vi
745 Transformer Management Relay
GE Power Management
TABLE
OF
CONTENTS
7. SCHEME LOGIC
7.1 INTRODUCTION
7.1.1
DESCRIPTION .......................................................................................... 7-1
7.1.2
SETPOINTS............................................................................................... 7-1
7.1.3
MEASUREMENT UNITS ........................................................................... 7-1
7.1.4
TIME DELAYS ........................................................................................... 7-1
7.1.5
LED INDICATORS ..................................................................................... 7-1
7.1.6
LOGIC ........................................................................................................ 7-1
7.2 BLOCK DIAGRAMS
7.2.1
DIFFERENTIAL SCHEME LOGIC ............................................................. 7-2
7.2.2
OVERCURRENT SCHEME LOGIC........................................................... 7-8
7.2.3
FREQUENCY LOGIC .............................................................................. 7-20
8. COMMUNICATIONS
8.1 OVERVIEW
8.1.1
PROTOCOLS ............................................................................................ 8-1
8.1.2
PHYSICAL LAYER .................................................................................... 8-1
8.2 MODBUS PROTOCOL
8.2.1
DESCRIPTION .......................................................................................... 8-2
8.2.2
GE POWER MANAGEMENT MODBUS PROTOCOL .............................. 8-2
8.2.3
ELECTRICAL INTERFACE ....................................................................... 8-2
8.2.4
DATA FRAME FORMAT AND RATE ........................................................ 8-2
8.2.5
DATA PACKET FORMAT .......................................................................... 8-3
8.2.6
CRC-16 ALGORITHM................................................................................ 8-4
8.2.7
MESSAGE TIMING.................................................................................... 8-4
8.2.8
SUPPORTED FUNCTION CODES ........................................................... 8-5
8.2.9
FUNCTION CODE 03H/04H: READ ACTUAL VALUES/SETPOINTS ...... 8-6
8.2.10 FUNCTION CODE 05H: EXECUTE OPERATION .................................... 8-7
8.2.11 FUNCTION CODE 06H: STORE SINGLE SETPOINT .............................. 8-8
8.2.12 FUNCTION CODE 10H: STORE MULTIPLE SETPOINTS ....................... 8-9
8.2.13 EXCEPTION RESPONSES ..................................................................... 8-10
8.2.14 READING THE EVENT RECORDER ...................................................... 8-11
8.2.15 READING TRACE MEMORY .................................................................. 8-11
8.2.16 ACCESSING DATA VIA THE USER MAP .............................................. 8-12
8.2.17 FUNCTION CODE SUBSTITUTIONS ..................................................... 8-15
a FUNCTION CODE 03H AND 04 SUBSTITUTIONS ................................ 8-15
b FUNCTION CODE 05H SUBSTITUTION ................................................ 8-15
c FUNCTION CODE 06H SUBSTITUTION ................................................ 8-16
8.2.18 MEMORY MAP ORGANIZATION............................................................ 8-16
8.3 MODBUS MEMORY MAP
8.3.1
745 MEMORY MAP ................................................................................. 8-17
8.3.2
MEMORY MAP DATA FORMATS ........................................................... 8-74
8.4 DNP COMMUNICATIONS
8.4.1
DEVICE PROFILE DOCUMENT ............................................................. 8-92
8.4.2
IMPLEMENATION TABLE ....................................................................... 8-94
8.5 POINT LISTS
8.5.1
POINT LIST TABLES............................................................................... 8-96
9. 745 PC SOFTWARE
9.1 OVERVIEW
9.1.1
DESCRIPTION .......................................................................................... 9-1
9.1.2
HARDWARE & SOFTWARE REQUIREMENTS ....................................... 9-2
9.1.3
MENU SUMMARY ..................................................................................... 9-2
Summary of Contents for 745 TRANSFORMER MANAGEMENT RELAY
Page 30: ...2 8 745 Transformer Management Relay GE Power Management 2 3 SECURITY 2 GETTING STARTED 2 ...
Page 210: ...7 36 745 Transformer Management Relay GE Power Management 7 2 BLOCK DIAGRAMS 7 SCHEME LOGIC 7 ...
Page 322: ...9 12 745 Transformer Management Relay GE Power Management 9 3 USING 745PC 9 745 PC SOFTWARE 9 ...
Page 396: ...A 4 745 Transformer Management Relay GE Power Management A 1 FIGURES AND TABLES APPENDIXA A ...
Page 400: ...C 2 745 Transformer Management Relay GE Power Management C 1 WARRANTY INFORMATION APPENDIXC C ...
Page 406: ...vi 745 Transformer Management Relay GE Power Management ...
Page 407: ...GE Power Management 745 Transformer Management Relay NOTES ...
