Time Menu - S&C MIcro-AT Installation, Programming, And Operation Manual

Time Menu

Table 3. Field-Adjustable Items in the Time Menu
Field-Adjustable Item
TIME:
LOSS OF LEFT Time delay between detection of loss of voltage on left source and
SOURCE initiation of automatic loss-of-source transfer
LOSS OF RIGHT Time delay between detection of loss of voltage on right source
SOURCE
and initiation of automatic loss-of-source transfer
Time delay between return of preferred-source voltage and
RETURN OF SOURCE
initiation of automatic return-of-source transfer
Time delay that voltage must remain on load, following
LOCKOUT RESET its resumption after a momentary overcurrent, before the
Overcurrent Lockout feature is automatically reset
OC LOCKOUT
Time delay between detection of overcurrent and initiation of
PICKUP
overcurrent lockout
Time delay, during automatic loss-of-source transfer, between
opening of a source interrupter switch and closing of the other
TRANSITION DWELL source interrupter switch . Also, time delay, during automatic
return-of-source transfer, between opening of a source interrupter
switch and closing of the other source interrupter switch
The beginning of a time "window" in which an automatic return-of-
source transfer can occur; the window is adjustable from 1 minute
WINDOW BEGIN
to 3 hours . (Transfer will take place after the return-of-source time
delay has expired—provided that the time of day is within the
window selected)
WINDOW LENGTH
The time duration of the "window" in which an automatic return-of-
(24 HR)
source transfer can occur
TODAY'S DATE Month-day-year reference for event log
TIME OF DAY (24 HR) Hour-minute-second reference for event log
Factory settings are shown in boldface type .
①
STEP 5. Set the time-related operating parameters of the Micro-AT control using the
following procedure.
(a) Press the TIME menu key. The following display will appear:
(b) Press the NEXT item key. The first item of the Time menu will appear on the
first line of the dis play:
TIME: LOSS OF LEFT SOURCE
(c) Press the NEXT item key repeatedly to scroll to each item of the Time menu,
as listed in Table 3. Each item in the Time menu is field-adjustable.
Is the factory setting for each item (shown in the last column of Table 3,
in boldface type) appropriate for this installation? If not, change it.
For example, here is the display for TIME: LOSS OF LEFT SOURCE
with its factory setting, 2.00 SEC ONDS:
Description
Field Adjustment and Programming
VOLTAGE:
PRESS LAST/NEX T ITEM
TIME: LOSS OF LEFT SOURCE
2 . 00 SECONDS
Displayed at all installations
Displayed at all installations
CONFIG: SELECT RETURN
has been set for "AUTO" or
"WINDOW" return
CONFIG: LOCKOUT OPTION
has been factory-set for
"INTERNAL" or "EXTERNAL"
CONFIG: LOCKOUT OPTION
has been factory-set for
"INTERNAL"
CONFIG: DWELL TIMER has
been set for "IN"
CONFIG: SELECT RETURN has
been set for "WINDOW" return
CONFIG: SELECT RETURN has
been set for "WINDOW" return
Displayed at all installations
Displayed at all installations
CHANGE
Operating
Displayed If
SECONDS
SECONDS)
SECONDS
SECONDS)
5 SECONDS
TO 8 HOURS
(00:03:00)
SECONDS
SECONDS)
MILLISECONDS
SECONDS
SECONDS)
(hour: minute—
24-hour format)
(hour: minute—
24-hour format)
(month/day/year)
(hour: minute—
24-hour format)
S&C Instruction Sheet 515-600 27
Range
①
0 .25-240
(2.00
0 .25-240
(2.00
0 .25-240
(20.0
3-100
(50 MS)
0 .25-10
(2.00
hh:mm
(01:00)
hh:mm
(03:00)
mm/dd/yy
hh:mm