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Guildline 6623A-1000 Operation Manual

High current range extenders
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Operation Manual
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6623A-1000/2000/3000
High Current Range Extenders
www.guildline.com
NOTICE
The contents and information contained in this manual are proprietary to
Guildline Instruments Limited. They are to be used only as a guide to the
operation and maintenance of the equipment with which this manual was
issued and may not be duplicated or transmitted by any means, either in whole
or in part, without the written permission of Guildline Instruments Limited.
OM6623A-1_2_3000-D1-00
01 September 2021

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Summary of Contents for Guildline 6623A-1000

  • Page 1 NOTICE The contents and information contained in this manual are proprietary to Guildline Instruments Limited. They are to be used only as a guide to the operation and maintenance of the equipment with which this manual was issued and may not be duplicated or transmitted by any means, either in whole or in part, without the written permission of Guildline Instruments Limited.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ....................... 1-1 1.1. SCOPE ................................1-1 1.2. GENERAL DESCRIPTION ..........................1-1 1.3. OVERVIEW ..............................1-2 1.4. PRINCIPLE OF OPERATION ........................1-2 INSTALLATION ......................2-1 2.1. PRELIMINARIES ............................2-1 2.1.1. Unpacking ............................... 2-1 2.1.2. Power Voltage Selection ..........................2-1 2.1.3.
  • Page 4 VERIFICATION AND CALIBRATION ..............5-1 5.1. RATIO ACCURACY VERIFICATION ......................5-1 5.1.1. Purpose ................................5-1 5.2. TEST EQUIPMENT REQUIRED ........................5-1 5.3. PROCEDURE ..............................5-2 5.3.1. PRELIMINARY MEASUREMENT OF THE 9230A-100-0.01Ω SHUNT ..........5-2 5.3.2. VERIFICATION OF THE x200-15A RATIO OF THE 6623A-3000 RANGE EXTENDER ....5-2 5.3.3.
  • Page 5 LIST OF FIGURES FIGURE 1-1 : MODEL 6623A-3000 BLOCK DIAGRAM ..................1-3 FIGURE 2-1 : INPUT FUSE ACCESS DCC3000 ...................... 2-2 FIGURE 2-2 : 6623A-3000 FRONT VIEW ........................ 2-11 FIGURE 2-3 : 6623A-3000 REAR VIEW ........................2-13 FIGURE 2-4 : REAR PANEL CONNECTIONS – 6623A-3, X20-3A RANGE ............. 2-15 FIGURE 2-5 : REAR PANEL CONNECTIONS –...

  • Page 6: List Of Tables

    LIST OF TABLES TABLE 2-1 : FUSE RATINGS ............................2-2 TABLE 3-1 : 6623A-3000 RECOMMENDED LOW OHM MODE TEST SETUPS ..........3-6 TABLE 6-1 : MODEL 6622A AND 6623A-3000 ERROR MESSAGES ..............6-2 TABLE 6-2 : MAINTENANCE SCHEDULE ......................6-3 TABLE 7-1 : GENERAL SPECIFICATIONS ......................

  • Page 7: Introduction

    The three models are essentially the same except for the test current capability. The 6623A-1000 enables test currents up to 1000 A to be realized and is supplied with one CS1000 current source chassis. The models 6623A-2000 and 6623A-3000 models provide for test currents up to 2000 and 3000 A and are supplied with two and three CS1000 current source chassis’s respectively.

  • Page 8: Overview

    Section 1 1.3. OVERVIEW The Model 6623A-3000 Current Range Extender is a precision, fixed ratio, direct current transformer based on the principle of the direct current comparator. Figure 1-1 illustrates the instrument circuits in block diagram form with the connections to the 6622A Bridge. A precision programmable current source is incorporated into the extender such that measurements can be fully automated through the 6622A current comparator resistance bridge using either front panel setup or fully automatic computer control.

  • Page 9: Figure 1-1 : Model 6623A-3000 Block Diagram

    Section 1 CS1000 Current Sources DCC3000 DCC Comparator CS1000 Flux Detector Servo Amplifier CS1000 Demodulator Magnetic Slave PSU Modulator CS1000 x20000 Current 1000T Comparator x2000 Toroid 3000A 100T x200 Servo Amplifier Flux Detector 3A Bipolar Demodulator Magnetic Current Source Modulator Slave PSU 1000T Current...

