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Parameters
Prewarning threshold output
current
Prewarning threshold output
current in the MANUAL
mode
Dead time for system over-
load alarm
Dead time for power supply
failure alarm
● Prioritized buffering of output 1
When the power fails, output 1 of the basic device can be prioritized so that it is still
supplied.
Prioritizing output 1 means that the longest possible buffer time is ensured for this output.
If output 1 is prioritized, all of the remaining outputs are shut down at approximately half
of the nominally available buffer time for the remaining duration of the power failure.
LEDs "ON/OFF/RST" of the outputs that have been shut down are lit red.
Outputs 2 ... n, which are shut down when the power fails as output 1 has priority, are
automatically switched-on again when the line supply returns.
For the basic device, the typical buffer time is 15 ms, additional buffer modules extend
the buffer time.
● Soft output characteristic
The output voltage decreases with increasing output current. This means that for full
output current the highest output voltage can normally no longer be attained.
● System start characteristics
In order to reduce the load on the overall SITOP PSU8600 power supply system as a
result of simultaneous switch-on current peaks of the loads at the various outputs, an on
delay between the outputs can be selected when switching on.
When the on delay is activated, the outputs are sequentially switched-on with a 25 ms or
100 ms delay time between the outputs, or load optimized.
When the variable on delay is activated, you can assign individual on delay times to the
individual outputs.
● Prewarning threshold output current
When changes are made, the prewarning threshold for the summed current allows you to
quickly check the utilization of the overall system. This is especially of interest when
expanding the system. As a consequence, using the prewarning threshold increases the
operational reliability.
Enter a value of "0 %" to deactivate the prewarning threshold.
● Prewarning threshold output current in the 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.
Power supply system PSU8600
Manual, 05.2017, A5E36758446-3-76
Value range
0 - 100 %
0 - 100 %
0 - 60 000 ms
0 - 1 000 ms
Engineering and remote access
7.7 Web server
Default setting
90 %
90 %
5000 ms
0 ms
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