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Control sequence in the event of fault and indication of lockout (cont´d)
Lockout indication
16/24
Building Technologies Division
Infrastructure & Cities Sector
a
b´
b
LOK16.140...
LOK16.250...
LOK16.650...
7785p02/0296
a-b
Startup sequence
b-b´
With certain time variants:
Idle steps of the sequence switch up to the self-shutdown after burner startup
(b´ = operating position of the sequence switch)
b(b´)-a
Postpurge sequence after controlled shutdown.
In start position (a), the sequence switch switches itself automatically off or
immediately initiates another burner startup (e.g. after a fault has been
corrected)
Duration of safety time with expanding flame burners
Duration of safety times with interrupted pilot burners
When lockout has occurred, the burner control can immediately be reset. After
resetting, and also after correction of a fault, which resulted in shutdown, or after a
mains failure, the sequence switch always runs to its start position, whereby only
terminals 7, 9, 10 and 11 receive power in accordance with the control sequence.
It is only then that the burner control programs a burner restart.
Note!
Do not press the lockout reset button for more than 10 seconds.
a
b´
b
LGK16.122...
LGK16.133...
a
b´
b
LGK16.335...
a
b
LGK16.322...
LGK16.333...
LGK16.622...
a
b
LGK16.635...
CC1N7785en
06.03.2012
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