Setting Guidelines - ABB RET670 Applications Manual

Section 4
Station communication
4.3.2
4.3.2.1
820

Setting guidelines

There are several settings related to the Merging Units in local HMI under:
Main menu\Settings\General Settings\Analog Modules\Merging Unit x
where x can take the value 1,2 or 3.
Specific settings related to the IEC 61850-9-2LE communication
The process bus communication IEC 61850-9-2LE have specific settings, similar to the
analog inputs modules.
Besides the names of the merging unit channels (that can be edited only from PCM600,
not from the local HMI) there are important settings related to the merging units and
time synchronization of the signals:
When changing the sending (MU unit) MAC address, a reboot of the
IED is required.
If there are more than one sample group involved, then time synch is mandatory and
the protection functions will be blocked if there is no time synchronization.
SmpGrp – this setting parameter is not used
CTStarPointx this parameter is currently not used. To specify direction to or from
object, use setting Negation on the pre-processing groups (SMAI).
AppSynch: If this parameter is set to Synch and the IED HW-time synchronization is
lost or the synchronization to the MU time is lost, the protection functions in the list
240 will be blocked and the output SYNCH will be set.
SynchMode: marks how the IED will receive the data coming from a merging unit:
• if it is set to NoSynch, then when the sampled values arrive, there will be no check
on the "SmpSynch" flag
• If it is set to Operation, the "SmpSynch" flag will be checked all time.
• setting Init, should not be used
The rest of the setting are explained in table 241.
1MRK504116-UUS C
Application manual