
4 - 32
750/760 FEEDER MANAGEMENT RELAY – COMMUNICATIONS GUIDE
MEMORY MAP
CHAPTER 4: MODBUS MEMORY MAP
1723
Negative Sequence Voltage Delay
0.0 to 6000.0
s
F2
2.0 s
NEGATIVE SEQUENCE DIRECTIONAL (read/write setpoints)
1730
1
Negative Sequence Directional Function
---
---
F38
Disabled
1731
1
Neg Seq Directional Maximum Torque Angle (MTA)
0 to 359
°
F1
315°
1732
1
Minimum Polarizing Voltage
0.00 to 1.25
x VT
F3
0.05 x VT
1733
1
Negative Sequence Directional Relays
---
---
F57
None
SENSITIVE GROUND INSTANTANEOUS OVERCURRENT (read/write setpoints)
1740
3
Sensitive Ground Instantaneous Overcurrent Function
---
---
F37
Disabled
1741
3
Sensitive Ground Instantaneous Overcurrent Relays
---
---
F57
None
1742
3
Sensitive Ground Instantaneous Overcurrent Pickup
0.005 to 1.000
x CT
F70
0.100 x CT
1743
3
Sensitive Ground Instantaneous Overcurrent Delay
0.00 to 600.00
s
F3
0.00 s
1744
3
Sensitive Ground Instantaneous Overcurrent Direction
---
---
F84
Disabled
SENSITIVE GROUND TIME OVERCURRENT (read/write setpoints)
1750
3
Sensitive Ground Time Overcurrent Function
---
---
F37
Disabled
1751
3
Sensitive Ground Time Overcurrent Relays
---
---
F57
None
1752
3
Sensitive Ground Time Overcurrent Curve
---
---
F36
Ext. Inverse
1753
3
Sensitive Ground Time Overcurrent Pickup
0.005 to 1.000
x CT
F70
0.100 x CT
1754
3
Sensitive Ground Time Overcurrent Multiplier
0.00 to 100.00
---
F3
1.00
1755
3
Sensitive Ground Time Overcurrent Reset Time
---
---
F68
Instantaneous
1756
3
Sensitive Ground Time Overcurrent Direction
---
---
F84
Disabled
SENSITIVE GROUND DIRECTIONAL (read/write setpoints)
1760
3
Sensitive Ground Directional Function
---
---
F38
Disabled
1761
3
Sensitive Ground Directional Maximum Torque Angle
0 to 359
°
F1
315°
1762
3
Minimum Polarizing Voltage
0.00 to 1.25
x VT
F3
0.05 x VT
1763
3
Sensitive Ground Directional Polarizing
---
---
F50
Voltage
1764
3
Sensitive Ground Directional Relays
---
---
F57
None
RESERVED FOR MOD 010 (read/write setpoints)
1767
7
Reserved for MOD 010
1768
7
Reserved for MOD 010
1769
7
Reserved for MOD 010
176A
7
Reserved for MOD 010
176B
7
Reserved for MOD 010
RESTRICTED EARTH FAULT (read/write setpoints)
1770
8
Restricted Earth Fault Function
---
---
F39
Disabled
1771
8
Restricted Earth Fault Relays
---
---
F57
None
1772
8
Restricted Earth Fault Pickup
0.005 to 1.000
x CT
F70
0.100 x CT
1773
8
Restricted Earth Fault Delay
0.00 to 600.00
s
F3
0.00 s
BUS UNDERVOLTAGE 1 (read/write setpoints)
1780
Bus Undervoltage 1 Function
---
---
F39
Disabled
1781
Bus Undervoltage 1 Relays
---
---
F57
None
1782
2
Bus Undervoltage 1 Pickup
0.00 to 1.25
x VT
F3
0.75 x VT
1783
Bus Undervoltage 1 Delay
0.0 to 6000.0
s
F2
2.0 s
1784
Bus Undervoltage 1 Phases Required for Operation
---
---
F41
All Three
1785
2
Bus Undervoltage 1 Minimum Operating Voltage
0.00 to 1.25
x VT
F3
0.30 x V
1786
Bus Undervoltage 1 Curve
---
---
F45
Definite Time
BUS UNDERVOLTAGE 2 (read/write setpoints)
1788
Bus Undervoltage 2 Function
---
---
F39
Disabled
Table 3: Modbus Memory Map (Sheet 27 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.