ABB RELION 620 Series Technical Manual page 909

1MAC504801-IB E
620 series ANSI
Technical Manual
Table 633: X12 Optical ST connection
Group
X3
X24
Table 634: EIA-232 connections for COM0023 (X6)
Pin EIA-232
1 DCD
2 RxD
3 TxD
4 DTR
5 AGND
6 -
7 RTS
8 CTS
Table 635: EIA-485 connections for COM0023 (X6)
Pin
1
6
7
8
Table 636: EIA-485 connections for COM0023 (X5)
Pin
9
8
7
6
5
4
3
2
1
Protection relay's physical connections
Jumper connection
1–2
2–3
1–2
2–3
2-wire mode
-
-
B/-
A/+
2-wire mode
-
-
A/+
B/-
AGND (isolated ground)
IRIG-B +
IRIG-B -
-
GND (case)
Section 14
Description
Star topology
Loop topology
Idle state = Light on
Idle state = Light off
4-wire mode
Rx/+
Rx/-
Tx/-
Tx/+
4-wire mode
Rx/+
Rx/-
Tx/+
Tx/-
903