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1、Programmable Power SuppliesI 4822 872 00824 January 1997, Rev. 3, 5/98 1997 Fluke Corporation. All rights reserved. Printed in the Netherlands. All product names are trademarks of their respective companies. PM2811-PM2812-PM2813 PM2831-PM2832 Users Manual Programmable Power Supplies RadioFans.CN 收音机
2、爱 好者资料库 IIUsers Manual RadioFans.CN 收音机爱 好者资料库 Programmable Power SuppliesIII LIMITED WARRANTY therefore, sense directly at the most sensitive load. - S- V+ V+ S load 1load 2 + - S- V+ V+ S load 1load 2 + + CORRECT: Parallel connection of loads + WRONG: Series connection of loads Installation Instru
3、ctions3 - 1 3 INSTALLATION INSTRUCTIONS 3.1INTRODUCTION This section contains instructions for the following: inspecting the contents of the shipment for completeness and/or damage during transport (initial inspection) ensuring the safety of the operator installing the power supply making the input
4、and output connections performing the installation acceptance checks 3.2INITIAL INSPECTION Inspect the contents of the shipment for completeness and note whether any damage has occurred during transport. If the contents are not complete, or if there is damage, inform your FLUKE Sales and Service Cen
5、ter so that repair or replacement of the instrument can be arranged. Pay special attention to the following parts : accessories to be supplied (refer to Appendix A). front panel keys and display. rear panel connectors and terminal blocks. cabinet surfaces. The shipment must contain one power supply
6、plus the accessories supplied. For a complete list of accessories supplied, refer to the INITIAL INSPECTION page in the front of this manual. 3.3OPERATOR SAFETY INSTRUCTIONS The instrument has been designed and tested in accordance with IEC Publication 1010 for Class 1 instruments and has been suppl
7、ied in a safe condition. This Operation Manual contains WARNING and CAUTION statements, that must be followed by the user to ensure safe operation and to keep the instrument in a safe condition. 3 - 2Users Manual The instrument described in this manual is to be used by properly trained personnel. Do
8、 not remove the cover or perform any adjustment, maintenance, or repair unless you are qualified to do so and are aware of the hazards involved. SymbolBefore connecting the instrument to line power, ensure that the power ground is functioning correctly. Before any other connection is made, the instr
9、ument must be connected to the earth (ground) conductor via the three-conductor power cord. The power plug must be inserted into a socket outlet provided with ground contact. The grounding protection must not be defeated by use of an extension cord without a ground conductor. WARNING :Any interrupti
10、on of the protective conductor inside or outside the instrument or disconnection of the protective ground terminal is likely to make the instrument dangerous. Intentional interruption is prohibited. The instrument is shipped from the factory with a power cord that has a plug appropriate for the coun
11、try in which it is sold. If a different power plug or power cord is required, contact your Fluke Sales and Service Center. CAUTION: When an instrument is brought from a cold into a warm environment, condensation may cause a hazardous condition; therefore, make sure that the grounding requirements ar
12、e strictly adhered to. 3.4INSTALLATION 3.4.1Mechanical installation The instrument is fan cooled and must be installed in a location that allows sufficient space at the three important sides: rear, left, and right. Each side must have a space of at least 1 inch (25 mm). The fan, located at the rear,
13、 cools the instrument by drawing air into the openings at the rear and exhausting it through openings on the sides. Each instrument output channel has its own fan. Installation Instructions3 - 3 3.4.2Electrical installation Pre-installation checks: Read Chapter 1 OPERATOR SAFETY before making any co
14、nnections. Before inserting the power plug into the power supply, ensure that the ground conductor is functioning correctly. Check that this instrument is suitable for the local situation as indicated on the model number plate (sticker) on the rear panel. NOTE : If the instrument must be wired to co
15、nform to local power, contact your FLUKE Sales and Service Center to have it modified. The power inlet module, located at the rear, is an integral power adapter and includes the power input socket, the holder for the two power fuses and the POWER ON/OFF (1/0) switch. The two power fuses are located
16、behind the flap next to the power input socket. WARNING:When a fuse must be replaced, the instrument must be turned off and disconnected from the power. Refer to Chapter 2 in the Reference Manual. 3 - 4Users Manual 3.4.3Front Connection Unit Introduction This section describes the use and capabiliti
17、es of the Front Connection Unit, mounted underneath the power supply. The Front Connection Unit provides the interconnections between the rear and front terminals. The following programmable power supply types have a front connection unit: single output model: PM2811/x5z dual output model : PM2812/x
