
FUSE REPLACEMENT If the fuse is suspected to be defective, it should be inspected and, if necessary, replaced. To inspect or replace the fuse, please contact to American Reliance service department before perform the following steps: (1) (2) (3) (4) (5) Disconnect the AC line cord from the unit to reduce electrical shock hazard. Remove the fuse by sliding out the fuse holder. The fuse holder is beneath the AC receptacle. Test the fuse for electrical continuity with an ohmmeter.
AC INPUT CORD WARNING The AC input cord is the disconnect device for the power supply. The plug must be readily identifiable to the operator. The input cord must be no longer than 3 m (9.84 feet). The AC cord size wire will depend on the maximum power of the power supply. The AC input cord we recommend is specified below, “AC Cord Specification”. If you require a special cord, call our sales representative.
LOAD WIRING LENGTH FOR OPERATION WITH SENSE LINES For applications using remote sensing, you must limit the voltage drop across each load line. We recommend that you use the larger load wiring or ensure a smaller voltage drop (1V typical max.), although the unit will compensate for up to 5V drop in each line NOISE AND IMPEDANCE EFFECTS To minimize noise pickup or radiation, use shielded pair wiring or shortest possible length for load wires.
INDUCTIVE LOADS To prevent damage to the power supply from inductive kickback or back EMF from a motor, connect a surge absorber diode across the output (parallel). The diode should be rated at greater than two times the supply’s output voltage and have a current surge rating two times greater than the supply’s output rating. Connect the cathode to the positive output and the anode to the negative output/return.
REMOTE SENSE CONFIGURATION CAUTION Turn off the power supply before making any connections on the rear panel terminal block. Configure the unit for remote sensing by first disconnecting the jumper wires between the sense and load terminals. Keep in mind that sense and load leads should be as short as possible. Additionally, the sense leads resistance should be no greater than 0.5 ohm/lead, and the voltage drop over the load leads should be no greater than 2.0V/lead.
CONNECTING MULTIPLE LOADS Proper connection of distributed loads is an important aspect of power supply use. Two common methods of connection are the parallel power distribution method and the radical power distribution method. PARALLEL POWER DISTRIBUTION This distribution method involves connecting leads from the power supply to one load, from that load to the next load, and so on for each load in the system.
MULTIPLE LOADS WITH REMOTE SENSING POWER SUPPLY POSITIVE DISTRIBUTION TERMINAL LOAD 1 (+) Sense (+) Input (+) Output (-) Input (-) Output (-) Sense NEGATIVE DISTRIBUTION TERMINAL LOAD 2 USE THE LARGEST AND SHORTEST LENGTH POSSIBLE (+) Input (-) Input RADIAL POWER DISTRIBUTION METHOD WITH REMOTE SENSE 2-10
THREE: LOCAL OPERATION (MODELS PDXX-XXE WITH ETHERNET INTERFACE & ENCODER KNOB OPTION) INTRODUCTION These sections contain information on how to locally program the PD Series. Upon powering up, the power supplies default to local mode operation. All front panel keys may be used to control the power supply. All operations performed in local mode, may also be performed in remote mode. The unit indicates remote operation when the RMT’s indicator is shows on the display.
(INPUT MODE) SETTING VOLTAGE To locally program the voltage (VSET), press "VOLT", enter the value and press "ENTER". For example, if one wished to set a voltage of 3.99, press: VOLT 3 x 9 9 ENTER The LCD displays 3.99 V and the unit returns to metering mode. SETTING CURRENT To locally program the current (ISET), press "CURR" and enter the value and then press "ENTER". For example, if one wishes to set a current of 1.69 amps, press: CURR 1 x 6 9 ENTER The LCD display 1.
TUNE MODE The Tune Mode provides a simple and accurate method to adjust the output voltage and current. Using the rotary knob, each digit can be fine tuned to obtain precise entries. When the PD series power supply’s output is ON, you may press or hold the rotary knob to enter into the Tune Mode. This function allows you to edit voltage and current and select the right digit for increment or decrement the value. In Tune Mode, the default cursor positioned at the lowest digit of voltage and current value.
ENABLING / DISABLING OVER VOLTAGE PROTECTION The user can enable or disable the OVP circuit by pressing the "OVP ON/OFF (2)" key. When it is enabled the OVP enunciator is on. PROGRAMMING DC POWER SUPPLY CV CC OVP OCP ° 10.010V ° 01 0.1000A ° PROGRAMMING DC POWER SUPPLY CV CC OVP OCP LCL RMT CH RL RNG LIST STS OVER VOLTAGE 01 ° 01 ° LCL RMT CH RL RNG LIST STS When the LCD displays “OVER VOLTAGE”, the over voltage protection circuit has been activated and the output is disabled.
ENABLING / DISABLING OVER CURRENT PROTECTION To enable the over current protection circuit, press the "OCP ON/OFF (3)" key and the OCP enunciator is turned on. To disable the over current protection, press the "OCP ON/OFF (3)" key one more time and the enunciator is turned off. When the LCD displays “OVER CURRENT”, the over current protection circuit has been activated and the output is disabled. To reset, press the "OCP ON/OFF (3)" key and the enunciator will stop blinking.
Note: It is recommended that the output be turned off before closing or reversing the relay. DISPLAYS CLOSE/OPEN FOR ISOLATION RELAY OUTPUT 1 – Press RELAY key: 2 – Press #1 key to close the isolation relay output. 1 – Press RELAY key: 2 – Press #1 key to open the isolation relay output.
