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Controller Chassis Operations
PAGASYS GEN II (P-SYS-G)
Federal Signal www.fedsig.com
7.0 Controller Chassis Operations
7.1 Configuration
Standard Controller Chassis configuration is included in the PAGASYS GEN II System
Manager User Manual.
7.2 Controller Card Real-Time Clock Maintenance
The Controller card includes a 3 V Lithium CR16xx coin battery cell, which supports the
processor card real-time clock when power is removed from the Controller Chassis.
Lithium CR batteries have a long shelf life, since they have a low self-discharge rate, so
a controller card can be in storage for a significant amount of time with the Mylar tab
inserted between the battery and the battery cell holder contacts and the battery will still
be usable. Follow manufacturer recommendations regarding shelf life of the battery. If
manufacturer recommendations are not available, replace the battery if stored for more
than two years.
To enable the battery for operation: The Mylar tab should be extending out of the
controller PCB SD card port, pull this Mylar tab to enable the coin battery on the
controller PCB. Once the Mylar tab is removed, the real-time clock should maintain date/
time value when system power is removed from the Controller card (set system date and
time initially after installing the controller card.
During regular maintenance of the system, replace the controller card lithium CR battery
cell if it has been in use for more than two years, and the card has been removed from
power for any significant amount of time during that period. If the PAGASYS GEN II
System Manager reports that the controller battery cell needs replacement, or if the date/
time resets when power is removed from the controller card, replace the battery cell.
7.3 Replacing the Controller Card Lithium CR Battery
To replace the controller card lithium CR battery:
1. Use the “5.0 Removing and Installing the Controller Chassis” on page 61 to
remove the controller card from the Controller Chassis.
2. Remove the Lithium CR battery cell from the battery holder.
3. Insert a new Lithium CR battery cell into the holder.
4. Use the “5.0 Removing and Installing the Controller Chassis” on page 61 to re-
install the controller card in the Controller Chassis and bring the Controller Chassis
back into service.
5. Reset system date and time after re-installing the Controller Chassis.