B&R PP21 User Manual page 45

Procedure
The product design allows the battery to be changed with the Power Panel switched on or off. In
some countries, safety regulations do not allow batteries to be changed while the module is
switched on.
The data in RAM is buffered up to 10 min due to the gold foil capacitors. During
this time period, a battery change without data loss is guaranteed.
• Touch the mounting rail or ground connection (not the power supply!) in order to discharge
any electrostatic charge from your body.
• Remove the cover from the lithium battery holder using a screwdriver.
• Remove the battery from the holder by pulling the removal strip (don't use uninsulated tools
>- risk of short circuiting). The battery should not be held by its edges. Insulated tweezers
may also be used for removing the battery.
• Insert the new battery with correct polarity. The removal strip should be protruding from the
battery holder and the "+" side of the battery should be facing downward. In order to be
able to remove the battery again in future, the removal strip must protrude from the upper
side of the battery.
• Now wrap the end of the removal strip over the top of the battery and insert it underneath
the battery so that it does not protrude from the battery holder.
Lithium batteries are considered hazardous waste! Used batteries should be
disposed of accordingly.
Power Panel User's Manual
Correct
Figure 25: Handling the battery
Power Panel • Changing the Battery
Incorrect
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