E.34
SEL-787 Relay
Instruction Manual
Date Code 20081022
Modbus RTU Communications
Modbus Register Map
Negative-Sequence Overvoltage
499 (R/W)
NSEQ OV LVL1 EN
0
1
0
599
0 = N
1 = Y
500 (R/W)
NSEQ OV LEVEL
V
125
3000
2400
0.1
600
501 (R/W)
NSEQ OV DELAY
sec
0
1200
5
0.1
601
502 (R/W)
NSEQ OV LVL2 EN
0
1
0
602
0 = N
1 = Y
503 (R/W)
NSEQ OV LEVEL
V
125
3000
2400
0.1
603
504 (R/W)
NSEQ OV DELAY
sec
0
1200
50
0.1
604
505–514 (R)
Reserved
0
0
0
605–614
Volts/Hertz
515 (R/W)
ENABLE V/HZ PROT
0
1
1
615
0 = N
1 = Y
516 (R/W)
XFMR WDG CONN
0
1
1
616
0 = DELTA
1 = WYE
517 (R/W)
LVL1 V/HZ PICKUP
%
100
200
105
1
617
518 (R/W)
LVL1 TIME DLY
sec
4
40000
100
0.01
618
519 (R/W)
LVL2 CURVE SHAPE
0
4
2
619
0 = OFF
1 = DD
2 = ID
3 = I
4 = U
520 (R/W)
LVL2 INV-TM PU
%
100
200
105
1
620
521 (R/W)
LVL2 INV-TM CURV
0
2
2
621
0 = 0.5
1 = 1.0
2 = 2.0
522 (R/W)
LVL2 INV-TM FCTR
sec
1
100
1
0.1
622
523 (R/W)
LVL2 PICKUP 1
%
100
200
175
1
623
524 (R/W)
LVL2 TIME DLY 1
sec
4
40000
300
0.01
624
525 (R/W)
LVL2 PICKUP 2
%
101
200
176
1
625
526 (R/W)
LVL2 TIME DLY 2
sec
4
40000
300
0.01
626
527 (R/W)
LVL2 RESET TIME
sec
0
40000
24000
0.01
627
Power Elements
528 (R/W)
ENABLE PWR ELEM
0
2
0
628
0 = N
1 = 3P1
2 = 3P2
529 (R/W)
ENABLE 3PWR1P
0
1
0
629
0 = N
1 = Y
530 (R/W)
3PH PWR ELEM PU
VA
2
65000
20000
0.1
630
Table E.32
Modbus Register Map
a
(Sheet 13 of 38)
Modbus Register
Address
b
Name / Enums
Units
Min
Max
Def
Scale
Factor
DeviceNet
Parameter
Numbers
Summary of Contents for SEL-787
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