Siemens SITOP PSU8600 - Page 215

Engineering and remote access
7.5 SIMATIC STEP 7
Power supply system SITOP PSU8600
Manual, 09.2018, A5E36758446-5-76
215
● Dead time for system output current prewarning
An alarm for the prewarning threshold for the total current is only initiated if a continuous
system overload occurs, which is longer than the set dead time.
● General prewarning threshold for individual output current in MANUAL mode
Here, it is possible to define a common threshold value for all outputs, above which an
alarm is output.
Enter a value of "0 %" to deactivate the prewarning threshold.
● Dead time for alarm message 'Input voltage outside permitted range'
A buffer mode alarm is only initiated if the power continuously fails for a time that is
longer than the set dead time.
Buffering parameters
Parameter
Value range
Default setting
Buffer component disabled via control
command
Yes/no No
Enable LONGLIFE operating mode Yes/no No
Threshold value for sufficient buffer readi-
ness
10 - 90 % 85 %
Preferred UPS module when the line sup-
ply fails
• Alternating discharge
• UPS8600[1]
• UPS8600[2]
Alternating discharge
Preferred charging mode for a system
start
Yes/no No
Enable short-time interruption at output 1
Yes/no
No
Time X: Dead time up to the beginning of
short time interruption
0 - 3 600 000 000 ms 3 000 ms
Time A: Wait time until the short-time
interruption
0 - 3 600 000 000 ms 15 000 ms
Time B: Duration of short time interruption
0 - 3 600 000 000 ms
5 000 ms
Time C: Waiting time after shutdown com-
pleted
0 - 3 600 000 000 ms 3 000 ms
Define that only output 1 is activated when
starting from a battery module.
Yes/no No
Examples for conversion
ms (milliseconds)
s (seconds)
m (minutes)
3 000
3
5 000
5
15 000
15
¼
60 000
60
1
300 000
300
5