Basler-electric DECS-400 User Manual Page 188
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176 9369700990 Rev R
Figure 111. Single DECS-400 Without PSS (Part 2 of 3)
Switch Input 10
Disable Remote
Communication
(Input Buffer)
RS-485 Communication
Enable
(Output Buffer)
u
2
u
3
u
4
u
1
x
1
MUX
u
4
u
4
Load Compensation
Status
0=Offline; 1=Online
(Input Buffer)
OEL Option
0=Offline; 1=
Online
(Output Buffer)
Voltage Matching
0=Disabled; 1=Enabled
(Output Buffer)
Layer 1
Gate 03
Switch Input 6
Secondary Protection
Setttings Select
(Input Buffer)
Secondary Protectiion
Settings Enable
(Output Buffer)
Switch Input 7
Secondary Soft-Start
(Input Buffer)
Secondary Soft-Start
Settings Enable
(Output Buffer)
Layer 1
Gate 02
u
2
u
3
u
4
u
1
x
1
MUX
u
4
u
4
Modem Access
Enable
(Output Buffer)
FCR Mode
Active
(Input Buffer)
Output Relay
#1
FCR Mode Active
(Output Buffer)
Layer 2
Gate
02
Layer 1
Gate 01P0036-09
Switch Input 5
Secondary Limiters
(Input Buffer)
Secondary OEL
(Output Buffer)
Secondary UEL
(Output Buffer
)
u
2
u
3
u
4
u
1
x
1
MUX
u
4
u
4
Secondary SCL
(
Output Buffer)
Layer 1
Gate
02
Fixed Logic False #4
(Value
=
0)
(Input Buffer)
Secondary DECS
Enable
(
Output Buffer)
u
2
u
3
u
4
u
1
x
1
MUX
u
4
u
4
Layer 3
Gate 01
Field Flashing
Active
(Input Buffer)
Layer 4
Gate 01
Layer 3
Gate 01
Output Relay #5
Field Flashing
(Output Buffer)
Switch Input 4
<Unused>
(Input Buffer)
Switch Input 8
Secondary PID
Settings Select
(
Input Buffer)
Secondary PID
Settings Enable
(Output Buffer
)
Programmable Logic DECS-400
- INSTRUCTION MANUAL 1
- Preface 3
- 9369700990 Rev R iii 5
- DECS-400 Preface 5
- Contents 7
- General Information 13
- Generator Voltage Regulation 14
- Control Output 14
- Stability 14
- Overexcitation Limiters 16
- Minimum Excitation Limiter 16
- Stator Current Limiter 16
- Reactive Power Limiter 17
- Protective Functions 17
- Programmable Logic 17
- Model and Style Number 19
- Human-Machine Interface 21
- Menu System 22
- Editing Settings 32
- Password Protection 33
- Metering Screen 34
- Setpoint 35
- Percent of Range 35
- Alarms Message 36
- Operating Mode 37
- Functional Description 39
- Front Panel Keyboard 41
- Contact Input Circuits 41
- Digital Signal Processor 42
- Microprocessor 42
- IRIG Port 42
- Memory Circuits 43
- Digital to Analog Converter 43
- Control Output Circuits 43
- Meter Driver Circuits 43
- Relay Output Contacts 43
- Front Panel LEDs 44
- Front Panel LCD 44
- RS-232 Communication Port 44
- RS-485 Communication Ports 44
- Startup Functions 45
- Control Modes 46
- Field Overvoltage 50
- Generator Undervoltage 50
- Generator Overvoltage 50
- Loss of Sensing Voltage 50
- Power Supply Low 51
- Loss of Field (40Q) 51
- Field Overtemperature 52
- Volts per Hertz (24) 52
- MEASURED 53
- Exciter Diode Monitor (EDM) 54
- Limiter Functions 55
- Overexcitation Limiter 56
- TIME IN SECONDS 57
- Underexcitation Limiter 58
- (0.49 x kW 59
- 1.0) x kvar_level 59
- Underfrequency Limiter 59
- GENERATOR VOLTS 60
- Var Limiter 61
- Limiter Scaling 61
- Droop Compensation 61
- Reactive Differential 61
- Line Drop Compensation 61
- Autotracking 62
- Data Recording and Reporting 62
- Data Logging 63
- Power System Stabilizer 64
- PSS Theory of Operation 65
- Figure 19. Speed Signal 66
- Stabilizing 67
- Compensation 67
- SSW 5SSW 4 67
- P0026-21 68
- 12-09-04 68
- Figure 26. Output Stage 69
- BESTCOMS™ Software 71
- Communication 73
- Modem Communication 75
- System Configuration 75
- Settings 83
- Gain Settings 89
- Figure 44. PID Calculator 90
- Protection 100
- Metering 110
- Data Log 114
- 9.22936 ×= 121
- Analysis 123
- Caution 126
- 9369700990 Rev R 115 127
- DECS-400 BESTCOMS™ Software 127
- Installation 133
- 122 9369700990 Rev R 134
- Installation DECS-400 134
- 9369700990 Rev R 123 135
- DECS-400 Installation 135
- Connections 137
- 126 9369700990 Rev R 138
- Table 13. IRIG Terminals 141
- Cross-Current Compensation 144
- Typical Interconnections 145
- 134 9369700990 Rev R 146
- 9369700990 Rev R 135 147
- Communication Connections 148
- P0026-01 149
- 10-01-04 149
- Commissioning 151
- Warning! 154
- Recommended PSS Testing 159
- Maintenance 161
- Backup Battery Replacement 164
- Upgrading DECS-400 Firmware 164
- Specifications 169
- Generator Current Sensing 170
- Field Voltage and Current 170
- Field Isolation Module 170
- Contact Inputs 170
- Control Outputs 171
- Metering Outputs 172
- Contact Outputs 172
- Communication Ports 172
- Regulation Accuracy 173
- Metering Accuracy 174
- Traverse Rates 174
- Setpoint Tracking 174
- Soft Start 175
- Sequence of Events Recording 175
- Data Logging (Oscillography) 175
- Trending 175
- Limiters 175
- Underexcitation 176
- Protection Functions 177
- Type Tests 178
- Agency Certifications 178
- Real-Time Clock Battery 178
- Environment 179
- Physical 179
- Logic Schemes 182
- 9369700990 Rev R 171 183
- DECS-400 Programmable Logic 183
- 172 9369700990 Rev R 184
- Programmable Logic DECS-400 184
- 9369700990 Rev R 173 185
- 174 9369700990 Rev R 186
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- 9369700990 Rev R 183 195
- Logic Scheme Modification 196
- Logic Definitions 207
- Outputs 210
- 202 9369700990 Rev R 214
- Relay Output 1 through 6 214
- Modbus™ Communication 215
- Modbus Modes of Operation 216
- Serial Transmission Details 216
- Modbus™/TCP 218
- Preset Multiple Registers 219
- Response 220
- Data Formats 221
- Generic Types UI8 and I8 222
- Generic Types UI16 and I16 222
- Generic Types UI32 and I32 222
- CRC Error Check 223
- DECS-400 Register Tables 225
- 214 9369700990 Rev R 226
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- 9369700990 Rev R 229 241
- Revision History 243
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