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2750L-P / 4500L-P / 6000L-P User Manual

1. o 1 9 B SN 6 93 e 8 o UNDER 462 O O 1 Ae A3 PHASE A PHASE B PHASE C AMPLIFIER AMPLIFIER JAMPLIFIER MODULE MODULE MODULE PS 5 6 2 CY olo CO MEE o B 7 3 2 9 All B 0 0 0 0 5 Lt ate all com Ll H SCILLATOR DULE 115 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K This page left intentionally blank 4116 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 7 REPLACEABLE PARTS 7 1 GENERAL This section contains ordering information and a complete list of replaceable parts The parts are listed by their major assembly in alpha numeric order by their reference designators The list includes the parts description manufacturers identification see Appendix A for list of manufacturers and California Instruments part numbers 7 2 ORDERING INFORMATION In order to ensure
2. 114 SECTION7 REPLACEABLE 117 7 1 GENERAL 117 7 2 ORDERING 1 1 117 SECTION 8 MIL STD 704D nnn nnn nnn nnn 119 8 1 GENERAL 119 8 2 INITIAL 5 119 8 3 119 8 4 KEYPAD ENTRY Refer to page 31 for Keyboard flow chart 120 8 5 GPIB OPERATION Refer to page 150 for syntax diagram 122 8 6 TEST SPECIFICATION 122 SECTION9 2 PHASE OPTION 2P 135 9 1 GENERAL 135 SECTION 10 160 nnn nnn nnn nnnm 137 10 1 GENERAL ans nae i
3. 32 Table 3 5 OUTPUT PARAMETER SCREEN 33 Table 3 6 MEASUREMENT 5 5 34 Table 3 7 CALIBRATION SCREEN 34 Table 3 8 CONFIGURATION SCREENS 35 Table 3 9 FRONT PANEL DISPLAY ERROR MESSAGES 44 Table 3 10 COMMONLY USED GPIB 65 49 Table 3 11 UNIT ADDRESS GROUP 50 Table 3 12 PROGRAM 5 54 Table 3 13 5 62 Table 3 14 EXAMPLE TALK RESPONSE 3 5 5 64 Table 3 15 STATUS BYTE VALUES 67 Table 3 16 CHANNEL DESIGNATORS AND
4. 84 EQUIPMENT HOOKUP FOR PERIODIC CALIBRATION 90 FLOW DIAGRAM A REMOTE CALIBRA ION 94 PLOW CHART 95 POWER SYSTEM BLOCK DIAGRAM 106 OSCILLATOR MODULE BLOCK 108 MODULE LOGATION 115 INSTRUCTIONAL MANUAL August 2001 SECTION 1 1 1 INTRODUCTION This instruction manual contains information on the installation operation calibration and maintenance of all power systems that use the 2750L P 4500L P and 6000L P 1 2 GENERAL DESCRIPTION This power system is a high efficiency power source that provides a low distortion output The output can be configured in either a single or three phase configuration A number of Power Sources can be configured to supply full output power up to 27000VA Table 1 1 shows the output VA per phase for each of the available power system models The table also shows that increased power is available at a reduced operating temperature of 352 MODEL 2750L 1P 2750L 3P 4500L 1P
5. 11101171 22121111 2 1111 E S 1 10 100 200 MAXIMUM MODULATION ENVELOPE COMPONENTS VOLTS RMS FREQUENCY Hz FREQUENCY CHARACTERISTICS OF VOLTAGE MODULATION ENVELOPE 144 Rev 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 FIGURE 3 ojojojN H H H H I 2 3anindWv NOLVInGON 0 05 0 1 02 0 02 0 01 RATE Hz CHARACTERISITICS OF AC FREQUENCY MODULATION 145 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Table 1 NOTES 1 Rev K CNLIM2 F V NLIMINAL MIND a EY Definitions T1 Power Interrupt time T2 Time it would take for the applied voltage to decay from V nom to zero volts gt T3 Time it would take for the applied voltage to rise from zero to V nom volts V MIN The minimum level expressed as a percentage of V NOMINAL to which the applied voltage is permitted to decay Tolerance to T1 T2 and V MIN 10 Test Condition No 1 2 31415 6 7 8 9 10 11 12 13 14 15 T1 MILLISECONDS 2 10 25 50 75 100 200 1000 10 25 50 75 100 200 1000 2 MILLISECONDS lt 1 20 20 20 20 20 20 20 50 50 50 50 50 50 50 T3 MILLISECONDS lt 1 8 5 5 5 5 5 5 20 20 20
6. SENSE Y INDICATOR BOARD CL DUTPUT RNG 812 OUTPUT AVERLDAD _ OUTPUT 18 V METER GRIB J5 GPIB 14 0 J7 SYSTEM INTERFACE swi CONFIGURATION SWITCH 106 2750L P 4500L P 6000L P Rev K J6 TB2 FANS EXTERNAL SENSE OUTPUT INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 5 4 AUXILIARY POWER SUPPLY The Auxiliary Power Supply receives the 300 supply voltage from the Input Power Supply The 300 supply voltage is then changed to the 50 VDC supply voltage for operating the fans and relays In addition to the 50 VDC supply 15VSW 1 is also generated This supply voltage is used for the gate drive signal in the Amplifier Modules 5 5 CURRENT LIMIT BOARD The Current Limit Board receives the oscillator signals identified as OSC A B and C from the Oscillator Module Analog switches on this board direct the oscillator signals to the respective amplifier module The analog switches switch the OSC A signal to the three amplifier inputs during 1 phase operation For 3 phase operation OSC and C are switched to the amplifiers A B and C inputs respectively Gain adjustments are located on
7. 14 SYSTEM INTERCONNECT 15 SYSTEM INTERCONNECT FOR MODE 16 SYSTEM INTERCONNECT 17 SYSTEM INTERCONNECT 18 FUNCTION TEST 23 FRONT PANEL CONTROLS AND 85 25 REAR PANEL CONNECTIONS 6000L 2750L 4500L 27 FUNCTION STROBE 5 31 31 REMOTE COMMEND SEQUENCES 52 CIIL PROGRAM 69 CONFIDENCE TEST FLOW 74 INTERNAL ADJUSTMENTS AND JUMPER LOCATIONS
8. 24 8 8 FRONT PANEL 8 24 3 4 PANEL CONNECTIONS 26 3 5 FRONT PANEL 31 36 MEASURE THE OUTPUT 46 37 REMOTE PROGRAMMING WITH ABBREVIATED PLAIN ENGLISH APE 47 38 REMOTE OPERATION WITH 67 SECTION 4 CALIBRATION PROCEDURE 82 41 GENERAL 82 42 TESVEQUIPMENT deis ete cass 83 227 PERIODIC CALIBRATION eee 88 447 NONPERIODIC CALIBRATION 96 SECTION 5 THEORY OF 105 54 GENERAL 105 5 2 OVERALL DESCRIPTION 105 5 3 INPUT POWER 5 105 5 4 AUXILIARY POWER 5 107 5 5 CURRENT LIMIT 107 5 6 INDICATOR BOARD mn
9. e LOW GAIN FAULT SIGNAL FAULT LOW OUTPUT FAULT HIGH OUTPUT FAULT AI 9 An 36 8 18 25 27 eg fol ee Pamen g Paer e Pamer ge 4 SOURCE CH2 FAIL 4 4 TEMPERATURE FAULT LOW GAIN FAULT SIGNAL FAULT OSCILLATOR FAULT LOW OUTPUT FAULT HIGH QUTPUT FAULT Al 2 11 All 11 37 FO7ACST DEV 19 Fo7ACS1 DEV 6 9 FO7ACS DEV 12 FO7ACS1 17 FO7ACS DEV 241 FO7ACS1 DEV 28 FO7ACS DEV SOURCE CH2 eu SOURCE 6 3 eo d SOURCE CH3 CHS SOURCE CH3 CONTROLLER 2 02 CONTROLLER CONTROLLER TEMPERATURE surmiv 197297 Low FAULT SicNAL FAULT OSCILLATOR FAULT REFERENCE FAULT MC HIGH REFERENCE FAULT A3 CH1 2 amp 3 CHI 2 amp 3 A2 AS 11 11 All 38 FO7ACS1 DEV 18 FO7ACS1 DEV CHS 20 Fo7ACS DEV SOURCE CH3 CONTROLLER CH3 CONTROLLER TEMPERATURE FAULT OSCILLATOR FAULT REFERENCE FAULT cma amp 3 3 A11 A11 MEASURED MEASURED Y sn Y STA PANG 240 CHS PANG 120 N STA la RESET RESET RESET FO7ACS DEV STA STA ences CONTROLLER M CURRENT FAULT 32 CH1 29 rozAcS DEV Fovacst DEV LU au CONTROLLER CH2 CONTROLLER CH3 NET UTE PHASE FAULT PHASE FAULT An 53 FO7ACS DEV 2 SOURCE CH2 H GIU MEO CURRENT LIMIT FAULT 2 PANG 2
10. California Instruments Revision K August 2001 Copyright 1995 2001 California Instruments All rights reserved P N 4009 316 INSTRUCTION MANUAL 2750L P 4500L P 60001 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K TABLE OF CONTENTS SECTION 1 INTRODUCTION AND SPECIFICATIONS n ern 1 13 INTRODUCTION i i 1 1 2 GENERAL e nsns ns nennen ess nennt nene ne nnn 1 1 3 ACCESSORY EQUIPMENT RACK SLIDES 3 1 4 SPECIFICATIONS cnc a 3 SECTION2 INSTALLATION AND ACCEPTANCE 13 21 UNPACKING 13 2 2 13 23 MECHANICAL INSTALLATION sma 13 24 INPUT WIRING mnn 13 25 OUTPUT CONNEGTIONS 20 2 6 OUTPUT VOLTAGE 5 20 2 7 FUNCTION TEST 20 2 8 REAR PANEL DIP SWITCH SW1 21 SECTION 3 OPERATION nM 24 31 GENERAL 24 3 2 FRONT PANEL 15
11. 399 E s398v1 oles JAIM 434 9415 9 9 9 6 9 9 92 76 41 gt 32914 dAl 80 4 IAIA Q30NVMIS 8 DAW NE 39 caL 1483 SDIVTIOSD 10 29 5 8303 005010009 Tal A8 QIHSINZN 0 IVNIWAIL L4 h 17 mfra OV 581 ia 3280085 3 04 10067 10009 100 2v v 191 h 39 caL anans 10059 10009 MIETET 29 191 7081405 310W3s 1 2 600 803 ASSY ATI pe Fava 103880 nm NE caL asus 1 3 eae soins nbs Ty 1 nne x 19 i 92 46 415 H19N31 79093 30 38 1 Tal Dl S3NIA Tv 39591 YO JAIA 030 9415 01 OAV 103 ag A 181 1311 38 LSAW 3SN3S 3Hl 1317 15 1 SI 04971719 0 14 V 3SN3S 3Hl SSUBSOV 39 JHL SI 39VLIDA 104100 GIWWVADDAdA 3Hl Tal LV 0901 3HL 19 13 11234534 OF ANY IH HAMDdA 29 Ul 38 1 10 3SN3S 1 IHL 4995 664 TORQUE TO 35 IN LBS 17 PLACES
12. 4500L 3P 6000L 1P 6000L 3P 9000L 2 1P 9000L 2 3P 12000L 1P 12000L 3P 13500L 3 1P 13500L 3 3P 27000L 6 1P 27000L 6 3P Number of power sources 1 o YD Table 1 1 INTRODUCTION AND SPECIFICATIONS OUTPUT VA PER PHASE 50 C 85 C 2700 3000 900 1000 4500 5000 1500 1667 5330 6000 1770 2000 9000 10000 3000 3333 10600 12000 3540 4000 13500 15000 4500 5000 27000 30000 9000 10000 OUTPUT VA PER PHASE 2750L P 4500L P 6000L P Rev K NUMBER PHASES 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 Rev K MODEL 4500L 2750L 6000L P OUTPUT DRAWINGS Figure 1 1 S S8 6 YIN ewe ism INdNI JIMDA 010000 ZNANA 0 0 0 e 3SN3S IVNABIXA9 IND 51559 2 710009 105 2 1006 SLINAWNASLSNI VINSO ST 192 1 1 4ANMDIH SIAS oovs 7 NDIVOIQNI lt 8v 4 Bil HOT OE 187 4 0022 U U U i 1 NI 073519 H e 100 073819 E 9 2 289 S 00 61 E HOLIMS 80123138
13. Header HR1 or HR2 upper or lower case Message Separators 1 Data transfer rate 200K bytes per second Language A California Instruments language which is upward compatible from other C I products Functions Range Resolution Initialization Voltage 0 to range 0 1 5 0 Voltage range 135 270 0 1 135 Phase angle 0 to 999 9 0 1 240 120 Output relav GPIB Open or Close Open External Svnc Internal or External Internal Storage Registers Registers 0 through 16 45 to 5000 Hz for 45001 3 8 2750L 3P 2000 Hz for all others 440 Hz for 60001 Resolution 0 01 Hz from 45 00 to 99 99 Hz 0 1 Hz from 100 0 to 999 9 Hz 1 Hz from 1000 to 5000 Hz Default 60 Hz anv other available Current Limit INSTRUCTIONAL MANUAL August 2001 MODEL 2750L 3P 2750L 1P 4500L 3P 4500L 1P 6000L 3P 6000L 1P 9000L 2 3P 9000L 2 1P 12000L 2 3P 12000L 2 1P 13500L 3 3P 13500L 3 1P 18000L 3 3P 18000L 3 1P 27000L 6 3P 27000L 6 1P For other Voltage Ranges NOTE 1 NOTE NOTE 2750L P 4500L P 6000L P Rev K CURRENT LIMIT RANGE VOLTAGE 1 RESOLUTION DEFAULT 135 270 on 135 Range 0107 40 3 70 0 01 7 40 0 to 22 22 11 11 0 01 22 22 0 to 12 34 6 17 0 01 12 34 0 to 37 04 18 52 0 01 37 04 0 to 14 82 7 41 0 01 14 82 0 to 44 44 22 22 0 01 44 44 0 to 24 68 12 34 0 01 24 68 0 to 74 08 37 04 0 01 74 08 0 to 24 68 12 34 0 01 24 68 0 to 74 08 37 04 0 01 74 0
14. NOTE RMPA and RMPB screens are not accessible until AMP FRQ CRL or PHZ are programmed PRG but not vet entered ENT Table 3 5 OUTPUT PARAMETER SCREEN 33 INSTRUCTIONAL MANUAL August 2001 The following are for measured values 2750L P 4500L P 6000L P Rev K NO SCREEN EXTENSIONS ARGUMENT ACTION TAKEN NAME 11 ELT 5 Hrs Min Sec Reports the total accumulated run time up to 9 999 hours 21 VLT 0 400 0 the TRMS output voltage 22 CUR 0 0 200 0 Measures the TRMS output current Amps or Range depends on maximum current per phase 0 00 20 00 23 PWR 0 00 27 00KW or Measures the True output power Range 0 2000 watts depends on output VA per phase 24 PWF 0 1 000 Measures the power factor of the load 25 APW 0 00 27 00 or Measures the apparent out put power Range 0 2000 VA depends on output VA per phase 26 FQM 40 5000 Measures the output frequency in hertz 27 PZM 0 359 9 Measures the phase angle of the output voltage relative to phase A and phase A relative to an external input Table 3 6 MEASUREMENT SCREENS NO SCREEN EXTENSIONS ARGUMENT ACTION TAKEN NAME 13 CAL VLT Actual out put Calibrates the measured voltage to be the voltage same as argument 14 CAL CUR Actual out put Calibrates the measured current to be same as current amps argument 15 CAL PWR Actual out put Calibrates the measure
15. SYSTEM INTERCONNECT 6000L 3 12000L 2 3 4500L 3 18000L 4 3 Figure 2 2 SYSTEM INTERCONNECT CABLE MODELS USED 4995 6695 27501 45001 60001 INSTRUCTIONAL MANUAL August 2001 Rev 5 5 285 wa die 03 SI W31SAS 3Hl N3H 558 1N3N ANY 90 SI 104100 Ses 59 109100 29 nol zx Bio m precor 395 Slee AU S3AUd vzal oie finan va LNAN aa 229 mi xg an 6 lt lt c c c dud set em e zz 288 90900 E BD 62 1 SINVALS Ee ISS cq 055359446 30491 ales es la8 JAIA 430 9415 9 62 6 1 885 89 5 5 5 5 20212 8 LL FRY 88 4 s 188 92 76 SINVALS go 532 14 21 830491 aD Dd gt JAA 1 DAV BA aoi 7 J 2 Leza gt 88 88 NI 33A Dd 29 81 b 8 MILVTISU 1nDHll 100 amp 3 09 IV H 3981008 IMDA 1006 10009 181 A8 QAHSINANA 2114 TwNIWS31 I 3264831NI b 2 2 1 77 29 I oni 3385 33884 8370009 rr mind V 1
16. To program the voltage to maximum Maximum Range value PRG ENT 6 Verify that the front panel voltmeter indicates approximately the programmed value for all three phases or for phase A for a 1 phase system 7 Program the AC Power System to the low range with the following keystrokes 4 ENT low voltage range value PRG ENT 8 Program the output to the maximum low voltage range voltage 5 ENT maximum low voltage range value PRG ENT 9 Observe each of the outputs with the oscilloscope or distortion analyzer The outputs should be clean sine waves having less than 1 0 distortion 10 Apply full loads to each phase Refer to Table 4 1 Verify that the voltage of each phase remains within 0 0005 x voltage range volts of the no load voltage The waveforms shall still appear clean on the oscilloscope and have less than 1 distortion 11 Program the Current Limit to 5 0 amps 8 ENT 5 PRG ENT 12 The display should show the error message AMP ABC FAULT for a 3 phase system The error message may not however include all of the phases The output will default to a programmed value of 5 0 volts with the output relays open 2 8 REAR PANEL DIP SWITCH 5 1 The rear panel Dip Switch is used only for the output phase configuration in high power multi chassis systems The following product system configurations must have the DIP switches set to the logic 1 or OFF position a All single chassis systems b All chassis with the Osc
17. 21445 HOLIAS 7 NDILVANDIHNDI 0 v 68 6 V In 1184110 14 5 5 CABLE 4009 231 1 4009 250 1 MODELS USED 2 1 2 4 1 1 TB2B MARATHON PART NUMBER 1422570 TB2A MARATHON PART NUMBER 1423570 1 45001 3 120001 2 3 90001 2 5 180001 4 3 5 5 60001 3 Rev K 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 b ny amp alee 5 88 5 98 2 5 lt 0410 99 ue 5 oO 48 LNdNE S3AUd 29 deal veal mA LAAN aH gt 283 ol 3g 88 0 182 T e S a 5 e I ao 62 gt 291 foal C
18. 45A 63227 1 0 2 241175 4 48VDC 23936 1 0 C1 611295 CAP AL 3900TF 400V 80031 1 0 4 1 270176 20 250 71400 1 0 4 2 270176 FUSE 20 250 71400 1 0 A4F3 270176 FUSE 20A 250V 71400 1 0 118 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 8 MIL STD 704D 8 1 GENERAL MIL 704D option is capable of performing all sections of MIL STD 704D It will perform all tests in the order listed below or part of the test There is a 5 second delay between tests to allow the operator to evaluate the result of the test 8 2 INITIAL SETUP Nominal parameters for the AC Power Source shall be as follows OUTPUT VOLTAGE 115 L N OUTPUT FREQUENCY 400 OUTPUT PHASE ANGLE B 240 C 120 8 3 TEST PERFORMED 8 3 1 STEADY STATE TEST Refer to MIL 704D Doc Table 1 Voltage per Figure 1 page 151 Voltage unbalance per Figure 2 page 151 Voltage phase difference per Figure 3 page 151 Waveform distortion factor per Figure 4 page 151 Frequency per Figure 5 page 151 8 3 2 TRANSIENT 1 Voltage Transient Refer to MIL 704D Doc Figure 5 High voltage Transient per Figure 6 page 152 Low voltage Transient per Figure 7 page 152 2 Transient Refer to MIL 704D Doc Figure 6 High frequencv Transient per Figure 8 page 153 Low frequencv Transient per Figure 9 page 153 8 3 3 ABNORMAL OPERATION 1 Abnormal v
19. TP10 R1 AMPA TP2 R1 AMP B E 1 SLAVE 4 TP10 R1 AMPA 2 R1 AMP R1 AMP SLAVE 5 TP10 1 AMPA 2 R1 R1 270001 6 3 10 Monitor voltage for reference 2 1 voltage as MASTER 10 2 1 N y SLAVE 1A TP10 R1 AMP A 2 R1 B 1 SLAVE 1 10 Monitor voltage for reference 2 1 Same voltage as SLAVE 1B TP10 TP3 R1 AMP C SLAVE 2B TP10 1 AMPA 2 R1 AMP B R1 AMP SLAVE 1C TP10 None Monitor voltage for reference 2 1 Same voltage as SLAVE 1 TP10 TP3 R1 AMP C N SLAVE 2 10 R1 AMPA E TP2 R1 AMP B 1 100 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 4 4 6 CURRENT LIMIT CALIBRATION Select the Current Limit CRL screen Screen 8 and program the Current Limit PROGRAM VALUE from Table 4 1 Monitor the power system phase A output current with the external current transformer and AC DVM Connect an oscilloscope to the output Program the low voltage range and the voltage to 80 of range Program the frequency to 60 Hz Apply the LOAD RES value from Table 4 1 to the power system phase A output only Increase the output amplitude slowly until the external AC current transformer indicates SET VALUE from Table 4 1 Slo
20. 20 20 20 20 OF V NOMINAL V MIN 0 50 15 10 5 0 0 0 20 50 0 15 5 0 0 2 VOLTAGE WILL REACH ZERO IN THIS TEST CONDITION 146 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K LIMITED WARRANTY California Instruments believes the information contained in this manual is accurate This document has been carefully reviewed for technical accuracy In the event that technical or typographical errors exist California Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition The reader should consult California Instruments if errors are suspected In no event shall California Instruments be liable for any damages arising out of or related to this document or the information contained in it CALIFORNIA INSTRUMENTS PROVIDES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THIS SOFTWARE AND DOCUMENTATION CALIFORNIA INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of liability of California Instruments will apply regardless of the form of action whether in contract or tort including negligence The warranty provided herein does not cover damages defect
21. 3 7 24 TO PROGRAM 1 OR 3 PHASE MODE MOD The MOD header with the required PHS extension is used to identifv the mode command The argument is either a 1 or a 3 to specifv the 1 or 3 phase mode respectivelv A mode change the AC Power Svstem will cause the output voltage to go to the default values The following string will set the AC Power Svstems to the 3 phase mode MOD PHS 3 3 7 25 TO TALK TLK MEASURED AND PROGRAMMED DATA The TLK header will setup the AC Power Svstem to talk data The TLK header will setup the AC Power Svstem to report a programmed output parameter if the program header is the argument for the TLK header To setup the AC Power Svstem to report a measured value attach a measurement header as the TLK argument The measurement headers are VLT PWR APW and PWF with an A extension FQM with no extension The following string will setup the AC Power Svstem to measure the phase A power output when it is talk addressed TLKPWRA All arguments for the header are shown in Table 3 13 Table 3 14 shows an example response for arguments with A or extension For 1 phase systems all responses will only include the phase A value For 3 phase svstems if the argument includes the A or extension the response message will be for the indicated phase A GPIB Service Request SRQ will be generated at the completion of a measurement if the SRQ2 h
22. August 2001 4 3 3 Rev K CURRENT MEASUREMENT CALIBRATION For calibration of current measurement perform the following steps 1 2 4 3 4 Program 60 Hz 135 0 volts and the maximum Current Limit value If any calibration screen is already displayed the Current Calibration screen CAL CUR displayed by repeatedly depressing either the MON or PRG keys and then skip to step 6 If a calibration screen is not displayed press the MNU key several times until the screen shown below is displayed SNC 01 CLK 02 WVF 03 RNG 04 Enter the key sequence 959 ENT Depress the MNU key several times until the configuration menu screen is displayed as shown below CFG 16 ALM 17 FLM 18 CLM 19 Enter the sequence 14 ENT to access the CUR screen Determine the full load resistive value from the LOAD RES value from Table 4 1 the load to the phase A output Measure the phase A output current with the AC Digital Voltmeter and Current Transformer On the kevpad enter the kev Measured phase A current Example 11 05 A PRG ENT After about 5 seconds the current measurement function for phase A will be calibrated Repeat step 6 for phase B Repeat step 7 except enter the key sequence Measured phase current B PRG ENT Repeat step 6 for phase C Repeat step 7 except enter the key sequence Measured phase C current C PRG ENT POWER MEASUREMENT CAL
23. DISTortion This test will generate a 596 distortion on the selected phase The test will last for 30 minutes This test can be terminated at any time 10 6 1 5 NORMAL STATE VOLTAGE MODULATION DO160 A B C NORMal state VOLTage MODulation numeric This test requires a numeric value equal to the modulation rate in Hz See Figure 2 The amplitude modulation is calculated based on the modulation rate This test will last for 2 minutes 10 6 1 6 NORMAL STATE FREQUENCY MODULATION DO160 A B C NORMal state FREQency MODulation numeric This test requires a numeric value equal to the modulation rate in Hz See Figure 3 The frequency modulation is calculated based on the modulation rate This test will last for two minutes 10 6 1 7 NORMAL STATE POWER INTERRUPT DO160 A B C NORMal state MOLTage UNDer lt numeric gt 140 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K This test requires a numeric value equal to the test number There are 15 tests See Table 1 10 6 1 8 NORMAL STATE VOLTAGE SURGE DO16OJAJJBIICI NORMAL state VOLTage OVER This test requires a power source with 160 volt output If the power source has a dual voltage range the test will select the high voltage range to complete the test The output voltage will remain at 115 volts for 5 minutes before it rises to 160 volts for 30 msec then stay for 5 seconds at 115 volts then drops to 60 volts for 30 msec before returning to 115 volts f
24. INSTRUCTIONAL MANUAL August 2001 JAIA 030 815 8 DAY mom s gt aues 182 NI JAMDA OW eet 10009 100 samos 27 9v 181 309483LNI it NI 29 EE 0057 10009 100 sanna Ov 191 it NINNOBJAZ NI S3ADd 27 eal 20 0057 10009 100 29 191 1 h Ov S3ADd 29 ves 70069 10009 TITTIE 1 EX El DT c6 lt gt 9 309 4831NE NL peexomemwg 47 p eps NI 8390 39 BE a 1112 10nDHlIM 8 5 4 710067 10009 ind Ly zd ev 191 630 el gt 4 5 amp Se S8 NI HES ARS 6E Hic NONN 503 0350 di 88 3331 04 L93NNUO JEX anm xs www oy 88091 edt asnas axa ily 9 spe v
25. The PHZA value can be used to control the point of the phase A waveform where the change will occur The following example will drop the phase A waveform at 90 degrees for 0 017 seconds before going to 115 volts PHZA 90 DLY 017 VAL 115 The following example will increase the phase A output voltage to 135 volts for 0 017 seconds starting at the 90 degree point of the waveform The voltage will return to 115 volts after the transient PHZA 90 AMPA 135 DLY 017 VAL 115 3 7 8 TO PROGRAM CURRENT LIMIT CRL The CRL header with the optional A B or C extension is used to identify the Current Limit Command The argument is a numeric data field from 0 0 to the maximum rated current of the power system The following string will program a current limit of 10 5 amps for all three phases CRL 10 5 3 7 9 TO PROGRAM CALIBRATION CAL The CAL header when used alone or followed by the header AMP in addition to an A B or C extension is used to calibrate the programmed output voltage The argument is a relative starting coefficient from 0 to 255 or the ASCII symbol The CAL ramp is terminated with the GPIB message Group Execute Trigger GET The CAL header can be used with a Delay DLY command to allow the external calibration AC DVM time to settle Refer to Section 4 for additional information ACAL coefficient can be programmed without a ramp by using only the argument with the CAL header To program the CAL A coefficient to 55 use t
26. Weight lbs Material Finish Air intake exhaust Modularity Connectors Input Power Output Power Auxiliary Output Power External Sense System Interface mating connector System Interface IEEE 488 connector Chassis slides Operating temperature Storage temperature Operating altitude 2750L P 4500L P 6000L P Rev K phase of this input Loss of this input will cause the output to default 32 character LCD display Output Overload Over temperature Power On High Voltage Range 10 5 inches 26 7 cm high 23 inches 58 4 cm deep and 19 inches 48 3 cm wide 175 79 2 Aluminum for Front panel rear panel and top cover Steel for chassis Front panel painted gray 26440 per Federal Standard 595 Chassis zinc plate type 2 class 2 Rear panel and top cover iridite Intake from both sides of chassis Exhaust to the rear Oscillator All amplifiers DC power supplies Current Limit Board Assembly Range Relay Board All displays Kulka terminal block 9 85 5 TB3 Kulka terminal block 9 85 4 TB1 Barrier Strip TB2 AMP connector 1 480705 0 J6 3M Connector 3366 1001 plug 3M connector 3367 1000 J7 J5 Zero Manufacturing Company Model CTN 1 20 E94 02 to 50 C 40 C to 852 0 to 6000 Ft 10 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K OPTIONS SPECIFICATIONS Universal Input Power UP option 342 to 456 V three phase Output Vol
