Reference Manual
BLR-CX-R / BLR-CX-T
Rev. 07
2018-07
31
8
TROUBLESHOOTING
Fault
possible cause
Remedy
No indication in
display
aux. voltage missing
Check the correct connection of
power supply and correct if
necessary.
Display
"
"
Voltage
outside
tolerance
Check measurement voltage
Check nominal voltage and
adjusted tolerance and correct if
necessary.
Display
"
"
Measured current is
to small
check
connection
of
CT,
probably there is a break in the
line
remove short circuit link of the
CT
wrong display of
current or voltage
wrong
transformer
ratio
Check settings of transformer
ratios in the "SETUP" (100)
menu and correct if necessary.
The power factor is
displayed
incorrectly.
The
connection
detection was not
performed.
The phase angle was
adjusted
manually
false.
Offset reactive power
is adjusted.
Start "Ai" in "SETUP" menu.
Check
point
206
in
the
"EXPERTMENU" and correct the
phase angle if necessary.
With the compensation system,
a transformer is compensated.
The displayed Pf is in front of the
transformer. The displayed Pf is
in front of the transformer.
The power factor
does not change
after the switching
of a step.
Steps are switched
off again.
CT
incorrectly
positioned.
Capacitor defect
Check installation position of the
current transformer according
to wiring diagram (current of the
load and the capacitors must be
measured!).
Check capacitor, possible fuse,
capacitor, or contactor defective.
