GE 750

CHAPTER 4: MODBUS MEMORY MAP MEMORY MAP
750/760 FEEDER MANAGEMENT RELAY – COMMUNICATIONS GUIDE 4 - 39
1B06 Underfrequency Pickup Inhibit --- --- F30 Disabled
SYNCHROCHECK (read/write setpoints)
1B10 Synchrocheck Function --- --- F38 Disabled
1B11 Dead Source Permissive --- --- F20 OFF
1B12
2
Dead Bus Maximum Voltage 0.00 to 1.25 x VT F3 0.20 x VT
1B13
2
Dead Line Maximum Voltage 0.00 to 1.25 x VT F3 0.20 x VT
1B14
2
Live Bus Minimum Voltage 0.00 to 1.25 x VT F3 0.80 x VT
1B15
2
Live Line Minimum Voltage 0.00 to 1.25 x VT F3 0.80 x VT
1B16
2
Maximum Voltage Difference 0.01 to 100.00 kV F3 2.00 kV
1B17 Maximum Angle Difference 0 to 100 ° F1 24°
1B18 Maximum Frequency Difference 0 to 5.00 Hz F3 2.00 Hz
1B19 Synchrocheck Relays --- --- F57 None
MANUAL CLOSE FEATURE BLOCKING (read/write setpoints)
1B20 Manual Close Feature Blocking Function --- --- F38 Disabled
1B21 Manual Close Relays --- --- F57 None
1B22
2
Manual Close Block Time 1 to 1000 s F1 5 s
1B23
1
Select Setpoint Group --- --- F80 Active Group
1B24
2
Overcurrent Blocking Flags --- --- F59 None blocked
1B25
2
Phase Time Overcurrent 1 Raised Pickup 0 to 100 % F1 0%
1B26
2
Neutral Time Overcurrent 1 Raised Pickup 0 to 100 % F1 0%
1B27
2
Ground Time Overcurrent Raised Pickup 0 to 100 % F1 0%
1B28
2
Negative Sequence Time Overcurrent Raised Pickup 0 to 100 % F1 0%
1B29
3
Sensitive Ground Time Overcurrent Raised Pickup 0 to 100 % F1 0%
COLD LOAD FEATURE BLOCKING (read/write setpoints)
1B40 Cold Load Pickup Feature Blocking Function --- --- F38 Disabled
1B41 Cold Load Pickup Relays --- --- F57 None
1B42 Outage Time Before Cold Load 1 to 1000 min. F1 100 min.
1B43
2
Cold Load Pickup Block Time 1 to 1000 s F1 5 s
1B44
1
Select Setpoint Group --- --- F80 Active Group
1B45
2
Overcurrent Blocking Flags --- --- F59 None blocked
1B46
2
Phase Time Overcurrent 1 Raised Pickup 0 to 100 % F1 0%
1B47
2
Neutral Time Overcurrent 1 Raised Pickup 0 to 100 % F1 0%
1B48
2
Ground Time Overcurrent Raised Pickup 0 to 100 % F1 0%
1B49
2
Negative Sequence Time Overcurrent Raised Pickup 0 to 100 % F1 0%
1B4A
3
Sensitive Ground Time Overcurrent Raised Pickup 0 to 100 % F1 0%
UNDERVOLTAGE RESTORATION (read/write setpoints)
1B60 Undervoltage Restoration Function --- --- F38 Disabled
1B61 Undervoltage Restoration Relays --- --- F57 None
1B62 Undervoltage Restoration Phases Required for Operation --- --- F41 All Three
1B63
2
Undervoltage Restoration Minimum Voltage 0.00 to 1.25 x VT F3 0.90 x V
1B64 Undervoltage Restoration Delay 0 to 10000 s F1 10 s
1B65 Undervoltage Restoration Incomplete Sequence Time 1 to 10,000 min. F1 100 min.
1B66
3
Undervoltage Restoration Source --- --- F87 Bus
UNDERFREQUENCY RESTORATION (read/write setpoints)
1B70 Underfrequency Restoration Function --- --- F38 Disabled
1B71 Underfrequency Restoration Relays --- --- F57 None
1B72
2
Underfrequency Restoration Minimum Voltage 0.00 to 1.25 x VT F3 0.90 x V
1B73
8
Underfrequency Restoration Minimum Frequency 20.00 to 65.00 Hz F3 59.90 Hz
Table 3: Modbus Memory Map (Sheet 34 of 40)
ADDR DESCRIPTION RANGE UNITS TYPE DEFAULT
1 2 3 4 5 6 7 8 9 10 11 12 13
For explanation of Table footnotes, see the Memory Map Notes at the end of this table.