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iL Series User Manual

70

Rev B

California Instruments

7.3 Troubleshooting Procedure

Table 45 gives the troubleshooting procedure to isolate a fault to a circuit board or
particular circuit.

Step

Symptom

Corrective

Action

1

No output voltage/front panel display and fan off

go to

Figure 21

2

No or limited output/front panel display and fan on

go to

Figure 22

3

Turn-on Self Test Error
Error 1 Non-volatile RAM RD0 section checksum failed
Error 2 Non-volatile RAM CONFIG section checksum failed
Error 3 Non-volatile RAM CAL section checksum failed
Error 4 Non-volatile RAM WAVEFORM section checksum failed
Error 5 Non-volatile RAM STATE section checksum failed
Error 6 Non-volatile RAM LIST STATE section checksum failed
Error 10 RAM selftest
Error 11 to 18 DAC selftest, tests 1 through 8

1
1
1
1

1
1
2
2

1 Re-initialize unit and re-calibrate. If unit still has RAM error, replace the A8 DSP board. To re-initialize

unit, turn CAL ON then press 0 and 9 simultaneously. Press scroll key to model number then press
enter. When unit is re-initialized all CAL data, user defined WAVEFORM data and LIST data are
erased.

2 Replace A8 DSP board.

Table 45 : Specific Troubleshooting Procedures

7.3.1 TROUBLESHOOTING HINTS

•

If the AC power source operates properly but does not deliver full output power
capability, check the AC main fuses.

•

All amplifiers (A1, A2, A3) may be interchanged for troubleshooting purposes.

7.3.2 General Measurement Techniques

Measure the output voltage directly at the sense terminals. Select an adequate
gauge wire for load tests using the procedures given in the operating manual for
connecting the load.

7.3.3 Current-Monitoring Resistor

The four-terminal, current-monitoring resistor (current shunt) is required to eliminate
output current measurement error caused by voltage drops in leads and
connections. To eliminate output current measurement error caused by voltage
drops in the leads and connections, connect the current-monitoring resistor as a four
terminal device.

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Содержание 3000iL

Страница 1: ...iL Series AC Power Source Analyzers User Manual Revision B April 1996 Copyright 1995 1996 by California Instruments All rights reserved P N 5001 967...

Страница 2: ...ii Rev B California Instruments User s Manual AC Power Source Analyzers California Instruments Models 3000iL 3000iL 400 4500iL 4500iL 400 4801iL 4801iL 400 Copyright 1995 California Instruments Rev B...

Страница 3: ...cedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and...

Страница 4: ...mains through a grounded power cable with the ground wire firmly connected to an electrical ground safety ground at the power outlet Any interruption of the protective grounding conductor or disconnec...

Страница 5: ...ary Checkout 19 3 2 Using the Keypad 19 3 3 Output Checkout 20 3 4 In Case of Trouble 23 4 Front Panel Operation 25 4 1 Introduction 25 4 2 Front Panel Description 25 4 2 System Keys 28 4 3 Function K...

Страница 6: ...ooting Procedure 70 7 4 Firmware Revisions 71 8 Principles of Operation 76 8 1 Introduction 76 8 2 General Description 76 8 3 Assembly Descriptions 76 9 Replaceable Parts 80 9 1 Introduction 80 9 2 Re...

Страница 7: ...l Overall View 25 Figure 13 Function Keys 29 Figure 14 Entry Keys 38 Figure 15 Pulse Transients 43 Figure 16 List Transients 44 Figure 17 Trigger Delays and Phase Synchronization 46 Figure 18 Phase Sy...

Страница 8: ...26 Trigger control list display readouts 37 Table 27 List command display readouts 37 Table 28 Setting the output voltage amplitude 40 Table 29 Setting individuals output phases in three phase mode 4...

Страница 9: ...iL Series User Manual California Instruments Rev B ix page intentionally left blank...

Страница 10: ......

Страница 11: ...formation on the following tasks in these manuals Refer to the table of contents of each manual for a complete list of the topics Table 1 User Manual Organization Topic Location Accessories and Option...

Страница 12: ...d review this manual for safety warnings and instructions Safety warnings for specific procedures are located at appropriate places in the manual 1 4 General Description The AC source combines three i...

Страница 13: ...rent and peak current Real reactive and apparent power Harmonic analysis of voltage and current waveforms gives amplitude phase and total harmonic distortion results up to the 50th harmonic Triggered...

