Basler DECS-100 User manual

INSTRUCTION MANUAL
FOR
DIGITAL EXCITATION CONTROL SYSTEM
DECS-100
Publication: 9287500991
Revision: K 05/11

9287500991 Rev K DECS-100 Introduction i
INTRODUCTION
This instruction manual provides information about the operation and installation of the DECS-100 Digital
Excitation Control System. To accomplish this, the following information is provided:
 General Information and Specifications
 Controls and Indicators
 Functio nal Description
 Ins tallation
 Maintenance and Troubleshooting
WARNING!
To avoid person al injury o r equipment damage, only qualified person nel should
perform the procedures in this manual.
Lethal voltage is present at the rear panel when the unit is energized. Rear panel
connections should be made only when the unit id de-energized.
NOTE
Be sure that the DECS-100 is hard-wired to earth ground with no smaller than 12
AWG copper wire atta ched to the grou nd terminal o n the rea r of the unit ca se.
When the DECS-10 0 is configu red in a system with other device s, it is
recommended to use a separate lead to the ground bus from each unit.
CAUTION
The Man ual mode excit ation level must be eva luated pri or to enabling t his
feature. If the level of excitation cu rrent is inappropriate for the generator, severe
damage to the generator may occur.
Improper PID numbers will result in poor system performance or system damage.
When ap plying ope rating power for programming purposes, o bserve th e pre-
cautions called out in Section 4, Installation, Preliminary Setup.
When p rogramming th e DECS -100 wit hout th e gen erator spin ning, t he
connections to DECS-100 terminals F+ and F– should be removed.
Before uploading a settings file, remove ope rating power f rom t he DECS-100,
disconnect the field wirin g from termin als F+ a nd F–, and re -apply operatin g
power to the DECS-100.

ii DECS-100 Introduction 9287500991 Rev K
First Printing: March 2001
Printed in USA
© 2011 Basler Electric, Highland Illinois 62249 USA
All Rights Reserved
May 2011
It is not the intention of this manual to cover all details and variations in equipment, nor does this manual
provide data for every possible contingency regarding installation or operation. The availability and design
of all feature s and o ptions are su bject to modifica tion without notice. Shoul d further info rmation b e
required, contact Basler Electric.
BASLER ELECTRIC
12570 STATE ROUTE 143
HIGHLAND IL 62249 USA
http://www.basler.com, [email protected]
PHONE [phone] FAX [phone]
CONFIDENTIAL INFORMATION
of Basler Electric, Highland Illinois, USA. It is loaned for confidential use, subject
to return on request, and with the mutual understanding that it will not be used in
any manner detrimental to the interest of Basler Electric.

9287500991 Rev K DECS-100 Introduction iii
REVISION HISTORY
The following information provides a historical summary of the changes made to the DECS-100
hardware, firmware, and software. The corresponding revisions made to this instruction manual
(9287500991) are also summarized. Revisions are listed in chronological order.
Hardware
Version and Date
Change
E, 01/01
•
Initial release
F, 05/01 •
Deepened potting shell
G, 10/01
•
Began supplying mounting screws
H, 02/02
•SIL-PADS were added between power components and the heat sinks
•
Added manufacturing origin to the rear label
J, 07/02
•Revised EEPROM
K, 02/03
•
Replaced transistor Q8B1 with an improved part
L, 03/03
•
Incremental improvements to firmware and BESTCOMS
M, 01/04
•Improved flash memory retention
N, 05/05
•Redesigned current transformer
•Added front panel Underexcitation Limiting indicator
•
Enhanced EMI/RFI immunity
O
•
Version letter O not used
P, 08/06
•Updated CD-ROM supplied with unit to include English and French
language instruction manuals
Q
•
Version letter Q not used
R, 04/07
•
Resolved UEL issue with firmware modification
S, 05/07 •
Provided German language manual on CD-ROM supplied with DECS-100
T, 07/07
•
Released firmware version 2.13.XX
U, 01/08
•
Improved power amplifier circuitry with more robust components
V, 03/08 •
Added Setpoint Auto Save feature
W, 03/09
•
Released BESTCOMS version 1.08.XX.
X, 02/10
•
Added enhancement for production testing.
Firmware
Version and Date
Change
1.09.XX, 01/01
•
Initial release
1.11.XX, 07/01
•Enabled the protection function during the first 5 seconds of operation
•Modified the OEL setpoint scale factor to be compatible with BESTCOMS
version 1.03.XX
•Added the scale factor for per-unit gain
•
Established minimum voltage regulation at 30% of nominal sensing voltage
1.12.XX, 03/02 •
Added register to detect CT type
2.13.XX, 07/07
•Added underexcitation limiting
•Added takeover-style excitation limiting
•
Added bus voltage matching provisions
2.14.XX, 03/08
•
Added Setpoint Auto Save setting
BESTCOMS for
Windows®OS
Version and Date
Change
1.02.XX, 02/01
•
Initial Release
1.03.XX, 08/01 •Changed OEL scale from 100 to 1,000 to match the change in firmware
version 1.11.01
•Changed OEL default setting from 1 to 15
•Changed the default for all protection functions to enabled
•
Add support for French regional settings
1.04.XX, 04/02
•
Made BESTCOMS compatible with older firmware versions

