Technical documentation
Rev. 02
Reactive Factor Controller CX plus
37
AUTO:
Automatic synchronisation for highest measurement accuracy at
mains voltage without commutation notches.
50
:
FIX-50 HZ
for a safe operation in 50 Hz mains with extremely poor
mains quality.
60: FIX-60 HZ
for a safe operation in 60 Hz mains with extremely poor
mains quality.
209
Temperature offset
-10
…10 °C
A temperature offset for the temperature measurement can be set here, in
order to correct possible component-dependent deviations.
9.8
300 Settings control
Contains settings in order to adjust the control to the system requirements and to optimise it.
300
Settings control
MENU
FUNCTION
AREA
301
Control sensitivity
55…100 %
The control sensitivity indicates the switching threshold for switching steps
on and off. A low value allows a more exact compensation result. As a
result, however, the possibility increases that the control tends to hunt.
The value can be set in the range of 55% - 100%. The factory setting is
60%. This means, if the missing reactive power for the control target is
greater than 60% of the step power, the step may be switched on resp. off.
In this case, 40% of overcompensation is allowed after switching on resp.
40% of under-compensation is allowed after switching off.
302
Target COS
1
0.70 c...0.70 i
The active power factor, which shall be reached by the reactive power
compensation (control target), is determined by setting the target COS
1.
303
Target COS
2
0.70 c...0.70 i
The active power factor, which shall be used as control target, is
determined by setting the target COS
2, if P export (SETUP/304 = YES)
was identified or if the digital input switches to low rate.
304
Target COS
2 in case of P export
Yes/No
"
YES
" the controller uses the target COS
2 as control target in case of P
export.
"
NO
" the controller works with the target COS
1 in case of P export.
305
Switching time
1…6500 s
The switching time refers to the waiting time between switching individual
steps in the normal control algorithm. This value should be adjusted
respectively.
The switching time should be set based on the following aspects:
1. The switching time shall protect the contactors against an
unnecessary amount of switching operations and thus against a
too rapid wear.
2. The need for reactive power is determined via the switching time.
Fast fluctuations of the reactive power are compensated in the
process.
306
Switching time step exchange
1…6500 s
This refers to the waiting time between switching off an active step and
