Product Description
System
Page 44 of 110
HI 803 211 E Rev. 1.01.00
4.3.4
H51X Base Rack (24 VDC) I/O Level via F-PWR 02 Buffer Modules (Optional)
If the power supply units do not meet the requirements for protective separation and for
compensating voltage failures of up to 20 ms such as specified in Chapter 4.3, or the
requirements are > 20 ms, the buffer modules (F-PWR 02) can be used as an option to supply
the I/O processing modules with 24 VDC.
In the following example, the buffer module in slot 6 compensates for voltage dropouts of I/O
processing modules in the expansion racks with odd rack IDs. The buffer module in slot 7
compensates for voltage dropouts of the expansion racks with even rack IDs. In doing so,
redundant I/O levels can be assembled based on the rack IDs. If one buffer module fails,
operation of redundant racks is ensured via the remaining module. The failed buffer module
must be replaced immediately to restore the original availability. This structure corresponds to
that of the HIQuad HRS system.
Connection to redundant power supply units, see Figure 20
Connection to the LS1+/LS2+ power supply of the F-PWR 02 buffer modules in accordance with the
desired redundant structure of the I/O level
Redundant supply of the F 7133 power distribution modules, insert jumpers in accordance with the
application
Reference potential L-
Figure 24: Mono Connection to H51X Base Rack (24 VDC)
Summary of Contents for HIQuad H41X
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