ABB RED615 Product Manual page 10

Line Differential Protection and Control
RED615
Product version: 1.1
bance files and storing of the latest fault
records. If a Modbus TCP connection is used,
five clients can be connected to the IED
simultaneously.
When the IED uses the RS-485 bus for the
Modbus RTU/ASCII, both two- and four-wire
connections are supported. Termination and
pull-up/down resistors can be configured
with jumpers on the communication card so
external resistors are not needed. The IED
supports the following time synchronization
Supported communication interfaces and protocols
IEC 61850-8-1
MODBUS RTU/ASCII
MODBUS TCP -
• = Supported
10
methods with a time-stamping resolution of
+/- 1 ms:
Ethernet based:
• SNTP
With special time synchronization wiring:
• IRIG-B
Remote-end station time reference:
• Line differential
100BASE-TX
RJ-45
•
-
•
1MRS756500 A
RS-485 Fibre-optic
+IRIG-B
-
•
-
ST
-
•
-
ABB