27. line change 10 from no load to full load Tests 3 phases for output oscillator drive phase relationship frequency and current limit Performs all sections of MIL STD 704D 2 PHASE 2P RTCA DO 160C 2 phase operation DO160C option Performs all sections of RTCA DO 160C MODEL 9000L 1P 13500L 1P 27000L 1P 9000L 2P 9000L 3P 12000L 3P 12000L 1P 13500L 3P 18000L 3P 18000L 1P 27000L 3P SYSTEMS POWER PER PHASE 352C 10000 15000 30000 5000 3333 4000 12000 5000 6000 18000 10000 UP 9000 13500 27000 4500 3000 4500 9000 12 MAX CURRENT PHASE 135V RANGE 352C UP 74 08 66 66 111 2 100 0 2222 200 0 37 04 33 34 34 68 22 22 29 62 88 88 37 04 33 34 44 44 133 4 74 08 66 66 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 2 INSTALLATION AND ACCEPTANCE 2 1 UNPACKING Inspect the unit for any possible shipping damage immediately upon receipt If damage is evident notify the carrier DO NOT return an instrument to the factory without prior approval Do not destroy the packing container until the unit has been inspected for damage in shipment 2 2 POWER REQUIREMENTS The AC Power System has been designed to operate from a three phase AC line voltage The input line voltage may be between 187 volts and 252 volts line to line for the standard product or 342 to 456 volts line to line for the UP option The frequency may be between 47 Hz an
28. 0 13500L 3 3P 37 04 32 06 74 08 25 0 13500L 3 1P 111 2 96 18 222 2 75 0 27000L 6 3P 74 08 64 12 148 2 50 0 27000L 6 1P 222 2 192 4 150 0 MAX CURRENT TABLE 63 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 3 14 EXAMPLE TALK RESPONSE 3 PHASE SYSTEM ASCII STRING SENT RESPONSE AFTER ADDRESSED TO TALK TLK ALM 135 0 270 0 000 0 000 0 000 0 APWA1003 B0985 C1507 TLK CFG CFGA0001 B0028 C0120 TLK CLM CLMA11 12 0002 0000 CRLA11 12 11 12 11 12 CUR CURAO6 14 B05 12 06 71 ELT ELTHO147 0051 50033 FLMAO060 B0045 0550 FQM59 97 FRQ FRQ60 00 TLK CLK CLK INT SNC SNC INT PHZ PHZA000 0 B240 0 120 0 PWF PWFA1 000 B1 000 C1 000 PWR PWRAO 737 0 620 0 806 PZMAO000 0 B242 1 C118 9 REGO ACTUAL CONTENTS OF REGISTER 0 RNG RNGA 135 0 135 0 C135 0 VLTA120 1 B119 8 C120 0 WVF WVFA SNW BSNW SNW If function is not enabled a svntax Error message will be generated 3 7 28 TO TALK THE MEASURED OUTPUT POWER TLK PWR PWR may be used as an argument to the header with an A extension When used as an argument it will set up the AC Power System to measure the output power in watts with 1 watt resolution for the 4500L 3P and 2750L 3P The power is measured in kilowatts with 0 01 KW resolution fo
29. 1 1 REG ENT The second portion of the program will be stored in Register 2 6 Select the FRQ screen and program 62 Hz 6 ENT 62 PRG 7 Select the AMP screen and program 135 volts 5 ENT 135 PRG 8 Select the RMP screen and program DLY 0 01 STP 0 1 and VAL 115 9 Store this program in Register 2 2 REG ENT To initiate the program 1 REC ENT 3 5 14 TO PROGRAM SIMULTANEOUS RAMPS Two outputs mav be simultaneousiv ramped or stepped bv enabling two parameter screens The screen first selected will be the dependent parameter The last parameter screen selected before entering the ramp RMP screen is the independent parameter The independent parameter is used to specifv the number of steps in a ramp Since the dependent parameter has as manv steps as the independent parameter the step STP size must be calculated so the dependent parameter will not exceed its maximum value The following example will specify frequency as the independent parameter and phase as the dependent parameter Refer to paragraph 3 5 8 for more information The following example will ramp frequency from 360 to 440 Hz at a rate of 2 Hz per 2 second while each 2 Hz step causes the amplitude to go from 10 volts to 210 volts in 5 volt steps 1 Select the AMP screen and specify the starting voltage of 10 volts 5 ENT 10 PRG 42 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 2 Select the FRQ screen and specify the starting freque
30. 2 3 9000 100007 3000 3333 22 24 24 68 11 12 12 34 9000L 2 1 9000 100007 9000 10000 66 66 7408 33 33 37 04 120001 2 3 10600 12000 3540 4000 26 24 29 62 13 12 14 81 12000L 2 1 10600 12000 10600 12000 78 7 88 88 39 35 44 44 135001 3 3 13500 150000 4500 50007 33 34 37 04 16 67 18 52 135001 3 1 13500 150000 13500 150007 1000 111 20 50 0 55 6 18000L 3 3 15900 18000 5300 6000 39 35 44 44 19 68 22 22 18000L 3 1 15900 18000 15900 18000 118 0 133 4 59 0 66 7 27000L 6 3 27000 300007 9000 10000 66 66 74 08 33 33 37 04 270001 6 1 27000 300007 27000 300007 2000 222 24 100 0 111 10 NOTE Increased current at 35 C is available up to 2000 Hz 440Hz for 60001 1 For UP option output VA and Current is limited to 50 C values For other Voltage Ranges Current per phase VA per phase Voltage Range Power factor 0 to unity at full rated output VA Peak Repetitive Current 2 5 times the maximum 5 current at 5020 2750L amp 6000L 4 times TRMS current at 50 C Peak Non repetitive Current 10ms 205 for 60001 2 7 times the maximum TRMS current at 50 C 2750L 8 60001 4 times TRMS current 502C INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Voltage range 135 and 270 Standard 67 5 and 135 LV Option 156 and 312 HV Option 200 and 400 EHV Option Total Distortion Maximum for all harmonics and noise to 300 KHz at full power with linear load 45 Hz to 2 KHz 1 THD to 5 KHz 2 THD Li
31. 2001 Rev K REAR PANEL CONNECTIONS 6000L 2750L 4500L Figure 3 2 45 48 019 15 45 ad G jSN3S b WWALNAN v ONLUS 45 435 3 indino 6 25 35 8 104101 414 LAdGNI amp 2 SSNS V I 1144110 3 I I NOILONA4 NOILONA4 NId NOILONN 4 NId 9n Tal G S8 6 0001 2966 WE LAdNI 887 331 SOV 484 1 QNO SISSVHO 8 Sp EZ cr e 5 C CO e C OC 2 TAI 9 5 I 359 363 5 5 an an au Gas as e e SD as ax C 9 909 CIC IC 9090725 a OUO a an an as 3C 2 lcu 13 23 Co gg E SM et IE Al 0 60 087 0 ASNSS IVNSdLIX DLOJNNOD AL 19103445 1144100 33 ld HILIMS 3284015 v S8 6 V In 1184100 id3 d 27 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 4 4 IEEE 488 CONNECTOR J5 is th
32. 53 17 47 4 NI ov eal JADHHA 10D JARDA 2v FINDS IMDS Ttocv 10009 18 29 te2 600 303 Q3sn 3 ASSY SAITONI 31892 884 3331 am Savana ov 88 333 17 eal Sp 5 e 1 el gt Ww pr 92 LE SANVYLS gt H19N31 79003 40 ina SOM 38 1508 181 01 SIXA TW 30897 ND IAIM 030 9415 DMY Tal OL 1123414 0311 38 ISNW 3SN3S WNASLXS FHL TATIVILSNI SI 1125 14 Y NIHM 3 3 IWNAJIXI 3 1 SSUNOV JHL SI 1018110 GAWWVADDAA JHL L 141 19 ND 3 1 19 239535 07 IH AdLNO 29 04 03123 2 LSAW 1 ASNAS IWNBH3IX3 FHL 17 PLACES SVSTEM INTERCONNECT FOR MODE OPTION 60001 3 12000L 2 3 4500
33. AMPLITUDE AMP The AMP header with the optional A B or C extension is used to identify the amplitude command The argument is a numeric data field from 0 0 to the limit set by the RNG value An attempt to program a value higher than this value will generate an error and a SRQ on the GPIB The following ASCII strings will program the voltage given in the left column A B C 0 0 volts AMPO A B C 10 5 volts 10 5 1 05 1 AMP105E 1 A B C 100 volts AMP100 or AMP100 0 or AMP1E2 A B 110 5 115 AMPA110 5AMPB110 5AMPC115 or AMP110 5AMPC115 3 7 6 TO PROGRAM FREQUENCY The FRQ header is used to identify the following numeric data as frequency The following string will program the frequency to 60 56 Hz FRQ 60 56 3 7 7 TO PROGRAM PHASE ANGLE PHZ The PHZ header with the optional A B or C extension is used to identify the following numeric data as phase The PHZ header sent with no extension will program the B and C outputs in phase with phase A The phase of the A output will lead the EXT SNC signal by the value programmed 55 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K The following example will program the phase A output to 90 degrees relative to an external sync signal when operating in the EXT SNC mode PHZA 90 The following example will program phase B to 240 5 degrees and phase C to 119 3 degrees leading phase A PHZB 240 5 2 119 3
34. Hz to 375 Hz The frequency will step up to 400 Hz in the following sequence 375 Hz for 1 second 380 Hz for 4 seconds 390 Hz for 5 seconds 393 Hz for 4 seconds 6 Transient frequency test MIL704D TRANsient FREQuency This test will combine the high frequency transient and the low frequency transient There is a pause of 5 seconds between tests 8 6 3 ABNORMAL 1 Abnormal overvoltage test Figure 10 MIL704D A B C ABNormal VOLTage OVER This test requires a 180 volt range A range change will take place if the power source is not set for the high range The output voltage will drop temporarily to allow for the range change and after 5 seconds the test will begin The output will go to 180 volts for 50 msec and will drop gradually to 125 volts in 450 msec The output voltage will remain at 125 volts for 9 5 seconds before it drops to 115 volts After 5 seconds a range change will take place to the original setup This is a simultaneous test to all selected phases 2 Abnormal undervoltage test Figure 11 MIL704D A B C ABNormal VOLTage UNDer The output voltage will drop to 0 volts for 7 seconds It step up to 100 volts for 3 seconds before it will go to 115 volts This is a simultaneous test for all selected phases 124 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 3 8 6 4 Rev K Abnormal voltage test MIL704D A B C ABNormal VOLTage This test will combine Abnormal overvoltage and Abnor
35. LF gt 76 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K The FREQ modifier may also be used to instruct the power source to measure the output frequency as follows Note that the noun modifier precedes the channel indicator FNC ACS FREQ CH00 lt CR gt lt LF gt Followed by string FTH FREQ CR lt LF gt The response from the power source when the frequency is 380 0 Hz is then SP 380 0 CR lt LF gt 3 8 4 3 PANG The PANG phase angle noun modifier may be contained in a string as an instruction to the power source with SET SRX or Depending on the OP code an output phase angle or phase angles may be programmed or the upper or lower limit set in one tenth degree increments The channel indicator which precedes the modifier determines which phase or phases will be so set The number which follows the modifier in the string determines the phase angle to be programmed ACS CH02 SET PANG90 CR lt LF gt As with the FREQ and VOLT modifiers the INX OP code may be used to request time for PANG measurement ASC PANG CH02 lt CR gt lt LF gt INX PANG 1 CR lt LF gt When addressed to talk the power source responds with the maximum time required to make the measurement in seconds lt 5 gt 5 lt LF gt When operating in the external sync mode the phase angle of phase A relative to the external sync input may be programmed as follows FNC AS
36. Load Balance will cause the OVERLOAD Lamp to illuminate If the AC Power System OVERLOAD lamp is on the following items may be at fault T The output is overloaded SOLUTION Remove the overload 2 The programmable current limit level is set too low for the load being driven SOLUTION Compute and reprogram the correct programmable current limit level 3 The programmable current limit is incorrectly calibrated SOLUTION Perform the calibration in paragraph 4 4 5 page 98 4 The adjustment of the Amplifier Gain Balance or Load Balance is incorrect SOLUTION Perform the adjustments in paragraph 4 4 2 and 4 4 4 page 82 5 Incorrect AC Power Source configuration Check the ELT screen It should show more than 24 hours of operation If it shows less than 24 hours consult the factory 6 6 CAN T PROGRAM AC POWER SYSTEM ON GPIB If the power source does not respond to IEEE 488 GPIB programming the following items may be at fault 1 The power source unit address is wrong SOLUTION Update address See paragraph 3 7 1 page 47 2 GPIB cable is loose at power source rear panel SOLUTION Check connection tighten jack screws 3 The oscillator has failed SOLUTION Replace the oscillator See Paragraph 6 10 page 113 6 7 DISTORTED OUTPUT The AC Power System output may have a distorted sine wave from the following causes 1 The power source output is overloaded SOLUTION Remove the overload or program the current limit to a higher value O
37. NOUN MODIFIERS 71 Table 3 17 NON CNF STATUS MESSAGES 76 Table 3 18 DISCRETE FAULT INTERRUPT CONDITIONS 80 Table 3 19 SAMPLE PROGRAMMING STRINGS 81 Table 41 SETUP LOAD VALUES 86 Table 41 SETUP LOAD VALUES continued 87 Table 42 AMPLIFIER LOAD BALANCE ADJUSTMENTS 99 Table 4 3 CURRENT LIMIT ADJUSTMENT 102 Table 6 1 5 111 Figure 1 1 Figure 2 1 Figure 2 2 Figure 2 2 Figure 2 2 Figure 2 2 Figure 2 3 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 3 5 Figure 3 6 Figure 3 7 Figure 4 1 Figure 4 2 Figure 4 3 Figure 4 3 Figure 5 1 Figure 5 2 Figure 6 1 MODEL 4500L 27501 6000L P OUTPUT DRAWINGS M 2 6000L 2750L and 4500L 3P REAR PANEL CONNECTIONS
38. P 6000L P August 2001 Rev K 8 5 GPIB OPERATION Refer to page 150 for syntax diagram The following command will be used to execute the appropriate part of all of the test MIL704D A B C Test all MIL704D Sections MIL7OAD A B C STEady state MIL704D A B C STEady state MIL704D A B C STEady state VOLTage UNBalance MIL704D A B C STEady state PHASe DIFFerence MIL704D A B C STEady state WAVeform DISTortion MIL704D STEady state FREQuency MIL704D A B C TRANsient MIL704D A B C TRANsient VOLTage MIL704D A B C TRANsient VOLTage HIGH MIL704D A B C TRANsient VOLTage LOW MIL704D TRANsient FREQuency MIL704D TRANsient FREQuency HIGH MIL704D TRANsient FREQuency LOW MIL704D A B C ABNormal MIL704D A B C ABNormal VOLTage MIL704D A B C ABNormal VOLTage OVER MIL704D A B C ABNormal VOLTage UNDer MIL704D ABNormal FREQuency MIL704D ABNormal FREQuency OVER MIL704D ABNormal FREQuency UNDer MIL704D A B C EMERgency MIL704D A B C EMERgency VOLTage MIL704D EMERgency FREQuency All lower case letters are option A B C represent phase A They are optional if they are omitted the test will be applied to all three phases 8 6 8 6 1 TEST SPECIFICATION STEADY STATE 1 Steady state voltage test Figure 1 MIL704DJA B C STEady state VOLTage This test will change the output voltage simultaneously from 115 volts to 108
39. PROGRAMMABLE CURRENT The load draws more current than the programmed current limit point on any phase OVERTEMPERATURE Excess heatsink temperature in power supply or output amplifier due to high ambient temperature or internal component failure CONTROLLER FAILURE The AC Power Controller has a CPU failure which is monitored by a watch dog timer POWER OFF Power remains off input breaker off 80 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 8 8 PROGRAM EXAMPLES Table 3 19 lists some typical strings Each one illustrates the versatility in programming which is a feature of the power source The strings listed transmit the information with the fewest possible characters Decimal points need not be included when followed by zeros Spaces may not be included anywhere in the string Table 3 19 SAMPLE PROGRAMMING STRINGS to 2 amperes and enable external sync SET SYNI lt CR gt lt LF gt Phase B to 100 volts and current limit to 2 FNC ACS CHO2 SET CURL 2E1 SET FREQ4E2 SET amps VOLT100 lt CR gt lt LF gt All three phases to 2 5 amps average current FNC ACS CH00 SET CURL2 5 lt CR gt lt LF gt limit FTH FREQ lt CR gt lt LF gt Query time of measurement of voltage FNC ACS VOLT lt CRI gt lt LF gt INX VOLT lt CR gt lt LF gt 81 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 4 CALIBRATION PROCEDURE 4 1 GENERAL The calibration is divided into two categ
40. a 180 volts range A range change will take place if the power source is not set for the high range The output voltage will drop temporarily to allow for range change and after 5 seconds the test will begin The output will go to 180 volts for 10 msec and will drop gradually to 115 volts in 81 25 msec After 5 seconds a range change will take place to the original setup This is a simultaneous test to all selected phases 2 Transient low voltage test Figure 7 MIL7OADJAJIBIICI VOLTage LOW The output voltage will drop to 80 volts for 10 msec It will gradually rise to 115 volts in 81 25 msec This test is a simultaneous test to all selected phases 3 Transient voltage test MIL704D A B C TRANsient VOLTage This test will combine High voltage transient and Low voltage transient There will be a pause of 5 seconds between tests If the voltage range is below 180 volts the High voltage transient test will not take place 123 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 4 Transient high frequency test Figure 8 MIL704D TRANsient FREQuency HIGH This test will step up the frequency from 400 Hz to 425 Hz The frequency will step down to 400 Hz in the following sequence 425 Hz for 1 second 420 Hz for 4 seconds 410 Hz for 5 seconds 407 Hz for 4 seconds 5 Transient low frequency test Figure 9 MIL704D TRANsient FREQuency LOW This test will step down the frequency from 400
41. all interfaces ex default to unlisten and untalk An ASCIl line feed Local Lockout A GPIB message when asserted will inhibit the instrument from going to local if the CLR LOC key is pressed Remote Enable A logic line on the GPIB asserted by the controller REN enables an instrument to go to local when addressed Selected Device Clear A GPIB message to initialize an addressed instrument to it Power on state 49 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 3 11 UNIT ADDRESS GROUP BINARY ADDRESS HEX 4 DECIMAL ASCII 20 32 SP OONDOARWN O oO 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 50 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 7 2 MESSAGE FORMAT The message sent to the AC Power System must have the following format for each parameter where H Three letter mnemonic for each message header D Optional header extension to specifv output ref Table 3 5 through 3 8 Alpha numeric or for message header argument Optional ASCII for exponent identification Exponent sign Exponent value 0 63 Message string delimiter CR LF or LF ozi More than message header with its corresp
42. argument less than the initial value the ramp will decrement from the initial parameter A ramp or step operation can be started at anytime by the GPIB message Group Execute Trigger GET The operation will wait for the Group Execute Trigger when the TRG header is added to the string The following example will decrement the output amplitude of phase A only from 120 in 1 volt 2 sec steps to 100 volts after a Device Trigger AMP A 120 DLY 2 STP 1 VAL100 TRG 57 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K The following example will simultaneously ramp the Frequency from 400 to 500 Hz at a rate of 0 1 Hz per second and the Amplitude from 5 volts in increments of 5 volts per step RNG270 AMP5 FRQ400 STP 1 DLY1 VAL500 5 A GPIB Service Request will be generated at the end of a ramp if SRQ2 is included in the setup string Aramp operation can be stopped at anytime by the GPIB Group Execute Trigger 3 7 11 TO PROGRAM A REGISTER REG The REG header is used to load the register specified by the following numeric data with the preceding data The numeric value is from 0 to 15 The PRG header is identical to the REG header and is included to standardize other AC power controllers The following example will load a ramp program that will step the voltage from 10 to 115 volts with 1 volt 5 sec steps at 400 Hz into register 0 FRQ400 AMP10 DLY 5 STP1 VAL115 REGO 3 7 12 TO RECALL A REGISTER REC The REC he
43. consult the factory Table 6 1 TROUBLESHOOTING PARAGRAPH PROBLEM PAGE 6 2 Poor Voltage Accuracy 111 6 3 Poor Output Voltage Regulation 111 6 4 Overtemperature Lamp On 111 6 5 Overload Lamp On 112 6 6 Can t Program AC Power System on GPIB 112 6 7 Distorted Output 112 6 8 No Output 113 6 2 POOR VOLTAGE ACCURACY If the power source exhibits poor programmed voltage accuracy the following item may be at fault 1 The calibration is incorrect SOLUTION Calibrate the output Refer to Paragraph 4 3 1 page 82 6 3 POOR OUTPUT VOLTAGE REGULATION If the AC Power System exhibits poor voltage regulation the following item may be at fault 1 The External Sense lines are not connected at the same point monitored by the external voltmeter used for load regulation check SOLUTION Connect AC voltmeter to External Sense lines 6 4 OVERTEMPERATURE LAMP ON If the power source OVERTEMP lamp is on the following may be at fault 1 Ambient temperature is too high SOLUTION Operate power source between 0 and 35 C 2 Fan or ventilation holes are blocked SOLUTION Remove obstructions 3 Fan not working SOLUTION Replace fan Consult factory 111 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 6 5 OVERLOAD LAMP ON The OVERLOAD lamp comes on when the output load current has exceeded the programmed current limit value For all power systems except the 2750L 3P and the 4500L 3P mis adjustment of either the Amplifier Gain or
44. left intentionally blank 136 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 10 RTCA DO 160C 10 1 GENERAL The RTCA DO 160C option is capable of performing all sections of RTCA DO 160C for the AC Source signal 10 2 INITIAL SETUP Nominal parameters for the AC Power source shall be as follows Output Voltage 115V L N Output Frequency 400 Hz Output Phase Angle B 240 C 120 10 3 TEST PERFORMED 10 3 1 NORMAL STATE Normal State Voltage and Frequency test Voltage Unbalance test Waveform Distortion test Voltage Modulation test Frequency Modulation test Momentary Power Interrupt Undervoltage test Voltage Surge Overvoltage test Nook WDM gt 10 3 2 EMERGENCY TEST Emergency Voltage and Frequency test Voltage Unbalance test 10 3 3 ABNORMAL TEST Abnormal Voltage and Frequency test Momentary Undervoltage test Voltage Surge test 10 4 KEVPAD Refer to Figure 1 for Kevboard Flow Chart To perform a test from the kevboard the following kev sequence is required 160 ENT The following screen will appear 00160 Sel A ENT all CLR EXIT Pressing the or combination selects the phase in test Press ENT without the phase select for simultaneous three phase test 4275 INSTRUCTIONAL MANUAL August 2001 The following screen appears for a short time Test CLR to Reselect The next screen is Applv Nom ou
45. of the 300 VDC fuses before replacing the amplifier Refer to Figure 6 1 for the location of the fuses Fuse F1 is for phase 2 for phase is for phase CAUTION Capacitor C1 may have up to 350 VDC after the input circuit breaker has been turned off Before inspecting fuses F1 F2 and discharge C1 C1 may be discharged through a 5 ohm power resistor If itis determined that an amplifier module must be replaced perform the following procedure 1 2 Turn off the input circuit breaker Remove the AC Power System top cover Remove the four 6 screws that hold the insulator that covers the amplifier module 1 A2 and Remove any of the three amplifiers by sliding it up and over the guide posts The amplifier may be replaced by following this procedure in reverse order Check the amplifiers associated 10 amp and fuse and replace it if necessary Refer to Figure 6 1 for the location of the fuse F1 F2 and F3 are for the phase A B and C amplifiers respectively After an amplifier has been replaced readjust its gain and the 1 phase adjustment Refer to Section 4 page 82 jid INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Figure 6 1 MODULE LOCATION
46. of the AC Power System and 100 0 VRMS on the primary of the output transformer Each Amplifier Module requires 300 DC 15 VSW and the 15 VSWI supplies The 300 VDC supply comes from the Input Power Supply through a 15 amp fuse on the Power Mother Board The Amplifier Module has a thermoswitch mounted on its heatsink If the heatsink temperature reaches 1002C control signal is sent to the Oscillator Module A logic low on th over control line will cause the error message TEMP FAULT to be generated 5 9 OSCILLATOR MODULE The Oscillator Module is identified with the reference designator 11 The module consists of three printed circuit assemblies These three assemblies are interconnected with a small mother board A11A2 The oscillator Display Assembly connects to the Oscillator Module with a short ribbon cable The Display Assembly is mounted on the front panel The block diagram of the Oscillator Module is shown in Figure 5 2 Figure 5 2 OSCILLATOR MODULE BLOCK DIAGRAM OSCILLATOR MODULE PHASE B C BOARD OTHER BOARD A4 PHASE A REF BOARD AS E88 83 Ae CPU GPIB BOARD A3 Lm DISPLAY MODULE SYSTEM INTERFACE a A13 CABLE 1 0 GPIB 5 10 CPU GPIB BOARD The CPU GPIB board A11A3 provides the control and measurement functions of the module A microprocessor circuit accepts commands
47. only non operational code no op in a string is an ASCII space Numeric expressions may be represented by explicit decimal values e g 115 0 or exponential values e g 0 115E3 The exponent field may be either a one digit or two digit form e g E1 or E01 signed or unsigned with a range from E 24 to E 24 68 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K STIMULUS STRING FNC gt ACS gt gt gt gt SET gt gt VOLT gt lt value gt lt CR gt lt LF gt gt CH01 gt gt SRX gt gt FREQ gt gt CH02 gt gt SRN gt gt PANG gt gt CH03 gt gt CURL gt gt SYNI gt NOTE There is no value for SET RST gt ACS gt gt 00 gt lt CR gt lt LF gt gt CH01 gt gt CH02 gt gt CH03 gt gt gt 15 gt gt CH00 gt lt CR gt lt LF gt gt OPN gt gt CH01 gt gt CH02 gt gt CH03 gt GENERAL CIIL STRINGS gt gt 1 gt gt lt gt lt 1 gt gt gt gt IST gt gt STA gt SENSOR STRINGS FNC gt ACS gt VOLT gt 00 gt lt CR gt lt LF gt RST gt FREQ gt gt CH01 gt gt PANG gt gt CH02 gt gt CURR gt g