UTILITY MENU Follow simply step below for Utility function. < OUTPUT OFF > 1. Metering menu 01 ° as shown, when turned the power switch “ON”. UTILITY PROFILE ° 2. Pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to select (LOAD or SAVE). Press ENTER key to accept the value then press CLEAR key to back to metering menu. a- Load Mode: Press ENTER then use key #6 as ( ) and #4 as ( ) to select profile location (0-3).
UTILITY EOS CODE ° 8. Press six times #6 key after pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to set EOS Code. (NONE / CR / LF / CR+LF). Press ENTER key to accept the EOS Code then press CLEAR key to back to metering menu. UTILITY LCD BACKLIGHT ° 9. Press seven times #6 key after pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to set LCD backlight. (Always / 5 min / Off).
c- CODE: Optional interfaces, such as Ethernet, can be enabled in the field using a code. Please contact an AMREL representative today. UTILITY PANEL LOCK ° 14. Press twelve times #6 key after pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to select Panel Enable Mode or Panel Password Mode): a- Panel Enable Mode: Press ENTER then use key #6 as ( ) and #4 as ( ) to enable/disable (On/Off).
FRONT PANEL LOCK OPERATION This PD series power supply has the ability to lock the front panel when the power is turned OFF and turn back ON. See the front panel lock setting below: 1. 2. Presses UTILITY then use the “ ” key to scroll till “PANEL LOCK” and then press ENTER key. Use the “ ” key to select PANEL ENABLE or PANEL PASSWORD. Panel Enable: 1. Select PANEL ENABLE and press ENTER key. 2. Use the “ ” key to enable or disable (ON/OFF) the front panel keys. 3. Press ENTER key to accept your setting. 4.
STEPPING MODE Voltage/Current List Edit Mode. Voltage/Current step programming permits the user to program a sequence of different voltage outputs with its applied duration via front panel keypad. VLIST setting: 1. 2. 3. 4. 5. 6. 7. At metering menu; Press key# 4 (VLIST) to enter into the voltage list edit mode. Press “CHANNEL” key to select operation channel, if applicable. Use “ ” or “ ” to select list step. Press key# 7 (VOLT) to set the list voltage value at this step.
CONSTANT CURRENT RANGE SELECTION (OPTIONAL) The PD features a three range of output operating for Constant Current Mode (CC). The user must select the PD output range corresponding to the output source value, by pressing the key #6 locates at the front panel keypad, and then the LCD module will display the operating range L / M / H.
EXTERNAL ANALOG PROGRAMMING (OPTIONAL) Inputting an external analog voltage can control the voltage and current outputs of the PD series. The outputs are linearly proportioned to an external input voltage ranging from 0 to 10Vdc. Setting the current and voltage parameters via the front panel or GPIB bus, to either 1) VSET to 0V, ISET to a proper value for CV operation, or 2) setting ISET to 0A and VSET to a proper value for CC operation, the external analogprogramming mode will be activated.
FOUR: LOCAL OPERATION (MODELS PDXX-XXA WITH GPIB IEEE4888.2 & RS232 INTERFACE ONLY) INTRODUCTION These sections contain information on how to locally program the PD Series. Upon powering up, the power supplies default to local mode operation. All front panel keys may be used to control the power supply. All operations performed in local mode, may also be performed in remote mode. The unit indicates remote operation when the RMT’s indicator is shows on the display.
SETTING VOLTAGE To locally program the voltage (VSET), press "VOLT", enter the value and press "ENTER". For example, if one wished to set a voltage of 3.99, press: VOLT 3 x 9 9 ENTER The LCD displays 3.99 V and the unit returns to metering mode. SETTING CURRENT To locally program the current (ISET), press "CURR" and enter the value and then press "ENTER". For example, if one wishes to set a current of 1.69 amps, press: CURR 1 x 6 9 ENTER The LCD display 1.
ENABLING / DISABLING OVER VOLTAGE PROTECTION The user can enable or disable the OVP circuit by pressing the "OVP ON/OFF (2)" key. When it is enabled the OVP enunciator is on. PROGRAMMING DC POWER SUPPLY CV CC OVP OCP ° 10.010V ° 01 0.1000A ° PROGRAMMING DC POWER SUPPLY CV CC OVP OCP LCL RMT CH RL RNG LIST STS OVER VOLTAGE ° 01 ° LCL RMT CH RL RNG LIST STS When the LCD displays “OVER VOLTAGE”, the over voltage protection circuit has been activated and the output is disabled.
ENABLING / DISABLING OVER CURRENT PROTECTION To enable the over current protection circuit, press the "OCP ON/OFF (3)" key and the OCP enunciator is turned on. To disable the over current protection, press the "OCP ON/OFF (3)" key one more time and the enunciator is turned off. When the LCD displays “OVER CURRENT”, the over current protection circuit has been activated and the output is disabled. To reset, press the "OCP ON/OFF (3)" key and the enunciator will stop blinking.
ISOLATION RELAY FUNCTION (OPTIONAL) The AMREL PD Series has an internal output isolation/reverse relay. The relay allows the user to reverse or disconnect the electronic load from the UUT either via the front panel keypad or the GPIB Interface Bus. Pressing the (RELAY) key will activate the relay menu. Use “4” or “6” to select between RELAY OPEN, NORMAL CLOSE or REVERSE CLOSE options. Press Enter key to continue selection or clear to exit.
UTILITY MENU Follow simply step below for Utility function. OUTPUT OFF 1. Main menu 01 ° as show when turned the power switch “ON”. TST 7FFFFFFE 2. Press UTILITY key to advance to MAP0 --------^ use key #8 as up and #2 as down to change MAP group from 0 – 3 to view the status of the unit. Press CLEAR key to back to main menu. GPIB ADDRESS 5 < 3. Press #6 key once after pressed UTILITY key to advance to use key #8 as up and #2 as down to change the GPIB address from 0 – 31 address.
