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Soft Fail Message
UM51 Diagnostic
Overrun
Additional status and fault messages
Redundancy-related notifications
Messages generated by the controller related to redundancy status and redundancy faults
are listed in the Redundancy section in Table 14.
OPM-related notifications – RDNOPMSTATUS parmaeter
Status and Fault messages generated by the controller during the firmware migration
process of the controller are listed in Table 15.
Online diagnostics
Hardware diagnostics are executed deterministically during normal operations of the
C300 Controller. Some diagnostics execute frequently, but all diagnostics are designed to
complete within eight hours (the Diagnostic Test Interval). Once the controller's Power-
On Self Test and startup routines are successfully completed, these diagnostics execute to
detect any of an array of faults that might cause degradation in controller operation.
When a fault is detected by the controller, it identifies and reports the fault to the system
and acts to maintain control and view through a switchover, if required (in the case of
synchronized redundant controller pairs). Various actions are taken by the controller
depending upon the severity or type of fault (Fault classification). Eventhough some of
these detected faults do not cause a failure or an action (such as a switichover) by the
controller, the faults are reported to alert operators of the potential for a failure in the
future, if not corrected.
Fault classifications
Faults have been classified into a number of categories according to the severity of the
failure. The controller behavior when a failure is detected is determined by type of fault
and whether the controller is non-redundant, or is one of a redundant controller pair.
Table 18 identifies these fault classifications and describes controller behavior in
response to the fault type.
This section also includes more detailed descriptions of these fault classifications, how
these faults are indicated both on the controller faceplate and through other system
displays and corrective actions to clear the faults.
R301.1
11/06
Condition when indicator is lit
The time allotted for the internal
diagnostic to complete has been
exceeded.
Experion C300 Controller User's Guide
Honeywell
Additional status and fault messages
Redundancy-related notifications
Corrective Action
Call Honeywell TAC.
235
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Table of Contents
Troubleshooting
