Recorded Values Of The Latest Eight Faults - Allen-Bradley Rockwell Automation 857 User Manual

Table 3.3 – Parameters of the Overcurrent Stages I>>, I>>> (50/51)
Parameter Value
-
Blocked
Status
Start
Trip
SCntr
TCntr
SetGrp 1 or 2
-
DIx
SGrpDI
VIx
LEDx
VOx
Off
On
Force
ILmax
I>>, I>>>
I>>, I>>>
t>>, t>>>
For details of setting ranges see "Protection Stages".
Set = An editable parameter (password needed)
C = Can be cleared to zero
F = Editable when force flag is on

Recorded Values of the Latest Eight Faults

Detailed information is available on the eight latest faults: Time
stamp, fault type, fault current, load current before the fault, elapsed
delay and setting group.
Table 3.4 – Recorded Values of the Overcurrent Stages (8 latest faults) I>, I>>, I>>> (50/51)
Parameter Value
yyyy-mm-dd
hh:mm:ss.ms
Type
1-N
2-N
3-N
1-2
2-3
3-1
1-2-3
Flt
Load
EDly
SetGrp 1
2
Unit Description
Current status of the stage
Cumulative start counter
Cumulative trip counter
Active setting group
Digital signal to select the active setting group
None
Digital input
Virtual input
LED indicator signal
Virtual output
Force flag for status forcing for test
purposes. This is a common flag for all
stages and output relays, too. Automatically
reset by a 5-minute timeout.
A The supervised value. Max. of IL1, IL2 and IL3
A Pick-up value scaled to primary value
xImode Pick-up setting
s Definite operation time
Unit
Time stamp of the recording, date
Time stamp, time of day
Fault type
Ground fault
Ground fault
Ground fault
Two-phase fault
Two-phase fault
Two-phase fault
Three-phase fault
xImode Maximum fault current
xImode 1 s average phase currents before the fault
% Elapsed time of the operating time setting. 100% = trip
Active setting group during fault
3-9
Protection Functions
Note
F
F
C
C
Set
Set
Set
Set
Set
Description
857-UM001A-EN-P – July 2009