Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England
Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: [email protected] Web: www.broycecontrol.com
The information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk
.
P9660-2-A
4
4
4
4
012378
•
PROGRAMMING (continued)
8A. LAST TRIPPED INFORMATION
This information is held in memory even if power is removed.
This feature allows the user to view and recall the key information relating to the last trip event and it can store up to 10 trip events. It is accessed as described in Section 7
on the previous page.
The information displayed highlights the level of current at the time the trip occurred; the triggering method (Low-set or High-set) and which relays were activated. It also
shows the elapsed time from powering the
P966
P966
P966
P9660
0
0
0
to the trip occurring and displayed against “Ttrip” as well as showing the time difference between the trip displayed and
the one previous to that. This is shown against “Tdiff”.
An example of the screen layout is shown below.
If there is only one trip event stored in the memory, the display will show “Tdiff: ----d--h--m--s” when viewed.
Trip number
(1…10)
Relays that were
activated at trip
1
…
I
O
3.60
A
Io>
R1 R
2
Ttrip: 0000d00h00m00s
Tdiff: 0000d00h00m00s
Level which was
triggered (i.e. Low-set)
Ttrip:
The elapsed time from
applying power to the
current trip
Tdiff:
The time difference
between the current trip
and the previous trip
8B. RECALLING THE LAST TRIPPED INFORMATION
If the unit has logged the maximum number of trips which can be stored, then the display will show “Tdiff: ----d--h--m--s” when trip screen 10 is viewed.
The screen will revert back to Normal operation after 1 minute if no further button presses are made.
If a trip condition occurs whilst in this mode, the screen will automatically change to display the information relating to the current status.
•
As described in Section 7, use the
to gain access to the Last Tripped Information screen. The display will show the most recent trip information as follows:
•
If more than one trip event is stored, use the
and
buttons to select the screens accordingly.
•
Press the
button to exit the screen information when finished or allow to time out automatically.
1
…
Io
5.70A
Io>
R1 R2
Ttrip: 0001d13h15m04s
Tdiff: - - - -d - -h - -m - -s
1
…
Io
6.20A
Io>
R1 R2
Ttrip: 0001d19h24m56s
Tdiff: 0000d06h09m52s
2
…
Io
5.70A
Io>
R1 R2
Ttrip: 0001d13h15m04s
Tdiff: - - - -d - -h - -m - -s
The example on the left shows the level of current recorded
on both trip events. The difference between the first
recorded trip and second was 6h 09m
6h 09m
6h 09m
6h 09m and 52s
52s
52s
52s.
8C. CLEARING THE LAST TRIPPED INFORMATION HISTORY
Once the information has been deleted, it will not be possible to recall this.
“Ttrip” information is still retained but won’t be displayed after the carrying out this
operation (See 9D)
•
Press the
button to access the relevant screen.
•
Press the
and
buttons simultaneously to delete the information.
When this is complete, the screen will show:
•
Press the
button again to exit.
No previous trip info
8D. CLEARING “Ttrip” INFORMATION
If the tripping history hasn’t been deleted, previous information will be displayed
from the last time the unit was powered up.
•
The “Ttrip” information will still be held in memory after deleting the trip
history is made and also if power is removed and re-applied. However,
when power is re-applied, the internal counter will reset and start from zero
•
Only when a new trip condition occurs will the “Ttrip” information get
updated and be displayed on the most recent screen.
Current
recorded at the
time of tripping
