GE D20, D200 Technical Overview
GE
D20/D200
PRPI-019
Version 3.00 Revision 10
GE Information
Grid Solutions
Technical Overview
D20/D200 Technical Overview
GE Grid Solutions
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D20/D200 Technical Overview
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Contents
About this Document .....................................................................................................................1
Purpose ........................................................................................................................................ 1
Who Should Use this Document? ............................................................................................... 2
Additional Documentation .......................................................................................................... 2
Product Support .............................................................................................................................3
GE Grid Solutions Web Site ....................................................................................................... 3
GE Technical Support Library .................................................................................................... 3
Contact Technical Support .......................................................................................................... 3
What’s New.....................................................................................................................................4
D20ME II Main Processor .......................................................................................................... 4
D20EME (Ethernet/Memory Expansion) ................................................................................... 5
New D20/D200 I/O Peripherals .................................................................................................. 5
D20AC, AC Analog Input Peripheral ..................................................................................... 5
D20 High-Voltage Peripherals ................................................................................................ 6
D20K4Z Termination Module ................................................................................................ 6
New Power Supplies ................................................................................................................... 6
Multiple Language Support ........................................................................................................ 7
1. System Overview ........................................................................................................................8
1.1 System Architecture ............................................................................................................ 9
1.2 Hardware Design ................................................................................................................ 9
1.3 D20/D200 Product Comparison ........................................................................................ 10
1.4 D20 RTU Platform ............................................................................................................ 10
1.5 D200 Substation Automation Platform ............................................................................. 13
1.5.1 D200 Features .............................................................................................................. 13
1.6 D20/D200 RTU Hardware ................................................................................................ 16
1.6.1 Chassis ......................................................................................................................... 16
1.6.2 Main Processor ............................................................................................................. 17
1.6.3 Ethernet/Memory Expansion (EME) Kit ..................................................................... 19
1.6.4 Power Supplies ............................................................................................................. 19
1.6.5 Modems ........................................................................................................................ 20
1.7 I/O Peripherals .................................................................................................................. 20
1.8 Auxiliary Equipment ......................................................................................................... 21
1.9 Communications ............................................................................................................... 21
1.10 Firmware ........................................................................................................................... 22
1.11 Configuration and Maintenance Software ........................................................................ 22
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1.12 System Documentation ..................................................................................................... 22
2. Detailed Technical Description ...............................................................................................25
2.1 Mechanical Design and Packaging ................................................................................... 25
2.1.1 General ......................................................................................................................... 25
2.1.2 Enclosure ...................................................................................................................... 26
2.1.3 Chassis ......................................................................................................................... 26
2.1.4 Peripheral I/O Module Assembly ................................................................................ 28
2.1.5 Environmental .............................................................................................................. 29
2.2 Main Processor.................................................................................................................. 30
2.2.1 Hardware ...................................................................................................................... 30
2.2.2 D20/D200 Main Processor Specifications ................................................................... 31
2.2.3 Firmware ...................................................................................................................... 32
2.2.4 Time Synchronization .................................................................................................. 34
2.3 Ethernet/Memory Expansion (EME) Kit .......................................................................... 36
2.4 I/O Peripheral Modules ..................................................................................................... 37
2.4.1 Types of I/O Peripherals .............................................................................................. 37
2.4.2 Termination Types ....................................................................................................... 38
2.4.3 Hardware ...................................................................................................................... 40
2.4.4 Firmware ...................................................................................................................... 41
2.4.5 I/O Processing .............................................................................................................. 43
2.4.6 D20S Digital Input Peripheral ..................................................................................... 44
2.4.7 D20A Analog Input Peripheral .................................................................................... 48
2.4.8 D20K Control Output Peripheral ................................................................................. 53
2.4.9 Interposing Relay Panel ............................................................................................... 57
2.4.10 D20C Combination I/O Peripheral ............................................................................ 59
2.4.11 D20AC, AC Analog Input Peripheral ........................................................................ 62
2.5 D20/D200 Power Supplies and Chargers ......................................................................... 64
2.5.1 D20 Power Supply Specifications ............................................................................... 65