Страница 14: ...of a wide variety of AC source operating conditions Refer to the iL Series SCPI Programming Manual part number 5001 969 for further information about remotely programming the AC source 1 4 4 Output C...

Страница 15: ...A available to a load can be determined by examining figure 1 3 the output power curve This curve rates the available VA versus output voltage Full VA is available only at full scale voltage Full curr...

Страница 16: ...ments the AC source s specifications and supplemental characteristics 1 5 Options and Accessories Option Description 400 Input power 360 440 Vac three phase 47 63 Hz Table 3 Options Item CI Part Numbe...

Страница 17: ...onnector cover 250578 4 terminal digital connector plug 410636 AC input safety cover 5001 226 1 AC input safety cover strain relief 211112 AC input safety cover bushing 211114 Screw 4 AC input safety...

Страница 18: ...the AC source has to be returned Obtain a Return Material Authorization number by contacting California Instruments Customer Service department prior to returning any equipment for service Also attach...

Страница 19: ...ck the fan exhaust at the rear of the unit Figure 4 Outline Diagram 2 6 Rack Mounting Due to their size and weight iL Series AC power sources are frequently rack mounted The three iL models weigh 87 7...

Страница 20: ...r cord must be done by a qualified electrician and in accordance with local electrical codes See Figure 5 and proceed as follows Check the line fuses as follows Examine the FUSES label on the rear pan...

Страница 21: ...as a termination for each of the output phases and a floating neutral line for the phase return connections A separate earth ground terminal is located near the output terminals To minimize the possib...

Страница 22: ...e Gage AWG characteristics NOTES 1 Ampacity is based on 30 C ambient temperature with conductor rated at 60 C For ambient temperature other than 30 C multiply the above ampacities by the following con...

Страница 23: ...inal Connect the Neutral COM sense terminal connector to the neutral side of the load Figure 7 Remote Sense Connections The sense leads are part of the AC source s feedback path and must be kept at a...

Страница 24: ...information on programming external triggers is found in chapter 5 of the AC source SCPI Programming Manual Trigger IN allows negative going external trigger signals to trigger the ac source Trigger O...

Страница 25: ...re of the fault via a service request SRQ generated by the Questionable Status summary bit Figure 8 FLT INH Examples 2 12 Controller Connections The iL Series comes standard equipped with both IEEE 48...

Страница 26: ...s You can specify one of the following parity options seven data bits with even parity seven data bits with odd parity eight data bits without parity You can also specify one of the following baud rat...

Страница 27: ...e power source sets DTR false under two conditions 1 When the input buffer is full approximately 100 characters have been received it will set DTR false When enough characters have been removed to mak...

Страница 28: ...cter to be recognized by the power source while it holds DTR false the bus controller must first set DSR false Response Data Terminator All RS 232C response data sent by the AC source is terminated by...

Страница 29: ...ator on and all others off Meter mode means that the VOLTS digits indicate the output voltage and the FREQ digits indicate the output frequency The voltage will be at or near zero and the frequency wi...

Страница 30: ...y 425 V peak at their output DEATH on contact may result if the output terminals or circuits connected to the output are touched when power is applied The output checkout test requires that you connec...

Страница 31: ...n Repeat steps 3 and 4 for phase 2 and phase 3 of three phase sources All three light bulbs should be lit when this action is complete 5 Press Voltage VOLT 120 6 Press Phase Select VOLT 120 Select unt...

Страница 32: ...t is in current limit mode and the light bulbs are dimmer because the output voltage has dropped in its attempt to limit output current 16 Press Protect scroll to the CURR PROT item and press to selec...

Страница 33: ...iled Error 6 Non volatile RAM LIST section checksum failed Error 10 RAM selftest Error 11 to 18 DAC selftest 1 to 8 Table 10 Power on selftest Error codes 3 4 4 Runtime Error Messages Under unusual op...

Страница 34: ...s 4 If any fuses are defective replace all three with fuses of the same type see section 1 6 5 Turn on the AC source and check the operation If it is normal replace the fuse cover Note It is recommend...

Страница 35: ...quency how to measure the output how to program output pulses and lists how to trigger output changes 4 2 Front Panel Description Figure 11 Front Panel Overall View Display 14 character vacuum fluores...

Страница 36: ...se generators let you set the output voltage and frequency when the AC source is in local mode Their response is rate sensitive Turning a control rapidly provides coarse control of the value Turning a...

