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HVAC Drive H300 289
Issue Number: 3
Autotune 2 Position feedback direction incorrect
12
The drive has tripped during a rotating autotune. The cause of the trip can be identified from the associated sub-trip number.
Recommended actions:
• Check motor cable wiring is correct
• Check feedback device wiring is correct
• Swap any two motor phases
Autotune 3 Measured inertia has exceeded the parameter range or commutation signals changed in wrong direction
13
The drive has tripped during a rotating autotune or mechanical load measurement test. The cause of the trip can be
identified from the associated sub-trip number.
Recommended actions for sub-trip 2:
• Check motor cable wiring is correct
• Check feedback device U,V and W commutation signal wiring is correct
Recommended actions for sub-trip 3:
• Increase the test level.
• If the test was carried out at standstill repeat the test with the motor rotating within the recommended speed range.
Autotune 7 Motor number of poles / position feedback resolution set incorrectly
17
An Autotune 7 trip is initiated during a rotating autotune, if the motor poles or the position feedback resolution have been
set up incorrectly where position feedback is being used.
Recommended actions:
• Check line per revolution for feedback device
• Check the number of poles in Pr 05.011
Autotune Stopped Autotune test stopped before completion
18
The drive was prevented from completing an autotune test, because either the drive enable or the drive run were removed.
Recommended actions:
• Check the drive enable signal (Terminal 29) was active during the autotune
• Check the run command was active in Pr 08.005 during autotune
Brake R Too Hot
Braking resistor overload timed out (I
2
t)
19
The Brake R Too Hot indicates that braking resistor overload has timed out. The value in Braking Resistor Thermal
Accumulator (10.039) is calculated using Braking Resistor Rated Power (10.030), Braking Resistor Thermal Time Constant
(10.031) and Braking Resistor Resistance (10.061). The Brake R Too Hot trip is initiated when Braking Resistor Thermal
Accumulator (10.039) reaches 100 %.
Recommended actions:
• Ensure the values entered in Pr 10.030, Pr 10.031 and Pr 10.061 are correct
• If an external thermal protection device is being used and the braking resistor software overload protection is not
required, set Pr 10.030, Pr 10.031 or Pr 10.061 to 0 to disable the trip.
Card Access NV Media Card Write fail
185
The Card Access trip indicates that the drive was unable to access the NV Media Card. If the trip occurs during the data
transfer to the card then the file being written may be corrupted. If the trip occurs when the data being transferred to the
drive then the data transfer may be incomplete. If a parameter file is transferred to the drive and this trip occurs during the
transfer, the parameters are not saved to non-volatile memory, and so the original parameters can be restored by powering
the drive down and up again.
Recommended actions:
• Check NV Media Card is installed / located correctly
• Replace the NV Media Card
Trip Diagnosis
Sub-trip Reason
1
The position feedback direction is incorrect when position feedback is being used during a rotating autotune
2
A SINCOS encoder with comms is being used for position feedback and the comms position is rotating
in the opposite direction to the sine wave based position.
Sub-trip Reason
1 Measured inertia has exceeded the parameter range during a mechanical load measurement
2 The commutation signals changed in the wrong direction during a rotating autotune
3 The mechanical load test has been unable to identify the motor inertia
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