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Troubleshooting
4-3
Fault Queue
The drive automatically retains a history of faults that have occurred in
the fault queue. The fault queue is accessed using the OIM or PC
software.
The fault queue holds the most recent faults. Frames B, C, D, & E hold
four faults and Frames 2, 3, 4, 5, & 6 hold eight 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 time of the fault. The value of this timer
is copied to 242 [PowerUp Marker] when the drive powers up. The fault
queue time stamp can then be compared to the value in [PowerUp
Marker] to determine when the fault occurred relative to the last drive
power up.
The time stamp is cleared when the fault queue is cleared.
Refer to
for information on accessing the fault queue using the
LCD OIM.
Summary of Contents for 9VT201-007HTNNN
Page 1: ...VTAC 9 AC Drive Firmware Version 3 xx User Manual ...
Page 4: ...soc 2 ...
Page 14: ...P 8 Overview Publication 9VT UM001D EN P Notes ...
Page 56: ...1 42 Installation Wiring Publication 9VT UM001D EN P Notes ...
Page 62: ...2 6 Start Up Publication 9VT UM001D EN P Notes ...
Page 130: ...3 68 Programming and Parameters Publication 9VT UM001D EN P Notes ...
Page 150: ...4 20 Troubleshooting Publication 9VT UM001D EN P Notes ...
Page 176: ...A 26 Supplemental Drive Information Publication 9VT UM001D EN P Notes ...
Page 196: ...B 20 Using the LCD OIM Publication 9VT UM001D EN P Notes ...
Page 212: ...C 16 Application Notes Publication 9VT UM001D EN P Notes ...
Page 223: ......