Страница 37: ...iL Series User Manual California Instruments Rev B 27...

Страница 38: ...t to scroll through the following command list Use and to scroll through the parameter list Display Command Function ADDRESS value Set IEEE 488 address INTF char Select interface GPIB or RS232 BAUDRA...

Страница 39: ...it When off the AC source output is disabled and the Dis annunciator is on Shift Trigger Sends an immediate trigger to the AC source Phase Select This key selects the phase to which function commands...

Страница 40: ...hase 3 selected phases coupled NONE Table 14 Phase selection display annunciators 1 Does not apply to Meter or Harmonic functions When the Meter and Harmonic functions are active Phase Select only rot...

Страница 41: ...eter lists are circular you can return to the starting position by continuously pressing either key If the command has a numeric range these keys increment or decrement the existing value 4 4 3 Meter...

Страница 42: ...current harmonic magnitude reading N PHASE index neutral current harmonic phase reading CURR THD current total harmonic distortion reading VOLT THD voltage total harmonic distortion Table 16 Harmonic...

Страница 43: ...list Display Command Function Phase selectable CURR LEV value Set immediate rms output current limit yes Table 18 Current limit display readouts Freq Press this key to access the frequency menu list D...

Страница 44: ...hapes will also appear in this list when created yes SHAPE M char Select the shape mode FIXED STEP PULSE or LIST no CLIP value Set the clipping level of the CSIN wave shape This specifies the point wh...

Страница 45: ...ent of output impedance to value between 0 and 1 ohm 4801iL only IMP REAC value Set the reactive inductive component of output impedance to value between 0 00002 and 0 001 Henries 4801iL only PON STAT...

Страница 46: ...in the following list commands ending in clear the registers when they are read For this reason the registers are read only after you press Enter not when you scroll to the command Display Command Fun...

Страница 47: ...ndex value List of output frequency slew rates no PHASE index value List of output voltage phase angles yes SHAP index char List of output waveform shapes SINE SQUARE or CSIN CSIN clipped sine wave Us...

Страница 48: ...point For example to enter 33 6 press 3 3 6 The backspace key deletes the last digit entered from the keypad This key lets you correct one or more wrong digits before they are entered Enter This key e...

Страница 49: ...Generating step pulse and list transients Programming trigger delays and phase synchronization Programming slew rates Saving and recalling operating states Setting the IEEE 488 address or RS 232C par...

Страница 50: ...s phase 2 to 180 Vrms and phase 3 to 235 Vrms Step Action Display 1 On the Function keypad press Voltage Note that in the power on default state the 1 2 and 3 annunciators are all lit indicating that...

Страница 51: ...Step Action Display 1 On the Function keypad press Freq FREQ 60 2 You can set the frequency in either of two ways On the Entry keypad press 5 0 Enter FREQ 50 Rotate the panel Frequency knob to obtain...

Страница 52: ...to sequence through a number of values as determined by points entered in the List menu FIXED disables transient operation for the selected function 4 6 5 Step Transient The Voltage Menu lets you spec...

Страница 53: ...example the output is programmed to generate four 5 5 millisecond 120 Vrms pulses at 60 Hz Figure 14 shows the trigger pulse count pulse period and duty cycle Figure 14 Pulse Transients From the Outpu...

Страница 54: ...d in example 1 for setting the immediate output voltage 4 6 7 List Transient Lists are the most flexible means of generating multiple or synchronized transient outputs The following figure shows a vol...

Страница 55: ...until you access the voltage list This specifies the amplitude of each output point during its corresponding dwell period The first voltage list point 0 appears in the display From the Entry keypad e...

Страница 56: ...the specified phase angle after the trigger signal is received Example describes phase synchronization on three phase sources Note that phase synchronization is referenced to an internal phase signal...

Страница 57: ...mediate and triggered voltage levels followed by the voltage transient mode VOLT 120 VOLT T 150 VOLT M STEP 2 Press Trigger Control Press t until you access the delay parameter If necessary set it to...

Страница 58: ...Press Trigger Control and t to access the sync source command On the Entry keypad press once to obtain PHASE Press Enter SYNC SOUR PHASE 4 Access the Trigger Control menu again and press t to access t...

Страница 59: ...n example a triggered slew rate of 50 volts second steps the voltage level to its new value 50 volts second becomes the new immediate slew rate in step mode In example a triggered slew rate of 50 volt...

