V2.01
25361_EDEBD
A0281-2320-1_EN
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Functional principle
2
Functional Principle of the Controller
The multicomp F144-1V1C6DO6RO- 3 hybrid controller has 12 outputs to control capac-
itive compensation stages. Outputs 1 to 6 are designed to control thyristor modules (by
optocoupler outputs) and outputs 7 to 12 to control capacitor contactors (by floating
relay contacts).
To make optimal use of the thyristor modules' or capacitor contactor modules' switching
performance, you can set the following parameters separately:
for thyristor stages
Switching interval 50 to 9999 milliseconds
Discharge time 20 to 9999 milliseconds
Idle time
20 to 9999 milliseconds
for contactor stages
Switching interval 0 to 10 seconds
Discharge time
0 to 900 seconds
Idle time
0 to 300 seconds
The controller's microprocessor records the mains voltage and current consumption of
the entire plant by measuring transformer inputs (A/D converter) and, on the basis of this,
calculates the active and reactive power ratio of the mains. The controller operates in four
quadrants.
Energy recovery in generator operation is detected and indicated by a "G" flashing
on the LCD display. During this time, compensation to cos phi 1.00 (output cos phi) is
performed. To prevent alternating switching operations, this target cos phi is main-
tained for 15 minutes after generator operation.
The compensated power required for the target cos phi is calculated continuously. If the
power difference corresponds to the set hysteresis (switch-on and switch-off hysteresis),
the stages are switched depending on the required compensation power. Manually
switched stages are, however, not included in the optimization. In case of identical
stages with identical power, the stage that has been switched off for the longest time is
switched on.
Having fewer switching operations results in optimum adjustment. Even for large sys-
tems, sensitive controls can be set up with just a few modules. Stage ratios do not need to
be considered. After compensation, switching operations are interrupted for a config-
urable time. To prevent alternating switching operations, you can increase the stage
switch-off delay by up to 150% of the smallest stage's power.
After an adaption time of 60 seconds, the thyristor stages are switched by contactor stag-
es of the same size. This guarantees that the fast control characteristics can be kept.
In low load operation (secondary measuring current under the limit), the stages are
switched off after the set delay time.
The integrated temperature measurement input monitors the temperature in the reac-
Содержание F144-MS-1V1C6-6RO-6DO-3
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