ICAR CRA BS7 Instrucciones De Uso página 15

8. Alarm messages
In case of anomaly, the display shows the following error codes:
DISPLAY
Er.U Voltage input signal error.
Current input signal error (current
lower than 2,5% of the endscale).
Er.I
The power factor measurement is
not possible.
Frequency error. The measured
line frequency is out of the
Er.F
admissible tolerance ± 5% of the
rated frequency.
Internal EPROM memory error
Er.S
(checksum).
Er.E Internal EPROM memory error.
If an error occurs, all the steps are immediately disconnected and the alarm relay (if
enable through the set-up) is energized.
9. Alarm relay
If in the SET UP the last step has been programmed as alarm ("ALA"), the correspondent
relay is energized (and the LED flashes) when an error message occurs or when it is
impossible to reach the setpoint even with all the steps connected or disconnected.
10. Operating mode selection
MAN/AUTO operating mode selection
The MAN/AUTO selection is allowed only if the vertical LEDs (function menu) are off, that
is when the display shows the power factor of the plant.
The selection is saved automatically so that, at feeding, the unit starts operating according
to what was set before.
Manual mode:
Notes:
The keys or
If the auxiliary supply lacks during the operation, the present step configuration is saved.
DESCRIPTION
MAN
are latch type .
Check the voltage input connections
(terminals 18-19).
1. Check the line load.
2. Check
(terminals S1-S2).
The type of unit is not compatible
with the line to be controlled: contact
ICAR.
Contact ICAR.
Switch off and on the unit: check the
set parameters and correct them
eventually. Contact ICAR if the error
occur again.
22
CHECK
the current input