ABB RVC Instructions D'installation Et D'utilisation page 10

10
TROUBLESHOOTING
Fault
The controller does not switch on
or off steps although there is a
considerable variable inductive
load.
The controller does not seem to
activate any steps.
One of the arrow indicators
flashes.
The preset power factor is not
achieved.
All capacitors are switched on
although the required reactive
power is relatively low.
The controller is connected but
does not work (nothing on
display).
The AUTO SET procedure stops
and the controller displays an
error message "FXX".
All capacitors are switched off and
the alarm icon is on for more than
40 sec.
R VC M A N U A L E N G L I S H
Solution
• Check that the controller is in
automatic Mode.
• Check setting of phase shift and
C/k.
• Check that the CT short-circuit
bridge is removed.
Wait for the delay time between
switching and/or the power
outage delay time.
Normal situation when the actual
inductive current varies around
the set sensitivity (C/k).
At low or no load, a low power
factor can correspond to a very
small inductive current. The
corresponding capacitor steps
are too large for compensation. If
the average cos j over a period of
time is too low, the preset cos j
may be increased.
Check settings of phase and C/k
values.
Check the voltage protection
settings, fuses and voltage
supply.
Please identify the meaning of the
error message (see table on next
page) and act accordingly.
Check the network voltage and
Vmax / Vmin / THDV max
protection parameters.