Honeywell Series 8 I/O - F2 Cal_Fl; Writenbl; Mltinpfl; Redndiag

13. Series 8 I/O Alarms and Failures
13.2. Reviewing IOM soft failures
R500 Series 8 I/O User's Guide 279
April 2017 Honeywell
57 F2CAL_FL
TC/RTD FTA 2 calibration failure.
Diagnostic check:
TC/RTD FTA 2 calibration failure.
Cause:
TC/RTD FTA 2 calibration failure.
Solution:
Recalibrate the FTA.
58 WRITENBL
Analog Output/Digital Output write enable protection failure.
Diagnostic check:
Cause:
Analog Output/Digital Output write enable protection failure
Solution:
60 MLTINPFL
Multiple input failure detected.
Diagnostic check:
Cause:
Multiple input failure detected
Solution:
61 REDNDIAG
Redundancy hardware diagnostic failure.
Diagnostic check:
Redundancy hardware diagnostic failure.
Cause:
Redundancy hardware diagnostic failure.
Solution:
Replace the IOMs one at a time following database
synchronization.