CONSTANT CURRENT RANGE SELECTION (OPTIONAL) The PD features a two range of output operating for Constant Current Mode (CC). The user must select the PD output range corresponding to the output source value, by pressing the key #6 locates at the front panel keypad, and then the LCD module will display the operating range L / M / H.
EXTERNAL ANALOG PROGRAMMING (OPTIONAL) The external analog voltage can program the voltage and current outputs of the PD series. The outputs are linearly proportioned to an external input voltage from 0 to 10Vdc. Setting these parameters via the front panel or GPIB bus, VSET to 0V, ISET to a proper value for CV operation, or setting ISET to 0A and VSET to a proper value for CC operation activates the external analog-programming mode.
FIVE: LOCAL OPERATION FOR SINGLE OUTPUT MODELS RATED ABOVE 600W INTRODUCTION This PD Series Programmable DC Power Supply from American Reliance Inc. offers a complete solution to power supply system requirements. This instrument was designed to assist in the development and testing of new products, as well as is being a standard instrument for automatic test systems. This instrument provides low-noise, precisely regulated variable DC output at 600 to 2K Watts of power.
FRONT & REAR PANEL DESCRIPTION (PD-E > 600W Models) FRONT PANEL CONTROLS (PD-E > 600W Models) Use this Figure 5.1 to familiarize your self with this instrument. See next page for keypad definition. (1 in. = 25.4mm) Figure 5.
FRONT PANEL KEYPAD DEFINITION (PD-E > 600W Models) VOLT CURR 7 8 VLIST ILIST 4 5 6 ILIST ON/OFF OVP ON/OFF OCP ON/OFF CHANNEL 1 2 3 FUNC VLIST ON/OFF OUT ON/OFF PROT 0 x CLEAR OV/TIME UTILIY 9 LOCAL RELAY MODE ENTER Most soft keys have dual functions. The first function is mode entry as described by VOLT, CURR right above the key. Once in a mode entry, use these keys as numeric keypad to enter the desired number.
ILIST 8. 5 9. 6 10. 11. Press this key to do ILIST or Current Step. Use #8 key and #2 key to scroll up to 100 current stepping value. Use #7 key to change current stepping value at that step. Use #9 key to change stepping time interval at that step. Numeric key for 5. This key scrolls menu. Numeric key for 6. ILIST ON/OFF 1 VLIST ON/OFF 0 Press this key to turn the ILIST on or off. When the output is disabled, the LCD displays “--OUTPUT OFF--“.
LCD STATUS ANNUNCIATOR (PD-E > 600W Models) LIQUID CRYSTAL DISPLAY: 1 2 CV CC 35.00V 9.580A
REAR PANEL CONNECTORS (PD-E > 600W Models) 6 5 7 12 9 RS-232 GPIB CAUTION Service By Qualified Personnel Only FLT + RI + L LAN Relay DC output 4 2 10 1 3 8 N WARNING Replace Only With Same Type and Rating Of Fuse 13 FIGURE A.2 POWER SUPPLY REAR PANEL 11 (NOTE: Terminal Block for units up to 30Adc only) REAR PANEL FEATURES 1. Positive DC Output Positive DC Output Connector. 2. Negative DC Output Negative DC output connector. 3. Positive Sense Positive sense connector. 4.
REAR PANEL CONNECTORS (> 30Adc Output Current) 5 6 8 11 RS-232 GPIB CAUTION Service By Qualified Personnel Only FLT + RI + L LAN Relay DC output + 1 3 9 4 2 7 N WARNING Replace Only With Same Type and Rating Of Fuse 12 10 FIGURE 5.3 POWER SUPPLY REAR PANEL REAR PANEL FEATURES 1. Positive DC Output Positive DC Output Connector. 2. Negative DC Output Negative DC output connector. 3. Positive Sense Positive sense connector. 4. Negative Sense Negative sense connector. 5.
LOCAL OPERATION (PD-E > 600W Models) SETTING VOLTAGE To locally program the voltage (VSET), press "VOLT", enter the value and press "ENTER". For example, if one wished to set a voltage of 3.99, press: VOL 3 x 9 9 ENTER The VFD displays 3.99 V and the unit returns to metering mode. SETTING CURRENT To locally program the current (ISET), press "CURR" and enter the value and then press "ENTER". For example, if one wishes to set a current of 1.69 amps, press: CURR 6 1 x 9 ENTER The VFD display 1.
ENABLING / DISABLING OVER VOLTAGE PROTECTION The user can enable or disable the OVP circuit by pressing the "OVP ON/OFF (2)" key. When it is enabled the OVP enunciator is on. CV CC OVP OCP CV CC OVP OCP ° X
ENABLING / DISABLING OVER CURRENT PROTECTION To enable the over current protection circuit, press the "OCP ON/OFF (3)" key and the OCP enunciator is turned on. To disable the over current protection, press the "OCP ON/OFF (3)" key one more time and the enunciator is turned off. When the VFD displays “OVER CURRENT”, the over current protection circuit has been activated and the output is disabled. To reset, press the "OCP ON/OFF (3)" key and the enunciator will stop blinking.
