California Instruments 2750L-P Series Instruction Manual
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California Instruments 2750L-P Series Instruction Manual

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Revision K
August 2001
Copyright © 1995 -2001
By California Instruments
All rights reserved
P/N 4009-316
INSTRUCTION MANUAL
2750L-P/ 4500L-P / 6000L-P

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Summary of Contents for California Instruments 2750L-P Series

  • Page 1 Revision K August 2001 Copyright © 1995 -2001 By California Instruments All rights reserved P/N 4009-316 INSTRUCTION MANUAL 2750L-P/ 4500L-P / 6000L-P...

  • Page 2: Table Of Contents

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K TABLE OF CONTENTS SECTION 1 INTRODUCTION AND SPECIFICATIONS ---------------------------------------------------------------------- 1 INTRODUCTION -------------------------------------------------------------------------------------------------------------- 1 GENERAL DESCRIPTION ------------------------------------------------------------------------------------------------- 1 ACCESSORY EQUIPMENT/RACK SLIDES --------------------------------------------------------------------------- 3 SPECIFICATIONS------------------------------------------------------------------------------------------------------------ 3 SECTION 2 INSTALLATION AND ACCEPTANCE ------------------------------------------------------------------------- 13 UNPACKING ----------------------------------------------------------------------------------------------------------------- 13 POWER REQUIREMENTS----------------------------------------------------------------------------------------------- 13 MECHANICAL INSTALLATION ----------------------------------------------------------------------------------------- 13 INPUT WIRING-------------------------------------------------------------------------------------------------------------- 13...
  • Page 3 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K NO OUTPUT ----------------------------------------------------------------------------------------------------------------113 MODULE REMOVAL------------------------------------------------------------------------------------------------------113 6.10 OSCILLATOR MODULE REMOVAL/REPLACEMENT-----------------------------------------------------------113 6.11 AMPLIFIER REMOVAL/REPLACEMENT ---------------------------------------------------------------------------114 SECTION 7 REPLACEABLE PARTS------------------------------------------------------------------------------------------117 GENERAL -------------------------------------------------------------------------------------------------------------------117 ORDERING INFORMATION --------------------------------------------------------------------------------------------117 SECTION 8 MIL-STD-704D-------------------------------------------------------------------------------------------------------119 GENERAL -------------------------------------------------------------------------------------------------------------------119 INITIAL SETUP-------------------------------------------------------------------------------------------------------------119 TEST PERFORMED ------------------------------------------------------------------------------------------------------119 KEYPAD ENTRY (Refer to page 31 for Keyboard flow chart) -------------------------------------------------120 GPIB OPERATION (Refer to page 150 for syntax diagram) ---------------------------------------------------122 TEST SPECIFICATION --------------------------------------------------------------------------------------------------122 SECTION 9...
  • Page 4 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 4500L-P / 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...

  • Page 5: Introduction And Specifications

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 1 INTRODUCTION AND SPECIFICATIONS 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. 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.

  • Page 6: Model 4500L / 2750L / 6000L-P Output Drawings

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 1-1 MODEL 4500L / 2750L / 6000L-P OUTPUT DRAWINGS...

  • Page 7: Accessory Equipment/Rack Slides

    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...

  • Page 8: Table 1-2 Specifications 4500L-P / 2750L-P / 6000L-P

    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 CURRENT PER PHASE (At full output voltage) VOLTAGE RANGE MODEL...
  • Page 9 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:...
  • Page 10 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.
  • Page 11 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 252V UP Option: 342 to 456V three-phase Current (PF=.6, EFF=75%, V line=minimum, 3P, full load): 31 Amps 2750L-3P:...
  • Page 12 Numeric Representation: NR1, NR2 or NR3 Header: HR1 or HR2 (upper or lower case) Message Separators: SR1 Data transfer rate: 200K bytes per second Language: A California Instruments language which is upward compatible from other C.I. products Functions Range Resolution...
  • Page 13 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K CURRENT LIMIT RANGE VOLTAGE RANGE(1) RESOLUTION DEFAULT MODEL (on 135 Range) 2750L-3P 0 to 7.40, 3.70 0.01 7.40 2750L-1P 0 to 22.22, 11.11 0.01 22.22 4500L-3P 0 to 12.34, 6.17 0.01 12.34 4500L-1P 0 to 37.04, 18.52 0.01...
  • Page 14 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K phase of this input. Loss of this input will cause the output to default. Indicators: 32 character LCD display, Output Overload, Over temperature Power On, High Voltage Range. Dimensions: 10.5 inches (26.7 cm) high, 23 inches (58.4 cm) deep and 19 inches (48.3 cm) wide. Weight lbs (Kg): 175 (79.2) Material:...
  • Page 15 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 Voltage 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%):...
  • Page 16 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Frequency: 360 to 440 Hz (Tracks the main outputs) Phase: Tracks the phase A output with Phase D Distortion: 1% THD maximum with linear load Line Regulation: ±0.1% for 10% line change Load Regulation: ±10% from no-load to full-load MATE (MT option) CIIL language...