48. output power on phase A of 80 5 watts The power of either Phase A B or C may be measured 3 8 4 8 APOW Noun modifier APOW apparent power measurement included in a string instructs the power source to measure the apparent power output of the power source in volt amperes VA The strings to initiate the measurement are as follows FNC ACS APOW CH01 CR lt LF gt FTH APOW lt CR gt lt LF gt The response from the power source is 78 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K lt 5 gt 65 5 lt CR gt lt LF gt The foregoing assumes an apparent output power on phase A of 65 5 VA 3 8 5 NORMAL CONDITION RESPONSES All normal condition responses of the power source to requests from the bus controller either status or measurement requests begin with an ASCII space SP In the following examples of bus controller power source exchange L indicates the power source is listen addressed and T indicates it is talk addressed When the power source is requested to measure one of the parameters identified by a noun modifier e g VOLT the following strings are sent and received by the bus controller L FNC ACS VOLT CH01 CR lt LF gt L INX VOLT lt CR gt lt LF gt T lt SP gt default time out lt CR gt lt LF gt L FTH VOLT lt CR gt lt LF gt T SP 115 5 lt LF gt When the power source receives an STA OP code after a CNF OP code its normal response is an
49. the default voltage range is the Low Range If an 8 is entered the default voltage range will the High Range To make the High Range the default continue the key sequence with 8 PRG ENT To program the default voltage perform steps 1 through 3 Next enter the key sequence 2 9 ENT A At this point the default voltage from 0 to 5 may be entered If a value of less than 5 volts is entered the output may fault when a voltage is programmed to a value that is less than 50 of full scale To make 5 volts the default voltage continue the key sequence with 5 PRG ENT To program the default current limit perform steps 1 through 3 Next enter the key sequence 2 9 ENT At this point any value may be entered up to the maximum current available per phase To make 5 amps the default value continue the key sequence with 5 PRG ENT 3 5 17 TO PROGRAM 1 OR 3 PHASE MODE MOD 30 MOD Option The MOD selection is an option for the AC Power System When the option is installed the AC Power System may be programmed to either be a 1 phase or a 3 phase power system The MOD screen displays the output configuration of the power system 1 phase PHS1 or 3 phase PHS3 To program the power system to the 3 phase output mode enter the following key sequences 45 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Select the MOD screen 30 ENT Program the 3 phase mode 3 PRG ENT The last mode programmed for the power system will be
50. the power source tracks the frequency and phase of the external signal Note that its phase may be offset from the SYNC input see paragraph 3 8 4 3 The frequency of the external signal is reported with the following set of strings L FNC ACS FREQ CR lt LF gt L INX FREQ lt CR gt lt LF gt T lt SP gt default time out value reported lt CR gt lt LF gt L FTH FREQ lt CR gt lt LF gt T lt SP gt measured value of external sync frequency reported lt CR gt lt LF gt In the above L indicates the power source is listen addressed and T that it is talk addressed The INX OP code in the above series of strings may be omitted if the time data is not required 3 8 4 6 CURR The CURR current measurement noun modifier s single function is to measure current The strings to initiate the current measurement of Phase B are as follows FNC ACS CURR GHO2 lt LF gt FTH CURR lt CR gt lt LF gt The current of Phase A can be measured with channel designators CHO1 CHO2 or respectively 3 8 4 7 POWR Noun modifier POWR power measurement is included in a string to instruct the power source to measure the power output of the power source The strings to initiate the power measurement are as follows ACS POWR CH01 CR lt LF gt FTH POWR lt LF gt The response from the power source is lt SP gt 80 5 lt CR gt lt LF gt The foregoing assumes an
51. volts for 5 seconds to 118 volts for 5 seconds The unselected phases will remain at 115 volts 2 Steady state voltage unbalance test Figure 2 MIL704D A B C STEady state VOLTage UNBalance This test will change the output for phase A from 115 volts to 112 volts for 5 seconds and to 118 volts for 5 seconds The test will repeat itself for phase B and phase C if they are selected 3 Steady state voltage phase difference test Figure 3 122 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 8 6 2 MIL704D A B C STEady state PHASe DIFFerence This test will change phase B program phase angle if it is selected from 240 degrees to 236 degrees for 5 seconds and to 244 degrees for another 5 seconds The test will be repeated for phase C if it is selected 4 Steadv state waveform distortion Figure 4 MIL704D A B C STEady state WAVeform DISTortion This test will generate a 5 distortion on the selected phase for 5 seconds 5 Steady state frequency test Figure 5 MIL704D STEady state FREQuency This test will change the programmed frequency from 400 Hz to 393 Hz for 5 seconds then to 407 Hz for 5 seconds 6 Steady state test MIL704D A B C STEady state This test will perform all the above five tests in the same order above A 5 second pause between tests is asserted TRANSIENT 1 Transient high voltage test Figure 6 MIL704D A B C TRANsient VOLTage HIGH This test requires
52. 0 4009 740 1 ASSV AUX POWER SUPPLV 16067 1 0 4009 743 1 ASSV INPUT PWR SUPPLV 16067 1 0 A8 4009 732 1 PC ASSV MOTHER CTRL 16067 1 0 9 4009 738 3 ASSV CURRENT LIMIT 16067 1 0 11 4009 425 5 MODULE ASSY OSC 16067 1 0 12 4009 707 1 ASSV INDICATOR 16067 1 0 B1 241178 FAN 6 48VDC 45A 63227 1 0 B2 241175 FAN 4 48VDC 23936 1 0 C1 611295 CAP AL 39001 400V 80031 1 0 4 1 270176 20 250 71400 1 0 4 2 270176 FUSE 20 250 71400 1 0 4 270176 20 250 71400 1 0 ASSEMBLV REPLACEABLE PARTS 27501 TOP ASSEMBLY 4009 471 7 TOP ASSEMBLY NO WITH UP OPTION 27501 ASSEMBLY 4009 472 2 SEQ COMPONENT DESCRIPTION VENDOR QTV 1 4009 456 2 HEATSINK ASSY SW 16067 1 0 2 4009 456 2 HEATSINK ASSV SW 16067 1 0 A3 4009 456 2 HEATSINK ASSV SW AMP 16067 1 0 4 4009 724 1 55 16067 1 0 5 4009 739 1 ASSV POWER SUPPLV 16067 1 0 A5 UP OPTION 4009 727 2 PC ASSV LOW VOLT POWER SPLY 16067 1 0 6 4009 733 1 ASSV RANGE 16067 1 0 A7 4009 740 3 PC ASSV AUX POWER SUPPLV 16067 1 0 4009 743 1 ASSV INPUT PWR SUPPLV 16067 1 0 A8 4009 732 1 PC ASSV MOTHER CTRL 16067 1 0 9 4009 738 6 ASSV CURRENT LIMIT 16067 1 0 11 4009 425 5 MODULE ASSV 16067 1 0 12 4009 707 1 ASSV INDICATOR 16067 1 0 1 241178 6 48
53. 0L 1P input 29 Amps 6000L 3P output 35 Amps 6000L 1P output 40 Amps Frequency 47 to 440 Hz Efficiency 75 typical Surge Current turn on 252 178 Amps 100 Amps for 6000L SUPPLEMENTAL OUTPUT SPECIFICATIONS Full current range B OUTPUT CURRENT 2kHz to SkHz Up to 2 kHz Se e OUTPUT VOLTAGE Output noise voltage 20 KHz to 1 MHz at full load 200 millivolts tvpical 80 millivolts tvpical for 60001 Voltage temperature coefficient 0 02 volts per C Voltage stabilitv 24 hours at constant line load and temp 0 015 of full scale Voltage Settling Time from start of voltage change from 5 0 VRMS or higher voltage to a higher voltage to within 2 of final value No load 16 milliseconds Full load 0 3 seconds 16 milliseconds to within 15 of final value Steady State Output Impedance ohms voltage range x 0 0005 Full load current Fe INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Frequency Temperature Coefficient 5 ppm of value per Frequency Stability 15 ppm of value per year Isolation Line input to output gt 500 VRMS Front panel controls Power On Off circuit breaker Keypad 20 key keyboard Analog Meter Phase Selection Switch Bus IEEE 488 GPIB Subsets SH1 AH1 T6 L3 SR1 RL2 DC1 DT1 Codes and Formats Numeric Representation NR1 NR2
54. 0L P August 2001 Rev K 4 Depress the MNU key several times until the configuration menu screen is displayed CFG 16 ALM 17 FLM 18 CLM 19 5 Enter the key sequence 13 ENT to access the CAL VLT screen 6 If all phases of the voltage measurement are to be calibrated to 135 0 enter the key sequence 135 PRG ENT After about 5 seconds the volt measurement function will be calibrated for all three phases If only one phase is to be calibrated to 135 0 volts ex phase A enter the key sequence 135 A PRG ENT 89 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 Rev K EQUIPMENT HOOKUP FOR PERIODIC CALIBRATION Figure 4 2 1 100021 3 1 10009 1 9 1000 2 9 1000 2 1 100661 31891 WU33 6 100 61 S38 0901 33333 1 2 10006 2 10006 T 10067 U 10067 SJAIM AVSLSNI 15 45 OL 14124 38 15 WAT 29 JLN D HILIALIOA o4 NO9 1114 431515 INdLNO IV 431545 3 0 U v vu ly O 49 e O 22 D1 WAG A 9v v 43171041409 3NDIV 131280 HIIM 006p 40 50193 jSN3S VN331X3 IH 8 or 2 pT 90 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P
55. 1 Steady St Menu 2 Transient Menu 3 Abnormal Menu 4 Emergency Menu 5 MIL704D Test 6 Return If key 1 is selected Steady State from the Main Menu the following Menu will appear 1 Voltage Test 2 Unbalance Test 3 Phase dif Test 4 Wave dist Test 120 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 5 Frequency Test 6 Steady St Test 7 Return If key 2 is selected Transient from the Main Menu the following Menu will appear 1 Volt Trns Menu 2 Freq Trns Menu 3 Transient Test 4 Return If key 1 is selected from the Transient Menu the following Menu will appear 1 High Volt Test 2 Low Volt Test 3 Volt Trns Test 4 Return If key 2 is selected from the Transient Menu the following Menu will appear 1 High Freq Test 2 Low Freq Test 3 Freq Trns Test 4 Return If key 3 is selected Abnormal from the Main Menu the following Menu will appear 1 Volt Menu 2 Abnl Freq Menu 3 Abnormal Test 4 Return to Main Menu If key 1 is selected from the Abnormal Menu the following Menu will appear 1 Overvolt Test 2 Undervolt Test 3 Abnl Volt Test 4 Return If key 2 is selected from the Abnormal menu the following Menu will appear 1 Test 2 Underfreq Test 3 Abnl Freq Test 4 Return If key 4 is selected Emergency from the Main Menu the following Menu will appear 1 Emrg Volt Test 2 Emrg Freq Test 3 Emergency Test 4 Return 121 INSTRUCTIONAL MANUAL 2750L P 4500L
56. 11A5 serves several purposes A programmable clock sets the output frequency of the power source Digital to analog converters program references to set the output amplitude of Phases A sine wave generator creates a 1024 step waveform which is filtered to provide the Phase A oscillator signal A external sense amplifier controls the Phase A output amplitude 5 12 PHASE B C BOARD The Phase B C Board A11A4 uses the DC voltage references and programmable clock from the Phase A Ref board to generate the Phase B and C oscillator waveforms External sense circuits control the Phase B and C output amplitudes 5 13 DISPLAY MODULE The Display Board A11A13 is held to the power source by a small panel and is connected through a short ribbon cable It holds the 20 button keyboard and a 32 character LCD display A knob on the board allows the display viewing angle to be adjusted 109 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K This page left intentionally blank 4110 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 6 MAINTENANCE AND TROUBLESHOOTING 6 1 GENERAL This section describes the suggested maintenance and troubleshooting procedures Table 6 1 lists the paragraph titles and page numbers for the Troubleshooting section If the AC Power System does not appear to function normally use this section to isolate the problem If the problem cannot be found using these steps
57. 15 22 4 SET VALUE 8 16 1 1 3 3 3 2 2 6 67 5 135 LOAD RES 2 73 1 36 0 91 RANGE E CURRENT LIMIT PROGRAM VALUE 20 4 SET VALUE 21 4 43 8 65 2 200 400 LOAD RES 24 12 RANGE CURRENT LIMIT PROGRAM VALUE 6 6 13 2 SET VALUE 7 14 21 4 Table 4 1 SETUP LOAD VALUES 0 2 4 1 8 0 86 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K MODEL 2750L 1 3 2750L 1 1 6000L 3 12000L 2 3 6000L 1 18000L 3 1 18000L 3 3 VA PER PHASE 1000 3000 2000 4000 6000 135 270 LOAD RES 18 2 6 07 9 11 4 55 3 03 1 01 RANGE CURRENT LIMIT PROGRAM VALUE 6 1 12 24 36 100 SET VALUE 6 4 19 3 12 8 25 6 38 5 107 156 312 LOAD RES 24 3 8 12 13 4 05 1 35 RANGE CURRENT LIMIT PROGRAM VALUE 4 5 13 20 30 90 SET VALUE 4 8 14 4 10 32 96 8 7 21 5 10 6 6 2 2 16 24 72 17 3 26 78 8 1 5 67 5 135 LOAD RES 4 55 1 51 RANGE CURRENT LIMIT PROGRAM VALUE 12 36 SET VALUE 12 8 38 200 400 LOAD RES 40 13 3 RANGE CURRENT LIMIT PROGRAM VALUE 4 12 SET VALUE 4 3 13 Table 4 1 SETUP LOAD VALUES continued 10 20 8 8 7 87 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 4 3 PERIODIC CALIBRATION The following periodic calibration adjustments should be performed on a 1 year interval 4 3 1 VOLTAGE CALIBRATION Apply power top the AC Power System and allow at least fifteen minutes for temperature stabilization Program the output to 60 Hz 135 volts and perform the following step
58. 17 J7 18 J7 19 J7 20 J7 21 J7 22 J7 23 J7 24 Rev K ANALOG COMMON This is the common for all analog signals on the connector MR B This is the input signal to the phase B amplifier from the internal oscillator drive signal Make no connection to this pin except for troubleshooting ANALOG COMMON See J7 1 CS Current sum for the phase output Make no connections to the pin CT COMMON OS B This is the output from the internal phase B oscillator Use this pin as an input if an oscillator is not installed A 5 0 VRMS signal will generate a full scale output voltage ANALOG COMMON See J7 1 CL B A DC level from the oscillator used to set the current limit for phase RPV This input is used for an optional Remote program of the output With this option the output voltage may be controlled with a DC voltage ovrtemp A logic low output to indicate an overtemperature condition Make no condition to the pin cnr Output relay control indication This is an output logic line that indicates the state of the output relay A logic low indicates the output relay is open make no connection to the pin FLT C Make no connections FLT A Make no connections STB LO Function Sync Low signal This is the emitter lead of an optically isolated NPN transistor The internal power controller turns this transistor on to indicate a change of programmed values EX SYNC LO External Sync Low signal This is the ground ret
59. 3 TP3 None R1 AMPA None R1 AMP None R1 AMP Monitor voltage for reference Same voltage as MASTER TP10 Monitor voltage for reference Same voltage as MASTER TP2 Monitor voltage for reference Same voltage as MASTER TP3 13500L 3 1 180001 3 1 MASTER SLAVE 1 SLAVE 2 10 2 10 2 10 2 1 1 1 R1 B R1 AMP C R1 AMPA 1 R1 AMP Monitor voltage for reference Same voltage as MASTER TP10 Same voltage as MASTER TP10 Same voltage as MASTER TP10 13500L 3 3 9000L 2 2 180001 3 3 Not for 90001 2 2 SLAVE 1B SLAVE 1 TP10 TP2 TP3 TP10 TP2 TP3 TP10 TP2 TP3 None R1 R1 AMP None R1 R1 AMP None R1 R1 AMP C Monitor voltage for reference Same as MASTER TP10 Monitor voltage for reference Same as SLAVE 1B TP10 Monitor voltage for reference Same as SLAVE 1C TP10 27000L 6 1 MASTER 99 Monitor voltage for reference INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SYSTEM LOAD SOURCE TEST POINT ADJUSTMENT ADJUST FOR 20 1V Current Limit Board IF NEEDED TP2 R1 AMP Same voltage as MASTER 10 R1 SLAVE 1 10 R1 AMPA x TP2 R1 AMP B R1 AMP C SLAVE 2 TP10 R1 AMPA 2 R1 AMP R1 C SLAVE
60. 3 4 ABNORMAL STATE VOLTAGE SURGE DO160 A B C ABNormal state VOLTage OVER This test requires an output voltage range of 180 volts If the power source is a dual voltage range this test will select the upper voltage range if the lower voltage ranges is less than 180 volts The output voltage will rise to 180 volts for 100 msec and will drop to 148 volts for 1 sec before it returns to 115 volts 142 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Figure 1 gt DO160 SEL A B C ENT ALL CLR EXIT TEST RESELECT APPLV NORM OUTPUT PRESS ENT PRESS MNU SELECT TEST MNU 1 NORMAL St MENU 2 EMERGENCY MENU 3 ABNORMAL MENU 4 RETURN 1 VOLT FREQ MENU 1 Emg V F Menu 1 NORMAL St MENU 2 Emg UNBAL 2 EMERGENCY MENU 3 RETURN 3 ABNORMAL MENU 4 RETURN 2 UNBALANCE TEST 3 VOLT MOD TEST T 01 4 INT TEST 5 VOLT SURGE TEST 6 WAVE DIST TEST 1 7 FREQ MOD TEST 1 Emg Vunder 1 Ab Vunder 8 RETURN 2 Emg Vover 2 Ab Vover 1 3 RETURN 3 RETURN 1 UNDER VOLT TEST VER VOLT TEST 3 RETURN ENTER TEST NUMBER 1 15 amp ENT ENTER TEST NUMBER 1 15 amp ENT 143 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K FIGURE 2 T 21 be C 21
61. 353 Q JIMDA Ov 111 0 103N 2188s VUL 5999 Qoo a 221201 Doo U 002 e 149 lt 0 g D ox 62 EET 50 15 2 39914 6 dAl 39591 aD 21222 2 2 JAIA 39 51 9 DAY Al e Tj ll Ne Ed gt oe lt lt lt lt SIMDd 109100 29 CASWOLSND A8 MAHSINSN AD Y zx M yyy E NM 290 18 IVNIWAJL nO IAS 8155 NI 1 zijiet veal 8383 aeg jese 532914 541 NI 01 308301 lt gt lt gt gt gt ool e If BE BE 68 a Mi 5 wa 5 2 Bee 5 Go NI 2 5 E NI vg 8 NI 8 a Li NI Od 1 3 NI 5 5 i SISSVH2 4 SISSYHI d u IWIN h IWANI h 12 2 24 meh og ag Ov NI Banta 2v 81 541 noun 42120 D uua Sounds 7006 1009 170 29 Nand 0597 0009 100 83 08 BSJALU 9v 181 59 191 y 020 NI 34 NI Vg 44 NI 80 NI 3 4 3952 20 NI Jf oi sae OND
62. 4 FUNCTION STROBE COMMON Figure 3 3 FUNCTION STROBE CONNECTIONS 3 5 FRONT PANEL PROGRAMMING 3 5 1 KEYPAD The front panel keypad is enabled whenever the REMOTE light is not lit The AC Power System may be manually programmed by using the keypad and observing the front panel LCD display Figure 3 4 shows the front panel keypad Table 3 4 lists the key and a brief description While viewing any Output Parameter screen Ref Table 3 5 the screens may be viewed in increasing order by depressing the MON key and in decreasing order by depressing the PRG key While viewing the Measurement Screens the MON and PRG keys work in a similar fashion For example if the AMP parameter screen is displayed the FRQ screen may be displayed by pressing the MON key one time The display will be switched back to the AMP screen by pressing the PRG key SNW SQW INT EXT 55117511 JI MNU 2129172 277 3 4 31 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 KEY SNW 0 SQW 1 INT 2 EXT 3 4 through 9 MNU 7 REG 2 CLR SRQ MON PRG ENT Rev K DESCRIPTION Inputs the value 0 for all output parameters or to select screen 0 when fol
63. 40 0 29 120 0 CHI 2 4 3 CURL BO GH12 3 amp 4 FREQ 4000 DEV OUTPUT OPEN SOURCE CH3 pus SYNC INTERNAL CURRENT LIMIT FAULT A9 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 8 3 8 FTH The FTH fetch OP code function fetches data from the power source for the parameter indicated by the noun modifier of the previous string For example the following FNC string is first sent FNC ACS VOLT 1 lt CR gt lt LF gt Then the measurement value is requested with FTH VOLT lt CR gt lt LF gt Assuming that the output of phase A is 115 5 volts the power source responds with lt SP gt 115 5 lt CR gt lt LF gt The FTH OP code may be repeated for the same FNC noun modifier An INX string may be inserted between the two strings as described in 3 8 3 7 if the time to accomplish the measurement is required If the channel indicator in the above example had been CHOO the power source would have responded with the values of all three phases in the order of A B and C 3 8 3 9 STA The STA status OP code instructs the power source to transfer its output message to its output buffer The message is then transmitted to the Bus Controller when the power source is addressed to talk Table 3 17 lists all of the possible status messages generated outside of confidence testing All confidence testing messages are shown in Figure 3 7 If the power source is operating correctl
64. 500L P 6000L P August 2001 Rev K Figure 10 11 ABNORMAL OPERATION 180 LLL 160 figure 10 140 9 o 125 120 Ge eS us ee 100 BO ch figure 11 60 01 05 0 1 5 1 0 7 0 10 Time from of Over voltage undervoltage seconds 132 INSTRUCTIONAL MANUAL August 2001 Figure 12 13 Frequency Hertz 470 460 450 440 430 425 420 410 400 390 380 375 370 ABNORMAL FREQUENCY 1 2 3 4 5 6 7 8 9 10 11 12 Time from onset of Overfrequency or Underfrequency seconds 133 13 14 2750L P 4500L P 6000L P Rev K 407 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Figure 14 EMERGENCY VOLTAGE 122 115 104 Emergency Frequency figure 15 440 400 360 all time interval are 5 seconds 134 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION9 2 OPTION 2P 9 1 GENERAL The output appears from the Phase A and Phase C output terminals for this option Phase C leads Phase A by 90 degrees 135 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K This page
65. 66 9 vu amp 12 Inaano ve 18 gt ray Nadana 12 0 d 0139 Gd jet ray N3dang8 19 28 949 o ELI IL 210113 5 uU BJLIWIT IN3WHNnO 48 9v IM qayna 219 ASHLOW IDA4LNDI 2 89 21118 ca AJHW3SSV AVIS 3DNVU 2 LNSYNND 26 243 prm plu o bi 79 D al e o O Q 0119710935 08 Q Id 29 V 90 29 v0l ev V cota 4 o O NDILVINDIN ur Q IN ev d NIVD vold 29 135330 Sota ev 343 2 0 aq 183 O O NDILVINDIN 92 O la ev ff 99 018 ev 19 135440 019 19 ij 84 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K CAUTION Voltages up to 480 VAC are available in certain sections of this power source This equipment generates potentially lethal voltages DEATH on contact may result if personnel fail to observe safety precautions DO NOT touch electronic circuits when power is applied 85 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 4500L 1 3 9000L 2 3 4500L 1 1 9000L 2 1 13500L 3 1 27000L 6 1 9000L 2 2 13500L 3 3 27000L 6 3 VA Per Phase 1667 3333 5000 10000 135 270 LOAD RES 10 9 5 46 3 64 RANGE x CURRENT LIMIT PROGRAM VALUE 10 20 SET VALUE 10 7 21 5 156 312 LOAD RES 14 59 7 3 4 86 RANGE CURRENT LIMIT PROGRAM VALUE 7 4
66. 8 0 to 37 04 18 52 0 01 37 04 0 to 111 2 55 6 0 1 111 2 0 to 44 44 22 22 0 01 44 44 0 to 133 4 66 7 0 1 133 4 0 to 74 08 37 04 0 01 74 08 0 to 222 2 111 1 0 1 222 2 Current Limit Range VA per phase Voltage Range For UP option refer to 50 C current values Accuracy 0 to 15 of programmed value Independent control for each output phase Customer access to Initial Default values for Frequency Voltage Voltage Range and Current Limit Register linking Calibration of Phase Ramp Sweeps of Voltage Service request GPIB Group execute trigger GPIB Status reporting Remote Shutdown Output Relay External sense Function Strobe Output External Sync OTHER PROGRAMMABLE FUNCTIONS Output Voltage and measurement functions Frequency Phase and Current Limit up to 2 functions simultaneously Service Request for output faults syntax errors and end of measurement Trigger setups and terminate programs Serial Poll Status Byte and error messages A logic low input will program the voltage to 0 and open the Output Relays Controlled by GPIB Normally open at power up Closed when the first function is programmed from the front panel keypad Compensates for up to a 10 drop in the load lines A 400 uS logic low output when any output is programmed A 5 volt 45 to 5 KHz 5 milliamp TTL input The output will track the frequency and 9 INSTRUCTIONAL MANUAL August 2001 Indicators Dimensions
67. ABNormal state VOLTage OVER 139 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 10 6 TEST SPECIFICATION 10 6 1 NORMAL STATE 10 6 1 1 NORMAL STATE MINIMUM VOLTAGE AND FREQUENCY TEST DO160 A B C NORMal state VOLT_FREQ MINimum This test will change the output voltage for single phase from 115V to 104V and for three phase from 115V to 105 5V and the frequency from 400 Hz to 380 Hz The test will last for 30 minutes The CLR Key in local operation will terminate the test at any time Group execute trigger will terminate the test remotely The unselected phases will remain at 115 volts 10 6 1 2 NORMAL STATE MAXIMUM VOLTAGE AND FREQUENCY TEST DO160 A B C NORMal state MOLT FREQ MAXimum This test will change the output voltage for single phase from 115V to 122 volts and from 115V to 120 5 volts for three phase and the frequency from 400 Hz to 420 Hz The test will last for 30 minutes The CLR Key in local operation will terminate the test at any time Group execute trigger will terminate the test remotely The unselected phase will remain at 115 volts 10 6 1 3 NORMAL STATE VOLTAGE UNBALANCE DO160 A B C NORMal state VOLTage UNBalance This test will change the output voltage for each phase from 115 volts to 112 volts and to 118 volts The test for all three phases will last 30 minutes The test can be terminated at any time 10 6 1 4 NORMAL STATE WAVEFORM DISTORTION D0160 A B C NORMal state WAVe form
68. ASCII space lt SP gt An example of the strings transmitted and received is L CNF lt CR gt lt LF gt L STA lt CR gt lt LF gt gt lt LF gt The power source accepts the STA OP code after any string which is sent to it For example L FNC ACS SET VOLT115 SRX VOLT 135 SRN VOLT5 lt CR gt lt LF gt L STA T SP lt LF gt 3 8 6 ABNORMAL CONDITION RESPONSE When an abnormal condition has been detected by the power source its response to the STA OP code will begin with an ASCII The abnormal condition may be in the power source or specifically in the power source controller In the examples that follow MOD is an abbreviation for MODULE and refers to the power controller DEV is an abbreviation for DEVICE and refers to the power source excluding the power controller The response string for an abnormal condition is 7 501 lt SP gt DEV lt SP gt message lt CR gt lt LF gt The status contained in message may be similar to the following OUTPUT 1 amp 02803 VOLT FAIL OUTPUT CH01 amp 02 amp 03 TEMPERATURE FAIL CONTROLLER 1802803 FREQ FAIL Where a amp means When an STA OP code is transmitted after any string the complete abnormal response may be similar to FOZASCO1 SP MOD lt SP gt message lt CR gt lt LF gt 79 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K The status contained in message
