RM 2106 / 2112
20
After measurement the control relay indicates
the results it has determined on the display
(c).
Flashing messages that begin with E (e.g.
E2), indicate an error. Message ”I=0” also
indicates an error after initial start-up.
In such cases the entire control system is to be
switched off and the error must be eliminated.
(For troubleshooting see section 6.)
In some circumstances the control relay
displays the message ”A2” after identication
of the connection type. This means that there
are deviations from the types of connection
shown that do not restrict the control process.
This message is acknowledged automatically
after about 30 seconds or can be acknowledged
by pressing any key.
The control relay always displays ”A1”
after identication of the connection type. A
stage indicator (a) also ashes. The value
displayed alternately with ”A1” in the display
is the determined value for the indicated stage
(switching contact).
This message is acknowledged automatically
for each stage after about 15 seconds or can
be acknowledged earlier by pressing any key.
When all messages have been acknowledged,
the control relay begins the automatic
regulating process. The current power factor
appears on the display.
If the power factor displayed does not
correspond to the actual power factor, the
identication of the connection must be
repeated. This is activated by pressing
the ”Select” and ”Voltage THD” keys
simultaneously for at least 3 seconds (check
system).
3.2 Subsequent start-up
The control relay begins with its normal regulatory
program immediately after a power failure.
If the ”Select” and ”Voltage THD” keys are
pressed simultaneously for at least 3 seconds
(check system), then the control relay carries out
connection identication again. It then behaves
in the same way as in the initial start-up (see
section 3.1).
This requires that automatic connection
identication should be activated. ( setup mode
-4-; see section 4.4)
The programmed control parameters are
stored in a non-volatile memory and can be
altered as necessary. (see chapter 4)
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