Rockwell Automation Liqui-Flo DBT Reach Drive - Manual (Page 187)

Troubleshooting 4-7
4.2 About Faults
Faults indicate conditions within the drive that require immediate attention. The drive
responds to a fault by initiating a coast-to-stop sequence and turning off output power
to the motor.
In addition, some faults are auto-resettable, non-resettable, and/or user-configurable
as described in table 4.4.
The drive indicates faults in the following ways:
• Drive status parameters Drive Status 1 (209) and Drive Status 2 (210).
• Entries in the fault queue (see section 4.2.1).
• Pop-up screen on the LCD HIM. The screen displays:
• Fault number
• Fault name
• Time that has elapsed since fault occurred.
4.2.1 About the Fault Queue
The drive automatically retains a history of faults that have occurred in the fault queue.
The fault queue is accessed using the HIM or DriveExplorer Pro software.
The fault queue holds the 16 most recent faults. The last fault to occur is indicated in
queue entry #1. As new faults are logged into the queue, existing fault entries are
shifted (for example, entry #1 will move to entry #2). Once the queue is full, older faults
are discarded from the queue as new faults occur.
All entries in the fault queue are retained if power is lost.
The Time Stamp
For each entry in the fault queue, the system also displays a fault code and time stamp
value. The time stamp value is the value of an internal drive-under-power timer at the
Table 4.4 – Fault Types
Ty
p
e
Fault Description
➀
Auto-Reset/Run If the drive is running when this type of fault occurs, and
Auto Rstrt Tries (174) is set to a value greater than 0, a
user-configurable timer, Auto Rstrt Delay (175) begins.
When the timer reaches zero, the drive attempts to
automatically reset the fault. If the condition that caused
the fault is no longer present, the fault will be reset and the
drive will be restarted.
➁
Non-Resettable This type of fault normally requires drive or motor repair.
The cause of the fault must be corrected before the fault
can be cleared. The fault will be reset on power up after
repair.
➂
User-Configurable These faults can be enabled/disabled to either annunciate
or ignore a fault condition using Fault Config 1 (238).