69. Amplitude AMP is less than the full scale voltage range The low frequency limit can be determined from the following formula FRQ 45 AMP Voltage Range 3 5 5 TO PROGRAM OUTPUT PHASE ANGLE 2 7 Select the Phase PHZ screen by entering 7 Program phase to 5 degree relative the phase 0 5 PRG ENT To enable the External Svnc input and to program phase A to 90 0 degrees relative to the External Svnc input perform 36 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K the following sequence 1 Select the SNC screen 1 ENT 2 Program EXT EXT PRG At this point the phase screen must be accessed by repeatedly depressing either the MON or PRG keys After the Phase PHZ screen is displayed enter the following key sequence to simultaneously enable the External Sync and program phase A to 90 degrees 9 0 A PRG ENT The up and down keys may be used to increment or decrement any or all output phases NOTE The PHZ A value is maintained in nonvolatile memory The last programmed value is retained at power up 3 5 6 TO PROGRAM CURRENT LIMIT CRL 8 The Current Limit can be programmed independently or simultaneously for each phase of the AC Power system 1 Select the Current Limit screen by entering 8 ENT 2 Program all phases to 5 amps 5 PRG ENT 3 5 7 TO PROGRAM VOLTAGE RANGE RNG 4 The RNG screen has two purposes to select a range defined by the range pair selected in th
70. C 01 SET PANG90 SET SYNI lt CR gt lt LF gt The phase A output will still track the SYNC input but will be offset by 90 degrees The phase angles of phases B and C will still be relative to phase A 3 8 4 4 CURL The CURL current limit noun modifier may be contained in a string as an instruction to the power source with SET SRX or SRN Depending on the OP code an output current limit or limits may be programmed or set as to upper or lower limit in or 0 01 ampere increments up to the power source maximum current The channel indicator which precedes the modifier determines which phase or phases will be so set The number which follows the modifier in the string determines the current limit to be programmed FNC ACS 00 SET CURL 2 5 CR lt LF gt 3 8 4 5 SYNI SET SYNI enables the external SYNC input The power source returns to the internal sync mode in the absence of the SYNI noun modifier from any set up string Any channel indicator may be used in the set up string that includes SYNI 77 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SYNI may be used with PANG to program the phase A phase angle relative to the sync signal The following string enables the power source to track the frequency and phase of the external sync signal FNC ACS SET lt CR gt lt LF gt Note that other noun modifiers may be included in the above string While operating in the external synchronize mode
71. C PRG ENT 4 3 5 REMOTE MEASUREMENT CALIBRATION The measurement function of the AC Power System may be remotely calibrated The equipment hookup is the same as before except an IEEE 488 Controller must be used to program the AC Power System The values for the VLT CUR and PWR strings must be derived from the external AC Digital Voltmeters and Current Transformer To calibrate the calibration string measured voltage first program the AC Power System to 135 0 volts and 60 Hz Send the following CAL VLT 1 Desired voltage value for phase 1 To calibrate the measured current send the following string CAL CU R 1 Desired current value for phase 1 92 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K To calibrate the measured power value send the following string CAL PWR 1 Desired power value for phase 1 NOTE 1 May be blank or include an A B or C extension 4 3 6 REMOTE OUTPUT VOLTAGE CALIBRATION The ASCII symbol can be used with a remote calibration to greatly reduce the calibration time The ASCII is used in place of a calibration coefficient to begin the CAL ramp to start at the existing CAL coefficient and ramp up or down for a VAL argument of 255 or 0 respectively The following string will cause the CAL coefficient to ramp down with a delay of 2 seconds per step CAL DLY 2 VALO 93 INSTRUCTIONAL MANUAL August 2001 Figure 4 3 RANGE UTPUT DETERM
72. IBRATION For calibration of power measurement perform the following steps 1 2 Program 60 Hz and 135 0 volts and the maximum Current Limit value If any calibration screen is already displayed the Power Calibration screen CAL PWR be displayed by depressing either the MON or PRG keys and then skip to step 6 If a calibration screen 91 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K is not displayed depress the MNU key several times until the screen shown below is displayed SNC 01 02 WVF 03 RNG 04 3 Enter the key sequence 959 ENT 4 Depress the MNU key several times until the configuration menu screen is displayed as shown below CFG 16 ALM 17 FLM 18 CLM 19 5 Enter the key sequence 15 ENT to access the CAL PWR screen 6 Apply the LOAD RES value from Table 4 1 to the phase A output only Measure the phase A output current with the AC Digital Voltmeter and Current Transformer Measure the phase A voltage from the phase A sense to neutral sense Multiply the voltage and current values to determine the power value Note The load must be resistive for the correct power value 7 On the keypad enter the key sequence Measured phase A power A PRG ENT 8 Repeat step 6 for phase B 9 Repeat step 7 except enter the key sequence Measured phase B phase B PRG ENT 10 Repeat step 6 for phase C 11 Repeat step 7 except enter the key sequence Measured phase C power
73. INE TO CALIBRATE TO CALIBRATE PROGRAM AMP CV R MAKE INITAL FLOW DIAGRAM A REMOTE CALIBRATION MEASUREMENT DETERMINE ERR E ABS V S ABS E 4Z Y SOMETHING WRONG RANGE N ABS Y DELAY STEP 4 SEC CAL gt ROUTINE RANGE ABS lt 2 gt 02 Y DELAY STEP 2 SEC CAL F E ROUTINE RANGE CALIBRATED 94 2750L P 4500L P 6000L P Rev K INSTRUCTIONAL MANUAL August 2001 CAL ROUTINE ABS E2 P 100 Y OF RANGE CAL 0 DLY Dj STP Z VAL C PROGRAM MEASURE DUTPUT S ABSCEDP 100N Y RANGE RETURN Figure 4 3 FLOW CHART continued 95 2750L P 4500L P 6000L P Rev K INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 4 4 NONPERIODIC CALIBRATION If adjustments are required for these nonperiodic calibrations the top cover of the AC Power System will have to be removed A nonperiodic calibration will only be required if a related assembly is repaired or if the performance is out of specification 4 4 1 OUTPUT FREQUENCY CALIBRATION Connect the Frequency Cou
74. It displays phase A relative to an external synchronizing input and phase B and C relative to phase A The resolution is 0 1 degree 3 6 8 ELAPSED TIME ELT 11 This screen displays the total run time accumulated on the AC Power System up to 99 999 hours H Hours M Minutes S Seconds 3 7 REMOTE PROGRAMMING WITH ABBREVIATED PLAIN ENGLISH APE Remote programming through the IEEE 488 Interface GPIB consists of sending the unit address and the proper ASCII alphanumeric characters to identify the parameter and the numerical value or other argument The description of the abbreviations for GPIB messages used in this section are listed in Table 3 10 These abbreviations must not be confused with the device dependent abbreviations used to describe the AC Power System operating parameters ex FRQ Frequency etc 3 7 1 UNIT ADDRESS This is the A value LSN set in the CFG screen The Unit Address 0 through 30 corresponds to the HEX value 20 through 3E Refer to Table 3 11 for the equivalent HEX Binary ASCII and Decimal equivalents The Unit Address is set at the factory to 1 but may be changed by selecting the CFG Configuration screen and setting a new value To select the CFG screen repeatedly depress the MNU key until menu screen 1 is displayed as illustrated below SNC 01 CLK 02 WVF 03 RNG 04 Enter the key sequence 959 ENT Repeatedly depress the MNU key until the menu screen 5 is displayed as illustrated below CFG 16 A
75. L 3 90001 2 3 135001 3 3 18000L 4 3 180001 3 3 Figure 2 2 16 92 76 9 415 gt 532 1 21 439491 90001 2 1 SYSTEM ELIMINATE POWER SOURCES 4 AS amp A6 180001 4 1 270001 6 1 USE 200 DF CABLE 55 4009 230 1 120001 2 1 amp 13500L 3 1 USE 100 AMP TB2A 12000L 2 1 8 18000L 3 D 9000L 2 1 8 135001 3 1 MARATHON PART NUMBER 1422570 LARGER PLACES CSTRANDS 133 89 TBA 27000L 6 1 gt MARATHON PART NUMBER 1432555 SHIPPED WITH POWER SOURCE SYSTEM AWG 6 STRANDED WIRE NO FOR 45001 1 FOR 180001 2 1 13500L 3 1 SYSTEM ELIMINATE POWER SOURCES 4 amp SYSTEM INTERCONNECT SHOWN FOR 270001 6 1 SYSTEM IS NOT TERMINATED FOR 9000L 2 1 AND 120001 2 1 4 FOR 18000L 3 1 3 FOR 90001 2 1 FOR 120001 2 1 1 2750L P 4500L P 6000L P SYSTEM INTERCONNECT CABLE NONE 4009 231 1 4009 230 1 4009 230 1 2 4 5 6 MODELS USED 1 2 1 2 45001 1 120001 2 1 90001 2 1 18000L 3 1 155001 3 1 270001 6 1 SYSTEM 60001 1
76. LM 17 FLM 18 CLM 19 47 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Enter the key sequence 16 ENT The CFG screen will now be displayed Depress the A key to display the present Unit Address It may be changed to any value from 0 to 30 and will be stored in non volatile memory The new unit address will not be updated until power is shut off and reapplied to the power system The following key sequence will change the unit address to 16 16 PRG ENT 48 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 ABBREVIATION ATN CR Rev K Table 3 10 COMMONLY USED GPIB ABBREVIATIONS DEFINITION Attention A logic line on the GPIB asserted only by the controller to indicate the data on the bus represents a bus message An ASCII carriage return Device Clear A universal bus message to initialize all instruments to their power on states End A message conveyed when a talker uses the EOI line with the last data byte of a data string End or Identify A logic line on the GPIB asserted by a talker to indicate the last byte of a data string End of String A delimiter message that consists of a data byte s to indicate the end of a data string Group Execute Trigger A GPIB message to trigger an addressed instrument Go To Local A GPIB message to put an addressed instrument in the local control mode Interface Clear A logic line on the GPIB asserted by the controller to clear
77. LOW DIAGRAM Refer to Figures 5 1 8 5 6 and Top Assembiv Parts List 4009 422 For Reference Designators 74 SER 2 3 VOLT 115 CNF VOLT 28 MEASURED OPEN ALL MEMORY BIT CH1 2 OR 5 CH1 2 OR 3 CH1 2 OR 3 CH1 2 3 4 FREQ 400 FREQ 400 7 9 output Reys SUM CHECK See cone U fe FAULT VOLT 113 VOLT 9117 CH2 PANG 240 N CH3 PANG 120 N TEMPERATURE i 7 CH2 OR 3 RESET RESET RESET SOURCE OUTPUT lt 90V 1 1 STA N OR 3 A Y OSCILLATOR OUT mia 1 7 51 DEV 21 51 DEV gt 4 26 CONTROLLER CPU CONTROLLER FAULT FREQ FAULT RESET RESET An An 21 l 25 STA Su E es 51 DEV Joyyy 7 DEV Jon Y CONTROLLER CONTROLLER CH1 LOW OUTPUT FAULT HIGH OUTPUT FAULT TEMPERATURE gt 3v Nee 4 7 10 22 26 ER log FE ones oon oy PEAR BOLT 2 0 PR bel
78. N SNC The SNC header is used with the EXT argument to synchronize the phase A output to an external sync input The phase A output will be phase referenced to the sync input with the displacement equal to the PHZ A value The following ASCII string will program the phase A output to 0 degree relative to the external sync input and select the external sync mode PHZAO SNC EXT Sending the ASCII string SNC INT will disable the sync input 3 7 15 TO PROGRAM EXTERNAL CLOCK CLK optional The CLK header has an argument of either EXT or INT The CLK header with the EXT argument will make one AC Power System a slave to another system The slave will operate at the same frequency as the master Phase A of the slave will be related to phase A of the master by the PHZ A value of the slave NOTE The clock option is only available if the associated power systems have the LK option The following ASCII string will enable the CLOCK and LOCK inputs to the associated slave AC Power System CLK EXT NOTE If there is no signal at the CLOCK input at the rear panel of the associated power system the output will go to zero volts The ASCII string CLK INT will return the slave AC Power System to its programmed frequency 3 7 16 TO TRIGGER AN OPERATION TRG The TRG header has no argument When the TRG mnemonic is included in a setup string it will delay execution of the string until the GPIB Device Trigger message is sent by the bus controller The TRG h
79. NT EXT Synchronize SRQ 0 10r2 Service Request disable enable or at completion of program and measurements STP From parameter minimum to Define step size in ramp maximum value TLK Any header Set up to talk argument value or measured value when addressed to talk TRG Execute Trigger set up parameters on GPIB GET message VAL From parameter minimum to Final ramp or step value in volts hertz maximum value amps degrees sine wave or square wave WVF SNW SQW Waveform OPN Open output relays CLS Close output relays VLT A B C Used with TLK to request measurement 54 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K HEADER EXTENSION ARGUMENT DEFINITION of the output voltage ELT Used with TLK to request total accumulated runtime CUR A B C Used with TLK to request measurement of the output load current MOD PHS 10r3 Program the output phase configuration PWR Used with to request measurement of the True output power APW Used with to request measurement of the Apparent output power PWF Used with to request measurement of the output power factor PZM Used with to request measurement of the output phase angle FQM Used with TLK to request measurement of the output frequency NOTE If Extension does not follow the header the argument will be applied to all phases 3 7 5 TO PROGRAM OUTPUT VOLTAGE
80. NT key is depressed at this point the AMP would be programmed to and remain at 130 volts The following program will illustrate a dropout to zero volts The program will drop the output to zero volt at 90 degrees for 002 seconds and return to 115 volts This example will cause the Clock to stop for 0 002 seconds For this example the output waveform will start at the same point that it stopped 1 Select the AMP screen and program output to 115 volts 5 ENT 115 PRG ENT 2 Select the PHZ screen and program A to 90 7 ENT 90 A PRG 3 Select the AMP screen and program the dropout voltage to zero volt INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 5 ENT 0 PRG 4 Select the RMP screen Set a delav of 002 seconds and return value of 115 volts 9 ENT A 0 002 PRG C 115 PRG 5 Execute the program by depressing the ENT key Two output parameters may be ramped simultaneously The parameter programmed just prior to entering the RMP A screen will be the independent parameter and will be identified in that screen The parameter loaded prior to the independent parameter will be the dependent parameter The following example will ramp frequency from 360 to 440 Hz at a rate of 2 Hz per 2 second while each 2 Hz step causes the amplitude to go from 10 volts to 210 volts in 5 volt steps 1 Select the AMP screen dependent parameter and program the start to 10 volts 5 ENT 10 PRG 2 Select the FRQ screen independent parameter an
81. OLTage VOLTage VOLTage HIGH FREQuency VOLTage LOW FREQuency IFREQuencv HIGH FREQuency LOW 128 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Figure 1 STEADY STATE VOLTAGE 118 V 115 Phase A B C 108 V ee eee a E 5 5 Voltage Unbalance figure 2 118 115 re 112 V 118 V ni Lt 112 V 118 V 5 5m 112V Voltage Phase difference figure 3 Phase 244 24 Phase B Distortion tactor figure te EX Frequency figure 5 400 393 all time interval are 5 seconds 129 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Figure 6 7 VOLTAGE TRANSIENT 180 figure 6 2 140 2 gt a 9 120 181 1 j 100 figure 7 80 hat EE 0 02 04 06 08 10 12 14 Time from of Transient seconds 130 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Figure 8 9 Frequency Hertz 430 42 42 41 410 40 40 395 390 385 380 375 Rev FREQUENCV TRANSIENT 393 Time from onset of Transient seconds 131 INSTRUCTIONAL MANUAL 2750L P 4
82. SISSvH2 4 TNI SISSVH2 aor h IVANI h dis 11442 Ov Ov 81 eal 30491711950 170 BDIVTIISD INIS MMDA 1059 10009 BAAG 05 BANDA 00597 0009 191 ev 181 1 1 2 600 310438 1 2 600 ASSY 37892 ASSY 37892 NI JD 18964 NI A MINI 30 1894 QNO SISSVHI4 QNO SISSVHI 4 1 Lannea 22 490 Dva Ov 4 wax os 81 eal 35425 inom 3595 123 5019111250 or E were OC TOES vy 181 19 Elei Tah LN 2 141 11234101 0311 38 150 asus TATIVISNI SI 19111250 14 V NIHA 3SN3S JWwN331X3 SSUNOV 39V1 3Hl SI JOVITOA 1041100 GAWNVADDAA 141 19 90 QVI 19 13 1193 35 1 ANY IH 2v 3Hl 01 13123NND23 1SNW LAdNI 3SN3S 1 3Hl 4995 656 REV C SYSTEM INTERCONNECT 18 180001 3 3 13500L 3 3 27000L 6 3 Figure 2 2 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K CAUTION Voltages up to 480 VAC are available in certain sections of this power source This eq
83. SURE THE OUTPUT CURRENT CUR 22 The current screen displays the actual TRMS load current The resolution is 0 01 amp for the 4500L 3P and 2750L 3P The resolution is 0 1 amp per phase for all other P power systems 3 6 3 TO MEASURE THE OUTPUT POWER PWR 23 The power screen displays the actual true power delivered to the load The resolution is 1 watt for the 4500L 3P and 46 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 2750L 3P The resolution is 0 01 KW per phase for all other P power systems 3 6 4 TO MEASURE THE OUTPUT POWER FACTOR PWF 24 This screen displays the power factor from 0 to 1 000 with 0 001 resolution The PWF screen will read unity for loads less than 10 digits of apparent power on the Apparent Power APW screen When this screen is displayed after another screen it takes approximately one second to update the screen 3 6 5 TO MEASURE THE OUTPUT APPARENT POWER APWz25 This screen is accessed by its screen number 25 It displays VOLT AMPERES with a resolution of 1 VA for 4500L 3P and 2750L 3P The resolution is 0 01 KVA per phase for all other P power systems 3 6 6 TO MEASURE THE OUTPUT FREQUENCY FQM 26 This screen is accessed by its screen number 26 It displavs the measured output frequency with a resolution of 0 01 Hz 0 1 Hz or 1 Hz up to 99 99 Hz 999 9 or 5000 Hz respectively 3 6 7 TO MEASURE THE OUTPUT PHASE ANGLE PZM 27 This screen is accessed by its screen number 27
84. TP1 is ground A TP10 B TP2 Program 100 Measure the current from B and amplifier measuring the voltage at 2 respectivelv Adjust the amplifier GAIN adjustment R104 on the respective amplifier for the lowest voltage current at the respective test point Use test point TP2 making the gain adjustment R104 for amplifier B Use for amplifier C For all slave power sources adjust the amplifier GAIN adjustments for the A B and C amplifier Use TP10 for amplifier A 1 Check all of the amplifiers for the system being tested For the output from each amplifier of a given phase the AC DVM should display less that 0 25 VAC while the DVM is on the 200 VAC range 2 If any measurement from the GAIN BALANCE check is out of specification the gain of the amplifier 96 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K with the AC DVM input LO test lead connected must first be checked To check the gain of the amplifier connect the AC DVM between the Output Neutral and Output High of the corresponding output Connect an additional AC DVM HI input test point of the Current Limit Board indicated below Connect the LO input to TP1 OUTPUT TEST POINT ADJUSTMENT A TP4 R105 PHASE A AMP B TP5 R105 PHASE B AMP 6 105 3 Program the output to 135 0 or the maximum voltage allowed the corresponding Voltage Range 4 With exactiv 135 0 vo
85. U ELT VLT CUR PWR APW PWF ALM FLM RECALL A REGISTER n 5 Represents either 488 END EOS message 5 message be either ASCII Carriage Return CR Line Feed LF or just LF N Represents a numeric value 53 INSTRUCTIONAL MANUAL August 2001 2750L P 4500L P 6000L P Rev K Table 3 12 PROGRAM HEADERS HEADER EXTENSION ARGUMENT DEFINITION AMP or numeric from 0 0 to RNG value Amplitude in volts CAL A B C 0 to 255 Calibrate the output voltage CAL VLT Actual voltage Calibrated measured voltage at external sense point CALCUR A B C Actual current Calibrate measured current CALPWR A B C Actual power Calibrate measured power CLK INT EXT Clock source CRL 0 to maximum current phase Current limit in amps DLV 0 000 to 9999 Delav in seconds used as a seconds ramp parameter DRP 1 through 5 Number of Drop cvcles FRQ 45 00 to 5000 2 PHZ A B C 0 to 999 0 Phase angle in degrees PRG 0 through 15 Load register with preceding data 0 through 15 Recall register or specify link register if it is preceded by program argument followed by PRG and register number REG 0 through 15 Register load RNG A B C 0 0 to 270 or other optional range Amplitude range and limit value in volts value SNC I
86. USE Indicate output current exceeds program current Incorrect sense line connection Overload on indicated output Amplifier overtemperature CPU failed self test Remote message greater than 256 bytes No external sync input at System Interface connector Signal is not between 45 and 2 or 5 KHz Remote message sent while AC Power System is in local Incorrect syntax received from IEEE 488 External Interface Attempt to program AMP value greater than RNG value Attempt to program FRQ less than 45 2 or greater than 2 or 5 KHz Attempt to program PHZ greater than 999 9 Attempt to program CRL greater than 11 11 or 33 33 Attempt to program RNG greater than 270 0 or other optional high voltage range Attempt to program STP DLY or VAL greater than the maximum Consult factory Consult factory 1 May be any combination of A B or C 2 May be down to 17 Hz with reduced output voltage Table 3 9 FRONT PANEL DISPLAY ERROR MESSAGES 44 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 Depress the MNU key several times until the configuration menu screen is displayed as illustrated below CFG 16 ALM 17 FLM 18 CLM 19 To program the default frequency enter the key sequence 18 ENT A next enter the default frequency followed by depressing the PRG and ENT key To program the default voltage range perform step 1 through 3 Next enter the key sequence 1 7 ENT A At this point if 0 is entered
87. ader is used to recall previously loaded data from a register identified by the following register number 0 to 15 The following example recalls and outputs the parameters stored in register 0 by an example in paragraph 3 7 11 RECO The following example recalls the parameters in register 0 and outputs the parameters after the IEEE 488 GET message RECO TRG The following is an example of register linking The voltage and frequency is maintained at 115 volts and 60 Hz for 5 seconds and then the program contained in register 0 is recalled and executed The program is stored in register 1 FRQ60 AMP115 DLY5 VAL115 RECO The program is initiated by the following ASCII string 58 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 7 13 TO PROGRAM VOLTAGE RANGE RNG The RNG header is used to select a range The numeric value following the RNG header will also define the upper limit for the AMP value The RNG value will select the higher range if the value is greater than the lower range value defined by the ALM screen which is 135 for the standard voltage range If the range and voltage amplitude are to be programmed by the same data string the RNG header and argument must precede the AMP header or a syntax error will be generated The following example will select the 270 range from the 135 270 range pair with an upper amplitude limit of 210 volts RNG210 3 7 14 TO PROGRAM EXTERNAL SYNCHRONIZATIO
88. an oscilloscope is used the calibration is best performed with a programmed angle of 0 degrees To calibrate the output phase angle program 120 0 volts and 60 Hz To access the POF screen perform the following key sequences 1 Access the Phase screen PHZ 2 Depress the MNU key several times until the following screen is displayed SNC 01 CLK 02 WFV 03 RNG 04 3 Enter the key sequence 959 ENT 4 Depress the MNU key several times until the Configuration menu screen is displayed CFG 16 ALM 17 FLM 18 CLM 19 5 To display the POF screen enter the key sequence 20 ENT If an oscilloscope is used and the respective phase is programmed to 0 degrees and 200 Hz a 3 degree error is represented by 41 microseconds of the 0 volt point of the two signals The POF values may be either a positive or negative value A negative value is entered by depressing the period key two times after the numerical value is entered before the PRG key is depressed 103 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K This page left intentionally blank 104 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 5 THEORY OF OPERATION 5 1 GENERAL An explanation of the circuits within the AC Power System is given in this section Refer to Figure 5 1 for a block diagram of the AC Power System 5 2 OVERALL DESCRIPTION Input power from the rear panel is routed through the circuit breaker t
