Download
Share
Print this page
  1. Manuals
  2. Brands
  3. Amrel Manuals
  4. Power Supply
  5. ePower PPS Series
  6. Operation manual

Amrel ePower PPS Series Operation Manual

Programmable dc power supplies
Hide thumbs

Advertisement

Quick Links

Download this manual
OPERATION MANUAL
Date: 11/08/12
Revision: 5
This manual covers:
PPS Series Programmable DC Power Supplies
www.valuetronics.com

Advertisement

loading
Need help?

Need help?

Do you have a question about the ePower PPS Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Amrel ePower PPS Series

Summary of Contents for Amrel ePower PPS Series

  • Page 1 OPERATION MANUAL Date: 11/08/12 Revision: 5 This manual covers: PPS Series Programmable DC Power Supplies www.valuetronics.com...
  • Page 2 ONE: INTRODUCTION Congratulations! You have just purchased one of the most advanced professional Programmable Power Supplies available. The innovative ergonomic design and overall high quality will provide years of reliable operation. Therefore, it is very important to completely familiarize yourself with the unit before attempting use. Please read this manual carefully, paying particular attention to the Warning and Caution sections.
  • Page 3 6. Exercise extreme caution when cables are over four feet in length. 7. Turns off AC power (or disable unit) before disconnecting load or floating voltages. 8. Operates the power supply with properly rated wire sizes. LOCATION AND COOLING 1. The proper operating temperature for the power supply are from 0°C to 50°C. The unit ventilates by drawing air through the sides and exhausting it through the rear.
  • Page 4 TWO: GETTING STARTED UNIT FAMILIARIZATION Use the following illustrations of the power supplies in conjunction with the descriptions to familiarize yourself with the unit. Front Panel: Figure A, B, C, D 30.00V 0.000A High OUTPUT é é BEEP SELECT ç ç...
  • Page 5 PROGRAMABLE DC POWER SUPPLY FUNCTI ON/ DATA ENTRY 1. 002V 0. 000A é é BEEP SELECT ç ç ê ê è è UTI LI TY ENTER Figure C. Front Panel of PPS-1322/1302A PROGRAMABLE DC POWER SUPPLY FUNCTI ON/ DATA ENTRY OCP1 1.
  • Page 6 2.1.1 FRONT PANEL KEYS NOTE: Most soft keys have two functions. The first function of the keys is function entry (i.e. VSET, ISET, OCP etc.). The second function for the soft keys is numeric data entry (i.e. 0-9). 1. LCD Display Displays alphanumeric information with status annunciators.
  • Page 7 18. BEEP (3) Activates the audible indicator on or off. Numeric entry key for number three. ç (0) This key moves the cursor one digit left until it comes to the desired digit to be varied. Numeric entry key for "0". ê...
  • Page 8 OUTPUT OUTPUT channel 1 channel 2 Figure E -2. Rear Panel of PPS-2322 Figure E -3. Rear Panel of PPS-1322/1302A/1326 www.valuetronics.com...
  • Page 9 2.1.2 REAR PANEL 24. Ventilation ports - Exhausts warm air from the unit. 25. GPIB Interface - 24 pin parallel GPIB interface connector. - Selects voltage of either 115VAC or 230(240)VAC, -10% ∼ +10%, 50/60Hz. 26. Voltage Selector 27. Fuseholder - Fuseholder for AC line.
  • Page 10 30.00V 0.000A Figure F -2. LCD of PPS-1322/1302A/1603/10710 30.00V 0.000A High Figure F -3. LCD of PPS-1326 <NOTE:> The LCD displays real time output Voltage/Current & mode status.There are no status indicators for CV mode. These messages are viewed in either local or remote mode. Channel 1 is operating under constant current mode.
  • Page 11 OUTPUT TERMINALS AND WIRES All models have terminal blocks on the rear panel which include positive and negative outputs, positive and negative remote sense outputs, and earth ground. <NOTE:> The power supply is set at the factory for local sense operation (i.e. the +S and -S terminals are strapped to the "+"...
  • Page 12 THREE: OPERATING CHARACTERISTICS AND CONFIGURATIONS INTRODUCTION These sections contain information on operating characteristics and how to configure the PPS Series. Sections 3.2 through 3.4 consider the power supplies operating ranges, remote sense operation and considerations when connecting loads. The latter half of the chapter deals with connecting power supplies in parallel and series configuration for CC and CV operation.
  • Page 13 REMOTE SENSE When the supply is locally strapped for local sensing (normal operation), an unavoidable voltage drop is incurred in the load leads and this adds to its voltage regulation. By connecting the supply for voltage remote sensing, as shown in figure G, voltage is sensed at the load rather than at the output terminals. This allows the supply to automatically compensate for voltage drop in the load leads and improve regulation.
  • Page 14 STABILITY: When the supply is connected for remote sensing, it is possible for the impedance of the load wires and the capacitance of the load to form a filter, which will become part of the supply's CV feedback loop. The extra phase shift created by this filter can degrade the supply's stability and can result in poor transient response performance.