  • Page 17: Installation And Acceptance

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 2 INSTALLATION AND ACCEPTANCE 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.

  • Page 18: Figure 2-1 6000L / 2750L And 4500L-3P Rear Panel Connections

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 2-1 6000L / 2750L and 4500L-3P REAR PANEL CONNECTIONS -14-...

  • Page 19: System Interconnect

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 2-2 SYSTEM INTERCONNECT 6000L-3, 12000L/2-3, 4500L-3, 18000L/4-3...

  • Page 20: System Interconnect For Mode Option

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 2-2 SYSTEM INTERCONNECT FOR MODE OPTION 6000L-3, 12000L/2-3, 4500L-3, 9000l/2-3, 13500l/3-3, 18000L/4-3 18000l/3-3 -16-...

  • Page 21: System Interconnect

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 2-2 SYSTEM INTERCONNECT FOR ALL 1-PHASE SYSTEMS -17-...

  • Page 22: System Interconnect

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 2-2 SYSTEM INTERCONNECT 18000L/3-3, 13500L/3-3, 27000L/6-3 -18-...
  • Page 23 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.

  • Page 24: Output Connections

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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.

  • Page 25: Rear Panel Dip Switch (Sw1)

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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 Verify the HIGH RANGE lamp is lit.
  • Page 26 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K All chassis in systems with Single Phase output. Both chassis in a 9000L/2-3 or 12000L/2-3 system. For multiple-chassis power systems, with a multi-phase output (9000L/2-2, 13500L/3-3, 27000L/6-3, and 40500L/9-3) the DIP switches should be set to the following positions: DIP SWITCH PHASE A MASTER AND SLAVE PHASE B...

  • Page 27: Function Test Setup

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 2-3 FUNCTION TEST SETUP -23-...

  • Page 28: Operation

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 3 OPERATION GENERAL The AC Power System may be programmed 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.

  • Page 29: Front Panel Controls And Indicators

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 3-1 FRONT PANEL CONTROLS AND INDICATORS -25-...

  • Page 30: Rear Panel Connections

    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. It also shows all error messages and measured values.

  • Page 31: Rear Panel Connections - 6000L/2750L/4500L

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 3-2 REAR PANEL CONNECTIONS - 6000L/2750L/4500L -27-...

  • Page 32: Table 3-3 System Interface Connector (J7)

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 3.4.4 IEEE-488 CONNECTOR J5 is the 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. Description ____________________________________________________________ Analog Common...
  • Page 33 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K J7-1 ANALOG COMMON: This is the common for all analog signals on the connector. J7-2 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.
  • Page 34 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.

  • Page 35: Front Panel Programming

    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. Figure 3-3 FUNCTION STROBE CONNECTIONS FRONT PANEL PROGRAMMING...

  • Page 36: Keypad Key Description

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K DESCRIPTION SNW/0 Inputs the value "0" for all output parameters or to select screen "0" when followed by the ENT key. Also used to select the sine wave waveform. SQW/1 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.

  • Page 37: Output Parameter Screen

    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.

  • Page 38: Measurement Screens

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K The following are for measured values. SCREEN EXTENSIONS ARGUMENT ACTION TAKEN NAME H, M, S Hrs,Min,Sec Reports the total accumulated run time up to 9,999 hours. A, B, C 0-400.0 Measures the TRMS output voltage. A, B, C 0.0-200.0 Measures the TRMS output current in Amps.

