Siemens SIPROTEC 7SS523 V3.2 Manual page 248

Control During Operation
Time display
Time management
232
The status is correct when text no. 1 or text no. 2 according to Table 6-3, page 231 are
displayed.
The DATE/TIME picture and also all other indications containing date and time may
have different time displays. They are determined by the value of the year and the sta-
tus identifier "not set" and "error". The possible display types and their causes are
explained in the following table.
Table 6-4 Display types of date and time
No. Display (example)
Date
**.**.****
1
04.09.1998
2
04?09.1998
3
04.09.1998
4
**?**.****
5
Display type no. 1 occurs if the real-time clock has failed to deliver a valid time during
startup. The annunciations in the event buffer have the date 01.01.1990.
Remedy: Set date and time manually (see margin heading "Time management").
Display type no. 2 occurs if the real-time clock has been set but not synchronized. This
may happen:
• temporarily during device start,
• during synchronization failure i.e. if the cyclical synchronization was interrupted for
longer than the specified tolerance time (Fault indication after).
Remedy: If you are using external synchronization, check its function and correct con-
nection.
Display type no. 3 is shown if the real-time clock has delivered a valid time value but
the time has not been set manually nor synchronized afterwards.
Remedy: Set date and time manually or wait until the cyclic synchronization takes ef-
fect.
Display type no. 4 indicates that the clock is synchronized cyclically according to its
operating mode (normal status).
Display type no. 5 occurs if the synchronization takes place via the system port and
the transferred time value has been marked "not set".
You can modify the clock:
• by manually setting the clock via the integrated operation or via DIGSI,
• by modifying the parameters for the clock management.
You can set date and time manually during operation provided this feature has been
enabled in the configuration of the clock management and after you have entered the
password no. 5 (single parameters).
Year
Time
15?07:15
Year = 1990
15?07:15
15?07:15
1990<Year<2090
15:07:15
15?07:15
Error Not Set
irrelevant
Yes No
Yes Yes
No No
No Yes
7SS52 V4 Manual
C53000-G1176-C182-1