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DECS-200
Basler DECS-200 User Manual
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DECS-200
Setup
6-7
OEL Type
Select ei
ther Summi
ng Point or
Takeover
as the ov
erexcitati
on limit
er style. S
elect the d
esired O
EL
setting s
election op
tion. OE
L Type tab s
elections
are ill
ustrated in F
igure 6-
8.
Figure 6-
8. Settin
g Adjust
ments Scr
een, OEL T
ype Ta
b
Summing-
Point O
EL
If summing-
point over
excitatio
n limiting is
enabled, co
nfigure the
off- and on-
line O
EL settings illus
trated
in Figure
6-10.
Figure 6-9. OEL Sum
ming Tab
134
136
Table of Contents
Section 1 • General Information
9
Table of Contents
9
Features
11
Functions
11
Inputs and Outputs
11
HMI Interface
11
Introduction
11
Section 1 • General Information
11
Application
12
Introduction
12
Operating Power
12
Control Power
12
Figure 1-1. Block Diagram of Typical DECS-200 Application
12
Sensing
13
Excitation Limiters
13
External Tracking and Transfer between DECS-200 Units (Optional)
13
Internal Tracking between DECS-200 Operating Modes
13
Communication with a PC
13
Figure 1-2. Style Number Identification Chart
13
Sample Style Number
14
Model and Style Number Description
13
Specifications
14
Control Power
14
Operating Power
14
Generator Voltage Sensing
15
Generator Current Sensing
15
Bus Voltage Sensing
15
Accessory Inputs
15
Communication Ports
15
Contact Inputs
16
Contact Outputs
16
Field Output
16
Regulation
16
Parallel Compensation
17
Field Overvoltage Protection
17
Field Overcurrent Protection
17
Exciter Diode Monitor (EDM) Protection
17
Generator Undervoltage Protection
17
Generator Overvoltage Protection
18
Loss of Sensing Protection
18
Loss of Field Protection
18
Soft Start Function
18
Voltage Matching
18
On-Line Overexcitation Limiting
18
Off-Line Overexcitation Limiting
19
Underexcitation Limiting
19
Manual Excitation Control
19
Metering
19
Sequence of Event Recording (SER)
20
Data Logging (Oscillograpy)
20
Temperature Range
20
Type Tests
20
Physical
20
UL Recognition
20
CSA Certification
20
CE Compliance
20
Section 2 • Human-Machine Interface
23
Section 2 • Human-Machine Interface
25
Introduction
25
FRONT PANEL Controls and Indicators
25
Menu Navigation
26
Navigation Aids
26
Edit Sessions
26
Table 2-1. DECS-200 HMI Component Descriptions
26
Changing Settings
27
Table 2-2. Front Panel Setting Parameters
28
Password Protection
32
Table 2-3. Settings Accessible with Setpoint Access Level
32
Metering Screen
33
Metering Fields
33
Table 2-4. User-Selectable Metering Quantities
33
Setpoint Field
34
Percent-Of-Range Field
34
Mode Message Field
34
Alarm Annunciation Field
34
Alarm Message Screen
34
Table 2-5. Setpoint Field as a Function of Operating Mode
34
Table 2-6. Annunciation Messages
34
Menu Tree
35
Front Panel Operation
46
Operating Modes
46
Setpoints
46
Loop Gains
47
Table 2-7. Automatic Stability Range Gain Settings Index
47
Controller Gains
48
Metering
48
Protection
48
Limiters
49
System Parameters
50
General Settings
53
Section 3 • Functional Description
55
Function Block Descriptions
57
Contact Input Circuits
58
Start
58
Stop
58
AVR (Automatic Voltage Regulation)
58
FCR (Field Current Regulation)
58
Raise
58
Lower
58
PRE-P (Pre-Position)
58
M (Unit/Parallel)
58
K (Var/Power Factor Enable)
59
SECEN (Secondary Enable)
59
ALRST (Alarm Reset)
59
Analog Inputs
59
Generator Voltage Sensing Ranges
59
Generator Voltage
59
Bus Voltage
60
Phase B Line Current
60
Cross-Current Loop Input
60
Accessory Input (Remote Setpoint Control)
60
Field Current and Field Voltage
60
Operating Power
60
Control Power
60
Analog-To-Digital Converter (ADC)
61
Microprocessor
61
Digital Signal Processor (DSP)
61
Operational Settings
61
Watchdog Timer
61
Real-Time Clock
61
Relay Output Circuits
61
Programmable Outputs
61
Watchdog Output
62
On/Off Output
62
Communication
62
Memory Circuits
62
Protection Functions
63
Field Overvoltage
63
Field Overcurrent
63
Generator Overvoltage
64
Loss of Sensing
64
Below 10 Hertz
64
Loss of Field
64
Exciter Diode Monitor (EDM)
64
Exciter Diode Monitor Settings
65
Introduction
57
Section 3 • Functional Description
57
Soft Start
65
Limiter Functions
66
Underfrequency Limiter
66
Volts Per Hertz Ratio Limiter
67