18、5z triple output model : PM2813/x5z single output model: PM2831/x5z dual output model : PM2832/x5z x = Number assigned to various output ratings z = Country version Basic operation Every output channel has been provided with four output terminals, a ground terminal, and a SENSE switch. FOUR OUTPUT T
19、ERMINALS The inner 2 banana sockets are for the power output, i.e., +V and -V. The outer 2 banana sockets are for the sense input, i.e., +S and -S. ONE GROUND TERMINAL The ground (earth)terminal has been connected to the housing for grounding and shielding purposes. ONE SENSE SWITCH This switch enab
20、les you to select local or remote sensing. Note:Switching from remote to local or from local to remote may cause a sense break detection. To avoid this, it is advised to switch modes only at power off. Electrical properties The maximum voltage between any terminal and ground: 240 V The maximum curre
21、nt through an output terminal:15 A The maximum current that may be switched:4 A Installation Instructions3 - 5 Local sensing The SENSE switch is in LOCAL position if S1 is closed. CAUTION: Do not connect a load to the sense terminals +S and -S, because the maximum current through the switch is limit
22、ed to 4 A. Currents exceeding this limit will damage the switch. Also make sure that the sense wires (used for remote sensing) are disconnected from the sense terminals to prevent current through the sense switches. Remote sensing The SENSE switch is in REMOTE position if S1 is open. The sense termi
23、nals must be connected to the load. Load +S +V -V -S S1 S1 Load +S +V -V -S S1 S1 3 - 6Users Manual Half size model Full size model Installation Instructions3 - 7 3.5OUTPUT CONNECTIONS This section describes the following output connections: output channel terminals GPIB connector trigger bus SMB co
24、nnectors 3.5.1Output channel connections The number of the output channels of the various power supplies is indicated in the last figure of the model number (single, dual or triple). Every output channel connector is identical and consists of four terminals, i.e., two Voltage output terminals and tw
25、o sense input terminals. A load can be connected in one of the following ways: to the + and - voltage terminals (local sensing) to the + and - voltage and sense terminals (remote sensing) WARNING:To prevent SHOCK HAZARD, turn off the power before making rear output channel connections. All wires and
26、 straps must be properly insulated, and connected with terminal block screws securely tightened. Before any connection can be made, the plastic terminal block cover must be unscrewed and removed. When the connections have been made, the plastic terminal block cover must be reinstalled again. = PM281
27、1 and PM2831 (single) = PM2812 and PM2832 (dual) = PM2813 (triple) OUTPUTOUTPUTOUTPUT CHANNEL 1CHANNEL 2CHANNEL 3 - S- V+ V+ S load - S- V+ V+ S load (local sensing)(remote sensing) 3 - 8Users Manual 3.5.2GPIB connections The GPIB (General Purpose Interface Bus) is identical to the IEC 625 or IEEE 4
28、88 interface bus. At the rear you will find a 24-pin female connector in which the connector pinning assignment is in accordance with IEEE 488.2 - 1987. An IEEE cable connects your power supply via an IEEE interface board to a controller. 3.5.3Trigger bus connections There are three SMB connectors a
29、t the rear: START, STEP, and READY. The modes and functions of the connectors are shown in the following table. The trigger bus connectors can be used to recall output channel settings from the recall memory. For more information, refer to section 5.5.5 Step functions. Figure 3.4 IEEE 488/IEC 625 Co
30、nnections SHIELD ATN SRQ IFC NDAC NR FD DAVDIO4DIO2 EO1DIO3 DIO1 GND 11 GND 9 GND 7 RENDIO7DIO5 LOGIC GND GND 10 GND 8 GND 6 DIO8 DIO6 ST6064 12 24 1 13 NAMEMODEFUNCTION STARTinputEnables stepping via the STEP input. STEPinputExecutes the next step. READYoutputIndicates whether a step is finished (r
31、eady for the next step). Installation Instructions3 - 9 3.6ACCEPTANCE TESTS The acceptance tests give information about the correct operation of the instrument after installation. The interface test must be performed when using the programmable power supply for remote operation via the Controller/GP
32、IB interface. 3.6.1Brief check After turning on your power supply, the following self tests on the hardware parts will be performed automatically: ROM test RAM test GPIB controller test Microprocessor timer test Communication (D2B) test Display controller test ADDA output channel(s) test The tests w
33、ill not show up on the display unless an error is detected. In the case of a hardware error, the following text + error code is displayed: ERROR n:dddn=Indication of the error source. ddd =Summation of the decimal values of the individual errors. The following error codes are possible: n = 0: Main C
