S&C Instruction Sheet 461-504 87
Using TripSaver
®
II Service Center Configuration Software Version 1.8
Recloser
normal state
10-second
cancellation
window
20-second walk-
away window
Recloser breaks
load and
drops open
Operate lever
X times within
Y-second
window
Triggering condition not met
Triggering
condition
met
Any lever movement
LMO
executes
During the walk-away period, the operator can no longer cancel the open operation.
At the end of the walk-away period, the TripSaver II recloser will open the vacuum-
interrupter contacts to interrupt the load current, then drop open and reclose the con-
tacts after the tilt sensor indicates a completed drop-open function. See Figure 118 for
a flowchart of the
LMO
feature sequence.
Figure 118. The LMO feature sequence.
It is important to keep in mind the following:
• When the
LMO
feature is enabled, a new LCD screen titled “LMO” will be automati-
cally displayed under the LCD scrolling screen sequence as its first scrolling screen,
with the X value shown on the left and the Y value shown on the right. This screen is
not displayed when the
LMO
feature is disabled.
• The mode selector operation counter registers a single movement starting either in
the
Up
or
Down
position of the lever as an operation. Moving the lever down and then
back up would be counted as two operations.
• If the operation time window (Y) expires before (X) lever operations are completed,
the command sequence will be terminated. The operation counter will reset to zero;
any additional lever operations will begin the count toward a new command sequence.
• If the TripSaver II recloser detects a fault while a user is performing the
LMO
com-
mand, the command sequence will reset before the recloser trips, and the protection
sequence of the TripSaver II recloser will operate normally. The
Reclose/Non-
Reclose
function will be selected based on the operating lever position at the time the
TripSaver II recloser trips. Figures 119 through 123 on page 88 show how the LCD
screens appear.
• LMO events will be recorded in the Event log.