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9440300990 Rev J
Contents
DECS-250
Testing ...................................................................................................................................................... 183
Real-Time Metering Analysis ................................................................................................................ 183
Graph Parameters ............................................................................................................................. 184
Frequency Response ............................................................................................................................ 185
Test Mode .......................................................................................................................................... 185
Bode Plotting ...................................................................................................................................... 185
Transfer Function ............................................................................................................................... 185
Frequency Response ......................................................................................................................... 186
Time Response ..................................................................................................................................... 186
Signal Input ........................................................................................................................................ 187
Test Signal Characteristics ................................................................................................................ 187
Step Response Analysis........................................................................................................................ 188
AVR, FCR, and FVR Tabs ................................................................................................................. 188
Var and PF Tabs ................................................................................................................................ 189
Analysis Options .................................................................................................................................... 189
Layout Tab ......................................................................................................................................... 189
Graph Display Tab ............................................................................................................................. 190
CAN Communication .............................................................................................................................. 191
Introduction ............................................................................................................................................ 191
CAN Parameters ................................................................................................................................... 191
Diagnostic Trouble Codes (DTCs) ..................................................................................................... 193
Modbus
™
Communication ...................................................................................................................... 195
Introduction ............................................................................................................................................ 195
Message Structure ............................................................................................................................. 195
Modbus Modes of Operation ................................................................................................................. 196
Modbus
™
Over Serial Line ................................................................................................................. 196
Modbus on TCP/IP............................................................................................................................. 197
Error Handling and Exception Responses ......................................................................................... 198
DECS-250 Modbus
™
via Ethernet ..................................................................................................... 198
Detailed Message Query and Response for RTU Transmission Mode ................................................ 199
Read Holding Registers ..................................................................................................................... 199
Return Query Data ............................................................................................................................. 199
Restart Communications Option ........................................................................................................ 200
Listen Only Mode ............................................................................................................................... 200
Preset Multiple Registers ................................................................................................................... 200
Preset Single Register ....................................................................................................................... 201
Data Formats ......................................................................................................................................... 202
Floating Point Data Format (Float) .................................................................................................... 202
Long Integer Data Format (Uint32) .................................................................................................... 202
Integer Data Format (Uint16) or Bit-Mapped Variables in Uint16 Format ......................................... 203
Short Integer Data Format/Byte Character Data Format (Uint8) ....................................................... 203
String Data Format (String) ................................................................................................................ 203
CRC Error Check ............................................................................................................................... 204
Secure DECS-250 Login via Modbus .................................................................................................... 204
Modbus Parameters .............................................................................................................................. 204
General .............................................................................................................................................. 204
Security .............................................................................................................................................. 205
Binary Points ...................................................................................................................................... 205
Metering ............................................................................................................................................. 214
Limiters .............................................................................................................................................. 219
Setpoints ............................................................................................................................................ 222
Global Settings ................................................................................................................................... 223
Relay Settings .................................................................................................................................... 225
Protection Settings ............................................................................................................................. 226
Gains Settings .................................................................................................................................... 228
Legacy Modbus .................................................................................................................................. 229
Содержание DECS-250
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Страница 6: ...iv 9440300990 Rev J Revision History DECS 250 ...
Страница 16: ...xiv 9440300990 Rev J Contents DECS 250 ...
Страница 20: ...4 9440300990 Rev J Introduction DECS 250 ...
Страница 28: ...12 9440300990 Rev J Power Stage DECS 250 ...
Страница 32: ...16 9440300990 Rev J Voltage and Current Sensing DECS 250 ...
Страница 40: ...24 9440300990 Rev J Synchronizer DECS 250 ...
Страница 52: ...36 9440300990 Rev J Auxiliary Control DECS 250 ...
Страница 56: ...40 9440300990 Rev J Contact Inputs and Outputs DECS 250 ...
Страница 84: ...68 9440300990 Rev J Limiters DECS 250 ...
Страница 108: ...92 9440300990 Rev J Power System Stabilizer DECS 250 Figure 85 PSS Function Blocks and Software Switches ...
Страница 114: ...98 9440300990 Rev J Power System Stabilizer DECS 250 Figure 96 PSS Parameter Settings ...
Страница 124: ...108 9440300990 Rev J Stability Tuning DECS 250 ...
Страница 126: ...110 9440300990 Rev J Mounting DECS 250 Figure 103 Overall and Projection Mounting Dimensions ...
Страница 127: ...9440300990 Rev J 111 DECS 250 Mounting Figure 104 DECS 250 Escutcheon Plate Dimensions ...
Страница 128: ...112 9440300990 Rev J Mounting DECS 250 Figure 105 Panel Cutting and Drilling Dimensions for DECS 250 Panel Mounting ...
Страница 198: ...182 9440300990 Rev J Timekeeping DECS 250 ...
Страница 210: ...194 9440300990 Rev J CAN Communication DECS 250 ...
Страница 304: ...288 9440300990 Rev J Maintenance DECS 250 ...
Страница 316: ...300 9440300990 Rev J Specifications DECS 250 ...
Страница 334: ...318 9440300990 Rev J Analog Expansion Module DECS 250 ...
Страница 341: ...9440300990 Rev J 325 DECS 250 Contact Expansion Module Figure 188 CEM 2020 Input Contact and Output Contact Terminals ...
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