34、PU error DECIMALERROR DESCRIPTION 128Display controller failure. 64Bank switch failure. 32Not used. 16D2B failure. 8IEEE controller failure. 4Processor timer failure. 2RAM failure. 1ROM failure. 3 - 10Users Manual If the display is correct, character # will be displayed on the 16 character positions
35、. Also the text (ENABLED 1 2 3 4 5 6 7REM SRQ) will be displayed for 1 second. Next, the text INITIALIZING will be displayed for 1 second. If the mode after power on is OPERATE, the readback voltage and current will be displayed if the output is not DISABLED. If not in OPERATE mode, the display show
36、s STANDBY. If a failure occurs during one of the tests, inform your FLUKE Sales and Service Center so that repair or replacement of the instrument can be arranged. These tests take a few seconds to run. The instrument will be ready for use when the message STANDBY or the readback voltage and current
37、 appears on the display. n = 1, 2, or 3: CPU error of output channel 1, 2, or 3 DECIMALERROR DESCRIPTION 128Not used. 64ROM checksum error. 32Configuration checksum error. 16Calibration checksum error. 8Checksum error of the default settings. 4Processor timer failure. 2Not used. 1Output channel not
38、responding. t t t t t t # ENABLED 1 2 3REMSRQtttttt # 4 5 6 7 # Installation Instructions3 - 11 3.6.2Interface check To perform the GPIB interface check, the power supply must be connected to the controller via the GPIB; therefore, you need a GPIB interface card + software GPIB drivers + a programmi
39、ng language. The various parts of the following interface check must be executed sequentially. Your power supply goes into the remote state when the first command is sent via the GPIB. However, the results of programmed commands can still be monitored on the display, e.g., the readback voltage and c
40、urrent. Also the text REM will be displayed in the remote state. The interface check consists of the following parts: Check the GPIB address setting under the AUX menu. send *IDN? Identification query read PHILIPS,PM28nn/xy,0,Va.b Notes:nn = 11, 12, 13, 31 or 32 x is the model indication y is the ha
41、rdware version a.b = the firmware version send *TST?Read result of power on test. read IF = 0 THEN test result is correct ELSE display controller failure send :TEST:SYSTEM?Selftest power supply query. read IF = 0 THEN test result is correct ELSE the = hardware error number send :INST:NSEL 1Select ou
42、tput channel 1 (only for multiple output models). send :TEST:INSTRUMENT?Selftest of the output channel 1. read IF = 0 THEN test result is correct ELSE the = hardware error number Repeat this check for all available output channels. Note:For meaning of the hardware error numbers, refer to section 3.6
43、.1 Brief check or to Error Messages in the Reference Manual. 3 - 12Users Manual The following check can be executed for all available output channels. A choice has been made for output channel 1 of a multiple output model. For single output models, the output channel does not have to be selected and
44、 the channel indication will not be displayed. Use the SELECT key to select the output channel to be displayed (only for multiple output models). send :INST:NSEL 1Select output channel 1. send :OUTP:STAT ONEnable selected output channel. Read on the display: send :INST:STAT ONSet power supply in OPE
45、RATE mode. Read on the display: Note:The channel indication (n) and the text ENABLED n will be displayed only on multiple output models. If a failure occurs during one of the GPIB interface tests, inform your FLUKE Sales and Service Center so that repair or replacement of the instrument can be arran
46、ged. 3.6.3Performance Verification If the brief check (section 3.6.1) and the interface check (section 3.6.2) pass successfully without error messages, you may carry out a performance check before starting to use the power supply. Appendix B in the Reference Manual gives a complete and simple proced
47、ure to verify the performance of your power supply. 1S T A N D B Y ENABLED 1REM 1x x . x x V ENABLED 1 y y . y y A REM Getting Familair with the Power Supply4 - 1 4 GETTING FAMILIAR WITH THE POWER SUPPLY This chapter will help the user new to programmable power supplies. 4.1INITIAL SETUP OF YOUR POW
48、ER SUPPLY 4.1.1Power up routine WARNING:Before you turn on your power supply, make sure that the power input voltage matches the power voltage specifications on the decal on the rear of your power supply. Refer to section 3.4.2 Installation for instructions on how to check this. Turn the power on by
49、 pressing the switch at the rear. The power supply performs a series of self tests that last about 5 seconds. Normal self test indications After the power supply has executed the self tests, all characters and annunciators will be displayed, followed by the message INITIALIZING. At the end of the self tests, the supply is in the standby mode (STANDBY displayed) or in the operate mode (actual voltage and current displayed). Self test errors If a power-on self test fails, all output channels will remain disabled, and the display will indicate the
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