ABB RELION REX640 Operation Manual page 113

1MRS759118 A
REX640
Operation Manual
Table 17: Connector X8 signals
Pin No Pin name
1 GND
2 GNDC
3 NC
4 IRIG-B -
5 IRIG-B +
6 ISOL_GND
7 RS485 B1/-
8 RS485 A1/+
9 RS485 B2/-
10 RS485 A2/+
10 9
7
8
5
6
3
4
1
2
GUID-3638E235-AB2E-4571-B1EE-DF76AEA0FC36 V1 EN
Figure 90: X8 connector pinout
Table 18: LED configuration (COM1004...COM1005)
LED
X1
X2
X6
X7 TX
X8 TX
X8 TX
IRIG-B
Commissioning
Description Alternative
EARTH
GND connected to
earth via 1nF capacitor
ISOL2_GND
RS485 GND
2-wire - , COM1 4-wire TX pair, COM1
2-wire + , COM1 4-wire TX pair, COM1
2-wire - , COM2 4-wire RX pair, COM1
2-wire + , COM2 4-wire RX pair, COM1
Description
X1 LANA
X2 LANB
X6 LD
FO-UART
RS-485/COM2
RS-485/COM1
IRIG-B
Section 7
107