Knowledgebase Article Number
April 20th, 2022, at approximately 8:00 p.m. EST.
At Bastian Solutions, we continually strive to provide superb customer service at the highest standard, and not only reactive but proactive support. Transparency is a key component in helping achieve this objective and with that in mind, we are providing a full root cause analysis for the disruptions in service on April 20th, 2022 described below.
The ticket that was generated for this case has been documented as ticket number: 190072
Wednesday, April 20, 2022
8:05 PM EST
9:30 PM EST
10:00 PM EST
Chewy FC10 controls internal team members decided to proceed with reverting back to the previous timer change value which was 4 seconds. After this change, the Bastian Engineer realized that the site was nearly complete with the replacement of yet another motor exchange. The engineer decided to clear all faults in the queue of the VFD, upload the parameters of the motor, unlatch the custom fault bit, and note the timer change that was made by internal Chewy team members.
10:30 PM EST
Shortly after completing the exchange of the motor and performing all the required resets, a test was made to the system to see if the fault would continue. After testing the system, the fault was not present and the site continued with its production activities.
There were a number of factors that could have caused this issue to occur. Hence applying these actions led to the fix. First, having the servo motor properly wired and installed was required. Clearing the faults in the VFD fault queue was required, along with resetting the local fault and all custom faults. Identifying the proper timer pre-set values that were modified by site personnel is also critical in the optimization of the site equipment.
It is suspected that the latch of the custom fault continued to be latched on due to the motor being out of service and not properly configured/uploaded. Once inhibiting the VFD and uploading the parameters, we were able to unlatch the fault along with editing a timer that the internal Chewy automation team included. The custom fault reset was done among 5 other procedures that took place and this could led to all 6 procedures needing to occur to successfully clear the fault.
Issue 1: Faults within the fault queue in the VFD queue
Issue 2: Faulty suspected servo motor
Issue 3: VFD motor parameters not configured within the newly replaced motor
Issue 4: Improper the timer Pre-set value
Issue 5: AOI fault
Issue 6: Latched input custom fault
Next Steps and Preventive Actions:
Issue 1: Clear all faults within the VFD queue
Issue 2: Replace the faulty suspected servo motor
Issue 3: Upload the VFD motor parameters properly by inhibiting the module
Issue 4: Change the timer Pre-set value and note the ticket that changes are made so engineers can refer to it for future reference
Issue 5: Perform a local reset of the AOI fault
Issue 6: Unlatch the input custom fault
Our commitment to you:
Bastian Solutions understands the impact of the disruption that occurred and affected operations for your organization. It is our primary objective in providing our clients with superb customer service, and we assure you we're taking the required preventative measures to prevent reoccurrence.