Real Time Clock - GE Multilin 469 Instruction Manual

CHAPTER 5: SETTINGS
5.2.4

Real Time Clock

TIME
5.2.5 Default Messages
DEFAULT
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
PATH: SETTINGS S1 469 SETUP
REAL
[ ]
MESSAGE
The correct time and date must be entered for event recorder events to be correctly time/
date stamped. A supercap backed internal clock runs for 45 days even when power is off. It
has an accuracy of approximately ±1 minute per month. It must be periodically corrected
manually through the front panel or via the RS485 serial link clock update command. If the
approximate time an event occurred without synchronization to other relays is sufficient,
then entry of time/date from the front panel keys is adequate.
If the RS485 serial communication link is used, then all the relays can keep synchronized
time. A new clock time is pre-loaded into the 469 memory via the RS485 port by a remote
computer to each relay connected on the communications channel. After the computer
broadcasts (address 0) a "set clock" command, all relays in the system begin timing at the
same instant. There can be up to 100 ms of delay in receiving serial commands so the
clock time in each relay is ±100 ms, ± the absolute clock accuracy in the PLC or PC. Refer to
GE publication GEK-106491: 469 Communications Guide for information on programming
the time preload and synchronizing commands.
PATH: SETTINGS S1 469 SETUP
[
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
After a period of inactivity, the 469 displays default messages. Between 1 and 20 default
messages can be selected. Multiple default messages sequentially scan at a rate
determined by the
S1 469 SETUP
Any actual value can be selected for default display. In addition, up to five user
REAL TIME CLOCK
DATE (MM.DD.YYYY)
01/01/1994
TIME (HH.MM.SS):
12:00:00
DEFAULT MESSAGES
DEFAULT MESSAGES
6 OF 20 ASSIGNED
MOTOR STATUS:
Stopped
A: 0 B:
0
MOTOR LOAD:
0.00 x FLA
CURRENT UNBAL-
ANCE:
DATE: 01/01/1995
TIME: 12:00:00
MULTILIN 469
Motor
PREFERENCES DEFAULT MESSAGE CYCLE TIME
Range: 01 to 12 / 01 to 31 / 1995 to
2094
Range: 00 to 23 hrs / 00 to 59 min. / 00
to 59 sec.
Range: N/A
Range: N/A
Range: N/A
Range: N/A
Range: N/A
Range: N/A
Range: N/A
settings.
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