2.5.2 D20 Battery Chargers .................................................................................................. 66
2.6 D20 Modems ..................................................................................................................... 67
2.6.1 WESDAC 202/V.23 Modem Specifications ................................................................ 68
2.7 Communications ............................................................................................................... 69
2.8 D.20 Link .......................................................................................................................... 70
2.8.1 Designing a Distributed D20 Network......................................................................... 71
2.8.2 D.20 Communication Interface .................................................................................... 72
2.8.3 Adapter Modules .......................................................................................................... 73
2.8.4 D.20 Fiber Optic Splitter .............................................................................................. 73
2.8.5 Communication Cables ................................................................................................ 74
2.8.6 Power Requirements .................................................................................................... 75
2.9 Redundancy....................................................................................................................... 75
2.9.1 D20/D200 Redundancy ................................................................................................ 76
2.9.2 D.20 Link Redundancy ................................................................................................ 77
2.10 Auxiliary Equipment ......................................................................................................... 78
2.10.1 Universal Protocol Converter .................................................................................... 78
2.10.2 Data Display Panel ..................................................................................................... 79
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2.10.3 Fiber Optic Interfaces................................................................................................. 79
3. Configuration and Maintenance Software ............................................................................80
3.1 SGConfig .......................................................................................................................... 80
3.2 LogicLinx .......................................................................................................................... 80
3.3 WESMAINT ..................................................................................................................... 80
3.4 PROMAINT ...................................................................................................................... 81
3.5 68K Monitor...................................................................................................................... 81
4. Application Software ...............................................................................................................82
4.1 User Programmable Logic ................................................................................................ 82
4.2 Generation, Transmission, and Feeder Bay Automation Applications............................. 82
4.3 Distribution Automation Applications .............................................................................. 82
4.4 Communication Services Applications ............................................................................. 83
4.5 Data Logging / Storage Applications ................................................................................ 83
4.6 Data Reduction and Summarizing Applications ............................................................... 83
4.7 Data Conversion Applications .......................................................................................... 84
4.8 Other DTAs ....................................................................................................................... 84
5. Frequently Asked Questions ...................................................................................................85
5.1 What is the performance of the D20 and D200?............................................................... 85
5.2 What is the difference between the D20 and the D200? ................................................... 85
5.3 Will VME cards work with my non-VME systems? ........................................................ 85
5.4 What is the I/O capacity of a D20 system? ....................................................................... 86
5.5 What is the I/O capacity of a D200 system? ..................................................................... 86
5.6 What are the added features of the ME II Main Processor over the ME Main Processor?
86
A. Specifications and Supported Standards ..............................................................................87
B. Supported Host Protocols .......................................................................................................90
C. Supported IED Protocols........................................................................................................91
D. Power Consumption – D20 Modules .....................................................................................92
E. D20/D200 Main Processor Compatibility .............................................................................93
F. D.20 Link Installation .............................................................................................................94
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Figures
Figure 1 D20ME II Main Processor.............................................................................................. 4
Figure 2 D20EME (Ethernet/Memory Expansion) ....................................................................... 5
Figure 3 GE Integrated Substation Control System ...................................................................... 8
Figure 4 D20 System Architecture ............................................................................................. 11
Figure 5 Example D20 Rack Layout .......................................................................................... 12
Figure 6 D200 Substation Automation Platform ........................................................................ 13
Figure 7 D200 System Architecture ........................................................................................... 14
Figure 8 Example D200 Rack Layout ........................................................................................ 15
Figure 9 D20 Perspective Drawing ............................................................................................. 16
Figure 10 D200 Perspective Drawing ......................................................................................... 17
Figure 11 D20ME II Main Processor.......................................................................................... 18
Figure 12 D20EME (Ethernet/Memory Expansion) ................................................................... 19
Figure 13 D20/D200 Chassis Mounted Power Supplies............................................................. 19
Figure 14 D20A I/O Peripheral................................................................................................... 20
Figure 15 D20 Chassis (non-VME version) ............................................................................... 27
Figure 16 D20 Chassis (VME version) ....................................................................................... 27
Figure 17 D200 Chassis .............................................................................................................. 28
Figure 18 D20 Peripheral I/O Module ........................................................................................ 29
Figure 19 D20ME Block Diagram .............................................................................................. 30
Figure 20 D20/D200 Time Synchronization............................................................................... 35
Figure 21 Demodulated IRIG B Signal ...................................................................................... 35
Figure 22 D20EME (Ethernet/Memory Expansion) ................................................................... 36
