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Diagnostics and Troubleshooting
Fault Descriptions
Flash Invalid
This fault indicates that the firmware checksum has failed. From the Tools menu, Flash Upgrade to reprogram/upgrade the
firmware stored in flash memory. If this problem persists, call Control Techniques. A common cause would be an interrupted
F/W Flash upgrade (cable disconnected in the middle of an upgrade process).
Drive Overtemp
Indicates the drive IGBT temperature has reached 100ºC (212ºF).
Power Up Test
This fault indicates that the power-up self-test has failed. This fault cannot be reset with the reset command or reset button.
NVM Invalid
At power-up the drive tests the integrity of the non-volatile memory. This fault is generated if the contents of the non-volatile
memory are invalid.
Invalid Configuration
Epsilon Only
If this occurs call Technical Support at Control Techniques.
The FM was not on this drive during its previous power-up and it is not known if the setup data in the FM matches the drive
and motor to which the FM is now attached.
Encoder Hardware
Cycle Power or Cycle
Logic Power
Yes
Motor Overtemp
Allow Motor to cool down,
Reset Button or Input Line
Yes
RMS Shunt Power Reset Button or Input Line Yes
Overspeed Reset Button or Input Line Yes
Following Error
(Position mode) (Pulse mode)
Reset Button or Input Line Yes
Travel Limit +/- Auto No
All “On”
Normally "On" for one
second during power up
Yes
Display Fault Action to Reset Bridge Disabled