Technical documentation
Rev. 02
Reactive Factor Controller CX plus
10
6 Questions during commissioning
1)
“AUTO”
is not displayed
control stopped or switched off.
Possible causes:
Manual operation, control has been stopped or switched off in the setup menu.
Current is less than 5 mA, voltage of THD of voltage or current are out of tolerance, temperature is too
high, “Automatic initialisation (AI)” was cancelled with error.
Control is switched off
2)
Display
“U ALARM”
measuring voltage out of tolerance
Possible causes:
Over- or under-voltage in the system, the set nominal voltage and the voltage transformer factor do
not correspond to the system.
Solution:
Check the settings for nominal voltage (SETUP/100/Un) and voltage transformer
(SETUP/100/Pt). The set voltage tolerance range is too small.
Solution:
Check the settings of the tolerance range (SETUP/204).
3)
Display
“I Lo ALARM”
no current
Possible causes:
Connection from the current transformer to the controller is not correct; current transformer jumper is
not removed; transformation ratio of the transformer is too large
current is less than 5 mA
no
current
4)
Display
“EXPORT”
feeding back of active power
There is no real feeding back, please check the connection of measuring voltage and current (phase,
polarity).
Possible causes:
The set phase correction angle does not correspond to the connection of measuring voltage and
current
Solution:
Correct the connection, execute the “Automatic initialisation (AI)” or manually set the phase
correction angle correctly.
Measuring voltage or current has been connected at a twisted angle of 180° from the direction of
connection (U2 / U1 instead of U1 / U2 resp. S2 / S1 instead of S1 / S2).
