Mobility and Logistics, Traffic Solutions
Sopers Lane, Poole, Dorset, BH17 7ER
Security classification
property name.
Page
16 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
3.2.2 Backplane Rack Assembly
The ST750ELV Backplane Rack Assembly is configured with the appropriate PCBs to drive the
required controller. This unit is attached to the Outercase Back Panel, as shown in Figure 1.
There is no requirement to specify the Backplane Rack Assembly separately as it contained
within the specified Outercase, chosen from Table 5. A short description of each of the
ST750ELV Backplane Rack Assembly components is provided below. Specific information on
each component should be sought from ST750ELV Handbook 667/HB/32750/000.
Backplane Board.
The Backplane Board provides connectivity between the ST750ELV Backplane Rack Assembly
PCBs and the components external to the ST750ELV Plane Rack Assembly.
With reference to Figure 6 and Figure 7, the Backplane Board houses the phase termination
blocks, to which the phase supply connection are made. The Backplane Board also houses the
termination blocks providing; Detector Power, Audible/Tactile Power and I/O connections, etc.
This unit will vary slightly in construction based whether a single or dual pedestrian controller has
been specified; the number of phase termination blocks will be double on the dual pedestrian
controller.
PL9 should be connected to the output from the mains transformer, refer to paragraph 3.5 below.
If a Gemini
2
or Stratos Outstation unit is fitted and this module is required to monitor lamp
supplies, a connection to PL12 should be made. For further information on this option please
refer to documents 667/HB/32600/000 and 667/HB/52250/000.
3.2.3 LSLS Card
The LSLS Card is plugged directly into the Backplane Board, as shown in Figure 6 and Figure 7.
It has no external connection in standard operation. The ST750ELV can be specified to operate
in three modes, and therefore will be configured with the appropriate LSLS Card. This card
provides the drives for the Helios CLS units.
• Single Pedestrian Controller (2 Phase/16 output – LSLS Card )
• Dual Pedestrian Controller (4 Phase/32 output – LSLS Card)
• Small Export Controller (8-10 Phase/32 output – LSLS Card)
3.2.4 Combined PSU / I/O Module
With reference to Figure 6, the combined PSU / I/O module generates the -48V lamp supply,
which is derived from the Mains Isolation Transformer. The I/O circuitry provides 24 Inputs and 4
Outputs, made available at the Back Board Digital Input and Relay Output Terminal Blocks. This
unit is also completely contained with the ST750ELV Backplane Rack Assembly and has no
external connections. It is plugged directly into the Backplane Board, also shown in Figure 6 and
in Figure 7.
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