  • Page 10: Installation

    220Volt, 50/60Hz operation with a power requirement of two 30A, 220Volt circuits. The 6623A-1000 and 6623A-2000 models are in the same 22U or smaller rack cabinet fully configured for 220Volt, 50/60Hz operation with a power requirement of one 30A, 220Volt circuit and may have the 6623A-3 unit installed in the same cabinet as space allows.

  • Page 11: Fuse Replacement

    Section 2 100 to 240 Volt operation if desired and connected to a separate source as with the 6622A Bridge as described in the 6623A-3 Operators Manual. The 6623A-3 selection is noted on the back panel of the instrument to coincide with the requested voltage at the time of order. Two 30 A, 220 Volt line cords with NEMA L6-30P molded plugs are supplied with the 6623A-3000 range extender.

  • Page 12: Setup And Power On

    Verify that the Line Voltage to be used matches the Line Voltage setting marked on the back panel of the 6623A-3000. If the Line Voltage to be used does not match, contact Guildline Instruments Limited for instructions before proceeding.
  • Page 13 'POWER' indicator on each 15A section of the power bars light up. Note that the 6623A-1000 will have only one power bar installed. Turn on the power switch to the 6622A Bridge. Then turn on the power switch to the 6623A-3 Extender.

  • Page 14: Incoming Inspection

    Section 2 2.2. INCOMING INSPECTION If no errors are displayed during power up of the 6622A Bridge or 6623A-3000 Range Extender, (see section 2.1.4) then proceed to measure a 0.1 ohm resistor referenced to a 1 ohm standard. Note that the 6622A Bridge may require a firmware upgrade if it has not been shipped with the range extender.
  • Page 15 Section 2 Note: To start the system, turn on the following equipment in specified order. Turn on Bridge or 66259 Controller. Turn on 3 A Range Extender. Turn on DCC 3000 (i.e. torroid at the bottom of range extender equipment rack). Turn on each of the three 1000 A Current Sources that are in the range extender equipment rack.
  • Page 16 Select 'Low Ohms' mode function key. Press the right hand key until the selection '6623A-3000' is shown and select 'Edit' function key. Alternatively select '6623A-1000' or '6623A-2000' as appropriate. Note that the 6622A may have to be programmed for the 3000A...
  • Page 17 Section 2 Select the down arrow key to highlight the next line on the display screen 2- Enter the maximum Rs current value of 150 mA. Verify that all entered data is correct, and then press 'OK'. Step 7) Press the 'Previous' function key twice to come back to the main menu. Step 8) Press the 'Measure' function key and then the 'Meas Off' sub-menu function key to start the measurement.
  • Page 18 Section 2 Select the down arrow key to highlight the next line on the display screen 2- Enter the maximum Rs current value of 150 mA. Verify that all entered data is correct, and then press 'OK'. Step 12) Press the 'Previous' function key twice to come back to the main menu. Step 13) Press the 'Measure' function key and then the 'Meas Off' sub-menu function key to start the measurement.
  • Page 19 Section 2 Step 17) Press the 'Previous' function key twice to come back to the main menu. Step 18) Press the 'Measure' function key and then the 'Meas Off' sub-menu function key to start the measurement. The 6622A Bridge will begin by showing the nominal ohm value of the resistor to be measured, and then continue to go through a number of rough measurement cycles until a full resolution measurement value is displayed.

  • Page 20: 6623A-3000 Front Panel

    Section 2 2.3. 6623A-3000 FRONT PANEL There are no controls on the front panel of the 6623A-3000. Figure 2-2 : 6623A-3000 Front View OM6623A-1_2_3000-D1-00 2-11 01 September 2021...

  • Page 21: Power

    6 slave internal 150 A current source modules. A fault will cause the particular current source to be disconnected and will allow the remaining units to continue to function. Note that the 6623A-1000 and 6623A-2000 models will have only one or two CS1000 Current Source modules respectively. OM6623A-1_2_3000-D1-00...

  • Page 22: 6623A-3000 Rear Panel Connectors And Controls

    Section 2 2.4. 6623A-3000 REAR PANEL CONNECTORS AND CONTROLS Figure 2-3 : 6623A-3000 Rear View 2.4.1. Line Input Connectors The Line Input Connectors are a combination of a 3-prong AC standard male IEC connector, an ON/OFF switch. The DCC3000 Comparator section has a fused line input with access for fuse replacement.