Страница 60: ...the triggered slew command On the Entry keypad enter a value such as 5 0 Enter which sets the triggered slew rate to 50 volts second SLEW T 50 4 Then press Trigger Control Enter followed by Shift Tri...

Страница 61: ...t filter capacitors to discharge completely This example shows you how you can measure the peak inrush current using the front panel meter The voltage is set to 120 V rms and the output is triggered a...

Страница 62: ...PK NR 11 Enable the output by pressing Output On Off 0 V 60 HZ 12 Send the trigger to step the output from 0 V to 120 V Press Shift Trigger Control The inrush current is displayed on the Meter 48 A PK...

Страница 63: ...d as follows Step Action Display 1 Set the instrument to the operating state that you want to save 2 Save this state to location 1 by pressing SAVE 1 and ENTER SAV 1 To recall a saved state proceed as...

Страница 64: ...low range 120 A 40 A 120 A 40 A 96 A high range 60 A 20 A 60 A 20 A 48 A Crest Factor Current 6 0 4 0 3 0 Output Frequency Range 45 Hz 5 kHz 45 Hz 1 kHz Constant Voltage Ripple and Noise 60 dB 20 kHz...

Страница 65: ...t 0 4 and 796 H Synchronization 1 ppm Current shunt burden 0 Volts Current harmonic smoothing filter 1 5 sec Pst Integration time 1 5 10 or 15 min Sample rate Window width Acq overlap 50 Hz Operation...

Страница 66: ...0 1 08 X 106 s 0 4 30 X 105 s Triggering Accuracy With Respect to Phase Synchronization 250 s 100 s Trigger In Response Time 400 s 200 s Minimum Resolution for Dropout 500 s Output Response Time outp...

Страница 67: ...TE6 RS 232C Interface Capabilities Baud rates 300 600 1200 2400 4800 9600 Data formats 7 bits even or odd parity 8 bits without parity Language SCPI Standard Commands for Programmable Instruments Regu...

Страница 68: ...ired Description Digital Voltmeter Resolution 10 nV 1 V Readout 8 5 digits Accuracy 20 ppm Example HP 3458A Current Monitor The 4 terminal current shunt is used to eliminate output current measurement...

Страница 69: ...6 2 Operation Verification Perform the following tests for operation verification in the order indicated 1 Turn On Checkout 2 Voltage Programming and Readback Accuracy 3 Current Readback Accuracy 6 2...

Страница 70: ...programming readback test steps 6 2 3 Current Programming and Readback Accuracy This test verifies the current programming and readback Connect the appropriate current monitoring resistor see Table 38...

Страница 71: ...tor resistor Record the result as the High Current value in Table 41 Value within high current limits specified in Table 41 10 Record the front panel display readback Value within readback limits spec...

Страница 72: ...ng and Readback Low Current 5 A Iout 4 95 A A 5 05 A Front Panel Display Readback Iout 30 mA A Iout 30 mA High Current 10 A Iout 9 93 A A 10 07 A Front Panel Display Readback Iout 35 mA mA Iout 35 mA...

Страница 73: ...to next step in sequence P1 P2 P3 or P4 CAL DATA value input a calibration measurement CAL VOLT AC begin AC voltage calibration sequence CAL VOLT PROT begin voltage protection calibration CAL CURR AC...

Страница 74: ...directly to the AC source via the ratio transformer shown in Figure 19 Do not connect the load resistor or current shunt 6 Press Shift Calibration scroll to the CAL VOLT AC command and press Enter CAL...

Страница 75: ...brating and Entering Current Calibration Values 19 Connect the appropriate current shunt and load resistor as shown in Figure 19 Connect the DVM ac rms mode across the current shunt If you are calibra...

Страница 76: ...for DVM reading to stabilize Then read DVM and compute the second current value DVM reading shunt resistance Use the Entry keypad to enter the second current value CAL DATA 0 00 Calibrating the Outpu...

Страница 77: ...password to 0 zero 6 4 4 Calibration Error Messages Errors that can occur during calibration are shown in the following table Error no Error Meaning 401 CAL switch prevents calibration 1 402 CAL pass...

Страница 78: ...calibration functions are accessible after entering a numeric password The default password is 0 and is changeable by the user Clear Password The calibration password is reset to 0 and the remote prog...