  • Page 39: Configuration Screens

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SCREEN EXTENSIONS ARGUMENT ACTION TAKEN NAME A(LSN) 0-30 Sets the IEEE-488 (GPIB) Listen Address Defines the features enabled for Power Source B(CFG) compatibility. Defines the phase C initial value for power C(PHZ) *120 system configuration.
  • Page 40 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K The display now shows the AMP parameter screen: AMP MON A 0.0 C 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.
  • Page 41 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K the following sequence: Select the SNC screen: 1 ENT 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: PRG ENT...
  • Page 42 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.
  • Page 43 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 5 ENT 0 PRG Select the RMP screen. Set a delay of .002 seconds and a return value of 115 volts: ENT A 0.002 PRG C 115 PRG Execute the program by depressing the ENT key. Two output parameters may be ramped simultaneously.
  • Page 44 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.
  • Page 45 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...
  • Page 46 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Select the FRQ screen and program 60 Hz: Select the AMP screen and program 115 volts: Select the RMP screen and program DLY = 0.01, STP = 0.1 and VAL = 135: 0.01 PRG C Link this program to Register 2: Store this program in Register 1:...
  • Page 47 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Select the FRQ screen and specify the starting frequency of 360 Hz. 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: 0.2 PRG C 440 PRG Select the RMP B screen and specify the ramp parameter of the dependent parameter, AMP, of STP = .5 volts:...

  • Page 48: Front Panel Display Error Messages

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K ERROR MESSAGE CAUSE CRL FAULT Indicate output current exceeds program current. AMP (1) FAULT Incorrect sense line connection. Overload on indicated output. TEMP (1) FAULT Amplifier overtemperature CPU MEMORY FAULT CPU failed self-test DMA OVERFLOW Remote message greater than 256 bytes.
  • Page 49 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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: next enter the default frequency followed by depressing the PRG and ENT key.

  • Page 50: To Measure The Output

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Select the MOD screen: Program the 3-phase mode: The last mode programmed for the power system will be 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: 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.

  • Page 51: Remote Programming With Abbreviated Plain English (Ape)

    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.
  • Page 52 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.

  • Page 53: Table 3-10 Commonly Used Gpib Abbreviations

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 3-10 COMMONLY USED GPIB ABBREVIATIONS ABBREVIATION 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.

  • Page 54: Unit Address Group

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 3-11 UNIT ADDRESS GROUP BINARY ADDRESS DECIMAL ASCII " & < > -50-...
  • Page 55 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: HHHDXXX---------------E±NND where Three letter mnemonic for each message header. Optional header extension (A, B or C) to specify output (ref. Table 3-5 through 3-8) Alpha, numeric or # for message header argument.

  • Page 56: Remote Commend Sequences

    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 TO PROGRAM OUTPUT PARAMETERS: -(n)
  • Page 57 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K TO CALIBRATE OUTPUT: CAL -- ------- - (n) DLY – (n) STP – (n) VAL - -(n) --- * -------------------------------------------------- * TO CALIBRATE MEASUREMENT: - (n) ------------------ * TO REQUEST TALKING A PROGRAMMED PARAMETER OR MEASURED VALUE: ------------------ * TO RECALL A REGISTER: REC –...

  • Page 58: Program Headers

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 3-12 PROGRAM HEADERS HEADER EXTENSION ARGUMENT DEFINITION A, B, C # or numeric from 0.0 to RNG value Amplitude in volts. A, B, C 0 to 255 Calibrate the output voltage CAL VLT A, B, C Actual voltage Calibrated measured voltage at external...
  • Page 59 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K HEADER EXTENSION ARGUMENT DEFINITION of the output voltage Used with TLK to request total accumulated runtime. A, B, C Used with TLK to request measurement of the output load current. 1 or 3 Program the output phase configuration A, B, C Used with TLK to request measurement...
  • Page 60 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 PHZ C 119.3 The PHZA value can be used to control the point of the phase A waveform where the change will occur.
  • Page 61 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.
  • Page 62 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 STP.5 A GPIB Service Request will be generated at the end of a ramp if SRQ2 is included in the setup string.
  • Page 63 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.
  • Page 64 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...
  • Page 65 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)

  • Page 66: Tlk Arguments

    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.
  • Page 67 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K ARGUMENT EXTENSION DATA DEFINITION REPORTED None 45.00 to 5000 Measured output frequency None 45.00 to 5000 Programmed frequency 0000 to 005.0 Default voltage O to CRL Default current limit None INT or EXT Programmed external sync mode A, B, C INT or EXT...

  • Page 68: Example Talk Response (3-Phase System)

    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 ALMA0000 B135.0 C270.0 AMPA000.0 B000.0 C000.0 APWA1003 B0985 C1507 CFGA0001 B0028 C0120 CLMA11.12 B0002 C0000 CRLA11.12 B11.12 C11.12 CURA06.14 B05.12 C06.71...
  • Page 69 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 TLK with an A, B or C 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.
  • Page 70 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.

