Guildline 6623A-PCS/1000 User manual

Operation Manual
For The
6623A-PCS/1000/2000/3000
Precision Current Sources
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.
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TABLE OF CONTENTS
1. 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
2. INSTALLATION........................................................................................................2-1
2.1. PRELIMINARIES............................................................................................................................................2-1
2.1.1. Power Voltage Selection................................................................................................................................2-2
2.1.2. Fuse Replacement...........................................................................................................................................2-2
2.1.3. Setup and Power On.......................................................................................................................................2-2
2.2. INCOMING INSPECTION.............................................................................................................................2-4
2.3. 6623A-PCS/3000 FRONT PANEL................................................................................................................2-10
2.3.1. Power............................................................................................................................................................2-11
2.3.2. Fault..............................................................................................................................................................2-11
2.4. 6623A-PCS/3000 REAR PANEL CONNECTORS AND CONTROLS...................................................2-12
2.4.1. Line Input Connectors..................................................................................................................................2-13
2.4.2. Current Output Terminals............................................................................................................................2-13
2.4.3. Input Control Connector...............................................................................................................................2-13
3. QUICK OPERATION GUIDE....................................................................................3-1
3.1. OPERATION GUIDE......................................................................................................................................3-1
3.1.1. Recommended Test Setup Procedure for the 6623A-PCS/3000 ..................................................................3-1
3.1.2. Setup Limits and Precautions for 6623A-PCS/3000.....................................................................................3-2
3.1.3. Checks and Precautions..................................................................................................................................3-2
4. VERIFICATION AND CALIBRATION......................................................................4-1
4.1. RATIO ACCURACY VERIFICATION........................................................................................................4-1
4.1.1. Purpose ...........................................................................................................................................................4-1
4.2. TEST EQUIPMENT REQUIRED..................................................................................................................4-1
4.3. PROCEDURE....................................................................................................................................................4-2
4.3.1. VERIFICATION OF THE 3 A TO 15 A RANGE.......................................................................................4-2
4.3.2. VERIFICATION OF THE 15 A to 150 A RANGE .....................................................................................4-2
4.3.3. VERIFICATION OF THE 150 A to 1000/2000/3000 A RANGE...............................................................4-3
4.3.4. VERIFICATION OF THE 2000 A AND 3000 A RANGE OF CURRENTS.............................................4-3

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5. TROUBLESHOOTING AND MAINTENANCE.........................................................5-1
5.1. INTRODUCTION.............................................................................................................................................5-1
5.1.1. Error Messages...............................................................................................................................................5-1
5.1.2. Model CS1000 'Fault' Indicators....................................................................................................................5-1
5.1.3. Maintenance ...................................................................................................................................................5-1
5.1.4. Maintenance Guidelines and Schedule..........................................................................................................5-1
5.1.5. Connection Problems .....................................................................................................................................5-2
5.1.6. Safety Features ...............................................................................................................................................5-2
6. APPENDICES...........................................................................................................6-1
6.1. GENERAL SPECIFICATIONS......................................................................................................................6-1
6.2. GENERAL SPECIFICATIONS (continued).................................................................................................6-2

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LIST OF FIGURES
FIGURE 1-1 : MODEL 6623A-PCS/3000 BLOCK DIAGRAM ...............................................................................1-3
FIGURE 2-1 : 6623A-PCS/3000, 15 A RANGE CONNECTIONS............................................................................2-7
FIGURE 2-2 :: 6623A-PCS/3000, 150 A RANGE CONNECTIONS ........................................................................2-8
FIGURE 2-3 : 6623A-PCS/3000, 3000 A RANGE CONNECTIONS........................................................................2-9
FIGURE 2-4 : 6623A-PCS/3000 FRONT VIEW........................................................................................................2-10
FIGURE 2-5 : 6623A-PCS/3000 REAR VIEW ..........................................................................................................2-12
FIGURE 3-1 : 6623A-PCS/3000 TEST SETUP COMPLIANCE LIMITS ..............................................................3-2

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LIST OF TABLES
TABLE 3-1 : TEST CURRENT CABLE SIZE REQUIREMENTS.........................................................................3-3
TABLE 4-2 : 6623A-PCS/1000/2000/3000 CURRENT CALIBRATION RESULTS .............................................4-4
TABLE 5-3 : MAINTENANCE SCHEDULE..............................................................................................................5-2
TABLE 6-1 : GENERAL SPECIFICATIONS.............................................................................................................6-1
TABLE 6-2 : GENERAL SPECIFICATIONS (CONTINUED)................................................................................6-2

