Engineering and remote access
7.5 SIMATIC STEP 7
Power supply system SITOP PSU8600
206 Manual, 09.2018, A5E36758446-5-76
5. Save the hardware configuration.
You have assigned an expansion module to the basic unit. How you parameterize the
expansion module is described in Chapter "Parameterizing output 1 (Page 219)".
Assigning a buffer module
A buffer module permits brief buffering when the power fails. A SITOP PSU8600 basic unit
can be equipped with a maximum of two SITOP BUF8600 buffer modules.
BUF8600 buffer modules with electrolytic capacitors:
● Buffer time of 100 ms at 40 A, Article number 6EP4297-8HB00-0XY0
● Buffer time of 300 ms at 40 A, Article number 6EP4297-8HB10-0XY0
BUF8600 buffer modules with double-layer capacitors:
● Buffer time of 4 s at 40 A, Article number 6EP4293-8HB00-0XY0
● Buffer time of 10 s at 40 A, Article number 6EP4295-8HB00-0XY0
Note
It is possible to use different buffer modules in one system. This means, for example, that a
buffer time of 10300
ms (10000 ms + 300 ms) can be implemented. The number of buffer
modules that can be configured is limited to two.
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