Figure 23 D20 I/O Peripheral - Compression Termination ........................................................ 38
Figure 24 D20 I/O Peripheral – DB25 Termination ................................................................... 38
Figure 25 D20 I/O Peripheral – Disconnect Termination ........................................................... 39
Figure 26 D20 I/O Peripheral – Barrier Termination ................................................................. 39
Figure 27 D20 Peripheral I/O Block Diagram ............................................................................ 40
Figure 28 D20S Digital Input Peripheral .................................................................................... 44
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Figure 29 D20S Digital Input Peripheral Block Diagram .......................................................... 45
Figure 30 D20A Analog Input Peripheral ................................................................................... 48
Figure 31 D20A Analog Input Peripheral Block Diagram ......................................................... 49
Figure 32 Analog Conversion Process ........................................................................................ 49
Figure 33 Three-point Linearity Correction ............................................................................... 51
Figure 34 D20K Control Output Peripheral................................................................................ 53
Figure 35 Interposing Relays ...................................................................................................... 58
Figure 36 D20 Power Supply ...................................................................................................... 64
Figure 37 D200 Power Supplies ................................................................................................. 65
Figure 38 D.20 Link Example Configuration ............................................................................. 71
Figure 39 D.20 Communications Interface ................................................................................. 72
Figure 40 D.20 Communication Interface .................................................................................. 72
Figure 41 DCI Modes of Operation ............................................................................................ 73
Figure 42 D.20 Fiber Optic Splitter ............................................................................................ 73
Figure 43 D.20 Fiber Optic Splitter ............................................................................................ 74
Figure 44 D200 Redundancy ...................................................................................................... 76
Figure 45 Single D20/D200 with Loop Redundancy ................................................................. 77
Figure 46 Single D20/D200 with Redundant LAN .................................................................... 78
Figure 47 Data Display Panel ..................................................................................................... 79
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Tables
Table 1 D20/D200 Power Supply Replacements.......................................................................... 6
Table 2 D20/D200 Product Comparison...................................................................................... 10
Table 3 D20/D200 Power Supplies............................................................................................. 20
Table 4 D20/D200 Main Processor Specifications ..................................................................... 31
Table 5 D20/D200 Ethernet Media Types .................................................................................. 36
Table 6 D20/D200 I/O Peripherals ............................................................................................. 37
Table 7 I/O Processing ................................................................................................................. 43
Table 8 D20S Specifications ....................................................................................................... 47
Table 9 D20S Options ................................................................................................................. 47
Table 10 D20A Specifications .................................................................................................... 52
Table 11 D20A Options .............................................................................................................. 53
Table 12 D20K Specifications .................................................................................................... 56
Table 13 D20K Options .............................................................................................................. 57
Table 14 D20KI Options ............................................................................................................. 58
Table 15 D20C Daughter Boards ................................................................................................ 59
Table 16 D20C Specifications .................................................................................................... 60
Table 17 D20C Options .............................................................................................................. 61
Table 18 D20AC Features and Specifications ............................................................................ 62
Table 19 D20AC Options ........................................................................................................... 63
Table 20 D20/D200 Power Supplies........................................................................................... 65
Table 21 D20/D200 Battery Chargers ........................................................................................ 66
Table 22 D20/D200 Modems...................................................................................................... 67
Table 23 WESDAC 202/V.23 Modem Specifications ............................................................... 68
Table 24 D20/D200 Communications Links .............................................................................. 69
Table 25 D20/D200 Fiber Optic Links ....................................................................................... 79
PRPI-019-3.00-10 GE Information
GE Grid Solutions
D20/D200 Technical Overview
GE Information
PRPI-019-3.00-10
1
About this Document
Purpose
This document provides a technical overview of the D20/D200 Remote Terminal Unit (RTU).
The document is organized as follows:
• What’s New: This section highlights recent additions and enhancements that have been
made to the D20/D200 product line.
• 1. System Overview: This section provides an overview of the D20/D200 system hardware
and software.
• 2. Detailed Technical Description: This section provides a detailed description of the
D20/D200 hardware, software and operation.
• 3. Configuration and Maintenance Software: This section describes utilities and
applications that are available to help you configure, manage and maintain your D20/D200
system.
• 4. Application Software: This section describes some of the substation automation and
SCADA applications that are available for the D20/D200.
• 5. Frequently Asked Questions: This appendix presents answers to frequently asked
questions about the D20/D200.
• A. Specifications and Supported Standards: This appendix lists key industry
specifications with which the D20/D200 complies.
• B. Supported Host Protocols: This appendix lists SCADA host protocols supported by the
D20/D200.
• C. Supported IED Protocols: This appendix lists IED protocols supported by the
D20/D200.
• D. Power Consumption – D20 Modules This appendix lists nominal power consumption
for D20 components, for use in power calculations.
• E. D20/D200 Main Processor Compatibility: This appendix shows the compatibility of
D20 processors with the D20/D200 chassis.
• F. D.20 Link Installation: This appendix provides guidelines on planning and installing a
D.20 Link.
D20/D200 Technical Overview
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Who Should Use this Document?
This document is a helpful resource for utility customers or GE partners who are purchasing or
evaluating a remote terminal unit or substation control system. It is intended for readers who
have knowledge of substation automation equipment and applications.
