28
7. Troubleshooting
Pos
Fault
Possible causes
Necessary action
1
Control relay not work-
ing; no displays on the
front of the control relay.
No or the wrong voltage
has been applied to the
control relay.
Check that operating voltage
applied to the control relay is
at the right level.
2
The control relay does
not react to manual
switching despite
Delay time of about
10 seconds is not up.
If the required stage flashes in the
stage display (a) then wait until
the stage switches.
availability of power and
functioning indicators.
Manual mode is not
activated.
Hold down "Select" key until
"Manual Mode" LED (g) lights up.
3
Stage indicator (a) lights
up, however capacitor
contactors are not
Control circuit not
connected correctly or
no control voltage.
Check the control circuit in accor-
dance with the connection dia-
gram; check fuse.
switched on.
No zero conductor at
contactors.
4
Control relay does not
terminate the automatic
measuring procedure.
Unstable mains supply
(strong power factor
variation).
Wait for more stable mains condi-
tions or enter the response cur-
rent and switching sequence
manually.
5
One stage is continu-
ously activated and de-
activated in automatic
Response current set too
low.
Set the response current correctly
in accordance with Table 1 or
Formula 1.
control relay mode.
Strong load variation.
6
No stage activation in
automatic control relay
mode despite inductive
The response current has
been programmed
incorrectly.
Set the response current correctly
in accordance with Table 1 or
Formula 1.
load.
Response current not
correctly identified despite
automatic response current
identification being set.
Check the control circuit accord-
ing 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 meas-
uring devices should always be
switched in series
Step size of capacitor is too
large.
Introduce capacitors with smaller
step size.
Table 3: Notes on troubleshooting
Содержание RM 2106/12
Страница 1: ...Operating Instructions Reactive Power Control Relay RM 2106 12 ...
Страница 2: ...2 ...
Страница 31: ...31 Notes BA V1 11 ab SW V1 00 ...