Data Acquisition Logic; Core Logic - Hitachi Relion 650 Series Technical Manual

Section 12
Monitoring
Present state
Open operation is in
progress
Open operation is in
progress
Close operation is in
progress
The indications for command errors will remain active for one task time only.
Commands are accepted until CB test mode is exited by activating ABORT or FINISH inputs.
12.22.6.2

Data acquisition logic

After the command request has been sent to SSCPOW, this block receives the actual command
information sent to the circuit breaker from SSCPOW and waits for the update of main and auxiliary
contact information. Upon receiving this information, the operating times can be evaluated.
12.22.6.3

Core logic

Core module is executed when data acquisition is successful following an open or close command
from SSCPOW. Once the appropriate timing information has been evaluated for primary and auxiliary
contacts, the core logic derives the actual switching times from command to NO/52a, NC/52b and
Primary contact changeover, and makes them available on the outputs LONOTIMLX, LONCTIMLX,
LOPRITIMLX (where LX is L1, L2 L3). At the same time the function increments the counter of
operations performed.
If the acquired values are considered not to be correct, they can be discarded by activating the
REJLO input. Once the REJLO command is received, CBLEARN discards the calculated temporary
time values that correspond to the last operation and decrements the number of operations
performed counter.
The calculated switching times from the last operation are accepted implicitly, by issuing a new
switching command, or explicitly, by activating the ACPTLO input. Once a new switching command
or the ACPTLO signal is received, the accepted values acquired thus far are averaged and
presented at the outputs OPAVGNOLX, OPAVGNCLX, OPAVGPRILX and CLAVGNOLX,
CLAVGNCLX, CLAVGPRILX for open and close respectively (where LX is L1, L2, or L3). If the
average values are found satisfactory, CB test mode can be completed and exited by activating the
FINISH input. Once FINISH is activated, CBLEARN exits CB test mode. Only when AvgSetSel has
been set to "setOpIsCalcAvgValues", the average values are presented at the outputs OPTIMNOLx,
OPTIMNCLx, OPTIMPRILx and CLTIMNOLx, CLTIMNCLx, CLTIMPRILx for opening and closing
respectively (where Lx is L1, L2, or L3).
342
Command received Error code for CMDERCD
Close command
Open command
Close command
During execution of a command in CB Test Mode, if for any phase, errors are
detected, learning for the current operation is stopped and an emergency trip
(instantaneous trip command to all three poles simultaneously) is issued. Identified
errors are expected to be corrected before proceeding.
Change AvgSetSel to "setOpIsCalcAvgValues" only when CB test mode has been
completed successfully!
To avoid loss of the calculated average values, make sure to keep the IED powered
up for minimum 1 hour after completing CB test mode.
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CmdErrCloseProg
NoCmdErr
NoCmdErr
1MRK 511 557-UEN Rev. A
Description for CMDERCD
Function received CLOSE
command from the user when open
operation of CB is still in progress
Command is ignored
Command is ignored
GUID-45E90641-9FE7-4EA4-8B08-E2FCCB5EEEFC v1
GUID-3CE4E298-EC09-4F39-90D0-1E504EF87D87 v1
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