Additional Documentation
For further information about the D20/D200 product family, refer to the following documents:
• D20/D200 Installation and Operation Guide (994-0078)
• D20, D25, iBOX Automation Applications (PRPI-048)
PRPI-019-3.00-10 GE Information
GE Grid Solutions
D20/D200 Technical Overview
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Product Support
If you need help with any aspect of your GE Grid Solutions product, you can:
• Access the GE Grid Solutions Web site
• Search the GE Grid Solutions Technical Support library
• Contact GE Grid Solutions Technical Support
GE Grid Solutions Web Site
The GE Grid Solutions Web site provides fast access to technical information, such as manuals, release
notes and knowledge base topics.
Visit us on the Web at: http://www.gegridsolutions.com
GE Technical Support Library
This site serves as a document repository for post-sales requests. To get access to the Technical Support
Web site, go to:
http://sc.ge.com/*SASTechSupport
Contact Technical Support
The GE Grid Solutions Technical Support is open 24 hours a day, seven days a week for you to
talk directly to a GE representative.
In the U.S. and Canada, call toll-free: 1 800 547 8629
International customers, please call: +1 905 927 7070
or email to multilin.tech@ge.com
Have the following information ready to give to Customer Service:
• Ship to address (the address that the product is to be returned to)
• Bill to address (the address that the invoice is to be sent to)
The Technical Support centre will provide you with a case number for your reference.
• Contact name
• Contact phone number
• Contact fax number
• Contact e-mail address
• Product number / serial number
• Description of problem
GE Information PRPI-019-3.00-10
D20/D200 Technical Overview
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What’s New
GE Grid Solutions is pleased to announce the following additions to the D20/D200 product
family:
D20ME II Main Processor
The D20ME II, the fifth generation of D20/D200 processors, builds on the increased memory,
performance and communication port speed introduced with the D20ME. Where the D20ME
supports up to eight RS-232 serial ports (one of which is reserved for the maintenance port), the
D20ME II supports:
• Seven serial ports, each of which can be configured as either RS-485 or RS-232, and
• One RS-232 maintenance port.
Each D20ME II RS-485 port can communicate with up to 32 devices and operate over distances up
to 4000 feet, without the use of repeaters (see note below). The D20ME II is backwards compatible
with VME and non-VME versions of the D20 chassis, and with the D200 chassis. For more
information, see section 2.2, Main Processor.
Note: The RS-485 port on the D20ME II provides no isolation and offers limited built-in
transient suppression. If you are using the D20ME II in an environment where longer cable runs
with larger transients are expected, installation of an external transient suppression device is
recommended to protect the RTU. In addition, GE recommends the installation of an external
transient suppression device when the RS-485 communication cable must be run to devices
located outside of the RTU cabinet containing the D20ME II. Contact Customer Service for
additional information.
Figure 1 D20ME II Main Processor
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D20/D200 Technical Overview
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D20EME (Ethernet/Memory Expansion)
The D20EME is a VME-based module that combines Ethernet support and global memory
expansion.
Figure 2 D20EME (Ethernet/Memory Expansion)
The D20EME allows VME-based D20 and D200 systems to be connected directly to any 10 MB
Ethernet-based network. Available configurations of the D20EME module include:
• Ethernet only
• Memory only
• Ethernet and Memory
For more information, see section 2.3, Ethernet/Memory Expansion (EME) Kit.
New D20/D200 I/O Peripherals
Several new I/O peripherals have been added to the D20/D200 product family.
D20AC, AC Analog Input Peri phe ra l
The D20AC, AC analog input peripheral provides AC analog computing and monitoring. It has
the following features:
• Up to 132 analog values and 18 accumulator values
• Direct AC analog inputs from current and voltage transformers for up to three 3-phase
circuits, eliminating the need for transducers and/or metering IEDs
• Integrated key substation functions such as metering, analog processing and power quality
measurement
• 3-element and 1-element (balanced system) metering
• Meter calculations include kW, kVArs, kVA, power factor, frequency, kWh, kVARh, kVAh
and symmetrical components.
• Power quality data: %THD (total harmonic distortion), 21st harmonic
For more information, see section 2.4.11 , D20AC, AC Analog Input Peripheral.
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D20/D200 Technical Overview
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D20 High-Voltage Peripherals
D20 high-voltage peripherals provide an extra level of protection for your system. They are
packaged similar to the standard D20 I/O peripherals, but the input and output circuits are
conditioned to handle higher voltages. For instance, the high-voltage version of the D20S, the
D20 SZ, supports ON thresholds of up to 220 VDC. For more information, see section 2.4, I/O
Peripheral.
D20K4Z Termination Module
The WESTERM D20K4Z is the termination panel for the D20K4Z high-voltage control output
module. As well as providing outputs that can withstand higher voltages, all of the control relays
on the D20K4Z termination module are 4-pole, momentary contact, so that both sides of an
interposer coil can be switched for additional control security. For more information, see section
2.4, I/O Peripheral.