UTILITY MENU Follow simply step below for Utility function. < OUTPUT OFF > 1. Metering menu 01 ° as shown, when turned the power switch “ON”. UTILITY PROFILE ° 2. Pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to select (LOAD or SAVE). Press ENTER key to accept the value then press CLEAR key to back to metering menu. a- Load Mode: Press ENTER then use key #6 as ( ) and #4 as ( ) to select profile location (0-3).
UTILITY EOS CODE ° 8. Press six times #6 key after pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to set EOS Code. (NONE / CR / LF / CR+LF). Press ENTER key to accept the EOS Code then press CLEAR key to back to metering menu. UTILITY LCD BACKLIGHT ° 9. Press seven times #6 key after pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to set LCD backlight. (Always / 5 min / Off).
c- CODE: Optional interfaces, such as Ethernet, can be enabled in the field using a code. Please contact an AMREL representative today. UTILITY PANEL LOCK ° 14. Press twelve times #6 key after pressed UTILITY to advance to then press ENTER. Use key #6 as ( ) and #4 as ( ) to select Panel Enable Mode or Panel Password Mode): a- Panel Enable Mode: Press ENTER then use key #6 as ( ) and #4 as ( ) to enable/disable (On/Off).
FRONT PANEL LOCK OPERATION This PD series power supply has the ability to lock the front panel when the power is turned OFF and turn back ON. See the front panel lock setting below: 1. 2. Presses UTILITY then use the “ ” key to scroll till “PANEL LOCK” and then press ENTER key. Use the “ ” key to select PANEL ENABLE or PANEL PASSWORD. Panel Enable: 1. Select PANEL ENABLE and press ENTER key. 2. Use the “ ” key to enable or disable (ON/OFF) the front panel keys. 3. Press ENTER key to accept your setting. 4.
STEPPING MODE Voltage/Current List Edit Mode. Voltage/Current step programming permits the user to program a sequence of different voltage outputs with its applied duration via front panel keypad. VLIST setting: 1. 2. 3. 4. 5. 6. 7. At metering menu; Press key# 4 (VLIST) to enter into the voltage list edit mode. Press “CHANNEL” key to select operation channel, if applicable. Use “ ” or “ ” to select list step. Press key# 7 (VOLT) to set the list voltage value at this step.
FRONT & REAR PANEL DESCRIPTION (PD-A > 600W Models) FRONT PANEL CONTROLS (PD-A > 600W Models) Use this Figure 5.4 to familiarize your self with this instrument. See next page for keypad definition. (1 in. = 25.4mm) 5 3 8 4 15 7 16 1 10 11 12 2 18 14 FIGURE 5.
FRONT PANEL KEYPAD DEFINITION (PD-A > 600W Models) VOLT CURR 7 8 VLIST ILIST RANGE 4 5 6 OUT ON/OFF OVP ON/OFF OCP ON/OFF 1 2 VLIST ON/OFF ILIST ON/OFF 0 x OV/TIME UTILIY 9 LOCAL 3 RELAY CHANNEL RESET CLEAR ENTER Most soft keys have dual functions. The first function is mode entry as described by VOLT, CURR right above the key. Once in a mode entry, use these keys as numeric keypad to enter the desired number.
RANGE 10. 10. 6 to scroll up to 100 current stepping value. Use #7 key to change current stepping value at that step. Use #9 key to change stepping time interval at that step. Numeric key for 5. High/Low range selection for constant current mode. This key also to scrolls menu. Numeric key for 6. OUT ON/OFF 1 Press this key to turn the output on or off. When the output is disabled, the LCD displays “--OUTPUT OFF--“. VSTEP ON/OFF 11. 14. Press this key to start and stop voltage stepping.
VFD STATUS ENUNCIATOR (PD-A > 600W Models) VACUUM FLUORESCENT DISPLAY: 1 8 2 3 4 CV CC OVP OCP °X --OUTPUT OFF-L [1] ^_ _ _ _ _ _ _ LCL 5 1 12 23 34 45 56 67 78 8 6 7 FIGURE 5.5 PDS (SCPI) SERIES : The VFD displays real time output Voltage/Current & mode status. These messages are viewed in either local or remote mode. VFD DESCRIPTION REFERS TO FIGURE 5.5 1. Indicator for (CV, CC, OVP, OCP). 2. CV : When this indicator is on, the unit is operating in a constant voltage mode. 3.
REAR PANEL CONNECTORS (PD-A > 600W Models) 6 5 7 10 9 4 2 1 3 12 11 8 FIGURE 5.6 POWER SUPPLY REAR PANEL REAR PANEL FEATURES 10. Positive DC Output Positive DC Output Connector. (Without relay control). 11. Negative DC Output Negative DC output connector. (Without relay control). 12. Positive Sense Positive sense connector. 13. Negative Sense Negative sense connector. 14. Sense Ground Sense ground connector. 15. GPIB Standard GPIB Interface Connector. 16.
LOCAL OPERATION (PD-A > 600W Models) INTRODUCTION These sections contain information on how to locally program the (PD-A <600W) Series. Upon powering up, the power supplies is in local mode operation. All front panel keys may be used to control the power supply. All operations performed in local mode, may also be performed in remote mode. The unit indicates remote operation when the “RMT” enunciator is on the display.
SETTING VOLTAGE To locally program the voltage (VSET), press "VOLT", enter the value and press "ENTER". For example, if one wished to set a voltage of 3.99, press: VOL 3 x 9 9 ENTER The VFD displays 3.99 V and the unit returns to metering mode. SETTING CURRENT To locally program the current (ISET), press "CURR" and enter the value and then press "ENTER". For example, if one wishes to set a current of 1.69 amps, press: CURR 6 1 x 9 ENTER The VFD display 1.
