frako RM 2106 - Page 40

RM 2106 / 2112
40
Pos. Fault Possible causes Necessary action
6 No stage activation in
automatic control relay
mode despite inductive
load
The response current
has been programmed
incorrectly
Set the response current correctly
in accordance with Table 1 or
Formula 1
Response current not
correctly identied des-
pite automatic response
current identication
being set
Check the control circuit according
to the connection diagram and
repeat the check system procedure
Another measuring
device switched in
parallel with the control
relay current path
Current paths for different measu-
ring devices should always be
switched in series
Step size of capacitor
is too large
Introduce capacitors with smaller
step size
7 „I=0“ ashes on the
display
Current transformer line
interrupted or short-
circuited
Check current in current path
using ammeter (I
min
≥ 0.02 A)
8 Displayed power factor
is less than target
power factor, even
though the control
relay has activated all
stages
Error in the control
circuit
Check for the contactors
to be energized
Error in the capacitor
current circuit
Check fuses and contacts of ca-
pacitor contactors as well as the
power consumption of the various
capacitor stages if necessary
System too small Add capacitors
9 Control relay does not
switch off all stages at
light load or standstill
Response current is
set too high
Set the response current correctly
according to Table 1 or Formula 1
Control relay in manual
mode
Press the „Select“ key (i)
Table 3 Notes on troubleshooting
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