Allen-Bradley ControlLogix Reference Manual page 460

Chapter 4 CIP Axis Attributes
460
Array Rule Exception
Index
39 D Bus Power Leakage
40 BD Bus Power Sharing
41 E Feedback Signal Noise FL
42 E Feedback Signal Noise UL
43 E Feedback Signal Loss FL
44 E Feedback Signal Loss UL
45 E Feedback Data Loss FL
46 E Feedback Data Loss UL
47 E Feedback Device Failure
48 - Reserved
Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018
Description
DC Bus power leak has been detected when configured for
Standalone operation. This can occur when the drive,
configured for Standalone operation, is incorrectly wired to
share DC bus power.
An external converter sharing DC Bus power with this drive
in a Shared AC/DC or Shared DC configuration has requested
that this drive stop consuming power from the shared DC
Bus. This may require that the drive be disabled to remove
its DC Bus Power load from the failed converter. When
there is no communication link between this drive and the
external converter, the controller can monitor the DC Bus
Unload bit of the converter axes and, if set, it can initiate
Bus Power Sharing exceptions on all drives associated with
the failed converter. See the DC Bus Unload status bit
definition associated with the Axis Status attribute for a
detailed description of this behavior.
Noise induced A/B channel state changes (illegal states)
from a feedback device were detected by the drive.
Specifically, the number of these noise events that have
occurred on this channel has exceeded the Feedback Noise
Factory Limit. The offending feedback channel number is
encoded in the associated fault/alarm sub code.
Noise induced A/B channel state changes (illegal states)
from a feedback device were detected on a feedback
channel. Specifically, the number of these noise events that
have occurred on this channel has exceeded the Feedback
Noise User Limit. The offending feedback channel is
encoded in the associated fault/alarm sub code.
One or more A/B channel signals from a feedback device are
open, shorted, missing, or severely attenuated. Specifically,
the detected voltage levels of the signals are below the
Feedback Loss Factory Limit. The offending feedback
channel is encoded in the associated fault/alarm sub code.
One or more A/B channel signals from a feedback device are
open, shorted, missing, or severely attenuated. Specifically,
the detected voltage levels of the signals are below the
Feedback Loss User Limit. The offending feedback channel
is encoded in the associated fault/alarm sub code.
The number of consecutive missed or corrupted serial data
packets over the serial data channel from a feedback device
has exceeded the Feedback Data Loss Factory Limit. The
offending feedback channel is encoded in the associated
fault/alarm sub code.
The number of consecutive missed or corrupted serial data
packets over the serial data channel from a feedback device
has exceeded the Feedback Data Loss User Limit. The
offending feedback channel is encoded in the associated
fault/alarm sub code.
The feedback device has detected an internal error. The
offending feedback channel is encoded in the associated
Fault/Alarm Sub Code.
-