ABB UNO-DM-2.0-TL-PLUS Manual page 174

- Code on display
- Error message Name of Alarm and Cause
- Signal
Parameters of grid voltage outside range:
This error signal occurs when during the inverter's nor-
mal operation the grid parameters exceed the limits
- W003 imposed by the grid standard set on the inverter and by
- Grid Fail the grid operator or the utility:
- Alarm LED - Grid voltage absent (after the signal the inverter goes
to "Missing Grid")
- Unstable grid voltage (down or up)
- Unstable grid frequency
Grid overvoltage:
- W004
This error signal occurs when during the inverter's nor-
- Grid OV
mal operation the grid voltage exceeds the maximum
- Alarm LED
limit set by the operator.
Grid undervoltage:
- W005
This error signal occurs when during the inverter's nor-
- Grid UV
mal operation the grid voltage exceeds the minimum
- Alarm LED
limit set by the operator.
Grid over-frequency:
- W006
This error signal occurs when during the inverter's
- Grid OF
normal operation the grid frequency exceeds the maxi-
- Alarm LED
mum limit set by the operator.
Grid under-frequency:
- W007
This error signal occurs when during the inverter's nor-
- Grid UF
mal operation the grid frequency exceeds the minimum
- Alarm LED
limit set by the operator.
- W010 *
- Fan Fail Fan Fail:
- Alarm LED flash. This error occurs when there is a malfunction in the fan/
*not visualised on dis- fans inside the inverter.
play
Solution
• Check the grid voltage on the inverter.
- Should it be absent, check for absence of grid voltage on the
supply point.
- If, on the other hand, the voltage tends to rise (when the in-
verter is connected) there is high line or grid impedance.
• Check the grid voltage also on the supply.
- If it is high, it means that there is high grid impedance. In this
case, ask the operator to adjust the grid voltage. If the opera-
tor authorises a change to the inverter's parameters, you can
set the new limits into the "Inverter>Settings>Service" display
menu or into "Setup>Setup AC side" of the web user interface
(refer to dedicated sections of this manual for further informa-
tion).
- If the voltage at the point of supply is much lower than that
measured on the inverter, it is necessary to adjust the line (in-
verter-contactor).
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid) contact
customer assistance
• Check the grid voltage on the inverter.
If the voltage tends to rise (when the inverter is connected),
there is a problem of high line or grid impedance.
• Check the grid voltage also on the supply.
- If it is high, it means that there is high grid impedance. In this
case, ask the operator to adjust the grid voltage. If the opera-
tor authorises a change to the inverter's parameters, you can
set the new limits into the "Inverter>Settings>Service" display
menu or into "Setup>Setup AC side" of the web user interface
(refer to dedicated sections of this manual for further informa-
tion).
- If the voltage at the point of supply is much lower than that
measured on the inverter, it is necessary to adjust the line (in-
verter-contactor).
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
• Check the grid voltage on the inverter.
• Check the grid voltage also on the supply:
- If it is high, it means that there is high grid impedance. In this
case, ask the operator to adjust the grid voltage. If the opera-
tor authorises a change to the inverter's parameters, agree the
new limits with customer assistance
- If the voltage at the point of supply is much lower than that
measured on the inverter, it is necessary to adjust the line (in-
verter-contactor).
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
• Check the grid frequency in the inverter.
• Check the grid frequency also on the supply:
-
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
• Check the grid frequency in the inverter.
• Check the grid frequency also on the supply:
-
- If the voltage and the grid frequency come back within the
limits (also when the inverter is connected to the grid), contact
customer assistance
• Error inside the inverter and cannot be checked externally.
- If the alarm repeats persistently, contact customer assistance.
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8 - Maintenance