Siemens SITOP BUF8600, Manual

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Description, device design, dimension drawing
2.3 Description of the buffer modules
PSU8600power supply systems
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Manual, 04.2016, A5E35883207-7-76
2.3 Description of the buffer modules
A buffer module SITOP BUF8600 allows the buffer time to be extended when the power
fails. An LED is used to signal the operating state of the buffer module. A maximum of two
buffer modules can be used for each basic unit. The connection to the basic unit or to the
adjacent module is established using an integrated connecting plug.
For brief power failures, the outputs of the power supply system are supplied without
interruption using the energy stored in the buffer module.
Buffer module versions
There are two BUF8600 buffer module versions available. Buffer modules with electrolytic
capacitors and buffer modules with double-layer capacitors.
Table 2- 2 BUF8600 buffer modules with electrolytic capacitors
Designation Buffer time Typical charge
time for a rated
input voltage of
400 V
Article No.
Buffer module
100 ms/40 A
100 ms at 40 A 20 s 6EP4297-8HB00-0XY0
Buffer module
300 ms/40 A
300 ms at 40 A 60 s 6EP4297-8HB10-0XY0