NOVAR 2100/2200 Operating Manual
4.4 Instrument Operation
After powerup, initial test runs first. During this, the manufacturers logo is displayed momentarily.
After the test the controller returns into one of two main states corresponding to the state last state set
( the last state is registered in non-volatile memory )
•
Control state
… The instrument performs power factor control process; if, for some reason, it
can not perform it, it gets into
the standby
state temporarily.
•
Manual state
… the instrument does not perform power factor control process; manual
output manipulation is allowed for testing purposes.
4.4.1 Control State
In the control state, the controller carries out its standard task – the power factor control process. The
process consists of three basic steps performed over and over again :
•
evaluation of reactive power control deviation and, depending on its magnitude, control time
countdown
•
as soon as the control time expires, new combination of outputs is calculated
•
then the new combination is applied to the outputs
This sequence can be temporarily suspended due to either operator manual intervention or
automatically by the controller for some reason. Then the controller can gets temporarily to one of
following „substates“ :
52
Fig. 4.13 : PFC Controller Main Operating States