ENABLING / DISABLING OVER VOLTAGE PROTECTION The user can enable or disable the OVP circuit by pressing the "OVP ON/OFF (2)" key. When it is enabled the OVP enunciator is on. CV CC OVP OCP CV CC OVP OCP ° X --OUTPUT OF-° L [1] ^_ _ _ _ _ _ _ LCL 1 2 3 4 5 6 7 8 ° X -OVER VOLTAGE° L [1] P_ _ _ _ _ _ _ LCL 1 2 3 4 5 6 7 8 When the VFD displays “OVER VOLTAGE”, the over voltage protection circuit has been activated and the output is disabled. To reset, press the "CLEAR (RESET)" key.
ENABLING / DISABLING OVER CURRENT PROTECTION To enable the over current protection circuit, press the "OCP ON/OFF (3)" key and the OCP enunciator is turned on. To disable the over current protection, press the "OCP ON/OFF (3)" key one more time and the enunciator is turned off. When the VFD displays “OVER CURRENT”, the over current protection circuit has been activated and the output is disabled. To reset, press the "OCP ON/OFF (3)" key and the enunciator will stop blinking.
UTILITY MENU Follow simply step below for Utility function. 1. Main menu °X --OUTPUT OF-L [1] ^_ _ _ _ _ _ _ LCL as show when turned the power switch “ON”. X GPIB ADDRESS 5 < 2. Press UTILITY key to advance to use key #8 as up and #2 as down to change the GPIB address from 0 – 31 address. Press ENTER key to accept the value and press CLEAR key to back to main menu. X RS-232 SPEED 9600 bps < 3.
CONSTANT CURRENT RANGE SELECTION (IF APPLICABLE) The PDS features a two range of output operating for Constant Current Mode (CC). The user must select the PDS output range corresponding to the output source value, by pressing the key #6 locate at the front panel keypad, then the VFD module will display the operating range L / H.
REMOTE SENSE (PD-A & PD-E MODELS > 600W) In constant voltage mode (CV), the output is locally strapped for local sensing (normal operation); an unavoidable voltage drop is incurred in the load leads, which adds to its voltage regulation. By connecting the supply for remote sensing, as shown in Figure 5.7, voltage is sensed at the load rather than at the output terminals. This allows the supply to automatically compensate for voltage drops in the load leads and improve regulation.
FIGURE 5.8: REMOTE SENSE CONFIGURATION FOR OUTPUT CURRENT > 30ADC 1 2 3 4 5 6 +OUT +S X X -S -OUT Remote Sense DUT Note: Pin 1 & 2 and 5 & 6 are shorted when not using remote sense operation REMOTE SENSE CHARACTERISTICS (PD-A & PD-E MODELS > 600W) OUTPUT NOISE: Any noise picked up on the sense leads will appear at the supply's output and may adversely affect CV load regulation. Twist the sense leads to minimize External noise pickup and run them parallel and close to the load leads.
ISOLATION RELAY FUNCTION The AMREL PD-R has an internal output isolation relay function. The relay allows the user to reverse or disconnect the electronic load from the UUT either via the front panel keypad or the GPIB Interface Bus. Pressing the (RELAY) key will activate the relay menu. Enter “1” to close the Relay, “2” to reverse the output. Press Enter key to continue selection or clear to exit. * NOTE: It is recommended that the output be turned off before closing or reversing the relay.
* Follow the GPIB output subsystem command to operate relay and relay reversal. Pg. #. (RELAY DC OUTPUT): PIN 17 NORMAL: Pin A7 ----------------- (+) Output Pin A6 ----------------- (-) Output Pin 17 ------------------ (+) Sense Pin 16 ------------------ (-) Sense PIN 16 PIN A7 PIN A6 REVERSE: Pin A7 ----------------- (-) Output Pin A6 ----------------- (+) Output Pin 17 ------------------ (-) Sense Pin 16 ------------------ (+) Sense FIGURE 5.
SIX: REMOTE OPERATION INTRODUCTION AMREL PD series Power Supplies have GPIB, RS-232 and Ethernet (E-Option Only) interfaces for users to remotely operate. REMOTE INTERFACE FUNCTIONS The SCPI interface operations allow for constant talk and listen between systems. The PD-MC1 is able to act as both talker and listener. The computer is able to act as a talker, listener, and controller. LISTENER: TALKER: CONTROLLER: A device capable of accepting data over an interface.
GPIB CAPABILITIES OF THE POWER SUPPLY All Power Supply functions except for setting the GPIB address are programmable over the GPIB. GPIB Address The power supply operates from a GPIB address that is set from the front panel. To set the GPIB address, press the UTILITY (LOCAL) key on the front panel, choose “GPIB ADDRESS” and press ENTER key. Choose an address and press ENTER key. Press CLEAR key to go back to the previous option. The GPIB address is stored in non-volatile memory.
Baud Rate You can select one of the following baud rates from the front panel, which is stored in non-volatile memory: 2400 4800 9600 19200 38400 57600 115200 The default baud rate is set to 9600. RS-232 Returned String Format For non-query commands: OK + LF + CR; For queries: OK + LF + CR + returned value + LF + CR + OK + LF + CR. Note: Using RS-232 interface to get the voltage or current read back value, a minimum 50 milliseconds delay must be added to the application program.
Setting the Power Supply Ethernet Parameters You need to set the power supply Ethernet IP address first. The power supply IP address uniquely identifies the power supply to other devices on the network, and is required for the power supply to communicate over the network. 1. Ethernet Network settings: DHCP supported. The purpose of a DHCP (Dynamic Host Configuration Protocol) server is to issue an IP address to a network device that requests an address.
