ABB UNO-2.0-I-OUTD Product Manual page 86

- Code on display
- Error message Name of Alarm and Cause
- Signal
Input over-current (photovoltaic generator):
- E001
The alarm occurs when the inverter's input current
- Input OC
exceeds the inverter's threshold for maximum input cur-
- Yellow LED
rent.
Input over-voltage (photovoltaic generator):
The alarm is generated when the input voltage (from the
PV generator) exceeds the inverter's threshold of maxi-
mum input voltage.
- E002
The alarm occurs before reaching the absolute threshold
- Input OV
over which the inverter is damaged.
- Yellow LED
When the inverter's input voltage exceeds the Over Vol-
tage 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
- Yellow 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
- Yellow LED the Over Voltage threshold (internal unchangeable th-
reshold).
- E005 Communication error inside the inverter:
- Comm.Error The alarm occurs when there are communication pro-
- Yellow LED blems between the control devices inside the inverter.
Output over current:
- E006
The alarm occurs when the inverter's output current
- Output OC
exceeds the inverter's threshold for maximum output
- Yellow LED
current.
- E007 Saturation recorded on the IGBT components:
- IGBT Sat The alarm occurs when one of the inverter's active devi-
- Yellow LED ces is in a saturated state.
- E009
Error inside the inverter:
- Internal error
Error inside the inverter
-
Yellow LED
Low "Bulk" voltage (DC-DC circuit):
• The alarm may be triggered by causes external to the
- E010 inverter: a reduced input voltage on the inverter (just
- Bulk Low above the activation voltage) but which is not accompa-
-
Yellow LED nied by a sufficient availability of power from the pho-
tovoltaic generator (typical condition of the stages with
limited irradiation)
- E011 Long wait for "Booster" regime to start:
- Ramp Fail Error internal to inverter relating to start up time for DC-
- Yellow LED DC circuit regime (Booster)
Error in the "Booster" circuit (DC-DC side) recorded
- E012
by the "Inverter" circuit (DC-AC side):
- DcDc Fail
Error internal to inverter relating to operation of the DC-
- Yellow LED
DC circuit regime (Booster)
Solution
• 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 (independent
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 necessary
to contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, 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 over voltage. In this case it is advisable to check the inver-
ter'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.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
Once the error occurs, the inverter tries to return to normal ope-
ration.
- Should the error occur sporadically, it may be caused by a bru-
sque transition of the grid voltage or of the input voltage, but is
not due to a malfunction by the inverter.
- If the error is connected to an internal breakdown, it will continue
to appear and so it is necessary to contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
- If the error signal occurs sporadically, it may be due to causes
external to the inverter (limited irradiation and so limited power
availability from the PV generator).
- If the problem occurs systematically also in conditions of high
irradiation and with input voltage which is significantly higher than
the activation voltage, contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
• Error inside the inverter and cannot be checked externally.
- If the problem (once the inverter has been switched off and back
on) persists, contact customer assistance.
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8 - Maintenance