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294 HVAC Drive H300
Issue Number: 3
EEPROM Fail Default parameters have been loaded
31
The EEPROM Fail trip indicates that default parameters have been loaded. The exact cause/reason of the trip can be
identified from the sub-trip number.
The drive holds two banks of user save parameters and two banks of power down save parameters in non-volatile memory.
If the last bank of either set of parameters that was saved is corrupted a User Save or Power Down Save trip is produced.
If one of these trips occurs the parameters values that were last saved successfully are used. It can take some time to save
parameters when requested by the user and if the power is removed from the drive during this process it is possible to
corrupt the data in the non-volatile memory.
If both banks of user save parameters or both banks of power down save parameters are corrupted or one of the other
conditions given in the table above occurs EEPROM Fail.xxx trip is produced. If this trip occurs it is not possible to use the
data that has been saved previously, and so the drive will be in lowest allowed drive mode with default parameters. The trip
can only be reset if Pr mm.000 (mm.000) is set to 10, 11, 1233 or 1244 or if Load Defaults (11.043) is set to a non-zero
value.
Recommended actions:
• Default the drive and perform a reset
• Allow sufficient time to perform a save before the supply to the drive is removed
• If the trip persists - return drive to supplier
Encoder 9 Position feedback is selected from a option module slot which does not have a feedback option module installed
197
The Encoder 9 trip indicates that position feedback source selected in Pr 03.026 is not valid
Recommended actions:
• Check the setting of Pr 03.026
• Ensure that the option slot selected in Pr 03.026 has a feedback option module installed
External Trip An External trip is initiated
6
An External Trip has occurred. The cause of the trip can be identified from the sub trip number displayed after the trip string.
See table below. An external trip can also be initiated by writing a value of 6 in Pr 10.038.
Recommended actions:
• Check the Safe Torque Off signal voltage on terminal 29 equals to 24 V
• Check the value of Pr 08.009 which indicates the digital state of terminal 29, equates to ‘on’.
• If external trip detection of the Safe Torque Off input is not required, set Pr 08.010 to Off (0).
• Check the value of Pr 10.032.
• Select ‘Destinations’ (or enter 12001) in Pr mm.000 and check for a parameter controlling Pr 10.032.
• Ensure Pr 10.032 or Pr 10.038 (= 6) is not being controlled by serial comms
HF01 Data processing error: CPU address error
The HF01 trip indicates that a CPU address error has occurred. This trip indicates that the control PCB on the drive has
failed.
Recommended actions:
• Hardware fault – Contact the supplier of the drive
Trip Diagnosis
Sub-trip Reason
1 The most significant digit of the internal parameter database version number has changed
2
The CRC's applied to the parameter data stored in internal non-volatile memory indicate that a valid set
of parameters cannot be loaded
3
The drive mode restored from internal non-volatile memory is outside the allowed range for the product
or the derivative image does not allow the previous drive mode
4 The drive derivative image has changed
5 The power stage hardware has changed
6 The internal I/O hardware has changed
7 The position feedback interface hardware has changed
8 The control board hardware has changed
9 The checksum on the non-parameter area of the EEPROM has failed
Sub-trip Reason
1 External Trip Mode (08.010) = 1 or 3 and Safe Torque Off input 1 is low
2 External Trip Mode (08.010) = 2 or 3 and Safe Torque Off input 2 is low
3 External Trip (10.032) = 1
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