  • Page 15 2. For models with maximum output voltage below 60 Volts, Capacitance should not exceed 3000uF. <NOTE:> If load capacitance approaches these limits, it is recommended to not intentionally activate the OVP circuit and discharge the capacitance through the SCR crowbar as part of standard testing procedure.
  • Page 16 As an example of this operation, let's assume in figure H. that output channel two operates in CC mode and output channel one operates in CV mode. Perform the following steps: 1. Set output channel two to the maximum output voltage of desired range. 2.
  • Page 17 SERIES CONNECTION OPERATION <NOTE:> Power supplies equipped with SCR crowbars should not be used in series or parallel with each other unless a master-slave interconnection is employed and their crowbars interlock. Greater output voltage capability can be obtained by connecting outputs in series. A note of caution, since current is the same in each element of a series circuit, both outputs need identical rated currents.
  • Page 18 3.6.3 REMOTE SENSE CONFIGURATION (Series Connection Mode) The following figure K illustrates the configuration for Remote Sensing in Series Operation. OUTPUT OUTPUT channel 1 channel 2 Figure K. Series Configuration with Remote Sense www.valuetronics.com...
  • Page 19 External Analog Programming (PPS-1603/10710) The voltage and current outputs of the PPS 1603/10710 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.
  • Page 20 FOUR: LOCAL OPERATION INTRODUCTION These sections contain information on how to locally program the PPS Series. Upon powering up, the power supplies default to local mode operation. All front panel keys may be used to control the power supply. <NOTES:> The PPS series power supply models and their operations are essentially identical.
  • Page 21 VSET description: For all models, VSET can be altered by pressing " " or " " key instead of "VSET" and entry keys. When the power supply is in the CV mode, pressing " " key will increase output voltage per step. The increment step is determined by either pressing the "ç...
  • Page 22 SETTING THE PROTECTION MODES The power supplies have overvoltage protection (OVP) and overcurrent protection (OCP) features to guard against abnormal operating conditions. When either of these two functions are activated, the unit disables the output. The LCD annunciator will indicate the condition and an audible signal will sound. 4.5.1 SETTING THE OVERVOLTAGE THRESHOLD To locally program the threshold voltage press "OVSET", enter the value and press "ENTER".
  • Page 23 The output is enabled or disabled by pressing the "OUTPUT (ON/OFF)" key. The PPS-2322 output is enabled or disabled by selecting the channel/s and pressing the "OUTPUT (ON/OFF)" key. TRACKING OPERATION (PPS-2322) The PPS-2322 has the ability of tracking since it has two outputs. When the tracking mode is enabled, the annunciator "RMT"...
  • Page 24 FIVE: REMOTE OPERATION The programmable Power Supply Series from American Reliance are compatible with ANSI/IEEE 488.1. This is the "Standard Digital Interface for Programmable Instrumentation". This standard provides a means for an electrical and mechanical system to interconnect electronic measurement devices. Several key specifications of IEEE 488.1 are: •...
  • Page 25 GPIB OPERATION The GPIB (General Purpose Interface Bus) operation allows for constant talk and listen between systems. The PPS series are able to act as both talkers and listeners. The computer is able to act as a talker, listener, and controller. LISTENER: A device capable of accepting data over an interface.
  • Page 26 GPIB DEVICE COMMANDS LIST: PPS-1322/1302A PPS-1326 PPS-1603/10710 PPS-2322 Type Input/Output Command CALCHNL [0,1] [0,1] [0,1] [0,3] Input [0,1] [0,1] [0,1] [0,1] Input [0,1] [0,1] [0,1] Input OUT1 [0,1] Input OUT2 [0,1] Input RANGE [0,1] Input TRACK [0,1] Input [0,1] [0,1] [0,1] [0,1] Input...
  • Page 27 CALIBRATION COMMANDS: PPS-1322/1302A PPS-1326 PPS-1603/10710 PPS-2322 Type Input/Output Command VOFF Input Input IOFF Input Input IHIFS Input ILOFS Input NOTE: 1. Types of data entry: I: Integer R: Real A: ASCII code 2. Types of input/output: INPUT: Input to the PPS OUTPUT: Output to the PPS 3.
  • Page 28 An explanation of these bytes/bits is as follows: b6 (Byte 0) - Signifies the low range (0) or high range (1) applicable to the PPS-1326. b6 (Byte 1) - Signifies whether or not the PPS-2322 are in tracking mode. b5 - Signifies which mode the power supply is operating in, constant current or constant voltage.
  • Page 29 INITIAL DEFAULT SETTINGS OF PPS: COMMAND PPS-1322/1302A PPS-1326 PPS-1603/10710 PPS-2322 OUT1 OUT2 VSET ISET 0.0140 0.0140/0.0140 0.0140 OVSET maximum maximum maximum VSET1 VSET2 ISET1 0.0140 ISET2 0.0140 OVSET1 maximum OVSET2 maximum ADDRESS 5.5.1 OUTPUT ON/OFF All power supplies have their outputs off upon powering up. The command "OUT" is to enable/disable the outputs. To enable the power supply, designate the channel (PPS-2322 only) and condition (1 = on;...