Страница 79: ...by ESD electrostatic discharge Failure to observe standard antistatic practices can result in serious degradation of performance even when an actual failure does not occur When working on the AC Powe...

Страница 80: ...SP board To re initialize unit turn CAL ON then press 0 and 9 simultaneously Press scroll key to model number then press enter When unit is re initialized all CAL data user defined WAVEFORM data and L...

Страница 81: ...lize the unit perform the following Turn the unit on then do the front panel CAL ON command Press 0 and 9 keys simultaneously EEINIT model should now be displayed Scroll to the correct model number an...

Страница 82: ...lose Are fans running If not Check C1 for 300 VDC 300 VDC is initially supplied via 3 relays fuses and resistors at bottom of A9 board 6 Bias voltages are supplied from the A10 Auxiliary power supply...

Страница 83: ...5 16 21 22 25 26 10 Are all phases missing If Yes Check 300 VDC rail from CR1 C1 to F1 F2 and F3 on A4 mother board Check for sine wave at A6J4 1 to A6J4 2 A6J4 3 to A6J4 4 A6J4 5 to A6J4 6 Table 46 A...

Страница 84: ...iL Series User Manual 74 Rev B California Instruments Figure 21 Troubleshooting Diagram for No Output Present...

Страница 85: ...iL Series User Manual California Instruments Rev B 75 Figure 22 Troubleshooting Diagram for One or More Outputs Missing...

Страница 86: ...ase input is connected to the power rectifier CR1 L1 and C1 to create 300 VDC required by the power amplifiers A1 A2 and A3 The amplifier assemblies together with the output filter and range relays pr...

Страница 87: ...t current setting The A8 board also contains all the logic circuits for generating arbitrary waveforms frequency changes and phase control At power on the DSP board performs a self test and reports fa...

Страница 88: ...the A4 mother board via J2 the 15 V and 5 VSEC go to the A6 servo board via J4 and 5 VSEC goes to the A8 DSP board via J5 The A10 supply also supplies the 12 VDC to 24 VDC for the fan speed control A...

Страница 89: ...iL Series User Manual California Instruments Rev B 79 Figure 23 AC Power Source Block Diagram...

Страница 90: ...8 250650 Controller DSP Assembly 4801iL A9 5001 702 1 Input PS Assembly 208 volt A9 5001 706 1 Input PS Assembly 400 volt A10 5001 703 1 Auxiliary Power Supply Assembly A11 250571 Display Assembly A12...

Страница 91: ...226 1 AC input safety cover strain relief 211112 AC input safety cover bushing 211114 Screw 4 ac input safety cover 6 32 x 1 5 in FS1144 Ac output safety cover 250576 Screw 2 ac output safety cover 6...

Страница 92: ...is chapter contains drawings and diagrams for troubleshooting and maintaining the California Instruments iL family of AC power sources Unless otherwise specified in the drawings a drawing or diagram a...

Страница 93: ...iL Series User Manual California Instruments Rev B 83 Figure 25 AC Input Board Parts Location...

Страница 94: ...iL Series User Manual 84 Rev B California Instruments Figure 26 Mother Board Parts Location...

Страница 95: ...wn below list all ESR error messages generated by the AC source Messages in the table are grouped by Code Error type Error Error String 100 Command error generic 101 Invalid character 102 Syntax error...

Страница 96: ...eived 430 Query DEADLOCKED too many queries in command string 440 Query UNTERMINATED after indefinite response 0 No error 1 Non volatile RAM RDO section checksum failed 2 Non volatile RAM CONFIG secti...

Страница 97: ...passcode is incorrect 403 CAL not enabled 404 Computed readback cal constants are incorrect 405 Computed programming cal constants are incorrect 406 Incorrect sequence of calibration commands 600 Syst...

Страница 98: ...8 15 INH RI 14 input 10 output 11 RS 232 16 sense 13 trigger 14 controls front panel 3 Current key 35 CV 27 D DFI 14 diagrams 86 dimensions 9 Dis 27 E Enter 20 Enter key 42 entry keys 28 Err 27 Error...

Страница 99: ...utions safety iv principles of operation 80 amplifier modules 80 auxiliary power supply 82 bias power supply 82 BNC assembly 82 display assembly 82 DSP assembly 81 input power supply assembly 81 82 is...

Страница 100: ...iL Series User Manual California Instruments Rev B 91 trigger system 49 troubleshooting 73 U Unr 27 V Voltage key 34 W wire table 12...

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