CAUTION!
If the media was already unlocked by the spring mech-
anism, with shifting the sliding mechanism, a just
installed memory card can jump out of the slot!
4.2.5 Battery backup for clock and RAM
A rechargeable battery is installed on every CPU to safeguard the
contents of the RAM when power is removed. This battery is also
used to buf
fer the internal clock. The rechargeable battery is main-
tained by a charging circuit that receives its power from the internal
power supply and that maintain the clock and RAM for a max. period
of 30 days.
– Please connect the CPU at least for 24 hours to the
power supply
, so that the internal accumulator/
battery is loaded accordingly.
– Please note that in case of repeated discharge
cycles (charging/buffering) can reduce the buffer
time continuously. Only after a charging time of 24
hours there is a buffer for max. 30 days.
CAUTION!
– After a power reset and with an empty battery the
CPU starts with a BA
T error and executes an
overall reset. The loading procedure is not influ-
enced by the BAT error.
– The BAT error can be deleted again, if once during
power cycle the time between switching on and off
the power supply is at least 30sec. and the battery
is fully loaded. Otherwise with a short power cycle
the BAT error still exists and an overall reset is exe-
cuted.
VIPA System 300S Hardware description
Structure > Battery backup for clock and RAM
HB140 | CPU | 314-6CF03 | GB | 16-43 35
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