  • Page 71: Remote Operation With Mate Ciil

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 3-15 STATUS BYTE VALUES 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...
  • Page 72 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, NOUN: NOUN MODIFIERS: VOLT, FREQ, PANG, CURL, SYNI, POWR, APOW, CURR, TRSC CHANNEL DESIGNATORS :CH00, :CH01, :CH02, :CH03 The only noun recognized by the power source is ACS for AC Signal.

  • Page 73: Ciil Program Syntax

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K STIMULUS STRING ___________________________________________ FNC-------->---------ACS----->--------->:CH00---->------------>SET--->-------------->VOLT---->--------------<value>-<CR><LF> ->:CH01-> ->SRX-> ->FREQ-> ->:CH02-> ->SRN-> ->PANG-> ->:CH03-> ->CURL-> ->SYNI-> *NOTE: There is no value for SET SYNI RST----------------->ACS-------->----------------->:CH00->-----------<CR><LF> ->:CH01-> ->:CH02-> ->:CH03-> ------->-------------->CLS->_______________>:CH00->-----------<CR><LF> ->OPN-> ->:CH01-> ->:CH02-> ->:CH03-> ______________________________________________________________________________________________ GENERAL CIIL STRINGS ------>---------------->GAL----->------------><CR><LF>...
  • Page 74 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; :CH00 Designates all outputs.

  • Page 75: Channel Designators And Noun Modifiers

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 3-16 CHANNEL DESIGNATORS AND NOUN MODIFIERS CHANNEL DESIGNATOR MODIFIER FUNCTION :CH00 VOLT Simultaneously set amplitude for Phase A, Phase B and Phase C :CH01 VOLT Set Phase A Amplitude :CH02 VOLT Set Phase B Amplitude :CHO3 VOLT Set Phase C Amplitude...
  • Page 76 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 a valid channel designator. (:CH00, :CH01, :CH02 or :CH03), but all channels close simultaneously for any valid designator.
  • Page 77 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 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>...

  • Page 78: Confidence Test Flow Diagram

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 3-7 CONFIDENCE TEST FLOW DIAGRAM Refer to Figures 5-1 & 5-6 and Top Assembly Parts List 4009-422 For Reference Designators -74-...
  • Page 79 INSTRUCTIO NAL MANUAL 2750L-P/4500L-P/6000L-P August, 200 Rev. K 3.8.3.8 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 :CH01 <CR>...

  • Page 80: Non-Cnf Status Messages

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 3-17 NON-CNF STATUS MESSAGES CONDITION DEVICE RESPONSE Loaded output F07ACS01 <SP> (DEV): <SP>OUTPUT Fault CH01/02/03 VOLT FAULT <CR><LF> Source Temperature Fault F07ACS01 <SP> (DEV): <SP> SOURCE CH01/02/03 TEMPERATURE <CR><LF> Program out of range for VOLT, F07ACS01 <SP>...
  • Page 81 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 <CR><LF> Followed by string: FTH FREQ <CR>...
  • Page 82 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 :CH00 SET SYNI <CR>...
  • Page 83 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K <SP> 65.5 <CR> <LF> 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>.

  • Page 84: Discrete Fault Interrupt Conditions

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K The status contained in "message" 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: F07ACS01<SP>(DEV): <SP>...

  • Page 85: Sample Programming Strings

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 3.8.8 PROGRAM EXAMPLES Table 3-19 lists some typical CIIL 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.

  • Page 86: Calibration Procedure

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 4 CALIBRATION PROCEDURE GENERAL The calibration is divided into two categories; 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.

  • Page 87: Test Equipment

    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 in the phase B or C output phase angle relative to phase A. 4.4.7 OUTPUT PHASE ANGLE CALIBRATION ----------------------------------------------------- 103 TEST EQUIPMENT...

  • Page 88: Internal Adjustments And Jumper Locations

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 4-1 INTERNAL ADJUSTMENTS AND JUMPER LOCATIONS Internal Adjustments and Jumper Locations -84-...
  • Page 89 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.

  • Page 90: Table 4-1 Setup Load Values

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K MODEL 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 15000 30000 135/270 LOAD RES 10.9 5.46 3.64 1.82 1.21 0.607 RANGE "...

  • Page 91: Setup Load Values (Continued)

    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 18000 135/270 LOAD RES. 18.2 6.07 9.11 4.55 3.03 1.01 RANGE "...