New Power Supplies
GE Grid Solutions has introduced several new D20/D200 power supplies that provide additional
capacity and improved standards compliance. The new power supplies are designed to be drop-in
replacements for the existing D20 power supplies. As shown in the following tables, each of the
existing power supplies has two possible replacements, one with a 24 V isolated output, and one
with a 48 V isolated output. For more information, see section 2.5, D20/D200 Power Supplies
and Chargers.
Part Number
Input Voltage Range
+5 V Current
+12 V Current
-12 V Current
ISO V/I
Table 1 D20/D200 Power Supply Replacements
Supply Phased Out Drop In Replacement
580-0240 580-2006 580-2007
90-135 VAC
5 A 7 A 7 A
1 A 2 A 2 A
½ A 1 A 1 A
24 V/3 A 24 V/3 A 48 V/1½ A
100-300 VDC or
85-264 VAC
Alternative
Replacement
100-300 VDC or
85-264 VAC
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D20/D200 Technical Overview
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Part Number
Input Voltage Range
+5 V Current
+12 V Current
-12 V Current
ISO V/I
Part Number
Input Voltage
Range
+5 V Current
+12 V Current
-12 V Current
Supply Phased Out Drop In Replacement
580-0241 580-2006 580-2007
100-150 VDC
5 A 7 A 7 A
1 A 2 A 2 A
½ A 1 A 1 A
24 V/½ A 24 V/3 A 48 V/1½ A
Supply Phased Out
100-300 VDC or
85-264 VAC
Drop In
Replacement
580-0296 580-2004 580-2005
20-60 VDC 20-60 VDC 20-60 VDC
5 A 7 A 7 A
1 A 2 A 2 A
½ A 1 A 1 A
Alternative
Replacement
100-300 VDC or
85-264 VAC
Alternative
Replacement
ISO V/I
Part Number
Input Voltage
Range
+5 V Current
+12 V Current
-12 V Current
ISO V/I
24 V/½ A 24 V/3 A 48 V/1½ A
Supply Phased Out
Drop In
Replacement
Replacement
580-0297 580-2007 580-2006
100–300 VDC or
90–265 VAC
100-300 VDC or
85-264 VAC
100-300 VDC or
5 A 7 A 7 A
1 A 2 A 2 A
½ A 1 A 1 A
48 V/1½ A 48 V/1½ A 24 V/3 A
Alternative
85-264 VAC
Multiple Language Support
To meet the needs of our international customers, GE Grid Solutions has added multiple
language support to many of our software products that complement the D20/D200, including
PowerLink, SGConfig and WESMAINT. These products can be supplied in other languages by
request so that end users, such as system operators, can work efficiently in their native language.
Contact GE Grid Solutions for details.
GE Information PRPI-019-3.00-10
D20/D200 Technical Overview
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1. System Overview
This section provides an overview of the D20/D200 system hardware and software. More
detailed technical information can be found in 2. Detailed Technical Description.
The D20/D200 is the heart of GE Grid Solutions’s iSCS (Integrated Substation Control System),
as illustrated in Figure 3.
The D20/D200 provides substation server functionality in a mission-critical, substation-hardened
package. The D20/D200 has a distributed architecture for gathering data from, and controlling,
substation equipment.
The D20/D200 is available with a broad range of:
• SCADA host protocols (see C. Supported Host Protocols)
• IED protocols (see D. Supported IED Protocols)
• Communication options (see section 2.7, Communications)
• Input/output (I/O) peripheral modules (see section 2.4, I/O Peripheral)
• Operation and maintenance utilities (see 3. Configuration and Maintenance Software)
• Substation automation applications (see 4. Application Software)
Figure 3 GE Integrated Substation Control System
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D20/D200 Technical Overview
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1.1 System Architectur e
The D20/D200 is based on a distributed processing architecture that consists of one or more
main processors, peripheral I/O modules, termination panels, power supplies and
communications equipment.
The main components of a D20/D200 system are:
• D20/D200 main chassis, equipped with processor(s), power supply, RS-232/485 ports
• Input/output peripheral modules
• Auxiliary equipment
• Communications interfaces
• Application firmware
• Configuration and maintenance software
• User manuals
The main processor communicates with I/O peripherals over proprietary high-speed D.20
communications links. General-purpose RS-232 and RS-485 serial ports provide
communications with a variety of external devices, including substation equipment (IEDs, for
example), local printers, operator terminals, and SCADA computers.
Field data acquired by the D20/D200 is maintained in the system database, where it can be
accessed and processed by different application programs.
