Alarm Description Possible solutions
A05 Under voltage • Supply voltage below the minimum
allowed value.
• Insufficient input power to power the
device.
Reset mode:
• Automatic reset if parameter Autores-
tart = 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 The power supply voltage or the volt-
age inside the device exceeds the max-
imum allowed value.
Reset mode:
• Automatic reset if parameter Autores-
tart = 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 The value read by the analog input is
higher than the value set for the param-
eter 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.
A08 Locked rotor The automatic frequency limitation cre-
ated by the inverter following an exces-
sive absorption by the motor (beyond
the value set in the parameter Rated
motor current) causes a reduction of
the frequency below the average value
between Min motor frequency and Max
motor frequency.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Check the possible solutions for the alarm A01 Overcurrent motor
A09 Overload inverter The current absorbed by the load ex-
ceeds the rated current of the device.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Check that the rated current of the motor is lower than the rated
current of the device.
• Make sure that the motor is free to rotate and check for any me-
chanical issues.
• Increase the value of the parameter Ramp up time.
• Increase the value of the parameter Ramp freq. min motor.
• Adjust parameter Voltage boost
• Check the value of the power supply voltage both under no load and
load conditions.
CAUTION
The device can supply power to the load for 10
minutes at a current consumption of 101 % of the
rated current of the device, and for 1 minute at a
current consumption of 110 % of the rated current of
the device.
A10 IGBT trip alarm The current absorbed by the load in-
stantaneously exceeds the maximum
current protection of the device's power
module.
Reset mode:
• Automatic reset after 10 seconds for
up to 3 attempts, after which you
must wait for 60 minutes.
• Disconnecting the power supply
• Check the possible solutions for alarms A01 Overcurrent motor and
A09 Overload inverter.
• Check for short circuits between the output phases and the ground
insulation.
• Check that the system is properly grounded.
• Check for electrical noise from other devices connected to the sys-
tem.
A11 No load The current absorbed by the load is too
low in relation to the parameter Rated
motor current.
Reset mode:
• Alarm reset by STOP key.
• Disconnecting the power supply
• Check the possible solutions for the alarm A01 Overcurrent motor
MIDA
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