218 ControlEdge HC900 Process & Safety Controller User and Installation Manual Revision 10
May 2019
The below graph shows typical Battery Life for different HC900 controller:
Number of Days Initialized Controller without Line Power
Number of Days Initialized Controller without Line Power
Figure 106 – Battery Life in Months
Note: The above graph is assuming,
Honeywell supplied batteries are New when installed
Initialization sequence is followed as described in above paragraph
Installing the backup battery when the CPU is not initialized will cause undue battery drain.
Do not install or replace the backup battery until after site power is applied.
Note:
Upon power up of a controller which had been powered down with a marginal battery, the initial battery
test result will latch and hold for three minutes. This is done so that subsequent battery checks will not
falsely indicate “Good”, should the battery voltage recover after removal of the load. After the 3-minute
wait period, battery removal and replacement with a new battery will restore the battery diagnostic to
Good and reset the battery life accumulator.
To Next Page
Loading...
