220 ControlEdge HC900 Process & Safety Controller User and Installation Manual Revision 10
May 2019
Battery Replacement Procedures
Table 42 – Replacing a Backup Battery (CPU Powered))
If the battery is removed from the Controller Module when AC power is not
applied, the content of RAM will be lost.
Before beginning this procedure, upload and SAVE a copy of the configuration, or ensure
that a previously saved copy of the current configuration is available.
Apply site AC power to the Power Supply that is associated with the controller Module.
Press the latch on the battery cover to release
the battery holder, and use the molded-in
extension on the battery holder to extract the
holder.
Note the orientation of the battery-holder
assembly for re-insertion afterwards
The battery is retained in the holder by spring
tension of the plastic holder itself.
Extract the battery (single battery for older
models, two batteries for new models), from
the holder by using your thumb to apply
pressure to the front end of the battery, and
rotating it to the left.
Insert the negative end of the new battery into
the back end of the holder, and press on the
battery so that it snaps into the holder.
To ensure that the battery is seated properly,
rotate it in the holder, using finger or thumb
pressure toward the positive (front) end of the
battery.
While maintaining proper orientation (battery toward the left), slide the battery holder into
the slot in the Controller Module until it snaps into place.
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