The Denial of Service functions DOSLAN1 and DOSFRNT are
included to limit the inbound network traffic. The
communication can thus never compromise the primary
functionality of the IED.
The event system has a rate limiter to reduce CPU load. The
event channel has a quota of 10 events/second after the initial
30 events/second. If the quota is exceeded the event channel
transmission is blocked until the event changes is below the
quota, no event is lost.
All communication connectors, except for the front port
connector, are placed on integrated communication modules.
The IED is connected to Ethernet-based communication
systems via the fibre-optic multimode LC connector(s)
(100BASE-FX).
The IED supports SNTP and IRIG-B time synchronization
methods with a time-stamping accuracy of ±1 ms.
• Ethernet based: SNTP and DNP3
• With time synchronization wiring: IRIG-B
The IED supports IEC 60870-5-103 time synchronization
methods with a time stamping accuracy of ±5 ms.
Table 1. Supported station communication interfaces and protocols
Protocol
Ethernet
Serial
100BASE-FX LC
Glass fibre (ST connector)
EIA-485
IEC 61850–8–1
●
-
-
DNP3
●
●
●
IEC 60870-5-103
-
●
●
● = Supported
Horizontal communication via GOOSE for interlocking
GOOSE communication can be used for exchanging
information between IEDs via the IEC 61850-8-1 station
communication bus. This is typically used for sending
apparatus position indications for interlocking or reservation
signals for 1-of-n control. GOOSE can also be used to
exchange any boolean, integer, double point and analog
measured values between IEDs.
DNP3 protocol
DNP3 (Distributed Network Protocol) is a set of
communications protocols used to communicate data between
components in process automation systems. For a detailed
description of the DNP3 protocol, see the DNP3
Communication protocol manual.
IEC 60870-5-103 communication protocol
IEC 60870-5-103 is an unbalanced (master-slave) protocol for
coded-bit serial communication exchanging information with a
control system, and with a data transfer rate up to 19200 bit/s.
In IEC terminology, a primary station is a master and a
secondary station is a slave. The communication is based on a
point-to-point principle. The master must have software that
can interpret IEC 60870-5-103 communication messages.
IEC 60870-5-103 protocol can be configured to use either the
optical serial or RS485 serial communication interface on the
COM03 or the COM05 communication module. The functions
Operation selection for optical serial OPTICALPROT and
Operation selection for RS485 RS485PROT are used to select
the communication interface.
The function IEC60870-5-103 Optical serial communication,
OPTICAL103, is used to configure the communication
parameters for the optical serial communication interface. The
function IEC60870-5-103 serial communication for RS485,
RS485103, is used to configure the communication parameters
for the RS485 serial communication interface.
IEC 62439-3 Parallel Redundancy Protocol
Redundant station bus communication according to IEC
62439-3 Edition 2 is available as option in the Customized 650
Ver 1.3 series IEDs, and the selection is made at ordering.
Redundant station bus communication according to IEC
62439-3 Edition 2 uses both ports LAN1A and LAN1B on the
COM03 module.
Select COM03 for redundant station bus
according to IEC 62439-3 Edition 2 protocol,
at the time of ordering.
IEC 62439-3 Edition 2 is NOT compatible
with IEC 62439-3 Edition 1.
Transformer protection RET650
1MRK 504 137-BEN B
Product version: 1.3
26
ABB
Содержание ret650
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