Using AMREL software tools to communicate with your power supply via Ethernet interface. American Reliance, Inc. provides free software tools for you to configure and communicate with your power supply. Please contact AMREL customer support for details. One of the most convenient tools for you to choose is AMREL eTool4-ConfigTool.
2) If Users’ local network supports DHCP server, users can just click “Yes” to configure all equipments to accept DHCP. Otherwise, just click “No” to ignore it. 3) The following panel then shows up for users to choose a unit to run. Users can select a unit from the instrument list and double click the row. The unit configuration panel then shows up for users to simply configure the unit.
3. Close the Program. 1) Click “Close IO”. 2) Click close program icon “ ” to exit the program.
ETHERNET RETURNED DATA STRING FORMAT (ETHERNET OPTION ONLY) For non-query commands: OK + ; For queries: OK + + returned value + + OK + . PROGRAMMING COMMAND SET FOR AMREL PD SERIES POWER SUPPLY Introduction This manual gives the syntax and parameters for all the programming commands used by AMREL PD series power supply, including the terms, symbols, and syntactical structures used here and gives an introduction to programming.
*TST? Performs self-test and returns test result SUBSYSTEM COMMANDS SYNTAX ABORt CALibrate :CURRent [:DATA] :LEVel :SAVe :OFFSet :PASSword [] :SAVe :SLOPe :STATe [] :VOLTage [:DATA] :LEVel :SAVe CHANnel :MODel? :SERial :VERSion? Resets the trigger system to idle state
OUTPut [:STATe] :PROTection :CLEar :RELay [:STATe] :POLarity STATus :OPERation [:EVENt]? :QUEStionable [:EVENt]? :ENABle SYSTem :BACK :BUZZer :CHANnel:MAXimum :CONSol :BAUD :EOS :DEFault:OUTPut :EOS :ERRor? :GPIB:EOS :NET :ADDRess :DHCP? :EOS :GATE :STATe? SUBNet :PROT :VERSion? :INH:STAT TRIGger [:STARt] [:IMMediate] :DELay VOLTage [:LEVel] [
NON-SCPI COMMANDS CURR:CAL:SAVE MOD? PROT:CHAN? SERI SYST:CHAN SYST:OFFSet SYST:SLOPe SYST:STATUS TRAC TRAC:CLE VOLT:CAL:SAVE Resaves current calibration data Returns model number Returns protected channel number Sets / Queries serial number Sets / Queries calibration offset value Sets / Queries calibration slope value Resaves voltage calibration data IEEE 488.
DESCRIPTION OF COMMON COMMANDS Common commands begin with an * and consist of three letters (command) or three letters and a “?” (query). They are defined by the IEEE 488.2 standard to perform common interface functions.
*: The OPC bit at the register cannot be set through *ESE command. It must use *OPC command. But the OPC bit can only be cleared by executing *ESE command. *ESR? Meaning and Type Event Status Register Device Status Description This query reads the Standard Event Status Event register. Reads the register and clears it. The bit configuration of this register is the same as the Standard Event Status Enable register (*ESE).
*OPC does not prevent processing of subsequent commands but Bit 0 will not be set until all pending operations are completed. Command Syntax Parameters Related Commands *OPC (None) *OPC? *ESE? *OPC? Meaning and Type Operation Complete Device Status Description This query causes the interface to place an ASCII "1" in the Output Queue when all pending operations are completed. Pending operations are as defined for the *OPC command. Unlike *OPC, *OPC? prevents processing of all subsequent commands.
Command Syntax Parameters Query Syntax Related Commands *RST [] * None or 1 – 31 (None) *SAV *: If this command is sent without a channel number, it resets all channels connected to the master controller. *SAV Meaning and Type Save Device State Description This command stores the present state of the power supply to a specified location in memory, and the profile settings. If a particular state is desired at power on, it should be stored in a profile number 0.
*STB? Meaning and Type Status Byte Device Status Description This query reads the Status Byte register, which contains the status summary bits. Reading the Status Byte register does not clear it. It is cleared at power on or by *CLS.
Bit Position Channel 31 NU 30 31 29 30 28 29 27 28 26 27 25 26 1) Example: If the returned string is “&H7FFFFFFE”, it means only channel 1 was connected and passed the self-test by converting the Hexadecimal value “7FFFFFFE” to binary value which is “0111 1111 1111 1111 1111 1111 1111 1110” and comparing the bit configuration with the above table to get the channel number.
CAL:CURR:LEV This command can only be used in the calibration mode. It sets the power supply to a current calibration point that is then entered with CAL:CURR[:DATA]. During calibration, three points must be entered and the low-end point (MIN) must be selected and entered first.
CAL:PASS This command sets calibration password. Command Syntax Parameters Example Query syntax Related commands CALibrate:PASSword [] [] : 1 – 31, channel number : character string for old calibration password. : character string for new password. CAL:PASS 1 12345 – sets calibration password as “12345”. CAL:PASS 1 12345 54321 – sets new calibration password as “54321” (None) CAL:STAT Note: The power supply unit default password is empty (no password).
CAL:STAT This command enables and disables the calibration mode. The calibration mode must be enabled before the power supply will accept any other calibration commands. Whenever the calibration mode is changed from enabled to disabled, any new calibration constants are lost unless they have been stored with CAL:SAVE.
CAL:VOLT:SAV This command reloads the voltage calibration constants to power supply. These constants are not stored in nonvolatile memory until saved with the *SAV commands.