1.2 Hardware Design
The D20 and D200 hardware designs are based on:
• Distributed processing architecture which permits the sharing of I/O data processing between
the main processor and I/O peripheral processors
• CMOS logic devices for low power consumption, noise immunity and high reliability
• Advanced 32-bit Freescale™ 68030 (D20ME and ME II) and 68HC11 (D20 I/O peripherals)
single-chip microcontrollers
• Programmable logic devices (PLD) to provide flexibility and reliability, and to reduce the
physical space taken up by logic circuits
• 9600-baud maintenance port
• D.20 HDLC link over a shielded cable or a glass/plastic fiber optic cable
The modular design of the D20/D200 allows for easy expansion when you need additional
processing power or communication ports.
GE Information PRPI-019-3.00-10
D20/D200 Technical Overview
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1.3 D20/D200 Product Comparison
Table 2 summarizes the key differences between the D20 and the D200.
Table 2 D20/D200 Product Comparison
Maximum Processor
Boards
Maximum I/O Boards
VME Backplane
Maximum Serial Ports
Base Software
Applications Software
Typical Number of
Applications *
1 - non-VME chassis
3 - VME chassis
31 (without repeaters)
120 (with repeaters)
Optional Standard
7 + 1 Maintenance Port – Non-VME chassis
21 + 3 Maintenance Port – VME chassis
Standard D20 Base, CCU Base CCU Base
Full suite of GE Grid Solutions automation
application software and protocols
5 - 7 * 5 - 7 per node *
D20 D200
7
124 (without repeaters)
480 (with repeaters)
49 + 7 maintenance ports
Full suite of GE Grid Solutions
automation application
software and protocols
* Each D20/D200 application has specific memory and processing requirements. The number
of applications that can be supported is therefore system-specific, and this will be
determined during system engineering. If the applications you require are particularly
processor or memory-intensive, the number that can be supported may be less than that
shown in Table 2. Likewise, if the applications are not particularly processor or memoryintensive, the number that can be supported may be higher than that shown. Contact GE
Grid Solutions for further information.
1.4 D20 RTU Platform
There are two types of D20 RTU masters:
• Single-slot (or non-VME) – One processor
• Five-slot VME – Up to three processors plus Ethernet
The D20 hardware consists of a rack-mountable chassis containing one or more processor
boards, power supplies and modems. As shown in Figure 4, the D20 interfaces with substation
equipment either through peripheral I/O modules, or directly through RS-232, RS-485, or
Ethernet links.
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The D20 can support up to:
• Two D.20 ports, each supporting up to 31 I/O peripherals, without repeaters, and 120 I/O
peripherals, with repeaters
• 21 RS-232 or RS-485 ports (7 per processor board)
• Two Ethernet channels
Figure 4 D20 System Architecture
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1
10
20
30
42
40
Optional second 7 COM port
panel
UPC
WESDAC D20A
WESTERM D20A
DUCT PANEL
WESDAC D20S
WESTERM D20S
DUCT PANEL
WESDAC D20K
WESTERM D20K
DUCT PANEL
D20 CHASSIS
(with 7 COM ports)
An example of a D20 rack layout is shown in Figure 5.
Figure 5 Example D20 Rack Layout
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1.5 D200 Substation Automation Platform
The D200 has the computing power and expandability needed to provide substation automation
in larger substations. This is achieved through an innovative design that employs multiple D20
processors, communicating over a VME bus.
Figure 6 D200 Substation Automation Platform
The D200 has the processing power to monitor and control thousands of I/O points. It can run
sophisticated automation applications, such as our LogicLinx* programmable logic control,
without compromising performance.
GE Grid Solutions has installed D200 systems with point counts exceeding 80,000. Contact GE
Grid Solutions for further information on engineering large systems.
1.5.1 D200 Features
• RS-232/RS-485 ports support large numbers of host systems and IEDs
• VME bus architecture provides high scalability and performance for adding serial ports,
LAN options, and memory
• Data is integrated and coordinated, so different applications access a single, real-time
database
• Optional redundant configuration for high reliability at critical sites (see section 2.9,
Redundancy)
• Hardened to perform critical control functions in the substation environment, in accordance
with applicable IEEE® and IEC® standards
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D200 hardware is similar in design to the D20 hardware, but it has significantly more physical
capacity. Based on a 9-slot VME chassis, the D200, illustrated in Figure 7, can support up to:
• 4 D.20 ports, each supporting up to 31 I/O peripherals, without repeaters, and 120 I/O
peripherals, with repeaters
• 49 RS-232 or RS-485 ports (seven per D20ME or D20ME II Main Processor)
• Two Ethernet channels
Figure 7 D200 System Architecture
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FAILOVER SUPPLY
L/R SWITCH PANEL
DUCT PANEL
FAILOVER SUPPLY
D200 CCU CHASSIS
UPC
DUCT PANEL
DUAL MODEM PANEL
POWER BAR
1
10
20
30
42
40
POWER BAR
DUCT PANEL
WESDAC D20K
WESTERM D20K
DUCT PANEL
WESDAC D20K
WESTERM D20K
DUCT PANEL
WESDAC D20S
WESTERM D20S
DUCT PANEL
WESDAC D20S
WESTERM D20S
DUCT PANEL
WESDAC D20A
WESTERM D20A
DUCT PANEL
WESDAC D20A
WESTERM D20A
DUCT PANEL
BLANK PANEL
BLANK PANEL
D.20 DC INTERFACE
An example of a D200 rack layout is shown in Figure 8.
