Nastec SUND, Инструкция по установке, использованию и техническому обслуживанию

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Alarm Notification LED Description Possible solutions
A01
Overcur-
rent mo-
tor 2 flashes of the
yellow alarm led The current absorbed by the motor
exceeds the maximum allowed value.
Reset mode:
• Automatic reset after 10 seconds
for up to 7 attempts, after which
you must wait for 60 minutes.
• Disconnecting the power supply.
• Check that motor parameters are correctly set.
• Check that the pump is turning in the correct direction.
• Make sure that the motor is free to rotate and check for any
mechanical issues.
• Adjust parameter Voltage boost
A02 Sen-
sor fault 3 flashes of the
yellow alarm led The current value read by the analog
input is less than 4 mA.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Check that the connections on the device side and on the
sensor side are correct.
• Check that the sensor is fed the correct power.
• Check that the sensor is working properly.
• If only one sensor is connected to analog input 1, try to
connect it to analog input 2.
A03 Over
tempera-
ture in-
verter 4 flashes of the
yellow alarm led The temperature reached by the de-
vice is higher than the maximum al-
lowed value.
Reset mode:
• Automatic reset
• Check that the ambient temperature is within the allowed
limits.
• Make sure the device is protected from direct exposure to
sunlight or heat sources.
• Check that both the external and internal cooling fans (if
present) are working properly.
• Check that the dissipation channels are clean.
• Check that the device is cooled as indicated in the dedicated
chapter.
NOTE
To ensure uninterrupted operation, the inver-
ter automatically reduces the maximum fre-
quency (i.e. power) when the internal tem-
perature reaches a certain threshold. If such
frequency reduction is not sufficient to keep
the temperature above the maximum permit-
ted value, the inverter will stop the motor
and trigger the alarm A03 Over temperature
inverter.
A04 Dry
run co-
sphi 1 flash of the yel-
low alarm led The warning W26 No water appeared
5 consecutive times following the au-
tomatic reset attempts.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
WARNING
When the warning W26 No water appears,
the device will automatically restart the load
after a time equal to the value set in the
parameter Restarts delay multiplied by the
number of attempts made. At the end of the
fifth attempt, the device will definitively stop
the load producing the alarm A04 Dry run
cosphi. The alarm must be reset manually.
A05 Un-
der volt-
age Flashing red
STAND-BY led • Supply voltage below the minimum
allowed value.
• Insufficient input power to power
the device.
Reset mode:
• Automatic reset if parameter Autor-
estart = ON
• Check the value of the power supply voltage both under no
load and load conditions.
• Verify that the source has enough power to power the load.
A06 Over
voltage Red STAND-BY
LED and yellow
ALARM LED
flashing. The power supply voltage or the volt-
age inside the device exceeds the
maximum allowed value.
Reset mode:
• Automatic reset if parameter Autor-
estart = ON
• Check the value of the power supply voltage both under no
load and load conditions.
• Check for regeneration from the load.
• Increase parameter Ramp down
• Increase parameter Ramp freq. min motor
• In the case of a permanent magnet motor, check that the
load is not subjected to passive movement.
A07 Max
value
alarm 7 flashes of the
yellow alarm led The value read by the analog input
is higher than the value set for the
parameter Max alarm value.
Reset mode:
• Automatic reset
• Check the value set for the parameter.
• Check the hydraulic causes that lead to the alarm condition.
• Check that the sensor is working properly.
SUND
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