KB / KB-UL (E4 + E6) 10/2021 page 36/147
6.3 Performance during and after power failure
During a power failure, all controller functions are shut down. The optional zero-voltage relay alarm output
(chap. 19.3) is switched to alarm position for the whole duration of the power failure.
After the power returns, all functions return to the same status the chamber had before power failure. . The
controller continues to function in the original operating mode it was in previously before the power failure
occurred.
• Performance after power failure in “fixed value” operation mode
All functions return to the same status the chamber had before power failure. The set-points are imme-
diately resumed.
• Performance after power failure during time program operation
The program is resumed at the point where the interruption occurred with the latest set-points reached
during the program run.
• Performance after power failure during week program operation
The week program continues with the values corresponding to the current time.
In the “Control off” controller mode, no program can be started.
If the temperature has dropped below the alarm limit during power failure, confirm the alarm with the RESET
button as soon as the correct values are reached again (chap. 14.4).
In the Event List (chap. 15) the message “Power supply was interrupted.“ is shown.
6.4 Information
You access chamber information like the chamber type, serial no., firmware version etc. To display the
system information, go to Menu > System information
08.03.2015 05:05:06
Submenu “System information” (sample values).
Special application number: 00-0000
Parameter version: 511B-000A-0005
Firmware version (1): 521C-0001-0030
Firmware version (2): 521B-0005-0028
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