Basler-electric DECS-400 User Manual Page 227
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9369700990 Rev R 215
Registers
Data Description
Access
Data
Format
40211
Relay output states b0 = watchdog, b1 = on/off, b2 = Relay 1, b3 = Relay
2, b4 = Relay 3, b5 = Relay 4, b6 = Relay 5, b7 = Relay 6, b8-b15 =
unused
R
UINT16
40212 to
40250
Not used
R
Not
Supported
40251
Phase A to B rms generator voltage
R
FLOAT
40253
Phase B to C rms generator voltage
R
FLOAT
40255
Phase C to A rms generator voltage
R
FLOAT
40257
RMS bus voltage
R
FLOAT
40259
Generator phase A current rms
R
FLOAT
40261
Generator phase B current rms
R
FLOAT
40263
Generator phase C current rms
R
FLOAT
40265
Average generator line-to-line rms voltage
R
FLOAT
40267
Average generator phase current
R
FLOAT
40269
DC field voltage
R
FLOAT
40271
DC field current
R
FLOAT
40273
Auxiliary input volts
R
FLOAT
40275
Magnitude of A-B voltage fundamental phasor
R
FLOAT
40277
Magnitude of B-C voltage fundamental phasor
R
FLOAT
40279
Magnitude of C-A voltage fundamental phasor
R
FLOAT
40281
Magnitude of line A current fundamental phasor
R
FLOAT
40283
Magnitude of line B current fundamental phasor
R
FLOAT
40285
Magnitude of line C current fundamental phasor
R
FLOAT
40287
Current input for load compensation
R
FLOAT
40289
Angle between Vab and Vca
R
FLOAT
40291
Angle between Vbc and Vca
R
FLOAT
40293
Angle between Ia and Vca
R
FLOAT
40295
Angle between Ib and Vca
R
FLOAT
40297
Angle between Ic and Vca
R
FLOAT
40299
Angle between Iaux and Vca
R
FLOAT
40301
Generator real power
R
FLOAT
40303
Generator reactive power
R
FLOAT
40305
Generator apparent power
R
FLOAT
40307
Generator power factor
R
FLOAT
40309
Generator positive sequence voltage
R
FLOAT
40311
Generator negative sequence voltage
R
FLOAT
40313
Generator positive sequence current
R
FLOAT
40315
Generator negative sequence current
R
FLOAT
40317
Generator frequency
R
FLOAT
40319
Bus frequency
R
FLOAT
40321
Null Balance or tracking error
R
FLOAT
40323
Active controller output
R
FLOAT
40325
Error signal to autotracking loop
R
FLOAT
40327
Rotor temperature
R
FLOAT
40329
Shorted diode harmonic current
R
FLOAT
40331
Open diode harmonic current
R
FLOAT
40333
VAR/PF controller output
R
FLOAT
40335
PSS terminal frequency deviation
R
FLOAT
40337
PSS compensated frequency deviation
R
FLOAT
40339
PSS washed out speed deviation
R
FLOAT
40341
PSS washed out power deviation
R
FLOAT
40343
PSS mechanical power filter output
R
FLOAT
40345
PSS signal before phase lead/lag blocks
R
FLOAT
40347
PSS signal after phase lead/lag blocks
R
FLOAT
40349
PSS signal after terminal voltage limiter
R
FLOAT
40351
Final PSS output including test signal
R
FLOAT
40353 to
40399
Reserved for future C2 use
R
Not
Supported
DECS-400 Modbus™ Communication
- 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
- 9369700990 Rev R 175 187
- 176 9369700990 Rev R 188
- 9369700990 Rev R 177 189
- 178 9369700990 Rev R 190
- 9369700990 Rev R 179 191
- 180 9369700990 Rev R 192
- 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
- 9369700990 Rev R 215 227
- 216 9369700990 Rev R 228
- 9369700990 Rev R 217 229
- 218 9369700990 Rev R 230
- 9369700990 Rev R 219 231
- 220 9369700990 Rev R 232
- 9369700990 Rev R 221 233
- 222 9369700990 Rev R 234
- 224 9369700990 Rev R 236
- 9369700990 Rev R 225 237
- 226 9369700990 Rev R 238
- 9369700990 Rev R 227 239
- 228 9369700990 Rev R 240
- 9369700990 Rev R 229 241
- Revision History 243
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