Table of Contents
Hardware Features
Compact Series Backup Batteries
26 | 100
Siemens Industry, Inc.
Building Technologies
Coin Cell Battery
The coin cell battery is present on all PXC-36 Compact Series and on Version 2 or
later of PXC-16 and PXC-24. The hardware version is indicated in the Product Number
as follows:
PXC16
●
The number after
PXC24.2-PE.A is Version 2.
PXC16
●
No number after
PE.A is Version 1.
CAUTION
Batteries
Failure to change a DEAD lithium coin cell battery will result in loss of current time-
date, which may cause loss of data or building control.
Establish a preventative maintenance schedule based on expected battery usage and
life cycle.
●
The coin cell battery maintains the current time-date in the Real Time Clock (RTC)
when power to the field panel is off.
●
There is no physical status on the field panel for a dead coin cell battery.
●
If the coin cell battery is dead or missing when power is off, then RTC time-date is
reset as follows:
–
If the field panel resides on an ALN with an Insight workstation, the Insight
workstation sets the time-date when the field panel returns to the network.
–
If the field panel resides on an ALN without an Insight workstation, the time-
date is synchronized with the network time during the next automatic daily time
update.
●
When the PXC Compact is operating in P1 mode, if the coin cell battery is dead or
missing when power is off, RTC time-date is reset to the factory default. RTC time-
date and must be set manually or by PPCL to ensure time-date based applications
operate as expected.
For more information on time synchronization, see the APOGEE P2 ALN Field Panel
User's Manual (125-3019) or the APOGEE BACnet ALN Field Panel User's Manual
(125-3020) (125-3019 or 125-3020).
Technical Reference Manual
PXC-24
or
indicates the hardware version. For example,
PXC-24
or
is Version 1 hardware. For example, PXC24-
Restricted
145-172
2018-09-25
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