CHAN:VERS? This query returns the power supply’s firmware version number for a specified channel. Query Syntax Parameters Examples Returned parameters Related Commands CHAN:VERS? : 1 –31, channel number CHAN:VERS? 1 represents firmware version number SYST:VERS? CURRENT SUBSYSTEM This subsystem programs the output current of the power supply. CURR This command directly programs the immediate current level of the power supply.
CURR:TRIG This command programs the pending current trigger level of the power supply. The pending current trigger level is a stored value that is transferred to the output terminals when a trigger occurs. A pending triggered level is unaffected by subsequent CURR commands and remains in effect until the trigger subsystem receives a trigger or an ABORt command is given. If there is no pending trigger level, then the query form returns the immediate current limit level.
LIST SUBSYSTEM This subsystem controls the generation of parameter lists that sequence the power supply output through values of voltage and current. Two subsystem commands specify lists of output voltages (LIST:VOLT), and currents (LIST:CURR), the time interval that each value (point) of a list is to remain in effect (LIST:VOLT:TIME and LIST:CURR:TIME), and the list step(LIST:VOLT:STEP and LIST:CURR:STEP).
LIST:CURR:STEP This command specifies how current list sequencing occurs in response to enabling current list state (LIST:CURR:STAT). If default step (NONE) or AUTO is sent, enabling list operation state causes the current list to sequence through all its points. The time that a list remains at each point is as specified in the dwell list. As soon as the dwell interval expires, the list moves to the next point.
LIST:VOLT:STAT This command enables or disables the output voltage list operation state. Command Syntax Parameters Examples Query Syntax Returned Parameters Related Commands LIST:VOLTage:STATe : 1 – 31, channel number : 0 | 1 | OFF | ON LIST:VOLT:STAT 1 ON; LIST:VOLT:STATE 2 OFF LIST:VOLTage:STATe? 0|1 LIST:VOLT:STEP LIST:VOLT:STEP This command specifies how voltage list sequencing occurs in response to enabling voltage list state (LIST:VOLT:STAT).
MEASUREMENT SUBSYSTEM The commands / queries in this subsystem wither return the current measured at the power supply output terminals or the voltage measured at the sense terminals, or set or query the measurement delay time. MEAS:CURR? This query returns the current measured at the power supply output terminals.
OUTPUT SUBSYSTEM This subsystem controls the power supply voltage and current outputs and the optional output relay. OUTP This command enables or disables the power supply output. The state of a disabled output is a condition of zero output voltage.
OUTP:REL:POL This command is valid only if the power supply is configured for the optional relay connector. Programming NORMal causes the relay output polarity to be the same as the power supply output. Programming REVerse causes the relay output polarity to be opposite to that of the power supply output. If OUTP[:STAT] = ON when either relay command is sent, the power supply output voltage is set to 0 during the time that the relays are changing polarity.
STAT:OPER? This query returns the value of the Status Operation Event register. The Event register is a read-only register, which holds (latches) all operation events that are set by users. Reading the Operation Event register does not clear it.
SYSTEM SUBSYSTEM The commands / queries in this subsystem include some millenniums system information, such as setting or querying the maximum number of channels for a controller, EOS mode, error code, and system version. SYST:BACK This command sets and queries the power supply LCD backlight mode.
SYST:CONS:BAUD This command sets and queries the RS-232 interface baud rate setting. Command Syntax Parameters Example Query syntax Returned Parameters Related Commands SYSTem:CONSol:BAUD : RS-232 baud rate value SYST:CONS:BAUD 115200 SYSTem:CONSol:BAUD? : Represented the baud rate value None SYST:CONS:EOS This command sets and queries the RS-232 interface EOS mode.
SYST:ERR? This query returns the next error message response string from the remote programming error queue. The queue is a FIFO (first-in, first-out) buffer that stores maximum 9 errors as they occur. As it is read, each error is removed from the queue. When all errors have been read, the query returns 255-255-0.
SYST:NET:EOS This command sets and queries the Ethernet interface EOS mode. Command Syntax Parameters Example Query syntax Returned Parameters Related Commands SYSTem:NET:EOS : 0 – None 1 – CR 2 – LF 3 – CR + LF SYST:NET:EOS 1 SYSTem:NET:EOS? : Represents EOS mode SYST:EOS SYST:NET:GATE This command sets and queries the Ethernet default gateway IP address.
SYST:PROT? This query can only be used after SRQ is properly set. It reads the Protect Event Status register, which contains channel number where protection has occurred. A 1 in any Protect Event Status register bit position indicates that the protected channel number is the bit position plus 1.
TRIGGER SUBSYSTEM This subsystem controls the triggering of the power supply. TRIG This command initiates a pending level change as specified by CURR[:LEV]:TRIG or VOLT[:LEV]:TRIG and clears the WTG bit in the Status Operation Condition register.
VOLT SUBSYSTEM This subsystem programs the output voltage of the power supply. VOLT This command directly programs the immediate voltage level of the power supply. The immediate level is the voltage applied at the output terminals. Command Syntax Parameters Default Suffix *RST Value Examples Query Syntax Returned Parameters Related Commands VOLTage[:LEVel] : 1 – 31, channel number : minimum to maximum voltage value of the channel V 5.0 VOLT 1 0.500; VOLT:LEV 1 30.
VOLT:PROT:STAT This command enables or disables the power supply over-voltage (OV) protection function. If the overvoltage protection function is enabled and the output voltage exceeds the OVP level, then the output is disabled and the Questionable Condition status register (STAT:QUES?) OV bit is set. An over-voltage status can be cleared with the OUTP:PROT:CLE, VOLT:PROT:CLE or *RST command.
