
Functions
2.2 Merging Unit
SIPROTEC, 6MU805, Manual
C53000-G1140-C380-5, Release date 06.2018
35
2.2.2
Setting Notes
The Merging Unit device 6MU805 offers two kinds of configurations of the communication parameters
controlled by the parameter 0
459
SysCon MU Configuration
.
If 0
459
SysCon MU Configuration
is set to
Enabled
,
some of the following parameters are not displayed at device
HMI and DIGSI4 and must be configured via the IEC61850 CID-File with the System-configurator (SysCon PC-
tool).
Virtual LAN ID
Address 0
407
VLAN ID
represents the virtual local area network identifier, which shall be set by configuration.
If it is not used, it shall be set to
Zero
.
Virtual LAN Priority
Address 0
408
VLAN Priority
informs the priority of VLAN.
Pulse Per Second Delay
At address 0
438
PPS Delay
, you can define the delay time for PPS. With this parameter, different runtime of PPS
signals are considered because of the different distance of the MU to the time signal generator. For 1000m fiber
optics 4.7
s PPS delay should be considered.
Quality Bit
You can find all the settings of quliaty bit in the setting table.
Parameter 0
440A
Overflo Quality
, 0
442A
BadRef Quality
, 0
443A
Oscill Quality
, 0
445A
OldData Quality
, 0
446A
Inconsi Quality
, 0
449A
OpeBloc Quality
are fixed as
False
compliant to IEC61869.
At the address 0
441A
OutRang Quality
: this bit indicates a quality issue that the attribute to which the quality
has been associated is beyond a predefined range of values. In MU, if this bit is
True
, the validity shall be also
set to
invalid
. This setting can also be used for test purpose. The default value for this parameter should be
Set
By MU
.
At the address 0
444A
Failure Quality
: this identifier informs that the supervision function has detected an inter-
nal or external failure. When VT failure happens or the AD converter has problems or when the PPS comes
again but before the PPS synchronized after PPS lost, this quality bit will be set as
True
. The default setting for
this parameter should be
Set By MU
.
At the address 0
447A
Inaccu Quality
: this identifier shall indicate that the value does not meet the stated ac-
curacy of the source. If
calibration is not d
one
, this bit will be set as
True
. The default value for this parameter
should be
Set By MU.
The setting of Test Quality bit in IEC61850-9-2 telegram can be controlled at Address 0
448A
Test Quality
. This
setting can be
True/False
or
Set By MU
.
Set By MU
option means the quality bit can be controlled via binary
inputs.
The setting of Source Quality bit in IEC61850-9-2 telegram can be controlled at Address 0
450A
Source Quality
.
At present, only fixed setting
Process
is supported.
At the address
0451A
Valid Quality
: normally the validity should be
Good
, any reason listed in the detailed
quality attributes will cause the validity to
Invalid
or
Questionable
. The default value for this parameter should
be
Set By MU
. But if the you do not select the
Set By MU
option, the Validity will not be affected by the detailed
quality bits.
The address 0
452
SVID
is included in the sample value telegram control block