Mobility, Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Security
classification Unrestricted
Page
40 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
A self test function is provided to test the internal backup battery. The following self tests
run automatically with no user input required:
Battery presence self test
•
Runs on startup and then every 3 minutes*
1
.
•
Test ensures the battery is connected and maintains a minimum voltage.
Battery capacity & on-load self test
Runs 7 days after initial startup and then every 30days*
1
*
2
•
Test results provide an indication of the capacity of the battery. These indications
allow the user to determine if the battery requires replacement.
•
The capacity test connects the battery to a test load for 60 minutes. During the test
the battery voltage is continually monitored. The test is passed if the battery
voltage remains above a minimum value throughout. If the battery voltage falls
below the minimum value, the test is stopped and failed. The length of time taken
for the test to fail is used to estimate the remaining capacity of the battery.
Therefore the capacity test result either shows a pass or the estimated remaining
fully charged capacity (where 25% suggests the battery is only capable of retaining
a quarter of the charge of a brand new battery).
•
The on-load (impedance) test compares the unloaded and loaded battery voltage.
This battery voltage drop is compared against the user configured threshold value.
The on-load test result shows a pass if the on-load voltage drop is less than the
threshold value, if not the actual on-load voltage drop is displayed.
•
The battery capacity & on-load test results notifications and thresholds are
configurable. The user can choose to turn these notification warnings off and vary
the thresholds at which the warning notifications are generated. See the ‘User
Interface Handbook for ST950 and Stratos Outstation’ 667/HU/46000/000 section
15.2.3.
The following fault/notification table and system log messages are generated from the
battery self tests and continued monitoring. These messages allow the user to determine
the health of the inbuilt battery.
Fault/Notification Table
(& system log) message
Possible Cause & Remedy
‘Card 15, Support Battery
Not Detected’
Indicates battery is not connected.
– connect battery to PSU board.
If battery is connected this indicates the battery is faulty.
– replace battery.
‘Card 15, Support Battery
Isolated’
Battery isolation switch on PSU board front panel is in the
‘OFF’ position.
– move switch to ‘ON’ position to connect the battery.
