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306 HVAC Drive H300
Issue Number: 3
Rating Mismatch Power stage recognition: Multi module voltage or current rating mismatch
223
The Rating Mismatch trip indicates that there is a voltage rating or current rating mismatch in a multi-module drive system.
This trip is only applicable to modular drives that are connected in parallel. A mixture of power modules with different
voltage or current ratings within the same multi-module drive system is not allowed and will cause a Rating Mismatch trip.
Recommended action:
• Ensure that all modules in a multi-modular drive system are of the same frame size and rating (voltage and current)
• Hardware fault – Contact the supplier of the drive
Rectifier Set-up A rectifier has not been set-up correctly in a multi-power module system.
94
A rectifier has not been set-up correctly in a multi-power module system.
Recommended action:
• Check the inter-power module wiring
Reserved Reserved trips
01
95
102
104 - 108
161-168
170-173
222
228-246
These trip numbers are reserved trip numbers for future use. These trips should not be used by the user application
programs.
Resistance Measured resistance has exceeded the parameter range
33
This trip indicates that either the value being used for motor stator resistance is too high or that an attempt to do a test
involving measuring motor stator resistance has failed. The maximum for the stator resistance parameters is generally
higher than the maximum value that can be used in the control algorithms. If the value exceeds (VFS / v2) / Full Scale
Current Kc (11.061), where VFS is the full scale DC bus voltage then this trip is initiated. If the value is the result of a
measurement made by the drive then sub-trip 1 is applied, or if it is because the parameter has been changed by the user
then sub-trip 3 is applied. During the stator resistance section of auto-tuning an additional test is performed to measured
the drive inverter characteristics to provide the compensation necessary for dead-times. If the inverter characteristic
measurement fails then sub-trip 2 is applied.
Recommended actions:
• Check that the value that has been entered in the stator resistance does not exceed the allowed range (for the
presently selected motor map)
• Check the motor cable / connections
• Check the integrity of the motor stator winding using an insulation tester
• Check the motor phase to phase resistance at the drive terminals
• Check the motor phase to phase resistance at the motor terminals
• Ensure the stator resistance of the motor falls within the range of the drive model
• Select fixed boost mode (Pr 05.014 = Fixed) and verify the output current waveforms with an oscilloscope
• Replace the motor
Slot App Menu Application menu Customization conflict error
216
The Slot App Menu trip indicates that more than one option slot has requested to customize the application menus 18, 19
and 20. The sub-trip number indicates which option slot has been allowed to customize the menus.
Recommended actions:
• Ensure that only one of the Application modules is configured to customize the application menus 18, 19 and 20
Trip Diagnosis
Sub-trip Reason
1 Measured stator resistance exceeded the allowed range
2 It was not possible to measure the inverter characteristic
3
The stator resistance associated with the presently selected motor map
exceeds the allowed range
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