  • Page 92: Periodic Calibration

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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 steps: Connect the AC voltmeter to the phase to be calibrated.
  • Page 93 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Depress the MNU key several times until the configuration menu screen is displayed. CFG = 16 ALM = 17 FLM = 18 CLM = 19 Enter the key sequence 13 ENT to access the CAL VLT screen. 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.

  • Page 94: Figure 4-2 Equipment Hookup For Periodic Calibration

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 4-2 EQUIPMENT HOOKUP FOR PERIODIC CALIBRATION -90-...
  • Page 95 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 4.3.3 CURRENT MEASUREMENT CALIBRATION For calibration of current measurement perform the following steps: 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) may be displayed by repeatedly depressing either the MON or PRG keys and then skip to step 6.
  • Page 96 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 *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...
  • Page 97 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.

  • Page 98: Figure 4-3 Flow Diagram A Remote Calibration

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 4-3 FLOW DIAGRAM A REMOTE CALIBRATION -94-...

  • Page 99: Flow Chart (Continued)

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 4-3 FLOW CHART (continued) -95-...

  • Page 100: Nonperiodic Calibration

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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.
  • Page 101 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.
  • Page 102 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K ADJUSTMENT TEST POINTS (TP1 is Gnd.) OUTPUT (Range Relay Assy) (Current Limit Assy) TP10 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...

  • Page 103: Amplifier Load Balance Adjustments

    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 ADJUST FOR: (±0.1V) (Current Limit Board) IF NEEDED 2750L-1 MASTER TP10 None Monitor voltage for reference 4500L-1 6000L-1 " " R1 AMP B Same voltage as TP10 "...
  • Page 104 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SYSTEM LOAD SOURCE TEST POINT ADJUSTMENT ADJUST FOR: (±0.1V) (Current Limit Board) IF NEEDED " " R1 AMP B Same voltage as MASTER TP10 " " R1 AMP C " " " SLAVE #1 TP10 R1 AMP A "...
  • Page 105 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.

  • Page 106: Current Limit Adjustment

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 4-3 CURRENT LIMIT ADJUSTMENT SYSTEM ADJUSTMENT POWER SOURCE PHASE LOADED 4500L-3,2750L-3, MASTER 6000L-3 " " 2750L-1,4500L-1,6000L-1 MASTER & SLAVES 9000L/2-1,12000L/2-1,13500L/3-1, " " 18000L/3-1, 27000L/6-1 " " 9000L/2-3, 12000l\2-3 MASTER & SLAVES " " "...
  • Page 107 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.
  • Page 108 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K (This page left intentionally blank) -104-...

  • Page 109: Theory Of Operation

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 5 THEORY OF OPERATION 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. OVERALL DESCRIPTION Input power from the rear panel is routed through the circuit breaker to the Input Power Supply (A5).

  • Page 110: Figure 5-1 Ac Power System Block Diagram

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 5-1 AC POWER SYSTEM BLOCK DIAGRAM -106-...

  • Page 111: Auxiliary Power Supply

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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, +15VSW1 is also generated.

  • Page 112: Oscillator Module

    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 aso / A SIG,o / B SIG ando / C SIG. A 5.00 VRMS input signal will generate a full scale output voltage at the output of the AC Power System and 100.0 VRMS on the primary of the output transformer.

  • Page 113: Phase A/Ref Board

    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.
  • Page 114 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K This page left intentionally blank -110-...

  • Page 115: Maintenance And Troubleshooting

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 6 MAINTENANCE AND TROUBLESHOOTING 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.

  • Page 116: Overload Lamp On

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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 Load Balance will cause the OVERLOAD Lamp to illuminate.

  • Page 117: Output

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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. NO OUTPUT If the AC Power System has no output at the rear panel terminal block, TB1, the following items may be at fault: If the External Sense lines are not connected correctly, there will be no output.

  • Page 118: Amplifier Removal/Replacement

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 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.

  • Page 119: Figure 6-1 Module Location

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 6-1 MODULE LOCATION -115-...
  • Page 120 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K [This page left intentionally blank] -116-...

  • Page 121: Replaceable Parts

    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. ORDERING INFORMATION In order to ensure prompt, accurate service, please provide the following information, when applicable, for each replacement part ordered.
  • Page 122 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 4009-456-2...

  • Page 123: Mil-Std-704D

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 8 MIL-STD-704D GENERAL The 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.

  • Page 124: Keypad Entry (Refer To Page 31 For Keyboard Flow Chart)

    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 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...
  • Page 125 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...

