B&R Automation PC 620, User Manual

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Technical data • Entire device
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139 Automation PC 620 with 945GME N270 CPU board User's Manual V 1.10
2.13.30 Battery
The lithium battery (3 V, 950 mAh) buffers the internal real-time clock (RTC) as well as the
individually saved BIOS settings and is located behind the black cover. The buffer duration of the
battery is at least 4 years (2½ years with the SRAM module model number 5AC600.SRAM-00
or with an APC620 embedded system unit and at 50°C, 8.5 mA current requirements of the
supplied components and a self discharge of 40%). The battery is subject to wear and should be
replaced regularly (at least following the specified buffer duration).
For more on changing the lithium battery, see chapter 7 "Maintenance / Servicing", section
"Changing the battery", on page 493.
For technical information on the lithium battery, see chapter 6 "Accessories", section 4
"Replacement CMOS batteries", on page 418.
Battery status evaluation
The battery status is evaluated immediately following start-up of the device and is subsequently
checked by the system every 24 hours. The battery is subjected to a brief load (1 second) during
the measurement and then evaluated. The evaluated battery status is displayed in the BIOS
Setup pages (under Advanced - Baseboard monitor) and in the B&R Control Center (ADI driver),
but can also be read in a customer application via the ADI Library.
Battery
Battery
Type
Removable
Lifespan Renata 950 mAh
Yes, accessible from the
outside
4 years
1) 2)
1) At 50°C, 8.5 µA of the supplied components and a self discharge of 40%.
2) The buffer duration is 2 1/2 years if a SRAM module (Mod.Nr. 5AC600.SRAM-00) is installed or in conjunction with an APC620
embedded system unit.
Accessories Short description
0AC201.91 Lithium batteries, 4 pcs .
Lithium batteries (4 pcs.),
3 V / 950 mAh, button cell
4A0006.00-000 Lithium battery, 1 pc.
Lithium battery (1 pcs.),
3 V / 950 mAh, button cell
Table 67: Technical data - battery
Battery status Meaning
N/A Hardware, i.e. firmware used is too old and does not support read.
GOOD Data buffering is guaranteed
Table 68: Meaning of battery status