Expert Blog | How to Clear AX5000 Special Alarm F350 via PLC Program

Posted by on

Expert Blog | How to Clear AX5000 Special Alarm F350 via PLC Program

Some alarms in the AX5000, such as F350 and F351, cannot be cleared directly using the reset button on the drive. The help documentation states that the drive can only return to normal operation after performing a series of actions via TCDriveManager. However, when these faults occur in the field, customer service or maintenance personnel may not be familiar with this procedure. In practice, they often prefer a code-based approach to clear such faults directly from the PLC program.


Attachments for download 👇

🔗 CNC.tnzip
🔗 Prg_AX5000_F350.xml

This article takes the F350/F351 faults that may occur with the modulo function of the AX5000 in a CNC project as an example, and explains a method to clear these alarms via PLC logic.

This alarm may occur under the following conditions:



After the alarm occurs 

Reset via TCDriveManager


When this alarm is triggered, the drive enters the Pre-OP state, and the reset button cannot clear the fault normally.



Step 1: Modify the drive state machine



Set P-0-0277 to Yes and download the parameter.



Then switch the drive state machine back to OP (Operational).


How to clear this alarm via PLC


Additional libraries required

  • Tc2_Drive

  • Tc2_EtherCAT

Main function blocks used

  • FB_EcSetSlaveState

  • FB_SoEWrite_ByDriveRef

  • FB_SoEWritePassword_ByDriveRef

PLC implementation

Refer to the example PLC code Prg_AX5000_F350.xml for the detailed sequence.

How to open the example:


Simply right-click the PLC project folder and select Import PLCopenXML, then choose the corresponding file.