Hardware Modifications; Disassembly - Siemens SIPROTEC 6MU805 User Manual

Mounting and Commissioning
3.1 Mounting and Connections
3.1.2

Hardware Modifications

3.1.2.1 Disassembly

Replacing the Buffer Battery
The battery is located in a battery compartment which is accessible from outside. The battery compartment can
be found on the side of the device. When replacing the battery, it is not necessary to open the device. In the
case of a failure of the auxiliary voltage, the battery ensures operation of the internal clock and storage of all
process data for at least half a year. The device parameterization is always stored in a failsafe way in a non-
volatile memory. The device cyclically checks the charge state of the battery.
Figure 3-1
Replacing the Battery
• Replace the battery only with a model of the same type:
Lithium battery CR2032, 3 V and 230 mAh
• Withdraw the battery compartment.
• Remove the battery.
• Insert the new battery in the battery compartment, the positive pole facing upward.
• Slide in the battery compartment again.
Caution!
Take care during the replacement and the disposal of the battery.
Non-observance of the stated measures might result in property damage.
The battery contains lithium. The legal requirements for the disposal of batteries apply to lithium batteries.
Observe the national and international regulations when disposing of the battery. Bring the battery to an ap-
proved collection place or throw the battery into a collecting box intended for that!
Working on the Device
Note
Before carrying out the following steps, make sure that the device is not operative.
74
Battery compartment
SIPROTEC, 6MU805, Manual
C53000-G1140-C380-5, Release date 06.2018