Hitachi Relion 670 Series Commissioning Manual page 256

Section 11
Testing functionality by secondary injection
system, because the command function blocks are connected in a delivery-specific way between bays
and the station level and transmit.
Command and transmit function blocks included in the operation of different built-in functions must be
tested at the same time as their corresponding functions.
11.16 Remote communication
11.16.1 Binary signal transfer
Prepare the IED for verification of settings as outlined in section
To perform a test of the binary signal transfer functions, the hardware (LDCM) and binary input and
output signals to transfer must be configured as required by the application.
There are two types of internal self-supervision of the binary signal transfer:
• The I/O-circuit board is supervised as an I/O module. For example it generates FAIL if the board is
not inserted. I/O-modules not configured are not supervised.
• The communication is supervised and the signal COMFAIL is generated if a communication error is
detected.
Status for inputs and outputs as well as self-supervision status are available from the local HMI under
• Self-supervision status: Main menu /Diagnostics /Internal events
• Status for inputs and outputs: Main menu /Test /Function status , browse to the function group of
interest.
• Remote communication related signals: Main menu /Test /Function status /Communication /
Remote communication
Test the correct functionality by simulating different kind of faults. Also check that sent and received data
is correctly transmitted and read.
A test connection is shown in figure 56. A binary input signal (BI) at End1 is configured to be transferred
through the communication link to End2. At End2 the received signal is configured to control a binary
output (BO). Check at End2 that the BI signal is received and the BO operates.
Repeat the test for all the signals configured to be transmitted over the communication link.
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1MRK506371-UUS Rev. M
"Preparing the IED to verify
Line distance protection REL670
Commissioning manual
SEMOD53601-1 v1
M14951-2 v6
settings".