Figure 8 Example D200 Rack Layout
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D20ME or D20ME II
Main Processor (up to 2)
D20EME Ethernet
Memory Expansion
Module
Power Supply
Media Interface
Cards
Modem
5.25
in
8.5 in
19.0 in
1.6 D20/D200 RTU Hardware
1.6.1 Chassis
The D20 and D200 chassis feature a VME/Eurocard design for mounting plug-in D20 modules:
• Main Processor
• Power Supplies
• Modems
• Ethernet/Memory Expansion Module
• Media Interface Card
For convenience, maintenance ports, test points, indicators and power switches are brought out to
the front of the chassis. With VME versions of the D20 and D200 chassis, external connections
are provided through rear-mounted termination panels.
1.6.1.1 D20 Chassis
The D20 chassis is available in a single-slot Eurocard version, or a five-slot VME version. The
single-slot chassis provides one horizontal double-size Eurocard slot for mounting the D20
processor card. It is equipped with an integral D20 termination board for customer power and
field connection, and for serial-port access.
The VME chassis is equipped with five horizontal expansion slots for use with VME compatible
printed circuit boards. A separate termination board is required with the full VME chassis. The
VME D20 chassis can support up to:
• Three D20 processor cards
• Two D.20 ports, each supporting up to 31 peripherals without repeaters or 120 I/O
peripherals with repeaters
• Twenty-one RS232 or RS-485 ports (seven per main processor)
• Two Ethernet ports
Figure 9 D20 Perspective Drawing
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Power Switch / Fuse Panel
D20EME Ethernet Memory
Expansion Module
Media Interface Card
(MIC)
Modem Slots (seven if M IC
installed, eight otherwis e)
D20ME or D20ME II
Main Processors
(up to seven)
Up to four Power Supplies
10.5 in
19 in.
14 in.
1.6.1.2 D200 Chassis
The D200 chassis is a nine-slot VME chassis that can support up to:
• Seven D20 processor cards
• Four D.20 ports supporting up to 124 peripherals without repeaters and 480 I/O peripherals
with repeaters
• 49 RS-232 or RS-485 ports (seven per main processor)
• Two Ethernet ports
1.6.2 Main Processor
The design of the D20 main processor has evolved with improvements in processor performance
and electronic packaging technology. Previous versions of the D20 main processor (D20M,
D20M+ and D20M++), although no longer available, are still operating at many locations. The
current versions of the D20 main processor (D20ME and D20ME II) are described below. For a
detailed description of the main processors, see section 2.2, Main Processor.
Compatibility of the different versions of the D20/D200 main processors and chassis is listed in
E. D20/D200 Main Processor Compatibility.
Figure 10 D200 Perspective Drawing
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Figure 11 D20ME II Main Processor
1.6.2.1 D20ME
The D20ME Main Processor:
• Concentrates data from substation equipment, then processes and forwards this data to the
SCADA Master
• Receives control actions from the SCADA Master and forwards these actions to substation
equipment
• Depending on the application software supported on the unit, initiates control actions based
on the status of the substation equipment
• Processes maintenance commands received through the WESMAINT port.
The D20ME interfaces with substation equipment through:
• D20 I/O Peripherals
• RS-232 ports (eight RS-232 ports per D20ME, one of which is the maintenance port)
• Ethernet ports (two per D20/D200)
1.6.2.2 D20ME II
In addition to the D20ME functionality described above, the D20ME II main processor can be
configured to support RS-485 communications on any of seven serial ports (the eighth is
reserved for the RS-232 WESMAINT port). Through each of the RS-485 serial ports, the
D20/D200 can communicate point-to-multipoint with large numbers of end devices, out to a
distance of 4000 feet.
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1.6.3 Ethernet/Memory Expansion (EME) Kit
The D20EME is a VME-based module that combines Ethernet support and global memory
expansion.
Figure 12 D20EME (Ethernet/Memory Expansion)
The D20EME allows VME-based D20 and D200 systems to be connected directly to any
10 Mbps Ethernet-based network. Available configurations of the D20EME module include:
• Ethernet only
• Memory only
• Ethernet and Memory
For more information, see section 2.3, Ethernet/Memory Expansion (EME) Kit.
