Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Parallel Redundancy Protocol Status PRPSTATUS - -
Duo driver configuration DUODRV - -
17.2.6.1 Introduction
Redundant station bus communication according to IEC 62439-3 Edition 1 and IEC
62439-3 Edition 2 are available as options in 670 series IEDs. IEC 62439-3 parallel
redundant protocol is an optional quantity and the selection is made at ordering.
Redundant station bus communication according to IEC 62439-3 uses both port AB
and port CD on the OEM module.
Select IEC 62439-3 Edition 1 protocol at the time of ordering when an
existing redundant station bus DuoDriver installation is extended.
Select IEC 62439-3 Edition 2 protocol at the time of ordering for new
installations with redundant station bus.
IEC 62439-3 Edition 1 is NOT compatible with IEC 62439-3 Edition 2.
17.2.6.2 Principle of operation
The redundant station bus communication (DUODRV) is configured using the local
HMI. The settings for DUODRV are also visible in PST in PCM600.
The communication is performed in parallel, that is the same data package is
transmitted on both channels simultaneously. The received package identity from one
channel is compared with data package identity from the other channel, if the same, the
last package is discarded.
PRPSTATUS function block supervise the redundant communication on the two
channels. If no data package has been received on one (or both) channels within the
last 10 s, the output LAN-A-STATUS and/or LAN-B-STATUS is set to indicate error.
Section 17 1MRK505222-UUS C
Station communication
998
Technical reference manual
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