Maintenance; Cleaning; Changing The Battery; General Information - B&R 4PP065.0571-B00 Technical Documentation Manual

5 Maintenance

5.1 Cleaning

Danger!
Power Panel devices may only be cleaned when switched off in order to prevent unintended functions
from being triggered when handling the touch screen or pressing keys.
Power Panel devices should be cleaned with a moist cloth. The cloth should be moistened with water and detergent,
a screen cleaning agent or alcohol (ethanol). The cleaning agent should be applied to the cloth beforehand, not
sprayed directly on the Power Panel device! Aggressive solvents, chemicals, scouring agents, pressurized air or
steam jets should never be used.
Information:
Displays with a touch screen should be cleaned regularly.

5.2 Changing the battery

5.2.1 General information

The battery buffers the internal real-time clock (RTC) and SRAM data (remanent and permanent variables, User
RAM). The battery's buffer lifespan is at least 3 years (at 50°C, 18.5 μA for the components being supplied and
a self-discharge of 40%).
It is only necessary to change the battery on devices with a lithium battery (see the technical data for the Power
Panel device).

5.2.2 Battery status evaluation

The status of the battery is determined immediately after the Power Panel is started and subsequently checked
by the system every 24 hours. During this measurement, the battery is subjected to a brief load (approximately 1
second) and then evaluated. Once determined, the battery status can be read in a customer application using the
BatteryStatusCPU data point or the HwGetBatteryInfo function (AsHW library).
Battery status
OK
BAD
From the point when battery capacity is recognized as insufficient, data buffering is intact for approximately another
500 hours
Information:
The battery should only be changed by qualified personnel.
Data sheetV 1.00 4PP065.0571-B00
Description
Data buffering is intact.
From the point when battery capacity is recognized as insufficient (BAD), data buffering is intact for approximately
another 500 hours
Table 17: Battery status
Maintenance
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