89. at reduced power with loss of Phase A Sense line fault Immediate default of programmed output with relays open Temperature Default of programmed output with relays open MEASUREMENTS 23 Voltage accuracy 10 Digits of resolution 2 0 volts from 0 to 200 volts EHV option 3 5 volts from 200 to 400 volts EHV option Voltage resolution 0 1 volt for 1 digit MODEL 2750L 3P 6000L 3P 2750L 1P EHV 4500L 3P All Other Models Current accuracy 10 Digits of resolution Current resolution 0 01 Amp 0 1 Amp For 1 digit True power accuracy 10 Digits of resolution True power resolution 1 Watt 0 01 Kw For 1 digit Apparent power resolution 1VA 0 01 KVA For 1 digit Power factor resolution 001 For 1 digit Frequency ACCURACY Hz RESOLUTION Hz 45 to 99 99 Hz 0 02 0 01 100 to 499 9 Hz 0 2 0 1 500 999 9 2 0 5 0 1 1000 10 5000 2 10 1 For frequencies below 45 Hz add 2 of measured value to measurement specification Phase angle accuracy 2 0 degrees to 2 KHz 3 degrees to 5 KHz Phase angle resolution 0 1 degree INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SUPPLEMENTAL SPECIFICATIONS LINE INPUT Voltage 187 to 252V three phase 2750L Same as above except can also operate with 1 phase input with 187 to 252 volts 6000L 208 to 252 UP Option 342 to 456 three phase Current PF 6 EFF 75 V line minimum 3P full load 31 Amps 2750L 3P 19 Amps 275
90. ays of the power source are opened during confidence testing During confidence testing the power source generates the following Amplitude A B C 115 Volts Frequency 400 Hz Current Limit Maximum and 5 of Maximum B Phase Angle 240 degrees C Phase Angle 120 degrees The power source compiles a message after the confidence test and the receipt of a STA OP code The power source responds with the appropriate message as shown in Figure 3 7 The reference designators shown in Figure 3 6 are for 72 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K the subassemblies most likely to be at fault The IST internal self test OP code produces the same response described for CNF 3 8 3 7 INX The INX initialize OP code is a request for data from the power source A request for the time required to measure the voltage of all phases consists of the following strings FNC ACS VOLT CHnn CR lt LF gt INX VOLT CR lt LF gt The power source then responds with lt SP gt 5 lt CR gt lt LF gt The power source response indicates that 5 seconds will be required to perform the measurement The measurement time values are stored in read only memory in the power source Note that the INX OP code must be preceded by an FNC OP code string containing the noun modifier for which INX will request data 73 INSTRUCTIONAL MANUAL August 2001 27501 45001 60001 Figure 3 7 CONFIDENCE TEST F
91. bserve power source capabilities See Section 1 page 1 4112 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 2 The crest factor of the load current exceeds 2 5 With this condition the distortion will be much higher at frequencies above 100 Hz SOLUTION Reduce the load or program the current limit to a higher value 6 8 NO OUTPUT If the AC Power System has no output at the rear panel terminal block TB1 the following items may be at fault 1 If the External Sense lines are not connected correctly there will be no output The error message AMP FAULT will also be generated SOLUTION Correctly connect the sense lines Refer to Paragraph 2 5 page 20 2 When the output is overloaded an error message will be generated and the output relays will open The error message would be AMP FAULT SOLUTION Remove the overload Observe the output power capabilities Refer to Section 1 page 1 3 There is no input to the power amplifiers from the oscillator Check the oscillator signals at the system interface connector J7 24 Oscillator Phase A J7 6 Oscillator Phase J7 23 Oscillator Phase C 47 7 Oscillator common return Program 135 0 volts on the 135 volt range The three signals should be 5 0 0 10 VAC SOLUTION If there is no signal at the Systems Interface connector replace the oscillator Refer to paragraph 6 9 page 113 SOLUTION If the signal at the System Interface connector is greater than 5 0 VAC i
92. c low on this pin indi cates the high voltage range If the power system is used without an oscillator this pin is a logic input 47 29 Make connection 47 30 FLT Make no connection 47 31 STB HI Function Sync High signal This is the collector lead of an optically isolated NON transistor The internal power controller turns this transistor on to indicate a change of programmed values This output will sink more than 2 milliamps to a TTL low logic output level lt 4 volts The output is an open collector optocoupler output A pullup resistor to a VDC must be connected to J7 pin 31 J7 pin 14 is the common output Refer to Figure 3 3 J7 32 EX SYNC HI External Sync High signal This is an input that can be used to synchronize the outputs of the AC Power System This input requires a logic high level of at least 4 5 VDC at 5 ma The input should have a duty cycle 50 30 J7 15 is the common input The External Sync input is optically isolated It must also be enabled from the SNC screen J7 36 REMOTE SHUTDOWN This is a logic input that can be used to remove the programmed output voltage A logic low on this pin will cause the output voltages to be programmed to 0 0 volts and the output relays to open A logic high will cause the programmed output voltage to be restored at the output terminals A contact closure between this pin and J7 27 D COM will simulate a logic low state 3 4 6 AUXILIARY OUTPUT AX Option TB2 i
93. d 440 Hz Select an AC input line and hookup wire to the AC Power System that will deliver 40 amps per phase and still supply a minimum of 187 volts line to line Refer to Figure 2 2 for circuit breaker requirements of all multichassis power system 6000L power system must have a minimum of 208V for a full rated load on the output 2 3 MECHANICAL INSTALLATION The power system has been designed for rack mounting in a standard 19 inch rack The unit should be supported from the sides with optional rack slides See Accessory Equipment Rack Slides in paragraph 1 3 The cooling fan at the rear of the unit must be free of any obstructions which would interfere with the flow of air A 2 5 inch clearance should be maintained between the rear of the unit and the rear panel of the mounting cabinet Also the air intake holes on the sides of the power source must not be obstructed See Figure 1 1 2 4 INPUT WIRING The AC Power System must be operated from a three wire three phase service with a fourth wire for common The common wire is connected to the chassis of the AC Power System The mains source must have a current rating greater than or equal to the AC Power System circuit breaker 40 amps Refer to Figure 2 1 for the input power connections Refer to Figure 2 2 for all multichassis power systems The 2750L may also be operated from a 1 phase input The 1 phase line input must be connected between the B and C terminals of TB3 on the rear pane
94. d power to be same as power argument The argument is in KW for power svstems of more than 2000 VA per phase 20 POF 0 359 9 Calibrates the programmed output phase Table 3 7 CALIBRATION SCREEN 34 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K NO SCREEN EXTENSIONS ARGUMENT ACTION TAKEN NAME 16 CFG A LSN 0 30 Sets the IEEE 488 GPIB Listen Address P Defines the features enabled for Power Source eB compatibility Defines the phase C initial value for power Ten system configuration 17 ALM A RNG 0 Code that defines the default voltage range B LLM 5435 Defines the upper limit of the lower voltage range C HLM 5270 Defines the upper limit of the higher voltage range 18 FLM A FRQ 60 Defines the default frequency B LLM 45 Defines the low frequency limit C HLM 5000 Defines the high frequency limit 19 CLM A RNG Max Current Defines the maximum current limit value B PRS 0 Defines the decimal point location for measured power Defines the decimal point location for measured 5 current 29 INI A AMP 0 5 Defines default voltage C CRL 0 Max Current Defines the default Current Limit NOT USER PROGRAMMABLE THE VALUES SHOWN ARE FOR A STANDARD 3 PHASE SVSTEM Table 3 8 CONFIGURATION SCREENS 3 5 3 TO PROGRAM OUTPUT VOLTAGE AMPLITUDE AMP 5 NOTE The external sense lines must be connected to J6 on the rear panel o
95. d program the start frequency of 360 Hz 6 ENT 360 PRG 3 Select the RMPA screen and program the independent ramp parameters of STP 2 and 2 and VAL 440 9 ENT 02 PRG B 02 PRG 440 PRG 4 Select the RMPB screen and program the dependent ramp parameters of STP 5 10 ENT B 05 PRG 5 Start the program by pressing the ENT key The final value of the dependent parameter AMP will be determined by the number of steps of the independent parameter and the STP value 5V specified in RMP B FINAL VALUE INITIAL VALUE NO STEPS NO STEPS E DEP PAR FINAL VALUE INITIAL VALUE STEP SIZE In this example NO STEPS 440 360 2 400 FINAL AMP VALUE 10 5 X 400 210 Volts If the final value exceeds the RNG value an error message will be generated NOTE Any ramp may be terminated at any time by depressing the ENT key 3 5 9 TO PROGRAM THE OUTPUT WAVEFORM WVF 3 SQW Option 39 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K The waveform selection is an option for the AC Power system If the screen cannot be selected the option is not enabled The WVF screen displays the type of waveform selected sine wave SNW or square wave SQW for each of the three outputs To program a square wave depress the SQW or any odd number key followed by any combination of the A B or C key the PRG key and ENT key If no phase key is depressed the new waveform will be p
96. e NOTE The DLY STP or VAL parameters must be specified A B or C key depressed before the number value for the parameter is entered When ramping frequency an error message will result with an attempt to step the frequency with greater resolution than that possible by the initial or final values The step program may also be used to generate a dropout to zero volts on phase A at any point on the waveform This type of program is selected by setting the AMP value to zero before setting the DLY and VAL parameters The point on the waveform at which the dropout occurs is specified by setting the A value in the PHZ screen The following key sequence will program 130V for 2 5 seconds and then return to a final value of 115V 1 Select the AMP screen and enable 130 volts to be programmed 5 ENT 130 PRG 9 2 Select the RMP screen program a DLY of 2 5 a final VAL of 115 volts and run the program 9 ENT A 2 5 115 PRG ENT The next example will illustrate a ramp program The following sequence will ramp the frequency from 60 hertz to 400 hertz in 1 hertz steps with a delay DLY for each step of 003 seconds The total time for this ramp will be VAL 5 or 10 2 seconds 1 Select the FRQ screen and set the starting frequency of 60 Hz 6 ENT 60 PRG 2 Select the RMP screen set a DLY of 003 set the STP of 1 set the final VAL of 400 and run the program 9 ENT 0 003 PRG B 01 PRG 400 PRG ENT If the E
97. e 3S VHd L l 74510 451 100 1 p dW3l83 19210 1 1 210 1 8 H H 31DW38 NI SDLVOIONI JONVA HOIH fi f fil fi 1 U 8942 QUO hd pi 542435 v3H 1913 v8riH4 0622 0006 062 2 1 X 26 01 G 30118 293 INNOW LON gt 30115 2 40 8 02 1 812 530130 IWHANAI 6892 699701 NU LINN3A 5 0220 3 02 e 0 0008 lt e 0 887 3331 8D1293NND2 0 000 123 2 aad o E SD193NNDO2 H xod n n n 8 6 1181010 JIMDA 204090 HOLIMS 10 NOLLYSNOT INO 3284108 N3 Dd 0001 1955 WE 3OVJ83INI W31SAS INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Full power is available at the maximum output voltage on either of two voltage ranges The standard voltage ranges are 135 and 270 Three optional voltage range pairs are available 67 5 135 156 312 and 200 400 All P Power systems except for the 6000L will deliver full power from 45 to 2000 Hz All 60001 power systems will deliver full power from 45 to 440 Hz The 2750L 3P 4500L 3P and 6000L 3P will deliver full power from 45 to 5000 Hz The power sources are illustrated in Figure 1 1 The 200 400 volt range EHV Option i
98. e 2750L Apply the resistive load to the output Adjust R4 on the Range Relay assembly for the correct voltage at TP10 for the load current 1 volt 10 Amps Remove the load before loading the next output to be calibrated Repeat steps 1 through 3 for A B and C outputs of all power sources Refer to the following table for the adjustments and test points CURRENT TRANSFORMER ADJUSTMENTS 97 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K OUTPUT ADJUSTMENT TEST POINTS TPI is Gnd Range Relay Assy Current Limit Assy A R4 TP10 B R10 TP2 R16 TP3 5 Reinstall jumper W2 on all Current Limit Assemblies if it has been removed Reconnect all outputs as shown in Figures 2 2 and 2 3 4 4 5 LOAD BALANCE ADJUSTMENT CAUTION The Load Balance Adjustment should not be made unless an amplifier assemblv has been repaired Each amplifier has been adjusted at the factorv for an output regulation with a 1500 watt load 60001 amplifiers are adjusted for 0 37 other amplifiers are adjusted for 1 5 The following adjustment procedure is for all power systems except the 2750L 3P 4500L 3P and 6000L 3P The power system must be connected as shown in Figure 2 2 A load resistor see LOAD RES in Table 4 1 must be connected to the phase A B or C output of the power system For the following adjustments two external AC DVMs must be used The DVMs must be connected to test points on the Current Limit Board A9 The inp
99. e Amplitude Limit ALM screen and to select an upper voltage limit less than that specified by the ALM screen LLM or HLM values If the range pair 135 270 has been selected in the ALM screen with LLM 135 and HLM 270 the 135 range of the power source will be programmed by the RNG screen for any value of 135 or less The value programmed will then be the maximum value allowed to be programmed in the Amplitude AMP screen To select the 270 range and set a program amplitude limit of 250 volts perform the key sequence below 4 ENT 250 PRG ENT 3 5 8 TO PROGRAM RAMP OR STEP FUNCTIONS RMP 9 The Ramp RMP function allows any programmable parameter AMP FRQ PHZ CAL or CRL to be Stepped STP with a Delay DLY for each step to a final value VAL There are three types of programs that may be specified by the RMP screen a ramp and two types of step programs The step function will program the output parameter value specified by a previous screen for the time specified for the 37 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K DLY value in seconds The parameter will then return to a final value specified by the VAL value The ramp function will step the output parameter value specified by a previous screen with the STP value the DLY time per step and the final VAL setup in the RMP screen The ramp will increment if the VAL value is larger than the parameter value It will decrement if it is less than the parameter valu
100. e IEEE 488 GPIB connector for the master 4500L or the 2750L only 3 4 5 SYSTEM INTERFACE J7 is the System Interface connector Table 3 3 identifies the pins of the System Interface connector J7 Description Analog Common MR B Phase B amplifier input signal Analog Common CS B Phase B current sum CT Common Current Transformer Common OS B Oscillator Phase B output Analog Common CL B Phase DC current limit RPV Not used 10 Overtemperature indication 11 eur Output relay 12 FLT C Phase C current limit fault 13 FLT A Phase current limit fault 14 F STB LO Function Sync output LO 15 EX SYNC LO External Sync input LO OONDOARWD 16 No connection 17 No connection 18 No connection 19 MR C Phase C amplifier input signal 20 MR A Phase A amplifier input signal 21 CS C Phase C current sum 22 CS A Phase A current sum 23 OS C Oscillator Phase C output 24 OS A Oscillator Phase A output 25 CL C Phase DC current limit 26 CLA Phase A DC current limit 27 D COM Digital Common 28 High Voltage range 30 FLT B Phase B current limit fault 31 F STB HI Function Sync output HI 32 EX SYNC HI External Sync input 36 REMOTE SHUTDOWN Table 3 3 SYSTEM INTERFACE CONNECTOR J7 28 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 J7 1 J7 2 J7 3 J7 4 J7 5 J7 6 J7 7 J7 8 J7 9 J7 10 J7 11 J7 12 J7 13 J7 14 J7 15 J7 16 J7
101. e indicated by a TRMS ammeter standard 10 12 amps CAL CUR A 10 12 3 7 10 TO PROGRAM RAMP OR STEP OPERATIONS The DLY header is used with a parameter that has a numeric argument ex AMP FRQ PHZ CRL CAL in a single step program The numeric argument is in seconds with four decade resolution from 0 001 to 9999 seconds The STP header with VAL may be used with DLY to completely specify a ramp program The following string will first step the voltage to 125 volts for 2 55 seconds and return to 115 volts AMP 125 DLY 2 55 VAL 115 The following string will ramp the voltage from 10 volts to 115 volts with 1 5 volt 5 sec steps 10 5 STP 1 5 VAL 115 When an AMP header with an argument of 0 is used the waveform will stop and drop to zero volts at the point specified by the PHZ A value The following ASCII string will stop the waveform at 0 degrees for 01 seconds and return to 115 volts PHZ A 0 AMP 0 DLY 01 VAL 115 The STP header is used to identify a numeric value as the increment or decrement value for FRQ CRL AMP PHZ or CAL ramp The following example will ramp all outputs from 130 volts in 1 5 volt 5 sec steps to 10 volts AMP130 DLY 5 STP1 5 VAL10 The header VAL is used to identify the following numeric argument as the final Value of a ramp or step If the VAL argument is larger than the initial value for the parameter to be ramped the ramp will increment with step size defined by STP and DLY With the VAL
102. eader is included with the TLK string The following string will cause the Service Request to be generated when the power svstem has finished the power factor measurement PWF SRQ2 61 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 7 26 TO TALK THE MEASURED OUTPUT VOLTAGE TLK VLT VLT may be used as an argument to the header TLK with an A B or C extension When used as an argument it will set up the AC Power System to measure the output voltage with 0 1 volt resolution When VLT is used as a header in a string with no argument it will cause the front panel to display the measured output voltage 3 7 27 TO TALK THE MEASURED OUTPUT CURRENT TLK CUR CUR may be used as an argument to the header TLK with an A B or C extension When used as an argument it will set up the AC Power System to measure the output current in amps with 0 01 amp resolution for the 4500L 3P and 2750L 3P The resolution is 0 1 amps for all other models When CUR is used as a header in a string with no argument it will cause the front panel to display the output current Table 3 13 TLK ARGUMENTS ARGUMENT EXTENSION DATA DEFINITION REPORTED A Default voltage range code 5 Low Voltage Range High Voltage Range 0 to 270 0 Programmed voltage Amplitude value in volts APW 0 to 2000 Output VA 4500L 3P and 2750L 3P or Output KVA All other models 0 00 to 20 00 IEEE 488 Listen Address Configuration Code Phase C initial Va
103. eader may also be used to trigger register operations by including the TRG header with the string used to recall a register The following example will delay execution of the program in register 1 until an IEEE 488 Device Trigger is received TRG 59 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K The Trigger mode may also be enabled in the local mode by programming setup parameters without depressing the ENT key The setup values will then be programmed in the remote mode when the Device Trigger is received 3 7 17 TO PROGRAM THE OUTPUT WAVEFORM WVF Optional The header WVF with the optional A B or C extension is used to identify the following argument as the Sine Wave SNW or Square Wave SQW function of the Waveform The following example will program all outputs to the square wave function WVF SQW The following example will program only output B to the square wave function WVFB SQW 3 7 18 TO OPEN OPN AND CLOSE CLS THE OUTPUT RELAY The OPN and CLS headers open and close the output relays in the power source There is no argument associated with these headers When the OPN or CLS headers is received the output voltage will be programmed to zero volts for 50 milliseconds before the output relays open or close 3 7 19 TO PROGRAM DROP CYCLE DRP The DRP header is used to identify the Drop Command The argument is a numeric data field from 1 to 5 The following string will drop the output volta
104. eet ae 137 10 2 INITIAL 5 137 10 3 TEST PERFORMED ii 137 10 4 KEYPAD ENTRY Refer to Figure 1 for Keyboard Chart 137 10 5 GPIB 139 10 6 TEST SPECIFICATION 140 LIMITED WARRANTY 147 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K TABLE OF TABLES Table 1 1 OUTPUT VA PER PHASE 1 Table 1 2 SPECIFICATIONS 45001 2750L P 6000L P 4 Table 2 1 MAXIMUM LENGTH OF OUTPUT WIRES 20 Table 3 1 POWER OUTPUT TERMINAL BLOCK TB1 26 Table 3 2 EXTERNAL SENSE CONNECTOR J6 26 Table 3 3 SYSTEM INTERFACE CONNECTOR J7 28 Table 3 4 KEYPAD KEY DESCRIPTION
105. elaro 92 46 3800 1006 ind ov IV 181 H1ON31 79103 30 38 15 191 OL S3NIA Tv wu s 50 3813 QIONVALS DAY 181 01 ALOAIA 36 ISAW TVNAJLXJ GITIVLSNI SI 1911125 14 V NIHA 1NIOd 3SN3S WN33LX3 JHL 550597 399LIDA 3Hl SI 3OVL HA 104100 IHL 141 ND QVI 3Hl 19 1133453 U IH 1041010 2v 3Hl 13123 2 LSAW 1ndNI 3SN3S IVNAJIXI 3Hl 4995 653 REV C SYSTEM INTERCONNECT 5172 FOR ALL 1 SVSTEMS Figure 2 2 Rev K 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 Li Ra m X 5 l G m z 5 N o BT 2
106. ency 3 7 32 TO TALK THE MEASURED OUTPUT PHASE ANGLE TLK PZM PZM may be used as an argument with an extension A B or C for the header TLK When used as an argument PZM will set up the AC Power System to measure the phase angle of phase B and C relative to phase A The measurement is made at the External Sense terminals Phase A is the reference phase and will always be reported as 000 0 degrees unless the AC Power System is operating in the external sync mode When PZM is used as a header it will cause the front panel to display the phase measurement screen 3 7 33 MESSAGE SEPARATORS A complete message consists of a header and an argument Since more than one message can be sent in a setup string message separators included in the string between the message will make it more readable to the human operator Three message separators are recognized the comma semicolon and a space Since these separators are ignored they may be dispersed throughout a setup string The following are two examples of ASCII strings with separators PHZA90 FRQ60 AMP115 CRL 90 FRQ50 AMP 120 3 7 34 SERVICE REQUEST After power up the GPIB Service Request SRQ will be generated after any error example syntax output fault etc This SRQ output can be inhibited by the SRQ header followed by the single digit 0 The SRQ can be reenabled by the SRQ header followed by 1 Sending SRQ2 causes an SRQ to be generated after the execution of a setup string or
107. er screen or calibration screen Also used to recall the program register identified by the preceding numeric value Used to clear the numerical inputs for the display screen Used to display programmed output parameter values Used repeatedly it will cause the display screens of increasing numeric numbers to be displayed Used to program setup values in the Program Register Used repeatedly it will cause the display screens of decreasing numeric numbers to be displayed Used to transfer the contents of the program register to the actual output parameters Table 3 4 KEYPAD KEY DESCRIPTION 32 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 5 2 DISPLAY SCREENS A display of data on the front panel LCD display is called a screen There are five types of screens menu output parameter measurement calibration and configuration screens Menu screens display the screen abbreviation with its equivalent number The numeric value for each item in a menu screen is the code that may be used to select the screen Tables 3 5 through 3 8 show the numeric values for all screens Without the aid of the tables the MNU key may be used The menu screens will display only the programmable features that are enabled and their associated screen number Table 3 5 shows all of the available Output Parameter screens While viewing any of the screens the associated output parameter may be changed from the keyboard Table 3 6 shows al
108. f the AC Power System If they not properly connected an FAULT message will result when the output relay is closed Refer to Figure 2 3 The output voltage Amplitude may be programmed independently or simultaneously for each phase Select the Amplitude AMP screen by entering keystrokes 5 ENT 35 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K The display now shows the AMP parameter screen AMP MONA 0 0 B 00C 0 0 NOTE The B and C values are optional and they are only displayed with either a two or three phase configuration Program all outputs to 115 5 volts with the keystrokes 115 5 PRG ENT Program phase A to 130 0 phase B to 110 0 and phase C to 90 0 volts simultaneously 130 A PRG 110 B PRG 90 C PRG ENT Slowly increase the output amplitude of phase B only BPRG Hold until desired value is obtained The output frequency can be programmed between 17 and 45 Hz For operation between these frequencies the output voltage Amplitude AMP is limited to values less than that described by the following formula AMP Voltage Range FRQ 45 3 5 4 TO PROGRAM FREQUENCY 6 Select the Frequency FRQ screen by entering the keystrokes 6 ENT Program the output to 60 23 hertz 60 23 PRG ENT To incrementally increase the output frequency to a desired value 29 until desired frequencv is reached The out frequency may be programmed down to 17 Hz if the programmed voltage