Section 1
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1. INTRODUCTION
1.1. SCOPE
This document describes the installation, operation, specifications, maintenance and verification of
the Model 6623A-PCS/1000/2000/3000 Precision Current Sources. Precautions associated with
very high current connections are provided for purposes of user safety and current source
reliability. This manual describes mainly the 6623A-PCS/3000 Precision Current Source as this
model incorporates the full complement of features in all the models. Differences with respect to
the 6623A-PCS/1000 and the 6623A-PCS/2000 models are stated where appropriate.
1.2. GENERAL DESCRIPTION
The Model 6623A-PCS/1000/2000/3000 Precision Current Sources supply positive and negative
currents in the range of 3 A to 1000, 2000 or 3000 A depending on the model. The three models
are essentially the same except for the test current capability and the cable connection terminal
configuration. The 6623A-PCS/1000 enables test currents up to 1000 A to be realized and is
supplied with one CS1000 current source chassis. The models 6623A-PCS/2000 and 6623A-
PCS/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. The lower current models may be upgraded by
the addition of one or two CS1000 chassis’s.
Each CS1000 current source chassis consists of seven 150 A current source modules connected
internally in parallel. The CS1000 is controlled by the Model 66259 Control Unit included with
the 6623A-PCS Precision Current Source. The control unit provides three current ranges, selection
of positive or negative currents and correction coefficients to control the accuracy of the three
current ranges. Current ranges of 3 to 15 A, 15 to 150 A and 150 A to full scale current are
provided. The first CS1000 chassis is preconfigured as the master unit and controls the additional
units through the Model 66259 Control Unit. The 66259 Control Unit can be setup to automatically
reverse the polarity of the supplied current at a selectable rate.
The 6623A-PCS Series is pre-wired and configured in a 22U high rack cabinet designed to operate
at a nominal power line voltage of 208 to 240 VAC. The rack mount cabinet includes a bus bar
arrangement to connect the CS1000 units in parallel and provide for suitable terminal connections
to external cables. A terminal panel at the top of the cabinet provides for terminal connections for
the two lower current ranges. These lower ranges are fused to provide suitable over current
protection. All necessary interconnections of the CS1000 current sources are integrated into one
cabinet such that no hardware reconfiguration is required over the full range of operation other than
the connection of the current terminals to the correct range on the back panel. An Emergency Off
switch is provided that can be placed in a convenient place close to the 6623A-PCS current source
to allow a for the immediate interruption of the test current if an emergency should arise.
Refer to section 2-3 for front and rear views of the system and descriptions of indicators, controls
and terminals.

Section 1
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1.3. OVERVIEW
The Model 6623A-PCS/1000/2000/3000 Precision Current Sources are precision sources of both
positive and negative currents up to a full scale of 3000 A. Figure 1-1 illustrates the instrument
circuits in block diagram form with the connections to the load. A Model 66259 Control Unit
provided with the system is programmable and allows for selection of range and polarity of the test
current. The Model 66259 Control Unit is provided with a control cable to allow the unit to be
hand held or placed on a bench near the 6623A-PCS current source.
There are no adjustments within the 6623A-PCS current source that are required for proper
operation, but the Model 66259 Control Unit must be set up with a specific range profile and test
current calibration coefficients. The Model 66259 Control Unit is generally configured at the
factory for the 6623A-PCS current source. A Summary of Coefficients for later reference as may
be needed is provided with each 6623A-PCS current source.
A complete description of the Model 66259 Control Unit including calibration and control features
is provided in a separate Operation Manual, (OM66259), with each 6623A-PCS current source.
1.4. PRINCIPLE OF OPERATION
The Model 6623A-PCS/1000/2000/3000 Precision Current Sources are modular in design. The
base module consists of a fully integrated line operated 150 A direct current source printed circuit
board. Seven of the 150 A modules are assembled in a single 5U rack mountable chassis. The
direct current outputs are connected in parallel to a pair of bus bars. The control inputs of the
CS1000 chassis’s are connected in series such that the same input control current passes through
all the 150 A modules. The control signals also provide for the selection of one of three available
ranges.
The 150 A modules are designed such that if a fault is detected the outputs of the module are
isolated from the main bus bar. In this way the remaining 150 A modules will continue to operate.
Fault indicators are provided for each 150 A module in each chassis assembly so that the module at
fault can be quickly identified.

Section 1
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Figure 1-1 : Model 6623A-PCS/3000 Block Diagram
CS1000 Current Sources
CS1000
CS1000
CS1000
P1
P2
C1
C2
66259 Extender
Control Unit
Emergency Stop
Control
Output Current Buss
Load