Hitachi Relion 670 Series Applications Manual page 410

Section 21
Basic IED functions
The DataObject Mod of the Root LD.LNN0 can be set on the LHMI under Main menu/Test/Function
test modes/Communication/Station communication /IEC61850 LD0 LLN0/LD0LLN0:1 to On,
Off, TestBlocked,Test or Blocked.
When the setting of the DataObject Mod is changed at this level, all Logical Nodes inside the logical
device update their own behavior according to IEC 61850-7-4. The supported values of the function
block TESTMODE are described in Communication protocol manual, IEC 61850 Edition 2. When the
function block TESTMODE is in test mode the Start LED on the LHMI is turned on with steady light.
The parameter Mod of any specific function block can be configured under Main menu/Test/
Function test modes/Communication /Station Communication
The parameter Mod can be set on the LHMI to the same values as for the DataObject Mod of the
Root LD.LNN0 to On, Off, TestBlocked,Test or Blocked. For Example, Main menu/ Test/ Function test
modes/ Differential protection/GeneratorDiff(87G,3Id/I>)/ GENPDIF(87G,3Id/I>):1.
It is possible that the behavior of the function block TESTMODE is also influenced by other sources
as well, independent of the mode communicated via the IEC 61850-8-1 station bus. For example the
insertion of the test handle into the test switch with its auxiliary contact is connected to a BI on the
IED and further inside the configuration to the input IED_TEST on the function block TESTMODE.
Another example is when loss of Service Values appears, or as explained above the setting via the
LHMI.
When setting via PST or LHMI the parameterOperation of any function in an IED is set to Off, the
function is not executed and the behavior (beh) is set toOff and it is not possible to override it. When
a behavior of a function is Off the function will not execute. The related Mod keeps its current state.
The IEC 61850-7-4 gives a detailed overview over all aspects of the test mode and other states of
mode and behavior. The status of a function block behavior Beh is shown on the LHMI under the
Main menu /Test/Function status /Function group/Function block descriptive name/LN name/
Outputs .
• When the Beh of a function block is set to Test, the function block is not blocked and all control
commands with a test bit are accepted.
• When the Beh of a function block is set to Test/blocked, all control commands with a test bit are
accepted. Outputs to the process via a non-IEC 61850 link data are blocked by the function
block. Only process-related outputs on function blocks related to primary equipment are
blocked. If there is an XCBR function block used, the outputs EXC_Open and EXC_Close are
blocked.
• When the Beh of a function block is set to Blocked, all control commands with a test bit are
accepted. Outputs to the process via a non-IEC 61850 link data are blocked by the function
block. In addition, the function block can be blocked when their Beh is blocked. This can be
done if the function block has a block input.
The block status of a component is shown on the LHMI as the Blk output under the same path as for
Beh: Main menu/Test/Function status/Function group /Function block descriptive name/LN
name/Outputs. If the Blk output is not shown, the component cannot be blocked.
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To be able to set the function block TESTMODE remotely, the setting via path on LHMI
and in PST: Main menu /Configuration/Communication / Station Communication/
IEC61850-8-1 /IEC61850-8-1:1 RemoteModControl may not be set to Off. The possible
values of the parameter RemoteModControl are Off, Maintenance or All levels. The Off
value denies all access to function block TESTMODE from remote, Maintenance requires
that the category of the originator (orCat) is Maintenance and All levels allow any orCat.
When IEC 61850 Mod of a function is set to Off or Blocked, the Start LED on the LHMI
will be set to flashing to indicate the abnormal operation of the IED.
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1MRK506375-UEN Rev. N
Railway application RER670
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