109. from the GPIB on the front panel keyboard It sends digital programming information to set 108 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K the output parameters of the power source Data from measurement circuits are accepted and reported to the display and GPIB Measurement calibration coefficients are stored in a memory backed up by a battery The battery has a 10 year life expectancy Measurement circuits on the CPU GPIB board monitor voltage current power frequency and phase angle Voltage from the rear panel sense connector is scaled converted to a DC voltage by a true rms converter and sent to the microprocessor by the analog to digital converter Current sensed by internal current transformers is scaled converted to a DC voltage by a true rms converter and sent to the microprocessor by the analog to digital converter The scaled voltage and current waveforms are applied to the inputs of a multiplier The multiplier output is filtered to a DC level and digitized by the analog to digital converter Frequency is computed from the measured time intervals between zero crossings of the Phase A waveform Phase is computed from the differences of measured zero crossings between the Phase A signal and the Phase B or Phase C signal A digital to analog converter on the CPU GPIB board sets the DC voltages that are used for the programmable current limit function 5 11 PHASE A REF BOARD The Phase A Ref Board A
110. g the extra step of entering the register number followed by depressing the PRG key This extra step must be entered before the last ENT keystroke The following program will program 135 volts and 60 hertz on all outputs for 10 seconds before reducing the output to 115 volts and store the test in register 0 1 Select the FRQ screen and program 60 hertz 6 ENT 60 PRG 2 Select the AMP screen and program 135 volts 5 ENT 135 PRG 3 Select the RMP screen and program DLY 10 and VAL 115 9 ENT A 10 PRG C 115 PRG 4 Store the program in register 0 0 recall perform the register operation simplv enter the register number followed depressing the REC and ENT kevs 3 5 13 REGISTER LINKING Any number of registers may be linked together by using the REC key prior to loading the register operation The following program will ramp the voltage from 115 volts and 60 hertz to 135 volts with 1 volts per 10 millisecond steps remain at 135 volts for 10 seconds return to 115 volts at the same rate but at 62 Hz Store the program in Registers 1 and 2 41 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 1 Select the FRQ screen and program 60 Hz 6 ENT 60 PRG 2 Select the AMP screen and program 115 volts 5 ENT 115 PRG 3 Select the RMP screen and program DLY 0 01 STP 0 1 and VAL 135 9 ENT A 0 01 PRG B 0 1 PRG C 135 PRG 4 Link this program to Register 2 2 REC 5 Store this program in Register
111. ge for phase for five complete cycles and start at 0 degree of the wave form Note that all drop angles are relative to Phase A PHZ A 120 DRP B 3 7 20 TO PROGRAM THE DEFAULT FREQUENCY FLM A The default frequency is the output frequency after power up or after an IEEE 488 Device Clear The following example will program the default frequency to 400 Hz FLM A 400 3 7 21 TO PROGRAM THE DEFAULT OUTPUT VOLTAGE INI A The default voltage is the output voltage after power up IEEE 488 Device Clear or an Amplitude fault The following example will program the default voltage to 5 volts 5 If the default voltage is programmed to a value less than 5 volts the time will increase addition there may be an amplitude fault when the voltage is programmed from the default voltage to a value less than 50 of full scale 60 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 7 22 TO PROGRAM THE DEFAULT CURRENT LIMIT INI C The default current limit is the value after power up or IEEE 488 Device Clear The following example will program the default current limit to 10 amps INI C 10 3 7 23 TO PROGRAM THE DEFAULT VOLTAGE RANGE ALM A The default voltage range is the voltage range after power up or IEEE 488 Device Clear A value of 0 designates the low range A value of 8 designates the high range The following example will program the default voltage range to the high range ALMA 8
112. he following string 55 calibrate phase 135 volts start the routing with message with the starting at 20 and with each step lasting 2 seconds use the following string 135 0 CALA20 DLY2 STP1 VAL255 TRG In this example the output will program to 135 0 and start to change the output by stepping the CAL value after a GET message the ramp will terminate after a second GET message The following example will calibrate the phase A output by starting the ramp with the existing CAL coefficient and reducing the output with steps lasting one second AMP135 0 CALA DLY1 STP1 VALO 56 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Again the ramp must be terminated with the bus GET message when the external AC calibration DVM indicates the correct voltage The CAL header is used with the headers VLT CUR and PWR to calibrate the respective measurement function An A B or C extension follows the headers to designate a specific measurement channel If the extension is omitted the calibration coefficients for all measurement channels will be the same and will depend on only the value for phase A The arguments is a numeric value that represents the expected measured value It should be equal to an external precision TRMS voltmeter ammeter or power meter The following ASCII string will cause the current measurement for phase A to measure the valu
113. illator Controller installed chassis systems with the MODE option installed 21 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K d All chassis in systems with Single Phase output Both chassis 90001 2 3 12000L 2 3 system For multiple chassis power systems with a multi phase output 9000L 2 2 13500L 3 3 270001 6 3 and 40500L 9 3 the DIP switches should be set to the following positions DIP SWITGH D PHASE MASTER AND SLAVE 1 1 1 1 PHASE B 1 1 1 0 PHASE 1 1 0 1 22 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 Rev K FUNCTION TEST SETUP Figure 2 3 1 8 6 100021 E eres ONIAMNWO LNISSNI 40 CV31SNI SINIT 1 9 1000 2 3SN3S 03123 2 38 LSAW 29 3LON D 9 1000 2 1 700661 1 7 31491 033 INTIVA 6 7006 1 35 1901 01 a343 1 2 10006 2 10006 1 1006 1005 6 10 2 INdiNO 29 1 105 2 W31SAS N3 Dd jsvHd Nad TINA W31SAS NaMOd e O TMIN O 09075 ge e 22 01 WAG A D ov v N3T10HINDO SDLVTIIOSA e HIIA 008p 40 3123NNUO 3SN3S IH 8 T 6 2 5 0 9 23 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K SECTION 3 OPERATION 3 1 GENERAL The AC Power System may be program
114. in the phase B or C output phase angle relative to phase A 4 4 7 OUTPUT PHASE ANGLE CALIBRATION 103 4 2 TEST EQUIPMENT The following equipment or their equivalents are required to completely test the AC Power System TEST EQUIPMENT FOR PERIODIC CALIBRATION 1 Digital Voltmeter Fluke Model 8840A modified per 005 equivalent 2 100 Amp Current Transformer Pearson Model 3468 3 Resistive Loads See LOAD RES value from Table 4 1 ADDITIONAL TEST EQUIPMENT 1 Two additional Digital Voltmeters 2 Frequency Counter Philips PM 6671 3 Phase Angle Meter Krohn Hite 6500A 83 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 Rev K INTERNAL ADJUSTMENTS AND JUMPER LOCATIONS Internal Adjustments and Jumper Locations Figure 4 1 Sh EX X etil 4 0 U U bx 0 N3Nh8 12 9
115. itch at the right side of the meter An OVERTEMP lamp illuminates when the temperature of the power amplifier heatsinks has surpassed a maximum set level When the fault is detected the outputs are disabled and must be reprogrammed after the overtemperature condition has been eliminated An OVERLOAD lamp illuminates when the output current exceeds the programmed current limit value The outputs will default to 0 0 volts and the output relays will open shortly after the condition occurs 24 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Figure 3 1 FRONT PANEL CONTROLS AND INDICATORS L aw ge kell O o 52 U U U U o8 He CO lt vO A gt Up DISPLAY VIEW ANGI LCD DIGITAL KEYPAD REMOTE CIRCUIT BREAKER 25 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K A HIGH RANGE lamp illuminates when the AC Power System is programmed to the high voltage range An LCD digital display shows the numeric value of all programmed output parameters also shows all error messages and measured val
116. l These terminals are identified as terminals 2 and 3 of TB3 in Figure 2 1 13 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August 2001 Rev K 6000L 27501 and 4500L 3P REAR PANEL CONNECTIONS Figure 2 1 S S8 6 YIN 01 45 45 U 3SN3S 4 15 45 10 4 15 45 15 45 15 45 V NOILONN 4 N or SD LAdNI JIMDd 887 3351 ND 5155 2 VALNJN INALNU INALNU 4 109110 st A NODILONN 4 N 1 3SVHd NOILONN4 0001 2966 WE 2IV4AJLNI WILSAS Q 15 45 IVNEJIXA 1044100 arse e i MITI ml ERC es JR c SSS 2s 25 2535 C OC OC C DC 2 JC 262320 2 e 2 ra 1 e C C 2 y e li OUO COCCO T CO e elelelelee K Tr dl 0 0 08 1 901 SOLOANNOOD AL IV
117. l of the Measurement screens When accessing some Measurement screens up to three seconds may be required to display the screen Table 3 7 shows all of the screens for calibrating the output and measurement functions A special code is required to access these screens Refer to Section 4 Calibration Table 3 8 shows all of the Configuration screens The only value that is user programmable is the IEEE 488 GPIB Listen Address The following are for changing the output NO SCREEN EXTENSIONS ARGUMENT ACTION TAKEN NAME 1 SNC INT EXT Selects phase A to be synchronized to an external input 2 CLK INT EXT Selects the external clock mode of operation 3 WVF SNW SQW Sets the output waveform 4 RNG Range limit Selects the output voltage range Range limit values of 135 and 270 are standard 5 AMP O RNG limit Sets the output voltage amplitude 6 FRQ 45 5000 Sets the output frequencv 7 PHZ 0 999 9 Sets the output phase angle 8 CRL to Max Current Sets the output current limit 9 RMP A L 0 001 9999 Sets the Delay between ramp steps in seconds Four decade resolution from 0 001 to 9999 seconds STP Sets the step size of ramp parameter VAL Sets the final value of the parameter ramped RMP B STP Same as RMPA VAL Same as RMPA 28 DRP 0105 Drop periods of sine wave 30 51 or PHS3 Selects output to be 1 phase or 3 phase Optional screen
118. lowed by the ENT key Also used to select the sine wave waveform Inputs the value 1 for all output parameters or to select screen 1 when followed by the ENT key Also used to select the square wave waveform Inputs the value 2 for all output parameters or to select screen 2 when followed by the ENT key Also used to select the Internal Synchronize or Internal Clock modes of operation Inputs the value 3 for all output parameters or to select screen 3 when followed by the ENT key Also used to select the External Synchronize or External Clock modes of operation Inputs the indicated numeric value for all output parameters or to select the corresponding screen when followed by the ENT key Selects the Menu screens that show all display screens and the corresponding numeric value The decimal point function of this key is enabled after any numeric key is depressed Used to direct any parameter change to phase A Also used to update any quantity in the display identified as A Used to direct any parameter change to phase B Also used to update any quantity in the display identified as B Used to direct any parameter change to phase C Also used to update any quantity in the display identified as C Used to increment the value in any output parameter screen or calibration screen Also used to load the program register into any register identified by the preceding numeric value Used to decrement the value in any output paramet
119. lts or the maximum voltage allowed range the Current Limit test point must be 5 000 1mV 5 Adjust R105 so that the voltage at the test point is 5 000 volts or Vout 5 Vmax if Vmax is 135 volts 6 Repeat step 1 and adjust R105 of the amplifier for the respective output so that the output balance voltage is at a minimum 7 Remove the input power and reinstall jumper W2 on the Current Limit Board in all power sources 8 Reconnect the outputs as shown in Figures 2 2 and 2 3 4 4 4 CURRENT TRANSFORMER ADJUSTMENT The following adjustments must be made with jumper W2 on the Current Limit Assembly removed If the output of any power source is connected to the output of any other power source 90001 2 1 90001 2 3 13500L 3 1 270001 6 3 27000L 6 1 remove the connection The External Sense input to the Master power source must remain connected For the following adjustments a load resistor must be connected to each output of every power source in the system The load resistor must be capable of loading an amplifier to approximately 9 amps 4 amps for the 2750L Only one amplifier at a time needs to be loaded 1 Monitor the phase A output current with the Current Transformer and AC DVM Measure the phase A voltage between TP10 and TP1 on the Current Limit Assembly Turn on the AC input to the AC Power System Program 60 Hz and an output voltage that generates an output circuit of approximately 9 amps 4 amps for th
120. lue Defines the maximum current per phase CURRENT TABLE Defines the power decimal point 0 4500L 3P and 2 27501 3 2 all others Defines the current decimal point 2 45001 and 2750L 3P 1 all others 2 or 1 0 00 to 20 0 Output current 4500L 3P and 2750L 3P or All other models 0 0 to 100 0 0000 to 9999 Total accumulated hours H 00 to 59 Accumulated minutes M 00 to 59 Accumulated seconds S Default frequency Low frequency limit High frequency limit 62 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K ARGUMENT EXTENSION DATA DEFINITION REPORTED O to CRL Default current limit WVF INT or EXT Programmed waveform PHZ 0 0 to 359 9 Programmed output phase angle PWR 0 to 2000 Output watts 4500L 3P and 2750L 3P or Output KW all other models 0 00 to 27 00 PZM 0 to 359 9 Measured phase B and C output phase angle relative to A Ais always 0 0 9 Standard values shown Values will be different for other ranges output power and options NOTE Ifthe A Extension is not sent with the argument all phases will be reported VOLTAGE RANGE PAIR MODEL 135 270 156 312 67 5 135 200 400 27501 7 40 6 40 14 82 5 00 2750L 1P 22 22 19 24 44 44 15 00 4500L 3P 12 34 10 68 24 70 8 34 4500L 1P 37 04 32 06 74 08 25 00 9000L 2 3P 24 68 21 36 49 38 16 66 9000L 2 2P 37 04 32 06 74 08 25 0 9000L 2 1P 74 08 64 12 148 2 50
121. mal undervoltage There will be a pause of 5 seconds between tests If the voltage range is below 180 volts the Abnormal overvoltage test will not take place Abnormal overfrequency test Figure 12 MIL704D ABNormal FREQuency OVER This test will step up the frequency from 400 Hz to 480 Hz The frequency will step down to 400 Hz in the following sequence 480 Hz for 5 seconds 425 Hz for 5 seconds Abnormal underfrequency test Figure 13 MIL704D ABNormal FREQuency UNDer This test will step down the frequency from 400 Hz to 0 Hz The frequency will step up to 400 Hz in the following sequence 0 Hz for 5 seconds 375 Hz for 5 seconds Abnormal frequency test MIL704D ABNormal FREQuency This test will combine the Abnormal overfrequency and the Abnormal underfrequency There is a pause for 5 seconds between tests EMERGENCY Emergency voltage test Figure 14 MIL704D A B C EMERgency VOLTage This test will step down the voltage to 104 volts for 5 seconds Also it will step up the voltage to 122 volts for another 5 seconds Emergency frequency test Figure 15 MIL704D EMERgency FREQuency This test will step down the frequency to 360 Hz for 5 seconds then will step up the frequency to 440 Hz for 5 seconds Emergency test 125 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K MIL7O4DJAI BI C EMERgency This test will combine the voltage emergency test and the frequency emergency test A
122. may be any of the following for non CNF messages SYNTAX ERROR VOLT RANGE ERROR FREQ RANGE ERROR CURL RANGE ERROR PANG RANGE ERROR The response of the power source under a short circuit condition is as follows FO7ACS01 lt SP gt DEV SP OUTPUT CH01 amp 02 amp 03 VOLT FAULT CR lt LF gt A setup string can always be followed by another string with the STA OP code In the event of a syntax range or system error an error message will be returned to the bus controller when the power source is addressed to talk The value of the last parameter in a setup string is the one displayed on the front panel of the power source 3 8 7 DISCRETE FAULT INTERRUPT A discrete fault condition is one that would pose a hazard to equipment or personnel A Discrete Fault Interrupt DFI is supplied with the MT power source option The DFI relay contacts are connected to the BNC connector J3 on the power source rear panel Under normal operating conditions the DFI relay contacts are open when a fault is detected the contacts close The user may connect any type of indicator or alarm circuit to the DFI connector provided the applied signal is limited to 0 1 amps and 26 volts The conditions which will cause the discrete fault interrupt are listed in Table 3 18 Table 3 18 DISCRETE FAULT INTERRUPT CONDITIONS FAULT CONDITION OVERLOAD OUTPUT The full rated power capability is exceed on any phase where programmed output voltage is not maintained
123. med from the front panel or through the IEEE 488 external interface The rear panel of the AC Power System holds the power input and output terminals external sense connector system interface connector IEEE 488 interface connector and the chassis ground stud 3 2 FRONT PANEL CONTROLS All front panel controls are shown in Figure 3 1 A voltmeter selector switch is located at the right side of the front panel voltmeter The three position switch changes the signal applied to the voltmeter from the three output phases A three pole circuit breaker is on the left side of the front panel The circuit breaker is used to switch power to the unit When the circuit breaker is switched ON the amber indicator lamp above the circuit breaker illuminates The front panel has a subpanel with a keypad remote lamp LCD display and a viewing angle adjustment The 20 key keypad allows the power source to be manually programmed at the front panel The knob labeled VIEW ANGLE may be turned to adjust the contrast of the front panel display The remote lamp illuminates when the AC Power System has been addressed through the IEEE 488 interface GPIB 3 3 FRONT PANEL INDICATORS A lamp is located just above the input circuit breaker It illuminates when power is applied and the circuit breaker is on An analog voltmeter that indicates from 0 to 300 volts shows the actual voltage of the phase A B and C outputs The phase is determined by a three position toggle sw
124. mplifier assembly 4009 423 The adjustments may have to be performed for the following reasons 1 An output amplifier has been repaired For all power systems except 2750L 3P 4500L 3P and 6000L 3P unable to obtain rated output current 3 There is an output current from an amplifier used in any power system except 2750L 3P 4500L 3P and 6000L 3P when there is no load on the system output 4 4 3 GAIN BALANCE FOR PARALLEL AMPLIFIERS 96 These are nonperiodic adjustments The adjustments are required if it is impossible to perform the current or power measurement calibration Ref Paragraph 4 3 3 and or 4 3 4 page 91 4 4 4 CURRENT TRANSFORMER ADJUSTMENT 97 This is a nonperiodic adjustment The adjustment is required if the rated output current is not available from an AC Power System 4 4 5 LOAD BALANCE ADJUSTMENT 98 This is a nonperiodic calibration The calibration is required if the available output current is not equal to the programmed current limit value The available output current may exceed the programmed value by 10 82 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 4 4 6 OUTPUT PHASE ANGLE CALIBRATION 101 This is a nonperiodic calibration The calibration is required if there is an error
125. n 1997 2002 Warning regarding Medical and Clinical use of California Instruments products California Instruments products are not designed with components and testing intended to ensure a level of reliability suitable for use in the treatment and diagnosis of human beings California Instruments products are NOT intended to be used to monitor or safeguard human health and safety in medical or clinical treatment and California Instruments assumes no responsibility for this type of use of its products or software 147
126. n 107 5 7 RANGE RELAY BOARD mnn 107 58 AMPLIFIER MODULES n sns n nennen ense nsns n nee nn sns 107 5 9 OSCILLATOR MODULE 108 5 10 CPU GPIB BOARD mm mnn 108 5 11 PHASE A REF 109 5 12 PHASE B C BOARD 109 5 13 DISPLAY 109 SECTIONG MAINTENANCE AND TROUBLESHOOTING 111 61 GENERAL mmm 111 6 2 POOR VOLTAGE ACCURACN 111 6 3 POOR OUTPUT VOLTAGE REGULATION 111 64 OVERTEMPERATURE LAMP ON 111 6 5 OVERLOAD LAMP ON 112 66 CANT PROGRAM AC POWER SYSTEM ON GPIB 112 6 7 DISTORTED OUTPUT 112 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 6 8 OUTPUT 113 6 9 MODULE REMOVAL 113 6 10 OSCILLATOR MODULE REMOVAL REPLACEMENT 113 611 AMPLIFIER
127. ncy of 360 Hz 6 ENT 360 PRG 3 Select the RMP A screen and specify the ramp parameters of the independent parameter FRQ of DLY 2 seconds STP 2 Hz and VAL 440 Hz 9 0 2 PRG B 02 440 4 Select the RMP screen and the ramp parameter of the dependent parameter of STP 5 volts 10 ENT B 0 5 PRG 5 At this point the program may be executed by depressing the ENT key or stored in a register 3 5 15 ERROR MESSAGES Table 3 9 shows all of the possible error messages displayed on the front panel display The cause of the error mes sage is also shown 3 5 16 TO PROGRAM FREQUENCY VOLTAGE VOLTAGE RANGE AND CURRENT LIMIT DEFAULT VALUES The default values are the values that appear at power up and after the GPIB Device Clear command To set any of the default values perform the following steps 1 Depress the MNU key several times until the first menu screen is displayed as illustrated below SNC 01 CLK 02 WVF 03 RNG 04 not be displaved Depends on options 2 Enter the kev sequence 959 ENT 43 INSTRUCTIONAL MANUAL August 2001 ERROR MESSAGE CRL FAULT 1 FAULT TEMP 1 FAULT CPU FAULT DMA OVERFLOW EXT SVNG ERROR BUS LOCAL ERROR SVNTAX ERROR AMP RANGE ERROR FRQ RANGE ERROR PHZ RANGE ERROR CRL RANGE ERROR RNG RANGE ERROR RMPA RANGE ERROR DIV ERROR OVERFLOW ERROR 2750L P 4500L P 6000L P Rev K CA
128. nd enter a value for calibration 40 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 5 11 TO PROGRAM THE EXTERNAL CLOCK CLK 2 LK Option The clock selection is an option for the AC Power System The CLK screen displays whether the AC Power System is operating in the external EXT or internal INT CLK mode of operation While viewing this screen to select the EXT CLK mode depress the EXT key followed by the PRG and ENT key Example EXT PRG ENT NOTE Before selecting the External clock mode ensure that the AC Power System containing the oscillator has the proper clock and lock signals applied to the BNC connectors on the rear panel Failure to have the proper clock and lock signals when the EXT CLK mode of operation is selected may result in an AMP FAULT error message No output from the AC Power System will be available To return to the internal INT CLK mode of operation depress the INT or any even numeric key followed by the PRG and ENT key while viewing the CLK screen Example INT PRG ENT 3 5 12 TO PROGRAM REGISTERS AND RAMPS The AC Power System has 16 registers that can be used to store setups All of the data stored in the registers will be retained during power down Register operation may be chained to another register by adding the REC and register number to any setup sequence The REC and REG keys are used for register operations Any of the previous examples may be stored in a register by addin
129. nding on the OP code an output voltage or voltages may be programmed or set as an upper or lower limit in 0 1 volt increments up to the range limit The channel indicator which precedes the modifier determines which phase or phases will be so set The number which follows the modifier in the string determines the amplitude to be programmed For example to set the output voltage of all three phases to 110 volts the following string is transmitted FNC ACS 00 SET VOLT 110 CR lt LF gt The noun modifier may also be used in a string that uses the sensor measurement capability of the power source An example of requesting the measurement of power source phase A output voltage follows Note that the noun modifier precedes the channel indicator FNC ACS VOLT CH01 CR lt LF gt FTH VOLT CR lt LF gt When the output voltage of phase A is 110 0 the power source responds with SP 110 0 CR lt LF gt 3 8 4 2 FREQ The FREQ frequency noun modifier may be contained in a string as an instruction to the power source with SET SRX or SRN The channel indicator which precedes the modifier determines which phase or phases will be so set Any one of the four channel indicators may be used in the string The number which follows the modifier in the string determines the frequency to be programmed For example to program all phases to 440 Hertz the following string is transmitted FNC ACS SET FREQ 440 lt CR gt lt