1.6.4 Power Supplies
The D20 switch-mode power supply, installed in the D20 chassis, provides power to the units
that are installed in the chassis, and up to five D20 I/O peripherals depending on the hardware
configuration. For larger systems with more than five I/O peripherals, an external power supply
is always required. D200 power supplies provide power to multiple processors and are
configured as separate +12 and 5 V supplies.
Figure 13 D20/D200 Chassis Mounted Power Supplies
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Several types of power supplies are available for D20/D200 systems:
Table 3 D20/D200 Power Supplies
Power Supply Type Features
Standard chassismounted
External Required for large numbers of I/O peripherals or modems.
Redundant Provides fail-over protection and delivers continuous power to the D20 modules and
• Chassis-mounted
• Switch-mode converters
• Provides power for all modules in the chassis, including the main processor, VME
cards, modems.
peripherals.
For a listing of available power supplies, refer to section 2.5, D20/D200 Power Supplies and
Chargers.
1.6.5 Modems
GE Grid Solutions offers a wide range of D20/D200 modems to provide communication between
the D20/D200 and SCADA host computers or remote devices, including proprietary WESDAC
modems and third-party modems from vendors such as Telenetics® and Westermo. For more
information, see section 2.6, D20 Modems.
1.7 I/O Peripherals
A range of I/O peripherals is available to provide expandable input/output functionality for the
D20/D200.
The following types of I/O peripherals meet various input/output requirements.
• D20A – 32-channel DC analog input module
• D20K – 32 control relay module
• D20KI – 8 interposer relay module (up to four D20KIs per D20K)
• D20S – 64-channel digital input module
• D20C – Combination of 16 digital inputs and 8 digital outputs. Optional 16 analog inputs, or
8 analog inputs and 8 analog outputs.
Figure 14 D20A I/O Peripheral
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• D20AC – Up to 15 direct AC inputs and 1 DC analog input
For a detailed description, see section 2.4, I/O Peripheral.
D20 I/O peripherals are available in standard and high-voltage versions. The high-voltage
versions of the peripherals are electrically more robust than the standard versions, and meet a
broader range of industry standards. These standards, which include IEC standards for
electrostatic discharge, RFI susceptibility, electrical stress, and vibration, are described in A.
Specifications and Supported Standards.
1.8 Auxiliary Equipment
GE Grid Solutions offers a selection of auxiliary equipment to support specific substation
applications, including:
• Interposing relay panels for applications requiring heavy-duty control ratings
• Universal protocol converter to interface with devices that use synchronous protocols
• Data display panel to view any data point on a built in LCD screen
• Fiber optic interfaces
For more information, see section 2.10, Auxiliary Equipment.
1.9 Communications
The D20/D200 interfaces with peripherals and external devices over several types of
communications facilities:
• RS-232
• RS-485
• D.20 Link
• Ethernet
For a detailed description, see section 2.7, Communications.
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1.10 Firmware
The D20/D200 software is based on a core set of software modules, collectively referred to as
the base system. The base system is programmed into the D20/D200 on-board flash memory as
firmware. Processing and data acquisition functionality is distributed between the I/O peripheral
processors, which have similar but smaller base systems, and the D20 main processor. The base
system for the D200 is commonly referred to as the CCU base system. For a detailed description,
see section 2.2.3 , Firmware.
D20/D200 base systems have the following features:
• System calls are available for user-generated software
• D20 peripheral firmware and processes
• Support of libraries and processes for a wide range of I/O devices
• Database manager facility (WESDAC Interface Node)
• Background system diagnostics
• Comprehensive diagnostic and maintenance facility support (WESMAINT)
1.11 Configuration and Maintenance Software
The D20/D200 is equipped with a range of maintenance utilities to assist the user in configuring,
testing and monitoring the system:
• SGConfig, a PC-based tool for configuring D20/D200 hardware and software remotely over
a network or locally through the maintenance port.
• LogicLinx, an IEC 61131-3 compliant soft logic automation tool comprising a executor
running in the D20/D200 firmware and PC-based editor for creating PLC-like programs.
• WESMAINT is a maintenance facility that resides on the D20 and D200 accessed through a
simple terminal to view collected data and system status and, for some applications, make
changes to the configuration.
• 68K Monitor, an on-board advanced diagnostic tool accessed thorough a terminal interface
and used for troubleshooting, including memory examination, dumping and editing, setting
break points, and CPU usage and process profiling.
For a detailed description, see 3. Configuration and Maintenance Software.
1.12 S ystem Doc um entation
A full suite of D20/D200 user documentation is provided with each system:
• Hardware Manual, consisting of:
− Hardware installation, operation and maintenance guides
• Software Manual, consisting of:
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