iv DECS-100 Introduction 9287500991 Rev K
BESTCOMS for
Windows®OS
Version and Date
Change
•Added support for all regional settings
•Enabled reading of secondary CT value for units with firmware version
1.12.01 and higher
•Simplified the Analysis screen
•Added feature to calculate and send voltage matching reference for
different generator and bus PT ratios
•
Changed minimum Ki setpoint from 0 to 0.01
1.05.XX, 05/05
•Added underexcitation limiting capability
•Added ability to select either summing point or takeover style OEL
•
Added provisions for bus voltage matching
1.06.XX, 11/07
•
Added compatibility with Microsoft® Vista to BESTCOMS
1.07.XX, 03/08
•
Added Setpoint Auto Save setting.
1.08.XX, 03/09
•
Improved communications with DECS-100.
1.09.XX, 01/11
•Added Windows® 7 compatibility and improved field overvoltage
shutdown.
BESTCOMS for
Palm®OS
Version and Date
Change
1.01.XX, 01/01
•
Initial Release
1.02.XX, 08/01
•Added a Check for New Version button to the Contact Basler screen
•Added a date/time stamp to the “Save to File” names
•
Added version checking
1.03.XX, 04/02
•Added password protection
•
Improved version checking function
NOTE
•BESTCOMS for Palm OS is compatible only with firmware versions
1.12.XX and earlier
Manual
Revision and Date
Change
—, 03/01
•
Initial release
A, 03/01
•In Section 5, BESTCOMS Software for the Windows® Operating System
and Section 6,
BESTCOMS Software for the Palm OS® Platform , Step 2 of
Installing BESTCOMS was revised to reflect the addition of an auto-start
utility for the DECS-100 CD-ROM
B, 08/01
•Added Embedded Software subsection to Section 5, BESTCOMS Software
for the Windows® Operating System
•
Corrected various minor errors throughout manual
C, 05/02 •Revised the torque specification for the mounting screws supplied with unit
•In Section 5, BESTCOMS Software for the Windows® Operating System
and Section 6,
BESTCOMS Software for the Palm® OS Platform , text and
illustrations were revised to accommodate software enhancements
D, 01/03 •Revised Voltage Matching Time Adjustment Range from 0 to 300 seconds
to 1 to 300 seconds throughout manual
•
Corrected figure number references in Sections 5 and 6
E, 03/04
•Added Operating Power Considerations During DECS-100 Programming to
Section 4, Installation, Preliminary Setup
•Added caution box regarding application of operating power during DECS-
100 programming to Section 5,
BESTCOMS for Windows® OS and
Section 6,
BESTCOMS for Palm OS®
•
Corrected CT ratio setting range stated in Section 5

9287500991 Rev K DECS-100 Introduction v
Manual
Revision and Date
Change
F, 05/05
•Added material covering added UEL capability
•Revised all drawings to show new front panel with UEL indicator
•Updated all illustrations of rear panel to show revised CT
•Added discussion of summing point and takeover style OEL limiting
•Revised voltage matching description to cover Maintain and Revert modes
•Corrected the hole drilling diameter shown in Figure 4-2
•Added illustration/description for using the ICRM-7 with the DECS-100
•Removed Section 6,
BESTCOMS Software for the Palm® OS Platform and
moved
Maintenance and Troubleshooting to Section 6
•
Added troubleshooting procedure for a UEL annunciation
G, 03/07
•Corrected illustration and descriptions of BESTCOMS Metering, Operation
and Alarms screen, Operation tab
•
Removed expired patent information
H, 05/08
•Added DNV compliance statement to manual specifications
•
Added description of BESTCOMS Setpoint Auto Save feature
J, 10/08
•Revised the setting ranges of control gain settings OEL KI, OEL Kg,
UEL KI, and UEL Kg from 0–1,000 to 0–300 to reflect changes made in
BESTCOMS version 1.07.01.
K, 05/11 •Revised
Introduction to reflect new epoxy-potted package.
•Removed “(optional feature)” from note 5 of Figures 4-7 to 4-10, due to the
setpoint option now being standard.
•Added storage / electrolytic capacitors procedure to Section 6.
•
Corrected various minor errors throughout manual

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9287500991 Rev K DECS-100 Introduction vii
CONTENTS
A detailed table of contents is provided at the start of each manual section. The manual sections are
ordered as follows.
Section 1 General Information .................................................................................................. 1-1
Section 2 Human-Machine Interface......................................................................................... 2-1
Section 3 Functional Description .............................................................................................. 3-1
Section 4 Installation ................................................................................................................. 4-1
Section 5 BESTCOMS Software............................................................................................... 5-1
Section 6 Maintenance and Troubleshooting............................................................................ 6-1

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