  • Page 23: Resistor Under Test Input Terminals

    200A fuse internal to the instrument. There are two sets of six knobs for connection to the 500A cables to the x20,000-3000A range to provide a 3000A connection capability. For the 6623A-1000 and the 6623A-2000 models two sets of two and four knobs are provided respectively.

  • Page 24: Figure 2-4 : Rear Panel Connections - 6623A-3, X20-3A Range

    Section 2 Figure 2-4 : Rear Panel Connections – 6623A-3, x20-3A Range OM6623A-1_2_3000-D1-00 2-15 01 September 2021...

  • Page 25: Figure 2-5 : Rear Panel Connections - 6623A-3000, X200-15A Range

    Section 2 Figure 2-5 : Rear Panel Connections – 6623A-3000, x200-15A Range OM6623A-1_2_3000-D1-00 2-16 01 September 2021...

  • Page 26: Quick Measurement Guide

    Section 3 QUICK MEASUREMENT GUIDE 3.1. MEASUREMENT OPERATION GUIDE This section contains information regarding the measurement of resistors in the range of 0.1µ ohm to 10 ohms. This guide is provided for manual control of the 6623A-3000 from the front panel of the 6622A Bridge.

  • Page 27: Low Ohm Mode Resistance Measurement For All 6622A Models With The 6623A-3000

    Section 3 3.1.1. Low Ohm Mode Resistance Measurement for all 6622A Models with the 6623A-3000 The 6622A in its Low Ohm Mode enables measurement of resistors below 100 ohms. When used with a model 6623A-3000 High Current Range Extender, measurement of low ohm resistors can be made at a maximum test current up to 3000A.
  • Page 28 This can be done by pressing the softkey until the displayed value is changed to '6623A-3000A'. Alternatively select '6623A-1000' or '6623A-2000' as appropriate. Select 'Edit' function key. Enter standard resistor value on highlighted 'Resistance RS:' line on display by using the numeric key pad.

  • Page 29: Recommended Test Setup Limits And Precautions For 6623A-3000

    Section 3 3.1.2. Recommended Test Setup Limits and Precautions for 6623A-3000 See Table 3-1 for the recommended test setup limits for various resistor ranges. Note that the current in the standard resistor is controlled by the resistance of the resistor to be measured and the extender current such that the potentials across each resistance are equal and can be determined by the following formula: Standard Resistor Current = Test Resistor Current x (Rx / Rs)

  • Page 30: Example Calculations

    Section 3 3.1.4. Example Calculations For example, if a 0.001 ohm shunt is to be measured at 100 A; The extender range x2000-150A is required to satisfy the test current requirement. The standard resistor must be at least; Rs = 2000 x 0.001 / 2 = 1 ohm or higher, so choose a standard resistor of 1 ohms.

  • Page 31: Table 3-1 : 6623A-3000 Recommended Low Ohm Mode Test Setups

    Section 3 Rx Resistor Ix-max Rs Current Reversal Extender Comment (Ω) (mA-max) Rate (sec) (Ω) Ratio/Range 1000 1 - 10 0.32 20:1 / 3A Limit of 10 mW in Rs 0.32 - 1 20:1 / 3A Limit of 10 mW in Rs 0.1 - 0.32 20:1 / 3A Limit of x 20, 3A Range...

  • Page 32: Bridgeworks Data Acquisition Software

    Section 3 3.2. BRIDGEWORKS DATA ACQUISITION SOFTWARE The BridgeWorks, version 2.1c or higher, Data Acquisition Software is the control software for the 6622A Series Automatic DCC Resistance Bridges and the 6623A series of Current Range Extenders. Using the 6622A with the BridgeWorks Data Acquisition Software will increase the functionality and the productivity of the bridge.

  • Page 33: Instrument Operation

    Section 4 INSTRUMENT OPERATION 4.1. FRONT PANEL OPERATING PROCEDURE The 6622A Bridges and 6623A-3000 Current Range Extenders are manually operable from the front panel of the 6622A. The BridgeWorks Software User Manual contains the operating instructions for fully automatic software control of the 6622A Automatic DCC Resistance Bridge and the 6623A-3000 Current Range Extender via the computer system.

