text: <s>[INST] Battery for Powerflex 753 755 real time clock Summary: Information about the battery for this function of the drive The Powerflex 753 and 755 have a clock on board that can be set to current time, but does not maintain it through a power cycle. There is provision to install a CR1220 battery on the main control board of each drive, but other than that, there is not much more about this feature. Some details I learned today from an on-line chat with Tech Support: The battery can be expected to last about 10 years. It is used only when the drive is not powered. If the real time clock is set, and then power is cycled, one of two things will happen: If the battery is installed, the clock will maintain its setting through the power cycle. If the battery is flat or not installed, event 206 will be logged. Tech support thinks this is an alarm (not a fault). https://rockwellautomation.custhelp.com/app/answers/detail/a_id/110309 The link above is a knowledgebase article about how to install the battery. TJ McDermott Systems Interface, Inc. [/INST] nan \\n </s>