  • Page 30 Once again, the power supply should be addressed to talk and the results displayed (i.e. shown on CRT, printed, or saved). The PPS-2322 have two outputs, please refer to the programming syntax commands for proper nomenclature of commands. 5.5.3 OVERVOLTAGE PROGRAMMING (OVSET) In order to protect loads against excessive voltages, an overvoltage protection circuit (SCR crowbar) has been added.
  • Page 31 5.5.5 OVERCURRENT PROTECTION (OCP) The overcurrent programming feature protects the load from excessive output currents. The OCP mode cannot be used while the power supply is operating in CC mode, since OCP would disable the output. The OCP command is enabled by a logic "1" and disabled by a logic "0". For example, to enable a channel for overcurrent protection.
  • Page 32 [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.
  • Page 33 OBTAINING DATA: The steps involved in obtaining data from the power supply follow a similar formats as in sending data. However, additional commands (Enter and Print) are necessary to view the data. For example, to query the programmed voltage of the previous example, send: OUTPUT 512;...
  • Page 34 SIX: CALIBRATION INTRODUCTION This addendum describes calibration procedures for the AMREL Programmable DC Power Supply. The supply is calibrated either through local or remote control. The following information provides calibration procedures in local mode. NO hardware adjustment is necessary since all calibration is accomplished by software. The software sends calibration constants to the supply via the front panel keys.
  • Page 35 PRECISION SHUNT RESISTOR Figure N. Current Calibration Configuration LOCAL CALIBRATION 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.
  • Page 36 Enter in the " V Hi = " value to the power supply by the front panel keys and press "ENTER" once. For example, if the full scale is 14.369 V as measured by the DMM, press: • ENTER The voltage calibration is now complete! CURRENT CALIBRATION: When the voltage calibration is complete, connect the voltmeter to the Presicion Shunt Resistor as in figure N.
  • Page 37 SEVEN: USER MAINTENANCE/SERVICE 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 perform the following steps: Disconnect the AC line cord from the unit to reduce electrical shock hazard. Remove the fuse by sliding out the fuse holder.
  • Page 38 WARRANTY INFORMATION 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. If any defect is discovered within the warranty period, American Reliance will repair or replace the unit, subject to verification of the defect or malfunction, upon delivery or prepaid shipment to American Reliance.
  • Page 39 NON-WARRANTY SERVICE Any American Reliance out-of-warranty instrument that is thought to be defective, but is repairable, may be sent in for non-warranty service. Please contact our service department at (818) 303-6688 for current repair charges. The instrument should be returned to American Reliance, please follow the directions under the heading "Shipping Instructions"...
  • Page 40 APPENDIX A: SPECIFICATIONS The following lists the performance specifications for the American Reliance Inc., Linear Programmable DC Power Supply Series. All specifications are at rear terminals with a resistive load, and local sensing unless otherwise stated. All specifications apply over the full operating temperature range of 0 to 50°C, unless otherwise specified.
  • Page 41 APPENDIX A: SPECIFICATIONS (continued) MODEL PPS-1322 PPS-1302A PPS-2322 PPS-1326 PPS-10710 PPS-1603 Maximum output change for a line voltage change within rating. SOURCE EFFECT Voltage Current PARD (PERIODIC AND RANDOM DEVIATION AND NOISE) RMS/PK-PK (20Hz - 20MHz) with output ungrounded. Voltage 1mVrms/10mVp-p 1mVrms/10mVp-p 1mVrms/10mVp-p...
  • Page 42 COMMAND DEFINITION ADDRESS Sets the address of the PPS CALCHNL Turns the calibration mode on or off. Sets the fullscale current for calibration. IHIFS Sets the high fullscale current for calibration (PPS- 1326 series only). ILOFS Sets the low fullscale currentfor calibration (PPS- 1326 series only).
  • Page 43 APPENDIX B: COMMAND SUMMARIES CONTINUED (QUERIES) COMMAND DEFINITION ERROR? Queries for command or numeric errors IOUT? Queries the current output. IOUT1? Qreries the current output of channel one (PPS-2322 series only). IOUT2? Qreries the current output of channel two (PPS-2322 series only). ISET? Queries the set current output.
  • Page 44 APPENDIX 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 ERROR 5 ERROR 6 www.valuetronics.com...
  • Page 45 APPENDIX D: CALIBRATION PROGRAM EXAMPLE The following is a software calibration program written 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 (AT-GPIB). The shunt resistor used for local calibration may be utilized in remote calibration.

This manual is also suitable for:

Epower sps80-41Epower pps-4aEpower pps-1322Epower pps-10710Epower pps-2322Epower pps-1326