SYST:CHAN This command sets the current active channel. Command Syntax Parameters Example Query Syntax Returned Parameters SYST:CHAN Channel number: 1 – 31 SYST:CHAN 2 (sets channel 2 as current active channel) SYST:CHAN? : Representing current active channel. SYST:STATUS? This query reads the value from status register.
IEEE 488.1 COMMANDS AND THEIR EQUIVALENT SCPI COMMANDS In order to comply with AMREL old PD IEEE 488.1 firmware option, some IEEE 488.1 commands are still supported in this version. However, each IEEE 488.1 command has an equivalent SCPI command. The following table shows the corresponding SCPI command for each IEEE 488.1 command. IEEE 488.
STATUS REPORTING SCPI GPIB Command Status Reporting The following figure shows the SCPI GPIB command status model of the power supply.
SCPI GPIB COMMAND STATUS MODEL The above figure shows the status register structure of the power supply. The Standard Event, Status Byte, and Service Request Enable registers perform standard GPIB functions. The Operation Status, Questionable Status, and Protection Event Status registers implement status functions specific to the power supplies. Bit configuration for each register is also shown in the above figure.
Protection Event Status register Protection Event Status register stores the channel number where a service request is occurred if it is caused by the Questionable Data (QD) bit of the Status Byte register. Use “SYST:PROT?” query to read it but not clear it. It is cleared only after the specific condition that caused the event is removed. Non-SCPI Command Status Reporting * A status register is used for Non-SCPI command status reporting.
COMMAND INDEX AND ERROR CODE FOR “SYST:ERR?” QUERY Command index for SYST:ERR? query: *RST *CLR VOLT:PROT:CLE CURR:PROT:CLE OUTP:PROT:CLE CAL:STAT VOLT:PROT:STAT CURR:PROT:STAT OUTP OUTP:REL OUTP:REL:POL LIST:VOLT:STEP LIST:CURR:STEP LIST:VOLT:STAT LIST:CURR:STAT *SAV UND:PROT:STAT SHUT:DOWN VOLT(VSET) VOLT:TRIG CURR(ISET) CURR:TRIG VOLT:PROT(:LEV) TRIG:DEL LIST:COUN 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 17 19 20 21 22 23 24 25 31 SERI *VRF LIST:CURR LIST:CURR:TIME LIST:VOLT LIS:VOLT:TIME CAL:SAVE CURR:CA
SEVEN: CALIBRATION INTRODUCTION WARNING 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 40V. Filter capacitors store potentially dangerous energy for some time after power is removed.
CALIBRATION CONFIGURATION You will need the following equipment when calibrating your power supply: x x 5 ½ digit true RMS voltmeter (DMM) (+0.05% accuracy) with test leads Current shunt 0.01 or 0.001 ohm and connecting wire. If your product requires calibration and need calibration kit, please contact our sales department at 1-800-6549838 for more detail information.
LOCAL CALIBRATION (ENCODER & ETHERNET OPTION ONLY) The following steps describe the calibration procedure of the supply via front panel keypads in local mode. CAUTION In these procedures, voltages and currents may exceed full-scale value. Take all necessary precautions. STEPS: 1. 2. 3. 4. 5. Disconnect all loads from the supply. Strap the supply for local sensing. Connect the DMM to the +S and -S rear terminals as in figure 5.1 for CV calibration and figure 5.2 for CC calibration.
LOCAL CALIBRATION (IEEE-488.2 OPTION ONLY) The following steps describe the calibration procedure of the supply via front panel keypads in local mode. CAUTION In these procedures, voltages and currents may exceed full-scale value. Take all necessary precautions. STEPS: 1. 2. 3. 4. 5. Disconnect all loads from the supply. Strap the supply for local sensing. Connect the DMM to the +S and -S rear terminals as in figure 5.1 for CV calibration and figure 5.2 for CC calibration. Turn on the power supply.
CALIBRATION CURRENT Disconnect the voltmeter, Connect Current Shunt (0.01ohm) and Current meter or DMM direct to the power supply as shown in Figure 5.2. Then press key number 8. : Reading the Current meter value at Low point and calculate the current value by applying the formula: ( I = V/R ). Example: DMM meter value reads V = 18.091mV and the Current Shunt used 0.01ohm = R. R is varied by different current shunt’s value used. I = 18.091mV / 0.01ohm = 1809.1mA I = 1.
REMOTE CALIBRATION The PD Series can be calibrated via computer commands. Therefore, it is not necessary to remove the power supply from the system. Please follow the following procedures to do calibration remotely. CV MODE calibration: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. CAL:STAT ON – enables the calibration mode CAL:VOLT:LEV MIN – power supply sends a low voltage to output. Read voltage value from DMM and send this value to the power supply.
CC MODE LOW RANGE Calibration (OPTIONAL) 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. CURR 0.5 - set current less than low range max value (1 Amp) CURR:RANGE 0 – change to low range current function. CAL:STAT 2 – enables the calibration mode CAL:CURR:LEV MIN – power supply sends a low voltage to output. Read voltage value from DMM. Divide value (volts) by the current shunt resistance (ohms) to obtain calculated current value.
APPENDIX A: EXTERNAL ANALOG PROGRAMMING The voltage and current outputs of the PD series can be programmed by an external analog voltage. The outputs are linearly proportioned to an external input voltage from 0 to 10 volts. The external analog programming mode is activated by setting these parameters via the front panel or GPIB bus, VSET to 0V, ISET to a proper value for CV operation, or setting ISET to 0A and VSET to a proper value for CC operation.
