frako RM 2106 - Connection Messages; Alarms in Automatic Control Operation

RM 2106 / 2112
36
6.1.4 I = 0 - No current in current path
It was not possible to measure a current of
more than 20 mA in the current path when
capacitor stages were either activated or
deactivated.
Possible causes:
■ fault in the current transformer connection
■ the current transformer is located in the
wrong place
■ the current transformer ratio is too high
6.2 Connection messages
In addition to the error messages, the control
relay also displays the results of its automatic
connection recognition. Messages A1 and A2
can be acknowledged by pressing any key
or are automatically acknowledged after a
waiting period of about 30 seconds.
6.2.1 A2 - Incorrect connection that can be
corrected internally
The connection has not been made in
accordance with connection diagrams 3 to 6.
However, the problem has been recognised
as a simple confusion in the phase
conductors or in the connection of the current
transformer. The control relay can continue
to operate with this connection.
6.2.2 A1 - Relative value of the switch
output
The value for the relevant switch output is
displayed while message A1 appears on the
display. Switch outputs at which little or no
capacitor rating has been recognised are
assigned switching sequence factor 0.0. The
user should check whether the values displayed
correspond to the connected capacitor stage.
The connection must be checked if deviations are
extreme. The switching sequence determined is
also stored in the setup mode (-6-).
6.3 Alarms in automatic control
operation
The ”Alarm” LED (e) lights up for as long
as an alarm is active. If alarm output was
activated on contact 6 of the RM 2106 device
or contact 12 of the RM 2112 device (setup
code -3-), this contact also closes. If the
alarm status has ended, the ”Alarm” LED
turns off and the alarm contact opens again
if in use. The message continues to ash on
the display. Pressing the ”Voltage THD” key
(h) enables the cause of the alarm to be read
out and the alarm to be acknowledged during
or after the alarm .
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