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Building Technologies
Basic Documentation LMV5...
CC1P7550en
19 O2 trim control with LMV52 and PLL52
22.05.2018
19.4.14 Displaying the O2 trim controller status
The status of the O2 trim controller can be read out with the AZL52 via data point
State
O2 Ctrl
.
deactivated
The O2 trim controller is not active. The system operates along the
ratio control curves.
locked
The manipulated variable of the O2 trim controller is held at the last
value.
LockTStart
Locking time following startup until the O2 trim controller is initialized
or released. The locking time is necessary in order to ensure that the
actual O2 value is measured. The O2 trim controller is still
deactivated or locked
InitContr
The O2 trim controller is initialized. The O2 trim controller is locked.
LockTLoad
The O2 trim controller is locked due to a load change.
active
The O2 trim controller is active and operates to the O2 setpoint.
LockTCAct
If switching functions (control interventions by the O2 trim controller)
are active, the O2 trim controller is locked for 2 x Tau.
Process
data
display
values
State O2 Ctrl (deactivated / locked / LockTStart / InitContr / LockTLoad
/ active / LockTCAct)