  • Page 34: Verification And Calibration

    DC Current Shunt Standard Guildline 9230A-3000-0.00005Ω Temperature Controlled Oil/Air Bath Guildline 5010 or 5032 Note: The 6623A-3000 is calibrated at the factory using a temperature controlled oil bath controlled to within ± 0.02 °C. If the ambient conditions in the laboratory are sufficiently controlled to within ±...
  • Page 35 Section 5 5.3. PROCEDURE 5.3.1. PRELIMINARY MEASUREMENT OF THE 9230A-100-0.01Ω SHUNT Place the 9330/1Ω Resistance Standard and the 9230A-100-0.01Ω Current Shunt Standard in the Bath and allow stabilizing in temperature at 25.0°C. Connect the 9330/1 Standard to the 6622A Current Comparator Bridge Rs terminals and connect the 9230A-100-0.01Ω...
  • Page 36 Section 5 Note that the verification of the test current magnitude of the x200-15A range may be accomplished at this point by measurement of the voltage across the potential terminals of the shunt and calculating the test current value based on the measured resistance of the shunt over the range of test currents.

  • Page 37: Figure 5-1 : Model 6623A-3000 Setup, X2000-150A Range

    Section 5 Figure 5-1 : Model 6623A-3000 setup, x2000-150A Range 5.3.4. VERIFICATION OF THE x20,000-3000A RATIO OF THE 6623A-3000 RANGE EXTENDER Replace the 9230A-300-0.001Ω Shunt with the 9230A-1000-0.0001Ω Shunt. OM6623A-1_2_3000-D1-00 01 September 2021...
  • Page 38 Note that a calibrated current shunt that is suitable for use at the high end of the current range will be required such as the Guildline model 9230A-3000-00005Ω. OM6623A-1_2_3000-D1-00...

  • Page 39: Figure 5-2 : Model 6623A-3000 Setup, X20000-3000A Range

    Section 5 Figure 5-2 : Model 6623A-3000 setup, x20000-3000A Range OM6623A-1_2_3000-D1-00 01 September 2021...

  • Page 40: Troubleshooting And Maintenance

    Section 6 TROUBLESHOOTING AND MAINTENANCE 6.1. INTRODUCTION This section covers troubleshooting, repair and verification of the 6623A Current Range Extender. 6.1.1. Error Messages The 6622A Automatic DCC Resistance Bridge will display error messages either on the front panel display of the 6622A Resistance Bridge in manual mode or on the computer monitor when using the BridgeWorks Data Acquisition Software.

  • Page 41: Table 6-1 : Model 6622A And 6623A-3000 Error Messages

    Section 6 Error Number Error Corrective Measures nV Detector Communication None, fatal hardware error within the Failure 6622A Bridge, (try power switch) Invalid Test Setup Resistors not wired to Rx and Rs terminals properly, improper test setup No current path on Rx or Rs terminals, Servo Railed improper connections or 6623A failure Nano Zero, nVoltmeter not...

  • Page 42: Table 6-2 : Maintenance Schedule

    The air filter screens can be removed and cleaned on a yearly basis or may be required. The Service Manual available on request from Guildline Instruments Limited provides complete alignment and test information required if the 6623A-3000 fails to meet performance specifications in section 5.
  • Page 43 RsP1 terminal and is approximately equal to that of the voltage on the shunt resistance. If the polarity of the displayed current on the bridge is not initially positive this indicates a problem within the range extender internal connections. Contact Guildline Instruments to resolve this particular problem.

  • Page 44: Table 7-1 : General Specifications

    Section 7 APPENDICES 7.1. GENERAL SPECIFICATIONS 6623A-1000/2000/3000 Current Range Extender General Specifications Operating Temperature to Full +23 ± 4 °C Specification +73 ± 7 °F Operating Temperature Maximum +10 to +40 °C Range <50% RH +50 to +104 °F Storage Temperature Maximum Range -20 to +60 °C...

  • Page 45: Table 7-2 : General Specifications (Continued)

    Section 7 7.2. GENERAL SPECIFICATIONS (continued) 6623A-1000/2000/3000 Current Range Extenders General Specifications Ω Resistance Range 0.1µ to 10 Transformation Ratios 200:1, 2000:1, 20,000:1 Transformation Ratio Accuracies ±0.4, ±0.5, ±0.6 Linearity ±0.02 ppm of full scale ratio Temperature Coefficient ±0.02 ppm/°C...

This manual is also suitable for:

6623a-20006623a-3000

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