131
NC20 - Manual - 01 - 2015
MEASURES, LOGIC STATES AND COUNTERS
Relays
For every output relay, the output operating state and diagnostic are available (
Read\Relays
menu):
K1 State
ON/OFF
K1 Diagnostic
OK/NOT OK
K2 State
ON/OFF
K2 Diagnostic
OK/NOT OK
......
K6 State
ON/OFF
K6 Diagnostic
OK/NOT OK
Counters
For every element two set of counters are available (Partial counters and Total counters); the partial
counters can be cleared by the user level, while the Total counter reset can be achieved with pass-
word (Session Level 1).
Every partial counter is reset to zero when ten thousand count is passed.
All partial counters can be cleared by means a single command; for this purpose the Reset partial
counters command must be issued (
Commands\Reset
submenu).
27 - Counters
37 - Counters
TD - Counters
46N - Counters
46 - Counters
49 - Counters
50/51 RMS - Counters
50/51 Fundamental - Counters
50N/51N - Counters
59 - Counters
74TCS - Counters
CB - Counters
74VT - Counters
74CT - Counters
BF - Counters
Partial counters
xx Start partial counter (xx = I>, I>>,...)
0...9999
xx Trip partial counter (xx = I>, I>>,...)
0...9999
xx Block1 partial counter (xx = I>, I>>,...)
0...9999
xx Block2 partial counter (xx = I>, I>>,...)
0...9999
Total counters
xx Start total counter (xx = I>, I>>,...)
0...9999
xx Trip total counter (xx = I>, I>>,...)
0...9999
xx Block1 total counter (xx = I>, I>>,...)
0...9999
xx Block2 total counter (xx = I>, I>>,...)
0...9999
Self test
Lower level diagnostic (MINOR) can be output or ignored; for this purpose the
MINOR Fail alarm
parameter can be set
ON
or
OFF
inside the
Set\Self test relay
submenu.
Following anomalies (MINOR) are not relevant (the protective elements continue to work):
Errors concerning the digital fault recorder.
Internal bus.
The self test information are:
Protection and controls
ON SERVICE/OUT OF SERVICE
System diagnostic
OK/NOT OK
Device diagnostic
OK/NOT OK
Program diagnostic
OK/NOT OK
Data-base boot
OK/NOT OK
Data-base runtime
OK/NOT OK
DSP boot
OK/NOT OK
DSP run-time
OK/NOT OK
Memory boot
OK/NOT OK
Memory run-time
OK/NOT OK
Data Bus heavy
OK/NOT OK
Data Bus minor
OK/NOT OK
Oscillography run-time
OK/NOT OK
PLC boot
OK/NOT OK
PLC run-time
OK/NOT OK
Protection I/O assigned verify startup
OK/NOT OK
Protection I/O assigned verify run-time major
OK/NOT OK
Protection I/O assigned verify run-time minor
OK/NOT OK
Total protection I/O assigned not-matching
0
Protection I/O assigned not-matching
PLC I/O assigned not-matching
OK/NOT OK
PLC I/O assigned not-matching run-time major
OK/NOT OK
PLC I/O assigned not-matching run-time minor
OK/NOT OK
Total PLC I/O assigned not-matching
0
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