130. ne regulation 0 02 of full scale for 10 line change Load regulation 0 05 of full scale from no load to full load Voltage accuracy no load 232 based on TRMS measurement 45 to 5000 Hz values specified otherwise 0 135 volts from 5 to 135 volts 0 54 volts from 135 to 312 volts 1 5 volts from 5 to 200 volts EHV Option 45 to 1 KHz 3 0 volts from 200 to 400 volts EHV Option 45 to 1 KHz Add 2 of programmed value below 45 Hz Frequency Range At Full Scale Voltage 2750L 3 4500L 3 6000L 3 45 Hz to 5000 Hz at 502C maximum currents All other models 45 Hz to 2000 Hz at 352C maximum currents All 60001 systems 45 Hz to 440Hz and 6000L 1P At less than Full Scale Voltage Refer to graph below e CA OUTPUT CURRENT 2 7 45 OUTPUT FREQUENCY 2 Frequency accuracy 0 001 of programmed value Frequency resolution 0 01 Hz to 99 99 0 1 Hz to 999 9 1 Hz to 5000 Hz Phase angle accuracy With the same load on each phase Phase B and C relative to phase A 2 degrees to 2 KHz 3 degrees to 5 KHz PROTECTION 5 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Output overload Automatic default with output relays open when programming from 5 0 volts Output short circuit Immediate default with no automatic recovery Input Overvoltage Overvoltage causes the circuit breaker to trip Loss of Input phase No output for loss of Phase B or C Normal operation
131. nter to the phase A output Program the output to 135 0 volts and 400 0 Hz Engage the low pass filter on the Frequency Counter to obtain the output frequency If the Frequency Counter does not indicate 400 000 0 004 Hz adjust C43 for the correct frequency Refer to Figure 4 1 4 4 2 GAIN BALANCE ADJUSTMENT CAUTION The Gain Balance Adjustment should not be made unless an amplifier assembly has been repaired Each amplifier has been adjusted at the factory for an exact full scale output voltage 135 67 5 156 or 200 volts for standard LV HV or EHV voltage ranges with a 5 000 VRMS amplifier input voltage The amplifier input voltage may be checked at TP4 TP5 and TP6 on the Current Limit Board for Phase A B and C amplifiers respectively TP1 is the reference test point The following adjustment is for all power system models except the 2750L 3P 4500L 3P and 6000L 3P The 2750L 4500L 3P and 6000L 3P do not require a gain balance adjustment Before performing the adjustment the top cover of each power source must be removed 4 4 3 GAIN BALANCE FOR PARALLEL AMPLIFIERS If applicable program the output to the 1 phase mode The following table shows the test point that will be used to measure the circulating current between the amplifiers under a no load condition Jumper W2 on the Current Limit Board must be installed for 4500L 1 6000L 1 9000L 1 12000L 1 135001 1 18000L 1 and 18000L 3 AMPLIFIER CURRENT LIMIT BOARD TEST POINT
132. nu the following Menu will appear 1 Emg Vunder Test 2 Emg Vover Test 3 Return If Key 1 is selected Volt Menu from the Abnormal Menu the following Menu will appear 1 Ab Vunder Test 2 Ab Vover Test 3 Return If Key 3 or Key 7 is selected from the Normal Menu another screen will appear as follows Enter Modulation Rate in Hz and ENT The numeric value must be within the limits for the test performed See Figure 2 and Figure 3 If Key 4 is selected from the Normal Menu the following screen will appear as follows Enter Test Number 1 to 15 and ENT see Table 1 10 5 GPIB OPERATION The following command will be used to execute the appropriate section of DO 160C Remote Command DO160 A B C NORMal state FREQ MINinum DO160 A B C NORMal state FREQ MAXimum DO160 A B C NORMal state VOLTage UNBalance DO0160 A B C NORMal state WAVe form DISTortion DO160 A B C NORMal state VOLTage MODulation numeric DO160 A B C NORMal state FREQency MODulation numeric DO160 A B C NORMal state MOLTage UNDer lt numeric gt DO160 A B C NORMAL state VOLTage OVER DO160 A B IC EMERgency FREQ MINimum DO16OJAJIBIICI EMERgency FREQ MAXimum 160 EMERgency VOLTage UNBalance DO160 A B C ABNormal stage VOLTage MINimum DO160 A B C ABNormal state VOLTage MAXimum DO160 A B C ABNormal stage MOLTage UNDer DO160 A B C
133. o terminate a programmed ramp or other program The following setup string will recall the values from register 9 and delay execution until the GET message is received Note GET is the abbreviation for the GPIB Group Execute Trigger message and does not represent a series of ASCII characters See Table 3 10 REC9TRG 66 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 3 15 STATUS BYTE VALUES SRQ REPORTED MESSAGE CAUSE AMP A FAULT Overload or sense line fault AMP B FAULT Overload or sense line fault AMP AB FAULT Overload or sense line fault AMP C FAULT Overload or sense line fault AMP AC FAULT Overload or sense line fault AMP BC FAULT Overload or sense line fault AMP ABC FAULT Overload or sense line fault CRL FAULT Output current exceeds program value TEMP A FAULT Amplifier overtemperature TEMP B FAULT Amplifier overtemperature TEMP AB FAULT Amplifier overtemperature TEMP C FAULT Amplifier overtemperature TEMP AC FAULT Amplifier overtemperature TEMP CB FAULT Amplifier overtemperature TEMP ABC FAULT Amplifier overtemperature RNG RANGE ERROR RNG value greater than highest range AMP RANGE ERROR AMP value greater than RNG value FRQ RANGE ERROR FRQ value is less than 45 or greater than 2000 Hz PHZ RANGE ERROR PHZ value greater than 999 0 CRL RANGE ERROR CRL value greater than maximum value RMPA RANGE ERROR DLY STP or VAL values wrong SYNTAX ERROR Wrong string SYNTAX BUS LOCAL ERROR Remote message sen
134. o the Input Power Supply A5 DC voltages from the Input Power Supply are routed to the Power Mother Board A4 the Control Mother Board A8 and the Auxiliary Power Supply 7 The Programmable Oscillator assembly A11 generates the oscillator waveforms and power source control and measurement signals The oscillator assembly is connected to the rest of the power source through the Control Mother Board A10 The three amplifier modules are 1 2 They take their DC supply voltages and input signal from the Power Mother Board 4 They produce the high power outputs for the primary of the output transformers T1 T2 and The outputs are routed through the Power Mother Board to the output transformers The Range Relay Board is identified as This board assembly configures the secondaries of the output transformers for the correct output voltage range The outputs from the AC Power System are taken from the Range Relay Board This board also has relays that switches the output to the 1 phase mode and opens the outputs There is also a circuit on the board that senses for incorrect sense line connections The board assemblies are described in more detail in the following paragraphs 5 3 INPUT POWER SUPPLY This assembly is identified as A5 It generates the high power 300 VDC supply This supply voltage is connected to the filter capacitor C1 and to the Power Mother Board C1 is mounted on the bottom cover of the AC Powe
135. oltage Refer to MIL 704D Doc Figure 7 Overvoltage per Figure 10 page 154 Undervoltage per Figure 11 page 154 2 Abnormal frequencv Refer to MIL 704D Doc Figure 8 Overfrequency per Figure 12 page 155 Underfrequency per Figure 13 page 155 119 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 8 3 4 EMERGENCY OPERATION Refer to MIL 704D Doc 5 2 5 1 Voltage per Figure 14 page 156 2 Frequency per Figure 15 page 156 8 4 KEYPAD ENTRY Refer to page 31 for Keyboard flow chart To perform a test from the key board the following key sequence is required 704 ENT The following screen will appear MIL704D SelA B C ENT all CLR EXIT Pressing the A B C or any combination selects the phase in test Press ENT without the phase select for simultaneous three phase test The following screen appears for a short time TEST A B C CLR to Reselect The next screen is Apply Nom Output Press ENT When ENT is selected the following screen appears Press MNU to Select Test The MNU screen has two lines of selection shown at a time There are 3 different types of operations that can be selected from a MENU acreen If the word MENU appears for the item selected another MENU screen will be displayed If the word TEST appears fir the item selected the test will start The display will return to the previous screen if the word RETURN appears for the item selected The Main Menu will appear as follows
136. onding argument be sent string with common delimiter 3 7 3 NUMERIC DATA FIELD Parameter values mav be sent as an unsigned value with a decimal point or a decimal point with an exponent The phase value mav be sent as a signed value The Decimal Point for numeric data values mav be either sent or inferred The two following ASCII strings will represent 115 volts AMP115 AMP115 0 There mav be anv number of digits following the decimal point not to exceed the 256 bvte DAM buffer but onlv the Least Significant Digit LSD of resolution will be recognized The LSD for amplitude is 0 1 volts LSD for frequencv is either 0 01 0 1 or 1 Hz for up to 99 99 999 9 or 5000 Hz respectivelv Any parameter s numeric value may be of a mixed form with a decimal point and exponent The exponent may be a numeric with or without leading zeros up to a value of 63 The following ASCII strings will represent 15 volts AMP1 15E2 AMP1 15E 2 AMP1 15E 02 AMP1150E 1 A positive exponent value is represented by either an ASCII or an unsigned value 3 7 4 PROGRAM HEADERS A Program Header is a mnemonic of a series of three ASCII characters used to select a function or identify the data it precedes The header is an abbreviation of the program function it identifies The header may be followed by a header extension to separately program each output phase A B or C to different values If an extension is not added to
137. or 5 seconds The above sequence will repeat itself three times 10 6 2 EMERGENCY TEST This test could be performed in addition to the Normal State test for equipment designed to operate under emergency electrical system 10 6 2 1 EMERGENCY STATE MINIMUM VOLTAGE AND FREQUENCY TEST DO160 A B C EMERgency VOLT_FREQ MINimum This test is similar to the test at 6 1 1 except the output frequency changes from 400 Hz to 360 Hz 10 6 2 22 EMERGENCY STATE MAXIMUM VOLTAGE AND FREQUENCY TEST DO160 A B C EMERgency VOLT FREQ MAXimum This test is similar to the test at 5 1 2 except the output frequency changes from 400 Hz to 440 Hz 10 6 2 3 EMERGENCY STATE VOLTAGE UNBALANCE DO160 A B C EMERgency VOLTage UNBalance This test is similar to the test at 6 1 3 except the output voltage changes from 115 volts to 111 volts and from 115 volts to 119 volts 10 6 3 ABNORMAL STATE 10 6 3 1 ABNORMAL STATE MINIMUM VOLTAGE DO160 A B C ABNormal stage VOLTage MINimum This test will drop the output to 97 volts for 5 minutes 10 6 3 2 ABNORMAL STATE MAXIMUM VOLTAGE DO160 A B C ABNormal state VOLTage MAXimum This test will raise the output voltage from 115 volts to 135 volts for 5 minutes 141 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 10 6 3 3 ABNORMAL STATE UNDERVOLTAGE DO160 A B C ABNormal stage MOLTage UNDer This test will drop the output voltage from 115 volts to 60 volts for 7 seconds 10 6
138. ories a periodic and a nonperiodic calibration The periodic calibration should be performed at a 1 year interval The nonperiodic calibration should only be performed if the periodic calibration cannot be performed or if an adjustable subassembly is replaced The following is a listing of paragraphs that may be performed to fix an indicated problem Any AC Power System with a 1 phase output or that has more than one chassis will have paralleled amplifiers PARAGRAPH TITLE PAGE 4 3 1 OUTPUT VOLTAGE CALIBRATION 88 This is a periodic calibration of the output voltage 4 3 2 VOLTAGE MEASUREMENT 88 This is a periodic calibration of the voltage measurement function 4 3 3 CURRENT MEASUREMENT CALIBRATION 91 This is a periodic calibration of the current measurement function 4 3 4 POWER MEASUREMENT CALIBRATION 91 This is a calibration of the power measurement function 4 3 5 REMOTE MEASUREMENT CALIBRATION 92 4 4 1 OUTPUT FREQUENCY CALIBRATION 96 This is a nonperiodic calibration of the output frequency 4 4 2 AMPLIFIER GAIN BALANCE ADJUSTMENT 96 These are nonperiodic adjustments of the output a
139. pause of 5 seconds between tests is asserted 8 6 5 MIL704D TEST MILZOADJAJIBIIC This test will combine all the tests listed above in one test in the sequence listed A 5 second time delav separate the parts of the test Tests will be performed on the selected phases 126 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 704D FLOW CHART MIL704D SelA B C ENT all 5 CLR RESELECT APPLV NORM OUTPUT PRESS ENT CLR PRESS MNU TO SELECT TEST MNU 1 STEADY St MENU 2 TRANSIENT MENU 3 ABNORMAL MENU 4 EMERGENCY MENU Return 5 ALL MIL704 TEST 1 VOLTAGE TEST 1 VOLTAGE TEST 2 2 FREQUENCY TEST 3 EMERGENCY TEST 4 RETURN 1 VOLT TRANS MENU 2 FREQ TRANS MENU 3 TRANSIENT TEST 1 VOLTAGE MENU 4 RETURN 2 FREQUENCY MENU 3 ABNORMAL TEST 4 RETURN 1 HIGH VOLT TEST 1 HIGH FREQ TEST 1 OVERVOLT TEST 1 OVERFREQ TEST 2 LOW VOLT TEST 2 LOW FREQ TEST 2 UNDERVOLT TEST 2 UNDERFREQ TEST 3 VOLT TRANS TEST 3 FREQ TRANS TEST 3 VOLTAGE TEST 4 RETURN 4 RETURN 4 RETURN 127 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 704D SYNTAX FLOW MIL704D A B C 5 state VOLTage VOLTage MVOLTage UNBalance VOLTage OVER PHASe DIFFerence MVOLTage UNDER WAVeform DISTortion FREQuency FREQuency OVER FREQuency UNDER TRANsient EMERgency V
140. prompt accurate service please provide the following information when applicable for each replacement part ordered a Model number and serial number of the instrument b California Instruments part number for the subassembly where component is located PARENT ITEM Component reference designator SEQ d Component description DESCRIPTION TRUNCATED e Component manufacturer s FSCM number VENDOR f California Instruments part number COMPONENT ITEM NO replacement part orders should be addressed to California Instruments Attention Parts Department 9689 Towne Centre Drive San Diego California 92121 1964 117 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K TOP ASSEMBLY REPLACEABLE PARTS 4500L P TOP ASSEMBLY NO 4009 471 1 6000L P TOP ASSEMBLY NO 4009 471 4 TOP ASSEMBLY NO WITH UP OPTION 4500L P TOP ASSEMBLY NO 4009 472 5 6000L P TOP ASSEMBLY NO 4009 472 8 SEQ NO ITEM NO COMPONENT DESCRIPTION VENDOR QTY Al 4009 456 2 HEATSINK ASSY SW AMP 16067 1 0 A2 4009 456 2 HEATSINK ASSY SW AMP 16067 1 0 A3 4009 456 2 HEATSINK ASSY SW AMP 16067 1 0 A4 4009 724 1 PC ASSY MOTHER 16067 1 0 5 4009 739 1 ASSV POWER SUPPLV 16067 1 0 A5 UP OPTION 4009 727 2 PC ASSV LOW VOLT POWER SPLV 16067 1 0 6 4009 733 1 ASSV RANGE 16067 1
141. put is set to 115 0 volts is as follows FNC ACS CH01 SET VOLT 115 0 lt CR gt lt LF gt Note that all strings end with ASCII lt CR gt lt LF gt The power source is configured to recognize this series of ASCII characters as indicating end of string EOS 70 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 3 16 CHANNEL DESIGNATORS AND NOUN MODIFIERS CHANNEL DESIGNATOR MODIFIER FUNCTION Simultaneously set amplitude for Phase A Phase B and Phase C Set Phase A Amplitude Set Phase B Amplitude Set Phase C Amplitude Set Frequency Set Frequency Set Frequency Set Frequency Syntax error with CHOO Set Phase A phase angle Set Phase B phase angle Set Phase C phase angle Simultaneously set Phase A Phase B and Phase C current limit Set Phase A current limit Set Phase B current limit Set Phase C current limit Set sync to external signal Send power measurement data for Phase A Phase B and Phase C to Bus Controller Send power measurement data for Phase A to Bus controller Send power measurement data for Phase B to Bus Controller Send power measurement data for Phase C to Bus Controller Send apparent power measurement data for Phase A Phase B and Phase C to Bus Controller Send apparent power measurement data for Phase A to Bus Controller Send apparent power measurement data for Phase B to Bus controller Send apparent power measurement data for Phase C to Bus Controller Send output curren
142. put will appear after CLS has been sent If the power source has the MT option do not program a voltage greater than 30 volts without closing the output relays or the confidence loads in the power source may be damaged The OPN open OP code opens the relay at the power source output Prior to opening the relay the output of the power source is reduced to zero OPN lt CR gt lt LF gt Opens relay 3 8 3 5 RST The RST reset OP code resets the power source to its default values as follows Output Amplitude 5 0 Volts Frequency Selected default frequency Phase A Phase Angle 0 Degrees Phase B Phase Angle 240 Degrees Phase C Phase Angle 120 Degrees Sync Internal Current Limits Maximum current of power system Power Source Relays Open Relative to External Sync In addition all non catastrophic error messages SYNTAX and RANGE errors are cleared All other error messages are not affected OP code RST must be followed by ACS and any one of the valid channel designators CHOO through CHO3 e g RST ACS lt LF gt 3 8 3 6 CNF and IST The CNF confidence OP code instructs the power source to perform a confidence test of the entire power system The OP code stands by itself The confidence test flow diagram is shown in Figure 3 7 confidence testing detects fault an appropriate message is transmitted to the Bus Controller on receipt of an STA OP code see paragraph 3 8 3 9 The output rel
143. r Board This switch is used to connect the front panel analog meter M1 to either the phase A B or C output 5 7 RANGE RELAV BOARD The Range Relav Board has all of the AC Power Svstem relavs These Relavs are operated from 450 VDC The output relav is opened bv a logic low on the CNF control line The range relav is switched to the high voltage range bv logic low on the mna mr control line The output is in the 1 phase mode when the PARALLEL control line is driven to approximatelv 410 VDC There are three current transformers on the Range Relav board These transformers generate an AC voltage that is proportional to the output current The voltages are identified as TA and 10 amp load current is represented bv a 1 00 signal in the 3 phase mode 5 8 AMPLIFIER MODULES AC Power System has three Amplifier Modules In the 3 phase mode one amplifier is used for each of the three outputs In the 1 phase mode the three outputs are paralleled at the secondaries of the output transformers The Amplifier Modules operate in a switch mode to obtain high efficiency These switch mode amplifiers operate at 200 KHz 107 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Each Amplifier Module obtains its input signal from the Current Limit Board These three input signals are identified 516 60 SIG and C SIG 5 00 VRMS input signal will generate a full scale output voltage at the output
144. r System The Input Power Supply also has circuits that generate the DC voltages identified as 18V 15VSW 8VSW and 8V The 18V supplies are used for the Oscillator Module and the Current Limit Board The 8V supply is used for the Oscillator Module The 15VSW supplies are used for the three Amplifier Modules 105 INSTRUCTIONAL MANUAL August 2001 Figure 5 1 AC POWER SVSTEM BLOCK DIAGRAM POWER MOTHER BOARD AMP A MODULE 5 516 A4 DVERTMP Al 300VDC 15VSW 8VSW 15 5 1 MODULE 516 pu ere MOTHER 300VDC ee 4300V DC BOARD TBI 45 a SIG _ 48VsV INPUT E i SIG 1SVSW1 FBVSW SIG 2 GND 8V MODULE I5VSW JC SIG Ty Den HISVSWI 8VSW 300VDC c BUT AUXILLARY 50VDC an eee POWER 7 155 1 8VSW SUPPLY 2 15VSW TO NES Welle OSC MODULE CT 2 OSC rt T L CL A B C DUT 5 SENSE 6 Te LL HC CNF RNG Hi ous Te NEUT PARALLEL 18V 8V T3 C La OVE IL wl NEUT CURRENT LIMIT 2 SOWIE 25V x ISC be FLT ao ABAC SIG CNF RNG HLPARALLEL venvbc
145. r all other models When PWR is used as a header in a string with no argument it will cause the front panel to display the output power 3 7 29 TO TALK THE MEASURED OUTPUT POWER FACTOR TLK PWF PWF may be used as an argument to the header TLK with an A B or C extension When used as an argument it will set up the AC Power System to measure the output power factor from 0 to 1 000 When PWF is used as a header in a string with no argument it will cause the front panel to display the output power 64 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K factor 3 7 30 TO TALK THE MEASURED OUTPUT APPARENT POWER TLK APW APW may be used as an argument to the header with an A or extension When used as an argument it will set up the AC Power System to measure the Apparent Power output in VA with 1 VA resolution for the 4500L 3Pand 2750L 3P The apparent power is measured in KVA with 0 01 KVA resolution for all other models When APW is used as a header in a string with no argument it will cause the front panel to display the measured output Apparent Power 3 7 31 TO TALK THE MEASURED OUTPUT FREQUENCY TLK FQM FQM may be used as an argument to the header TLK There are no extensions for this argument When FQM is used as an argument it will set up the AC Power System to measure the output frequency in hertz When is used as a header it will cause the front panel to display the measured output frequ
146. rogrammed for all outputs To program phase A and C to square wave SQW A ENT select the sine wave waveform for phase depress the SNW even number followed described above 3 5 10 TO PROGRAM EXTERNAL SYNCHRONIZATION SNC 1 The SNC screen displays whether the external or internal SNC mode of operation has been selected While viewing this screen to select the external SNC mode depress the EXT key followed by the PRG and ENT key Example EXT PRG ENT While operating in the EXT SNC mode the FRQ screen will display the frequency of the External Sync signal The signal must be between 45 Hz and 550 Hz NOTE When viewing the SNC CLK or WVF screens the MON or PRG keys must be used to sequence to another screen The MNU key can also be used to return to the menu then followed by any screen selection To return to the internal SNC mode of operation depress the INT key or any even numeric key followed by the PRG and ENT key while viewing the SNC screen Example INT PRG ENT If the External Sync signal is not between 45 Hz and 550 Hz the message will be EXT SYNC ERROR In the EXT SNC mode the A value on the PHZ screen represents the angle of the A output leading the External Sync input If the zero degree point of the power source does not match the zero degree point of the External Sync input the POF screen may be used for calibration Select the POF screen a
147. rror message will be shown on the display and reported through the external interface Refer to Figure 2 2 for all multiple power source power system hook ups NOTE A special hook up is required for all multiple power source power systems with the MODE Option Refer to Figure 2 2 for the connections The 1 phase output for a single power source with the MODE Option is available from TB1 pins 3 and 4 2 6 OUTPUT VOLTAGE RANGES The standard voltage ranges for this AC power system are 135 and 270 Selection of the 270 volt range causes the front panel HIGH RANGE lamp to illuminate The range may be changed from either the front panel keypad or through the GPIB input All voltages are programmed line to neutral for 3 phase operation 2 7 FUNCTION TEST Refer to Figure 2 3 for the test setup Perform the following test sequence 1 Apply the AC line power and turn on the front panel circuit breaker No loads should be connected to the output terminal block 2 Verify that the POWER ON lamp is lit 20 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 With the front panel keypad program the HI output voltage range with the following key sequences 4 ENT To select the Range screen RNG To program the HI range ex 270 volt range 270 PRG ENT 4 Verify the HIGH RANGE lamp is lit 5 Program the output to maximum voltage with the following key sequences Depress the MON key 1 time to select the Amplitude screen AMP
148. s 1 Connect the AC voltmeter to the phase to be calibrated 2 Depress the MNU key several times until the first menu screen is displayed as illustrated below SNC 01 02 WVF 03 RNG 04 May not be displayed Depends on configuration 3 Enter the key sequence 959 ENT 4 Depress the MNU key several times until the configuration menu screen is displayed as illustrated below CFG 16 ALM 17 FLM 18 CLM 19 5 Select the CAL screen with the key sequence 12 ENT 6 Depress the A B or C key for the output phase to be calibrated Verify that the other phases are in the MON mode The or C keys will switch the respective phase between the MON and PRG mode If the output voltage is greater than the programmed output depress and hold the key until the correct output voltage has been reached The key is used if the output is less than the programmed value 7 Repeat step 6 for other outputs to be calibrated 4 3 2 VOLTAGE MEASUREMENT CALIBRATION For calibration of voltage measurement first perform the output voltage calibration and then perform the followings steps 1 Remove the load from the AC Power System and program 60 Hz and 135 0 volts 2 Depress the MNU key several times until the Menu screen is displayed as illustrated below SNC 01 CLK 02 WVF 03 RNG 04 May not be displayed Depends on configuration 3 Enter the key sequence 959 ENT 88 INSTRUCTIONAL MANUAL 2750L P 4500L P 600
