Table of Contents
Advertisement
- Code on display
- Error message
Name of Alarm and Cause
- Signal
Excessive temperature measured inside the inver-
E056
ter's wiring box:
- Over Temp. (from
High internal temperature.
external box)
This error relates to the temperature measured on exter-
-
Yellow LED
nal boxes (e.g.:TRIO-20.0/27.6kW).
Input voltage (Vin) higher than booster voltage
E057
(Vbulk):
- Vbulk reading error
The error occurs if the input voltage exceeds the Bulk
-
Yellow LED
voltage (voltage on the DC-DC circuit inside the inverter)
E058
Error in the check of Pin vs Pout:
- Pin vs Pout check
The error occurs if the difference between the measured
error
value of input power and that of output power is greater
-
Yellow LED
than the limit imposed internally to the inverter.
P
ower limitation messages
The following table gives the complete list of power limitation messages relating to string in-
verters. Some messages may not be used depending on the inverter model installed.
- Message on display
Name of Derating and Cause
- Signal
Power limitation:
The message indicates that the user has set an output power
limitation for the inverter.
- LIMxxx% CODE:00
LIM xxx% = Power reduction percentage
-
Display symbol b6
Examples:
LIM 100% = no power limitation
LIM 50% = limitation to 50% of the output nominal power
Power limitation for over-frequency:
The message indicates that the user has set a power limitation
due to over frequency in order to reduce the maximum output po-
- LIMxxx% CODE:01
wer of the inverter when the grid frequency exceeds certain limits.
LIM xxx% = Power reduction percentage
-
Display symbol b6
Examples:
LIM 100% = no power limitation
LIM 50% = limitation to 50% of the output nominal power
Solution
• Check that the inverter is not exposed to direct sunlight. Wait for
the temperatures to which the inverter is exposed to return to the
operating range and for the inverter to cool down.
- If the problem (once the ambient temperature has returned to
the range) persists, contact customer assistance. Remember to
wait the time needed to allow the inverter to cool down
• 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 equipment can signal possible output power limitations which may
occur on the basis of:
- settings made by the user
- settings required by the grid standard of the country of installation
- protective devices inside the inverter
The notices of messages are shown on the highlighted part b10 of the
display
.
01
- 104 -
8 - Maintenance
Solution
• Check the limitation value set in the "Settings >
Power Limitation" menu
• Check the limitation value set in the "Settings >
Service > OF Derating" menu
Advertisement
Table of Contents