  • Page 126: Gpib Operation (Refer To Page 150 For Syntax Diagram)

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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 MIL704D[A][B][C] :STEady state MIL704D[A][B][C] :STEady state :VOLTage MIL704D[A][B][C] :STEady state :VOLTage :UNBalance MIL704D[A][B][C] :STEady state :PHASe :DIFFerence MIL704D[A][B][C] :STEady state :WAVeform :DISTortion...
  • Page 127 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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.
  • Page 128 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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...
  • Page 129 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Abnormal voltage test MIL704D[A][B][C] :ABNormal :VOLTage This test will combine Abnormal overvoltage and Abnormal 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.
  • Page 130 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K MIL704D[A][B][C] :EMERgency This test will combine the voltage emergency test and the frequency emergency test. A pause of 5 seconds between tests is asserted. 8.6.5 MIL704D TEST MIL704D[A][B][C] This test will combine all the tests listed above in one test in the sequence listed. A 5 second time delay separate the parts of the test.
  • Page 131 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 704D FLOW CHART EXIT MIL704D:SelA,B,C ENT=all CLR-EXIT A,B,C TEST A, B, C ? CLR TO RESELECT APPLY NORM OUTPUT PRESS ENT PRESS MNU TO SELECT TEST 1=STEADY St MENU 2=TRANSIENT MENU 3=ABNORMAL MENU 4=EMERGENCY MENU Return 5=ALL MIL704 TEST...
  • Page 132 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 704D SYNTAX FLOW MIL704D[A][B][C] :STEady state :ABNormal :VOLTage :VOLTage :VOLTage :UNBalance :VOLTage :OVER :PHASe :DIFFerence :VOLTage :UNDER :WAVeform :DISTortion :FREQuency :FREQuency :FREQuency :OVER :FREQuency :UNDER :TRANsient :EMERgency :VOLTage :VOLTage :VOLTage :HIGH :FREQuency :VOLTage :LOW :FREQuency :FREQuency :HIGH...
  • Page 133 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 1 STEADY STATE VOLTAGE -129-...
  • Page 134 INSTRUCTIONAL MANUAL INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P 2750L-P/4500L-P/6000L-P August, 2001 August, 2001 Rev. K Rev. K Figure 6, 7 Figure 6, 7 VOLTAGE TRANSIENT VOLTAGE TRANSIENT -130- -130-...
  • Page 135 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 8, 9 FREQUENCY TRANSIENT -131-...
  • Page 136 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 10, 11 ABNORMAL OPERATION -132-...
  • Page 137 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 12, 13 ABNORMAL FREQUENCY -133-...
  • Page 138 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 14 EMERGENCY VOLTAGE -134-...

  • Page 139: 2-Phase Option (2P)

    INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K SECTION 9 2-PHASE OPTION (2P) 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-...
  • Page 140 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K (This page left intentionally blank) -136-...

  • Page 141: Rtca

    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...
  • Page 142 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K 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.

  • Page 143: Gpib Operation

    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 Menu, the following Menu will appear: 1 = Emg Vunder Test 2 = Emg Vover Test 3 = Return If Key 1 is selected "Volt Menu"...

  • Page 144: Test Specification

    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.
  • Page 145 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 DO160[A][B][C] :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.
  • Page 146 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 :VOLTage :UNDer This test will drop the output voltage from 115 volts to 60 volts for 7 seconds. 10.6.3.4 ABNORMAL STATE VOLTAGE SURGE DO160[A][B][C] :ABNormal state :VOLTage :OVER This test requires an output voltage range of 180 volts.
  • Page 147 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Figure 1 EXIT DO160:SEL A,B,C ENT=ALL CLR-EXIT A,B,C TEST A, B, C CLR TO RESELECT APPLY NORM OUTPUT PRESS ENT PRESS MNU TO SELECT TEST 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...
  • Page 148 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K FIGURE 2 -144-...
  • Page 149 INSTRUCTIONAL MANUAL INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P 2750L-P/4500L-P/6000L-P August, 2001 August, 2001 Rev. K Rev. K FIGURE 3 -145- -145-...
  • Page 150 INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P August, 2001 Rev. K Table 1 NOTES: Definitions T1 - Power Interrupt time. T2 - Time it would take for the applied voltage to decay from V (nom) to zero volts > T3 – Time it would take for the applied voltage to rise from zero to V (nom) volts. V MIN –...

  • Page 151: Limited Warranty

    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, defects, malfunctions, or service failures caused by owner’s failure to follow California Instruments’...

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