Siemens SITOP BUF8600, Manual

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Operator control at the device
3.7 Setting the on delay
PSU8600power supply systems
66
Manual, 04.2016, A5E35883207-7-76
3.7 Setting the on delay
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 connected to the various outputs, an on
delay between the outputs can be selected for the switch-on process.
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". For a load-optimized on delay,
after 100 ms, for the previous output n it is additionally checked as to whether the output
current lies below the selected response threshold value. Output n+1 is switched-on as soon
as this is the case. Outputs that have been shut down are not taken into account and are
skipped.
Note
The on delay time may only be switched over when the power supply system is in a no-
voltage state.
Note
The on delay includes possible expansion modules; as a consequence, it applies to all of the
outputs of the power supply system.
When the on delay is activated, the outputs are switched-
on with the following sequence 1 →
2 → 3 → 4 → … → n.
The switchover is made at selector switches (see operator controls) with the designation
"STDA"
⑦
and "STDB"
⑧
.
When delivered, DIP switches "STDA" and "STDA" are in position "OFF" (no on delay).