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5.3 S1 745 SETUP
PATH: SETPOINTS
S1 745 SETUP
RESETTING
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The reset function performs the following actions: all latched relays are set to the non-operated state and latched target
messages are cleared, if the initiating conditions are no longer present. Resetting can be performed in any of the following
ways: via
on the front panel while the 745 is in local mode (i.e. the Local LED indicator is on); via a logic input; via
RESET
any of the communication ports.
•
LOCAL RESET BLOCK: The 745 is defaulted to the local mode. As a result, the front panel (local)
mally operational. Select any logic input, virtual input, output relay, or virtual output which, when asserted or operated,
will block local mode, and hence the operation of the front panel
•
REMOTE RESET SIGNAL: Select any logic input which, when asserted, will (remotely) cause a reset command.
PATH: SETPOINTS
S1 745 SETUP
CLOCK
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5
The 745 includes a battery-backed internal clock that runs even when control power is lost. Battery power is used only
when the 745 is not powered. The battery is rated to last for at least 10 years continuous use. The clock is accurate to
within 1 minute per month. An IRIG-B signal may be connected to the 745 to synchronize the clock to a known time base
and to other relays. The clock performs time and date stamping for various relay features, such as event and last trip data
recording. Without an IRIG-B signal, the current time and date must be entered in a new relay for any time and date dis-
played. If not entered, all message references to time or date will display Unavailable. With an IRIG-B signal, only the cur-
rent year needs to be entered.
•
DATE: Enter the current date, using two digits for the month, two digits for the day, and four digits for the year. For
example, April 30, 1996 would be entered as "04 30 1996". If entered from the front panel, the new date will take effect
at the moment of pressing the
•
TIME: Enter the current time by using two digits for the hour in 24 hour time, two digits for the minutes, and two digits
for the seconds. The new time takes effect at the moment of pressing the
as "15 05 00", with the
•
IRIG-B SIGNAL TYPE: Select the type of IRIG-B signal being used for clock synchronization. Select "None" if no IRIG-
B signal is to be used.
5-26
Courtesy of NationalSwitchgear.com
RESETTING
ð
LOCAL RESET
ENTER
BLOCK: Disabled
ESCAPE
REMOTE RESET
ESCAPE
SIGNAL: Disabled
MESSAGE
CLOCK
ð
DATE (MM/DD/YYYY):
ENTER
01/01/1996
ESCAPE
TIME (HH:MM:SS):
ESCAPE
00:00:00
MESSAGE
IRIG-B SIGNAL TYPE:
ESCAPE
None
MESSAGE
key.
ENTER
key pressed at exactly 3:05 PM.
ENTER
745 Transformer Management Relay
Range: Enabled, Disabled
Range: Enabled, Disabled
.
RESET
Range: 1 to 12 / 1 to 31 / 1990 to 2089
~
Range: 0 to 23 : 0 to 59 : 0 to 59
Range: None, DC Shift, Amplitude Modulated
key. For example, 3:05 PM is entered
ENTER
5 SETPOINTS
5.3.5 RESETTING
key is nor-
RESET
5.3.6 CLOCK
GE Multilin
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