Overexcitation Limiter (OEL)
67
Summing Point OEL
67
Takeover OEL
68
On-Line/Off-Line OEL Options
68
Underexcitation Limiter
69
Stator Current Limiting
69
Data Logging and Reporting
70
Sequence of Events Reporting
70
System Contact Input State Changes
70
System Output State Changes
70
System Alarm State Changes
70
Changes in State of System Status
70
Oscillography
71
Internal Variables
71
Droop and Line-Drop Compensation
70
Section 4 • Installation
73
General
75
Mounting
75
Product Registration
75
Section 4 • Installation
75
Connections
80
Right-Hand Panel Connections
80
Front Panel Connections
81
Left-Hand Panel Connections
81
Control Power
82
Operating Power
82
Chassis Ground
82
Generator and Bus Voltage Sensing
82
Generator Current Sensing
83
Accessory Input
84
Contact Inputs
84
Output Contacts
85
Field Output
85
Com 2 Connections
85
Section 5 • Bestcoms Software
89
Installation
91
Operating Requirements
91
Installing BESTCOMS
91
Connecting the DECS-200 and PC
91
Introduction
91
Section 5 • Bestcoms Software
91
Starting Bestcoms
91
Establishing Communication
91
Configuring the Communication Ports
92
Configuring the Real-Time Clock
92
Assigning Identification Labels
93
Creating a Password
93
Changing Settings
93
Sending Settings to the DECS-200
93
Retrieving DECS-200 Settings
93
Saving Settings in DECS-200 Memory
93
System Settings
94
System Configuration
94
Setting Adjustments
98
Control Gain
105
Analysis
107
Protection/Relay
111
Data Log
115
Metering
120
Saving, Printing, and Opening Files
122
Saving Files
122
Printing Files
123
Opening/Uploading Files
123
Pid Window
123
PID Calculations Based on Input Values
124
Adding to PID List
125
Removing a PID List Record
125
Retrieving Existing Data from PID List
125
Terminating Communication
125
Section 6 • Setup
127
Section 6 • Setup
129
Equipment Required
129
System Data
129
Settings Entry
129
System Configuration Screen
129
Setting Adjustments Screen
132
Protection/Relay Screen
138
Off-Line Tests - Turbine Not Spinning
141
Start/Stop Tests
141
Control Gain Settings
142
PID Settings
142
Off-Line Tests - Turbine Spinning
142
FCR Mode
142
Excitation Performance Evaluation
145
Off-Line Excitation Limiter Operation
145
Limit and Protection Check
146
Parallel Operation, Generator on Line
146
Conclusion of Testing
148
Section 7 • Modbus™ Communication
149
Decs-200 Modbus Protocol
151
Introduction
151
Message Structure
151
Device Address Field
151
Function Code Field
152
Data Block Field
152
Error Check Field
152
Section 7 • Modbus Communication
151
Serial Transmission Details
152
Message Framing and Timing Considerations
153
Error Handling and Exception Responses
153
Communications Hardware Requirements
153
Detailed Message Query and Response
154
Read Holding Registers
154
Preset Multiple Registers
154
Preset Single Register (Write Single Holding Register)
155
Error Response
155
Loop Back Diagnostic Test (FC= 8) with Diagnostic Sub-Function, Return Query Data
156
Loop Back Diagnostic Test with Diagnostic Sub-Function, Restart Communications Option
156
Loop Back Diagnostic Test with Diagnostic Sub-Function, Force Slave to Listen Only Mode
156
Data Formats
156
Generic Types UI16 and I16
157
Generic Types UI32 and I32
157
Floating Point (R23_32) Data Format
158
Crc Error Check
159
Decs-200 Modbus Register Space
159
Decs-200 Register Table
160
Holding Registers for Information Category C1
160
Holding Registers for Information Category C2
162
Holding Registers for Information Category C3
164
Holding Registers for Information Category C4
164
Holding Registers for Information Category C5
165
Holding Registers for Information Category C6
167
Holding Registers for Information Category C7
169
Holding Registers for Information Category C8
170
Holding Registers for Information Category C9
171
Holding Registers for Information Category C10
172
Holding Registers for Information Category C11
173
Holding Registers for Information Category C12
173
Holding Registers for Information Category C13
176
Section 8 • Maintenance
179
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Basler DECS-200 Specifications
General
Brand
Basler
Model
DECS-200
Category
Controller
Language
English
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