149. s malfunctions or service failures caused by owner s failure to follow California Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failures surges fire flood accident actions of third parties or other events outside reasonable control SOME STATES DO NOT ALLOW LIMITATIONS ON THE LENGTH OF AN IMPLIED WARRANTY OR THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSIONS MAY NOT APPLY TO YOU THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE If any part of this Agreement shall be determined by a court to be invalid illegal or unenforceable the remaining provisions shall in no way be affected or impaired thereby GOVERNING LAW This Agreement and Limited Warranty are governed by the laws of the state of California without regard to conflict of law provisions INSTALLATION AND OR USE OF THIS PROGRAM CONSTITUTES ACCEPTANCE OF THESE TERMS AND RESTRICTIONS BY THE USER COPYRIGHT 1997 2002 Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of California Instruments Corporation California Instruments Corporatio
150. s specified for full power from 45 to 1000 Hz The output frequency of all power systems can be programmed down to 17 Hz at a reduced output voltage 1 3 ACCESSORY EQUIPMENT RACK SLIDES General Devices Model CTS 1 20 B307 2 rack slides may be attached to the sides of the power source using 10 32 X 1 2 flat head screws 1 4 SPECIFICATIONS Table 1 1 contains the operation specifications of the AC Power System All specifications are tested in accordance with standard California Instruments test procedures The following specifications apply for operation at 100 of full scale voltage constant line voltages and under no load and with External Sense Lines connected unless specified otherwise INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 1 2 SPECIFICATIONS 4500L P 2750L P 6000L P All specifications apply using external sense 23 5 C constant line and load conditions unless specified otherwise after 30 minute warm up ELECTRICAL OUTPUT SPECIFICATIONS VA CURRENT PER PHASE At full output voltage VOLTAGE RANGE MODEL TOTAL PER PHASE 135 270 502 352 502 352 502 352 502 352 2750L 3 2700 3000 900 1000 6 66 7 40 3 30 3 70 2750L 1 2750 3000 2700 3000 20 0 22 22 10 00 11 11 4500L 3 4500 5000 1500 1667 11 12 12 34 5 56 617 45001 1 4500 50007 4500 5000 33 34 37 04 16 67 18 52 60001 3 5330 6000 1770 2000 13 12 14 82 6 56 7 41 60001 1 5330 6000 5330 6000 39 35 44 44 19 68 22 22 90001
151. s the terminal block for the optional Auxiliary outputs The Auxiliary outputs are fixed 26V rms Phase D and 5V rms Phase E output voltages Refer to Figure 3 2 for the terminal identification for TB2 J6 pins 5 and 6 are the External Sense input for the Phase D output For the specified load regulation at the load the External Sense input should be connected across the Phase D load 3 4 7 CLOCK J1 is supplied on the master power source when the LK option is ordered This signal is used by California Instruments power controllers to synchronize oscillators in multiple power source systems The connector is installed as an option 3 4 8 LOCK J2 is supplied on the master power source when the LK option is ordered This signal is used by California Instruments power controllers to synchronize oscillators in multiple power source systems The connector is installed as an option 3 4 9 Discrete Fault Interrupt J3 is supplied when the MT option is ordered This BNC connector is wired to a relay in the power controller The 30 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K normally closed relay contacts are held open by the power controller under normal running conditions The contacts are allowed to close after a fault or if power is lost to the power source The connector is installed as an option 5 VDC 10K 47 51 Bm FUNCTION STROBE OUTPUT 5 MILLISECONDS J 1
152. t CH03 gt gt APOW gt gt POWR gt gt gt gt gt lt gt lt 1 gt gt gt gt FREQ gt gt PANG gt gt CURR gt gt APOW gt gt POWR gt Figure 3 6 CIIL PROGRAM SYNTAX 69 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 8 2 CHANNEL DESIGNATORS The channel designator consists of a colon followed by the syntax CH and a single digit or two digit channel number The general form for the channel designator is CHnn and may be any of the following Designates all outputs 01 Designates Phase A CH02 Designates Phase B Designates Phase Channel designators and their applicable noun modifiers are listed in Table 3 17 3 8 3 OP CODES Each of the OP codes listed is described in following paragraphs 3 8 3 1 FNC All set up strings must begin with OP code FNC followed by the noun ACS and the channel designator CHnn e g FNC ACS 3 8 3 2 SET The SET set up OP code must be sent when a characteristic included in the output string is to be programmed The noun modifiers that may follow the SET OP code are VOLT FREQ SYNI CURL TRSC and PANG A SET OP code is always followed by a noun modifier A SET string has the following string elements FNC ACS CHnn SET lt NOUN MOD gt lt NUMERIC gt lt CR gt lt LF gt An example of a setup string where the phase A out
153. t may be necessary to replace the respective amplifier Refer to paragraph 6 11 page 114 4 One the internal fuses F1 F2 has failed SOLUTION Replace the fuse Remove the input power and discharge capacitor C1 before replacing the fuse Refer to paragraph 6 11 page 114 6 9 MODULE REMOVAL Figure 6 1 shows the location of the internal modules and assemblies The figure shows the Amplifier Modules A1 A2 and A3 with the insulator removed 6 10 OSCILLATOR MODULE REMOVAL REPLACEMENT fault is found that requires the replacement of the Oscillator Module assembly 4009 425 perform the following steps and refer to Figure 6 1 for the module locations 1 Turn off the front panel circuit breaker 2 Remove the power system s top cover 113 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 3 4 6 11 Rev K Remove the Keyboard Display assembly by loosening the two captive screws on its front panel Unplug the ribbon cable from the Keyboard Display assembly Remove the Oscillator Module A11 by pulling up the package of PC assemblies The module is now removed To replace the module follow these steps in reverse order Make sure the ribbon cable that plugs into the Keyboard Display assembly runs between PC assembly A12 and the front panel AMPLIFIER REMOVAL REPLACEMENT If a fault has been found that indicates the failure of an amplifier module assembly 4009 423 check the condition
154. t measurement data for Phase A Phase B and Phase C to Bus Controller Send output current measurement data for Phase A to Bus Controller Send output current measurement data for Phase B to Bus Controller Send output current measurement data for Phase C to Bus Controller 3 8 3 3 SRX and SRN OP CODES The SRX set maximum OP code sets the maximum value of the programmable noun modifiers VOLT FREQ PANG and CURL It is always accompanied by a noun modifier An example of setting the maximum output amplitude of all phases to 135 volts and the output to 115 volts follows FNC ACS 00 SRX VOLT 135 SET VOLT 115 0 lt LF gt The SRN OP code sets the minimum value For example to set the minimum value of the output amplitude to 5 0 volts and the output to 20 volts the following string is transmitted FNC ACS SRN VOLT 5 SET VOLT 20 CR lt LF gt 71 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 8 3 4 OPN and CLS The CLS Close OP code closes the relay between the amplifier outputs and the output connector The CLS Op code must be followed by valid channel designator CHO1 CHO2 or CHO3 but all channels close simultaneously for any valid designator A programmed amplitude will not be generated at the output of the power source until the relays have been closed CLS CH00 lt CR gt lt LF gt Closes relay If an output voltage been programmed prior to the CLS OP code the out
155. t while in local mode EXT SYNC ERROR No external sync input or signal not between 45 and 2000 Hz CPU MEMORY FAULT CPU failed self test DMA OVERFLOW ERROR Remote message greater than 256 bytes The response after SRQ2 is included in a setup string and the execution of the string or measurement is completed No problems 3 8 REMOTE OPERATION WITH CIIL The 4500L 3P and 2750L 3P are the only Power System configuration with the MATE CIIL option When the 4500L 3P or the 2750L 3P is configured to operate with CIIL as the principal language the alternate language is APE Refer to Section 3 7 for information on the APE program syntax Using CIIL the power source will accept OP codes the noun ACS AC SIGNAL and noun modifiers to program the operating parameters of voltage frequency phase and current limit in a setup string In addition a number of OP codes cause the power source to perform a specific task such as reset and confidence testing Figure 3 6 is a summary of the CIIL program syntax 67 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 8 1 CIIL ELEMENTS The Control Interface Intermediate Language CIIL elements are OP CODES FNC SET SRX SRN CLS OPN RST CNF IST INX FTH STA GAL NOUN ACS NOUN MODIFIERS VOLT FREQ PANG CURL SYNI POWR APOW CURR TRSC CHANNEL DESIGNATORS CHO01 2 CHO3 The only noun recognized by the power source is ACS for AC Signal The
156. tage Ranges 156 312 HV option 67 5 135 LV option 200 0 400 0 EHV option Master Must be used with LK option Slave Must be used with LK option Square Wave 4500L 3P and 2750L 3P only Performance from 50 Hz to 5 KHz Rise and Fall Time 10 to 90 Less than 40 microseconds Droop Less than 10 Overshoot resistive load Less than 20 Mode Allows power system to be programmed to a 1 or 3 phase output Auxiliary outputs Option AX Master and Slave options not available with this option All specifications at 23 C and verified with TRMS voltmeter The Phase D sense lines must be connected to the Phase D output Phase D Voltage 26 0 Vrms fixed Accuracy 3296 Current 3 0 Amps Max 360 to 440 Tracks the main outputs Phase Tracks the Phase A output Accuracy 1 degree All outputs at half load 400 Hz Distortion 1 THD maximum with linear load Line Regulation Load Regulation 0 05 using external sense 0 05 using external sense Phase E Voltage 5 0 Vrms fixed Accuracy 3596 Current 5 0 Amps Max 11 INSTRUCTIONAL MANUAL August 2001 Frequency Phase Distortion Line Regulation Load Regulation MATE MT option CIIL language connector Confidence Test MIL 704D 704D option 2750L P 4500L P 6000L P Rev K 360 to 440 Hz Tracks the main outputs Tracks the phase A output with Phase D 196 THD maximum with linear load 10 196 for 10
157. the header all outputs will be programmed to the header s argument See Table 3 12 for the definition of the Program Headers and their related arguments 51 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Any header that is sent without an argument will cause the front display to show the corresponding screen Refer to Figure 3 5 for a summary of all possible command sequences Figure 3 5 REMOTE COMMEND SEQUENCES IEEE 488 PROGRAM SYNTAX PROGRAM OUTPUT PARAMETERS AMP FRQ CRL RNG OPN eWVF SNW SNC INT CLS SQW CLK EXT RAMP STEP ONE OUTPUT PARAMETERS AMP STP DLY n VAL CRL B xs DEY VAL n we PHZ RAMP STEP TWO OUTPUT PARAMETERS AMP AMP n STP n DLY n VAL STP FRQ A A CRL B n VAL n VAL PHZ C 52 40 amp REG n INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K TO CALIBRATE OUTPUT n amp DLY STP VAL n a MEASUREMENT CAL VLT CUR PWR TO REQUEST TALKING A PROGRAMMED PARAMETER OR MEASURED VALUE AMP FRQ A CRL B RNG PHZ SNC MN
158. the default Mode at power up 3 5 18 TO PROGRAM THE DROP PERIODS DRP 28 Select the phase PHZ screen by entering the keystrokes 7 ENT The display will show the PHZ parameter screen PHZ MON A 0 0 B 240 0 C 120 0 To drop the output waveform starting at 90 degrees enter the keystrokes 90 A PRG Select the Drop screen DRP 28 by entering the keystrokes 2 8 ENT The display will show the DRP parameter screen MONA 0B 0C 0 To drop the output waveform for phase A for 3 cycles enter the keystrokes 3 A PRG ENT Verify that phase A drops at the 90 degrees point of the sine wave for 3 periods of the programmed frequency 3 6 TO MEASURE THE OUTPUT Seven measurement screens display the output voltage current power apparent power power factor phase and frequency The phase A B and C output values are shown simultaneously for 3 phase systems While viewing any measurement screen except ELT any other measurement screen may be displayed by repeatedly depressing either the MON or PRG key The screen may also be displayed by entering its equivalent screen number followed by depressing the ENT key Refer to Table 3 6 for all measurement screen numbers 3 6 1 TO MEASURE THE OUTPUT VOLTAGE VLT 21 The voltage screen displays the actual TRMS output voltage with 0 1 volt resolution This voltage is the voltage at the External Sense connector of the AC Power System To access the voltage screen depress the keys 21 ENT 3 6 2 TO MEA
159. this board to match the gains of the 3 Amplifier Modules The current limit circuits are also located on the Current Limit Board These circuits receive a DC signal from the Oscil lator Module CLA B and C that is proportional to the current limit value This DC signal is compared to the output current The output current signal is identified as TA TB and TC This signal is routed to the Current Limit Board from current transformers on the Range Relay Board If the output current exceeds the programmed value an attenuator will limit the output voltage to a value that will cause the AC Power System to operate at a constant current If the output current limits the output voltage to 10 of the programmed voltage amplitude value the output will default and an AMP FAULT error message will be displayed The error message will also be reported through the IEEE 488 GPIB interface The Current Limit Board has analog switches and summing amplifiers that are used for current measurements The outputs from the summing amplifiers CT A B and C are routed to the Oscillator Module for measurement In the 1 phase mode the current from all three output current transformers are summed together for measurement This signal is identified as CT A 5 6 INDICATOR BOARD The Indicator Board has the reference designator A12 This board has LED indicators for the RANGE OVERTEMP and OVERLOAD conditions A front panel selector switch is mounted on the Indicato
160. tput Press ENT When ENT is selected the following screen appears Press MNU to Select Test 2750L P 4500L P 6000L P Rev K The MNU screen has two lines of selection shown at a time There are three different types of operations that can be selected from the MENU screen If the word MENU appears for the items selected another MENU screen will be displayed If the word Test appears for the item selected the test will start The display will return to the previous screen if the word RETURN appears for the item selected The Main Menu will appears as follows 1 Normal Menu 2 Emergency Menu 3 Abnormal Menu 4 Return If Key 1 is selected Normal Menu from the Main Menu the following Menu will appear 1 Volt Freq Menu 2 Unbalance Test 3 Volt Mod Test 4 Power Int Test 5 Volt Surge Test 6 Wave Dist Test 7 Freq Mod Test 8 Return If Key 2 is selected Emergency Menu from the Main Menu the following Menu will appear 1 Emg V F Menu 2 Emg Unbal Test 3 Return If Key 3 is selected Abnormal Menu from the Main Menu the following Menu will appear 1 Ab Volt Menu 2 Ab Vunder Test 3 Ab Vsurge Test 4 Return If Key 1 is selected Volt Freq Menu from the Normal Menu the following Menu will appear 138 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 1 Under Volt Test 2 Over Volt Test 3 Return If Key 1 is selected Volt Freq Menu from the Emergency Me
161. ues A REMOTE lamp illuminates when the AC Power System has been addressed from the IEEE 488 interface 3 4 REAR PANEL CONNECTIONS Refer to Figure 3 2 for all rear panel connections 3 4 1 POWER INPUT is the terminal block for the 3 phase input voltage Terminals 1 2 3 connect to each leg of the 3 phase input Terminal 5 is the chassis connection which should be connected to the input mains ground 3 4 2 POWER OUTPUT 1 is the power output terminal block Refer to Table 3 1 for identification of the TB1 terminals Terminal 3 and 4 are used for a 1 phase system Refer to Figure 2 2 for the output of all multiple power source power systems TB1 DESCRIPTION 1 Phase Output HI 2 Phase B Output HI 3 Phase A Output HI 4 Output Neutral Table 3 1 POWER OUTPUT TERMINAL BLOCK TB1 3 4 3 EXTERNAL SENSE J6 is the external sense input connector The external sense input of the master 4500L must be connected to the respective AC Power System output If the inputs are not connected an AMP FAULT error message will be generated Table 3 2 identifies the pins of connector J6 46 DESCRIPTION 1 Phase A Sense HI Phase A Output HI 2 Phase B Sense HI Phase B Output HI 3 Phase C Sense HI Phase C Output HI 4 Neutral Sense Neutral Output 5 Phase D sense HI Phase D Output HI 6 Phase D sense LO Phase D Output LO Table 3 2 EXTERNAL SENSE CONNECTOR J6 26 2750L P 4500L P 6000L P INSTRUCTIONAL MANUAL August
162. uipment generates potentially lethal voltages DEATH on contact may result if personnel fail to observe safety precautions DO NOT touch electronic circuits when power is applied INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 2 5 OUTPUT CONNECTIONS The output terminal block TB1 is located at the rear of the power system For a single power source power system all load connections must be made at TB1 The external sense inputs allow the power system output voltages to be monitored directly at the load and must be connected The external sense wires are connected at J6 on the rear panel Refer to Figure 2 2 for all connections The output power cables must be large enough to prevent a voltage difference greater than 2 VRMS between the voltage at TB1 and the voltage between External Sense HI and LO input Table 2 1 shows the maximum length of the output wires The table assumes the External Sense input is connected at the load Table 2 1 MAXIMUM LENGTH OF OUTPUT WIRES WIRE MAXIMUM LENGTH ft OF WIRE BETWEEN OUTPUT HI AND LOAD GAGE AWG MAX LENGTH ft 2 MAX CURRENT PER PHASE X 0 0027 MAX LENGTH ft 2 MAX CURRENT PER PHASE X 0 0017 MAX LENGTH ft 2 MAX CURRENT PER PHASE 0 00111 MAX LENGTH ft 2 MAX CURRENT PER PHASE X 0 00061 For a single power source 1 phase power system the output power is available on TB1 pins 3 and 4 The External Sense inputs must be connected or an AMP FAULT e
163. urn for the TTL external sync input It connects to the cathode of an LED at the input of an optocoupler Refer to J7 32 No connection No connection No connection MR C This is the input signal to the phase C amplifier from the internal oscillator drive signal Do not make any connection to this pin except for troubleshooting MR A This is the input signal to the phase A amplifier from the internal oscillator drive signal Do not make any connection to this pin except for troubleshooting CS C Current sum for the phase C output Make no connection to this pin CS A Current sum for the phase A output Make no connection to this pin OS C This is the output from the internal phase C oscillator Use this pin as an input if an oscillator is not installed 5 0 VRMS on this pin will generate a full scale output voltage OS A This is the output from the internal phase A oscillator Use this pin as an input if an oscillator is 29 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K not installed 5 0 VRMS on this pin will generate a full scale output voltage 7 25 CL C A DC level from the oscillator used to set the current limit for phase Make no connection to this pin J7 26 CL A DC level from the oscillator used to set the current limit for phase A Make no connection to this pin J7 27 D COM Digital common J7 28 A logic output from the internal oscillator to control the range relays A logi
164. ut LO for the DVM is TP1 of the respective Current Limit Board For all test points and adjustments refer to Table 4 2 for the respective power system 1 Program the output to the low voltage range and the output to the low voltage range and the output voltage to 80 of range Program the frequency to 200 Hz and the maximum current limit Apply the LOAD RES identified in Table 4 1 for the respective power system Check the voltages listed in Table 4 2 Check that the voltage at the respective test points are within 0 1 volts of the reference test point 2 Program the output to the maximum voltage and recheck the Table 4 2 test points If they differ by more than 0 2 volts from the reference readjust the adjustments at this full load current 98 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 4 2 AMPLIFIER LOAD BALANCE ADJUSTMENTS SYSTEM LOAD SOURCE TEST POINT ADJUSTMENT Current Limit Board ADJUST FOR 40 1V IF NEEDED 2750L 1 4500L 1 6000L 1 MASTER TP10 TP2 R1 AMP B R1 AMP Monitor voltage for reference Same voltage as TP10 9000L 2 1 12000L 2 1 MASTER SLAVE TP10 TP2 TP3 TP10 TP2 TP3 None R1 AMP B R1 AMP C R1 AMP A R1 AMP B R1 AMP C Monitor voltage for reference Same voltage as MASTER TP10 Same voltage as MASTER TP10 9000L 2 3 and 18000 4 3 MASTER SLAVES MASTER SLAVES MASTER SLAVES TP10 TP10 TP2 TP2 TP
165. when data is available after request of measurements The setup string can be of any type ramp calibration etc The following example disables GPIB SRQ SRQO 65 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 3 7 35 SERIAL POLL STATUS BYTE Once the bus controller has detected the SRQ it must determine the instrument needing service by the Serial Poll During the polling routine the instrument needing service will return a Status Byte STB greater than decimal 63 The Status Byte values for various faults are given in Table 3 15 3 7 36 END OF STRING The End of String EOS delimiter recognized by the AC Power System is the ASCII Line Feed LF Carriage Return CR followed by Line Feed may also be used for EOS The End or Identify EOI IEEE 488 message END will also be recognized The END message is sent by setting the IEEE 488 End or Identify line true with the last data byte 3 7 37 ERROR MESSAGES Table 3 15 shows all of the possible error messages that can be generated by the AC Power System These messages will also be displayed on the front panel of the AC Power System 3 7 38 GROUP EXECUTE TRIGGER The trigger mode is enabled when the mnemonic TRG is added to a setup string The trigger command may be inserted anywhere in the string When the mnemonic is detected it will delay execution of the new setup values until the GPIB Device Trigger is sent by the bus controller A GPIB Device Trigger will als
166. wly turn A9 R17 on the Current Limit Assembly in a counterclockwise direction until the output OVERLOAD indicator starts to illuminate Slowly readjust R17 in a clockwise direction just to a point that the OVERLOAD extinguishes Repeat this step for all ADJUSTMENTS listed in Table 4 3 for phase A Remove the load for phase A and repeat steps 2 through 6 for phase B and C Adjust the controls specified in Table 4 3 for phase B and C Program the CRL value to 5 amps and full voltage Verify the output faults when any phase has the LOAD RES load value 101 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 4 3 CURRENT LIMIT ADJUSTMENT SYSTEM PHASE ADJUSTMENT POWER SOURCE LOADED 6000L 3 27501 1 45001 1 60001 1 17 MASTER amp SLAVES 90001 2 1 120001 2 1 135001 3 1 180001 3 1 270001 6 1 90001 2 3 1200012 3 MASTER 8 SLAVES 135001 3 3 270001 6 3 17 90001 2 2 180001 3 3 mem 3n ALSURESFORRISES Re 7 7 1221 10 34 _ 102 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 4 4 7 OUTPUT PHASE ANGLE CALIBRATION The phase calibration values for phases B and C are entered on the Phase Offset POF screen To calibrate the output phase angle connect either a Phase Meter or an oscilloscope between the phase to be calibrated and the phase A output Program the phase or C value to be calibrated from the Phase screen PHZ If
167. y and the following OP code is sent STA lt CR gt lt LF gt The power source responds with SP CR lt LF gt 3 8 3 10 GAL The GAL go to alternate language OP code instructs the power source to discontinue use of the CIIL language and start accepting commands in the Abbreviated Plain English APE language While operating in the APE language mode sending ASCII characters CIIL will return operation to the CIIL language When power is removed and then restored the power source reverts to the native language 75 INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K Table 3 17 NON CNF STATUS MESSAGES CONDITION DEVICE RESPONSE Loaded output 7 501 SP DEV lt SP gt OUTPUT Fault 1 02 03 VOLT FAULT lt CR gt lt LF gt Source Temperature Fault 7 501 lt SP gt DEV lt SP gt SOURCE CH01 02 03 TEMPERATURE lt CR gt lt LF gt Unrecognizable OP code or 7 501 SP MOD lt SP gt SYNTAX ERROR lt CR gt lt LF gt missing OP code Good Status lt SP gt lt CR gt lt LF gt 3 8 4 NOUN MODIFIERS Program out of range for VOLT 7 501 SP VOLT FREQ PANG CURL FREQ PANG or CURL RANGE ERROR CR lt LF gt Noun modifiers are CIIL mnemonic indicating the characteristic of the signal to be described 3 8 4 1 VOLT The VOLT voltage noun modifier may be contained in a string as an instruction to the power source with SET SRX or SRN Depe

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