Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security
classification Unrestricted
Page
33 of 92
Version
3
Status
Issued
Last Editor
Alan Doyle
Date
05-Oct-2017
Document Name
Stratos Outstation General and ICM Handbook Document No. 667/HB/52250/000
Copyright © Siemens plc 2014. All Rights Reserved. Mobility and Logistics is a division of Siemens Plc
4.6
The PSU Board
The PSU board provides power for the system and provides application specific hardware
modules to support specific functions. This board acts as a GSPI device to allow the CPU
board to communicate with it.
The main functions of the PSU Board are:
•
Logic rail power supplies
•
Basic 8 input + 2 output TR2523 I/O
•
Mains monitoring and Zero Cross Over timer (ZXO)
•
Lamp Supply voltage monitoring (ELV & LV)
•
Backup battery control – charging, health, safety
Figure 8 – PSU Board
Figure 9 – PSU Board Layout
Note: This board is shown with the 'front' on the right as it is mounted back to back with
the CPU board.
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2
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4
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