Human Machine Interface; Basic Ied Functions; Ethernet - ABB Relion 670 Series Product Manual

Bay control REC670
Version 2.2

19. Human machine interface

Local HMI
IEC13000239 V3 EN-US
Figure 5. Local human-machine interface
The LHMI of the IED contains the following elements
• Graphical display capable of showing a user defined
single line diagram and provide an interface for
controlling switchgear.
• Navigation buttons and five user defined command
buttons to shortcuts in the HMI tree or simple
commands.
• 15 user defined three-color LEDs.
• Communication port for PCM600.
The LHMI is used for setting, monitoring and controlling.

20. Basic IED functions

Time synchronization
The time synchronization function is used to select a
common source of absolute time for the synchronization
of the IED when it is a part of a control and a protection
system. This makes it possible to compare events and
disturbance data between all IEDs within a station
automation system and in between sub-stations. A
common source shall be used for IED and merging unit
46
AMU0600442 v15
IEC13000239-3-en.vsd
M11344-3 v11
© Copyright 2017 Hitachi Power Grids. All rights reserved
when IEC/UCA 61850-9-2LE process bus communication
is used.
Precision time protocol PTP
PTP according to IEEE 1588-2008 and specifically its
profile IEC/IEEE 61850-9-3 for power utility automation
is a synchronization method that can be used to
maintain a common time within a station. This time can
be synchronized to the global time using, for instance, a
GPS receiver. If PTP is enabled on the IEDs and the
switches that connect the station are compatible with
IEEE 1588, the station will become synchronized to one
common time with an accuracy of under 1us. Using an
IED as a boundary clock between several networks will
keep 1us accuracy on three levels or when using an HSR,
15 IEDs can be connected in a ring without losing a
single microsecond in accuracy.

21. Ethernet

Access points
An access point is an Ethernet communication interface
for single or redundant station communication. Each
access point is allocated with one physical Ethernet
port, two physical Ethernet ports are allocated if
redundant communication is activated for the access
point.
Device 1
AP1 AP2 AP3
SFP_301 SFP_302 SFP_303
IEC16000092 V1 EN-US
Figure 6. Access points, non redundant (left) and redundant
communication (right)
DHCP is available for the front port, and a device
connected to it can thereby obtain an automatically
assigned IP-address.
Access points diagnostics
The access point diagnostics function blocks (RCHLCCH,
SCHLCCH and FRONTSTATUS) supervise
communication. SCHLCCH is used for communication
over the rear Ethernet ports, RCHLCCH is used for
redundant communications over the rear Ethernet ports
and FRONTSTATUS is used for communication over the
front port. All access point function blocks include
output signal for denial of service.
Redundant communication
PRP IEC 62439-3 redundant communication
Redundant communication according to IEC 62439-3
PRP-0 and IEC 62439-3 PRP-1 parallel redundancy
1MRK 511 404-BEN N
GUID-6E5D2696-A8EE-43E7-A94B-69C3D0612127 v2
Device 1
AP1 AP2
SFP_301 SFP_302
IEC16000092-1-en.vsdx
GUID-20F64A6D-AA8C-47D7-AA7D-4810996B2FF2 v2
GUID-A90FDBA7-D4D7-4CBD-9F05-13DCC9971779 v8
Hitachi Power Grids
M11345-3 v12
AP3
SFP_303