Operator control at the device
3.5 Prioritization when the power fails
PSU8600power supply systems
62
Manual, 04.2016, A5E35883207-7-76
3.5
Prioritization when the power fails
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 at 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. When the line supply
returns, the outputs that have been shut down are automatically switched-on again.
For the basic device type, the nominal buffer time is typically 15 ms; the buffer time can be
extended using additional buffer modules.
Note
The prioritization when the power fails may only be switched over when the power supply
system is in a no-voltage condition.
The switchover is made at selector switch (see operating controls) with the designation
"PRY 1"
⑤
.
When delivered, DIP switch "PRY 1" is in position "OFF" (prioritization deactivated).
Содержание SITOP BUF8600
Страница 6: ...Overview PSU8600power supply systems 6 Manual 04 2016 A5E35883207 7 76 ...
Страница 12: ...Safety instructions PSU8600power supply systems 12 Manual 04 2016 A5E35883207 7 76 ...
Страница 164: ...Engineering and remote access 7 4 SIMATIC STEP 7 PSU8600power supply systems 164 Manual 04 2016 A5E35883207 7 76 ...
Страница 240: ...Technical data 9 9 Dimension drawings PSU8600power supply systems 240 Manual 04 2016 A5E35883207 7 76 ...
Страница 246: ...Environmental conditions PSU8600power supply systems 246 Manual 04 2016 A5E35883207 7 76 ...
Страница 250: ...Environment PSU8600power supply systems 250 Manual 04 2016 A5E35883207 7 76 ...