Technical data
Automation PC 3100 User's manual V 1.00
Translation of the original documentation
43
2.2.6.11 Battery
The lithium battery (3 V, 950 mAh) ensures power to the internal real-time clock (RTC). It is located behind the
orange cover above the power and reset buttons. The self-discharge time of the battery is at least 4 years (at 50°C,
8.5 μA for the components being supplied and self-discharge of 40%). If an SRAM interface option is installed, the
service life is 2½ years. The battery is subject to wear and should be replaced regularly (at least after the specified
service life) by changing the battery.
Battery
Battery
Type
Removable
Service life
Renata 950 mAh
Yes, accessible from the outside
4 years
1)
Model number
Short description
Batteries
0AC201.91
Lithium batteries, 4 pcs., 3 V / 950 mAh, button cell
4A0006.00-000
Lithium battery, 1 pc., 3 V / 950 mAh, button cell
Reset
Power
Battery
Battery
Table 32: Battery
1)
At 50°C, 8.5 µA for the components being supplied and self-discharge of 40%. If an SRAM interface option is installed, the service life is 2½ years.
The battery state is determined by the system immediately after the device is switched on and subsequently every
24 hours. During the measurement, the battery is subjected to a brief load (approx. 1 second) and then assessed.
The determined battery state is displayed in BIOS Setup (Advanced → OEM features →
) and the B&R Control Center (ADI driver) but can also be read out in a customer application via the ADI library.
Battery state
Explanation
N/A
The hardware or firmware used is too old and does not support readout.
GOOD
Data retention is ensured.
BAD
As soon as the battery capacity is recognized as BAD (insufficient), retention of data is ensured for approximately another 500
hours.
Table 33: Explanation of battery state
From the point when battery capacity is detected as insufficient, retention of data is ensured for approximately an-
other 500 hours. When replacing the battery, data is retained for approximately 10 minutes by a gold foil capacitor.
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