Functions
2.2 Merging Unit
SIPROTEC, 7SC805, Manual
C53000-G1140-C380-1, Release date 05.2014
35
2.2.2
Setting Notes
The Merging Unit device 7SC805 offers two kinds of configuration of the communication parameters
controlled by the parameter
459
SysCon MU Configuration
.
If
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
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
408
VLAN Priority
informs the priority of VLAN.
Pulse Per Second Delay
At address
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 us PPS delay should be considered.
Quality Bit
You can find all the settings of Quliaty bit in the setting table.
Parameter
440A
Overflo Quality
,
442A
BadRef Quality
,
443A
Oscill Quality
,
445A
OldData Quality
,
446A
Inconsi
Quality
,
449A
OpeBloc Quality
are fixed as
False
compliant to IEC61869.
At the address
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
444A
Failure Quality
: this identifier informs that the supervision function has detected an internal
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
447A
Inaccu Quality
: this identifier shall indicate that the value does not meet the stated accu-
racy of the source. If
Calibration is not done
, 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
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
450A
Source Quality
.
At present, only fixed setting
Process
is supported.
At the address
451A
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
452
SmvID
is included in the sample value telegram control block
At Address
455A
OptFlds refTime
information, it is checked whether the field refresh time is contained in
IEC61850-9-2 telegram.
