ABB UNO-DM-3.3-TL-PLUS Product Manual page 162

- Code on display
- Error message Name of Alarm and Cause
- Signal
- W026 *
Reset of the Arc Fault error:
- AFDD user reset
Manual reset of the Arc Fault error; this operation can
- No LED
be made through the display or advanced configuration
*not visualised on dis-
software.
play
- W027 *
Resetting of the Latch alarm conditions:
- Latch-Manual reset
Manual reset of the Latch alarm conditions; this opera-
- No LED
tion can be made through the display or advanced con-
*not visualised on dis-
figuration software.
play
Connection to the grid unsuccessful
- W046
The alarm is logged when a Missing grid or Input UV
- Grid conn. fault
error occurs or due to the manual disconnection of the
- Alarm LED
inverter during the grid connection sequence.
- W047 FW update method unsuccessful
- Update Incomplete The alarm occurs when a firmware update has not
- Alarm LED been completed.
Automatic disconnection from the grid due to time
limit:
- W048
If the inverter exceeds the set grid connection time limit
- Periodic GridOff
set by the grid standard, it will automatically have to
- Alarm LED
carry out a disconnection and reconnection to the grid
to carry out the Riso test.
- W049 *
Variation of the grid standard
- Global-Settings Event
Variation of the inverter's grid standard; this change
- No LED
can be made through the display or advanced configu-
*not visualised on dis-
ration software.
play
Converter in locked state:
- W058
The converter lock state is connected to an installation
- System Frozen
phase in which the starts-up and grid connection condi-
- Alarm LED
tions are not yet present.
Input over-current (photovoltaic generator):
- E001
The alarm occurs when the inverter's input current ex-
- Input OC
ceeds the inverter's threshold for maximum input cur-
- Alarm LED
rent.
Input overvoltage (photovoltaic generator):
The alarm is generated when the input voltage (from
the PV generator) exceeds the inverter's threshold of
maximum input voltage.
- E002
The alarm occurs before reaching the absolute thresh-
- Input OV
old over which the inverter is damaged.
- Alarm LED
When the inverter's input voltage exceeds the overvolt-
age threshold, the inverter will not start up due to the
generation of the alarm.
DSP initialisation error:
- E003
The main microcontroller cannot initialise correctly the
- No Parameters
two DSPs (booster stage and inverter stage). The error
- Alarm LED is caused by communication problems on the inverter's
internal bus.
"Bulk" over-voltage (DC-DC circuit):
- E004 Error inside the inverter. The alarm is raised when the
- Bulk OV voltage at the heads of the bulk capacitors exceeds the
- Alarm LED overvoltage threshold (internal unchangeable thresh-
old).
Solution
• The reset of the Arc Fault error is done directly by the cus-
tomer/installer and is not an error. The information is only saved
on the historic record of the events memorised by the inverter
• The reset of the Latch alarm conditions is done directly by
the customer/installer and is not an error. The information is
only saved on the historic record of the events memorised by
the inverter
• Once the error occurs, the inverter tries to return to normal
operation.
If the problem persists after a number of attempts to connect
the inverter, switch the inverter off and then on again.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
• Complete any pending firmware updates.
- If the problem persists once the firmware updates have been
completed, switch the inverter off and on again.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
• The presence of this alarm is not an error as the automatic
disconnection is prescribed by safety regulations.
- If the inverter disconnects in a shorter time than expected,
contact customer assistance.
• The variation in the inverter's grid standard is done directly
by the customer/installer and is not an error. The information
is only saved on the historic record of the events memorised
by the inverter
• Complete the commissioning phase of the inverter.
- If the problem persists (once the commissioning phase has
been completed and the inverter has been switched off and
back on again), contact customer assistance.
• Check whether the composition of the PV generator enables
input current which exceeds the maximum threshold allowed by
the inverter and that the configuration of the inputs (independ-
ent or in parallel) is carried out correctly.
- If both checks are positive, contact customer assistance.
• It is necessary to measure the input voltage inside the inverter
with a voltmeter.
- If it is higher than the maximum voltage of the operating range,
the alarm is genuine and it is necessary to check the configura-
tion of the PV generator. If the voltage has also exceeded the
maximum input threshold the inverter could be damaged.
- If it is lower than the maximum voltage of the operating range,
the alarm is caused by an internal malfunction and it is neces-
sary to contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem persists (once the inverter has been switched
off and back on again), contact customer assistance.
• The alarm may be triggered by causes external to the inverter:
- An excessive input voltage can be recorded as a condition for
bulk overvoltage. In this case it is advisable to check the invert-
er's input voltage and should this value be close to the input OV
threshold, review the configuration of the photovoltaic generator.
- Excessive grid voltage could cause the bulk voltage to rise in
uncontrolled fashion with a consequent protection intervention
and hence generation of the alarm. In these cases the alarm is
transitory and the inverter automatically restarts
- The alarm may be triggered by causes inside the inverter and
in this case it is necessary to contact customer assistance.
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8 - Maintenance