Siemens ST750 - Backplane Rack Assembly General Information; ST750 ELV Backplane Rack Assembly

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Page
12 of 73
Version 008
Status
Released
Last Editor Nathan Fearnhead
Date
16/06/2017
Document Name Configuration Control
Document No.
667/CC/32750/000
Copyright © Mobility 2017. All Rights Reserved. Mobility is a division of Siemens Plc
3.2 ST750ELV Backplane Rack Assembly
3.2.1 Backplane Rack Assembly General Information
The ST750ELV Backplane Rack Assembly forms the base functional unit for the ST750ELV
controllers, which are shown in Figure 1, Figure 4 and Figure 5. The three controller variants
consist of; the Gemini/Detector Swing Frame variant in a 400S, the 11” Swing Frame variant in a
400S and the 19” Swing Frame variant in a ST900. These variants are detailed in the
paragraphs below.
Figure 1
400S Small Outercase configured with Gemini/Detector Swing Frame
Warning! Figure 1 shows a Gemini² unit, full configuration details of which are detailed
later in this document. It is important that the Gemini Last Gasp Dial Battery, within the
Gemini Power Supply Unit, is orientated correctly; the battery terminal must be facing up.
If the unit is to be mounted in such a way that the battery terminals are not facing up then it is
necessary to implement certain modifications to ensure that the battery is not operating upside
down. Please refer to document 667/HB/32600/000 for the necessary modifications.
Master Switch
Assembly and
Maintenance
Sockets
Backplane
Rack
Assembly
Outercase
Back Plate
Gemini/Detector
Swing Frame, See
warning below
Mains
Transformer
Loop
Termination
PCB
SLD4 are a direct
replacement for
the ST4S shown