Azbil DCP31 - 9 - 2 Self-diagnostics and Alarm Code Display

Self-diagnosticsfunctionsareincorporatedintothecontroller.Thetableonthefollowingpage
showsthealarmcodesthataredisplayedasaresultofself-diagnostics:

Self-diagnostics at power ON

PROM error
AnerrorinthesystemprogramstoredtoPROMhasbeendetected.
However,notethatnotallPROMerrorsaredetected.Someerrors
aredetectedascontrolleroperationerrors.
Thecorrespondingalarmcodeisdisplayedwhenthiserroris
detected.

Adjustment value error
AnerrorintheanalogI/Oadjustmentdatastoredtovolatilememo-
ryhasbeendetected.
Thecorrespondingalarmcodeisdisplayedwhenthiserroris
detected.

RAM backup error
AnerrorintheRAMbackupfunctionhasbeendetected.
Whenthiserrorisdetected,ageneralresetiscarriedout.
Analarmcodeisnotdisplayedforthiserror.

Board configuration error
Anerrorintheboardconfiguration(combinationofdifferentPCBs)
hasbeendetectedaccordingtothecatalogNo.ofthecontroller.
Thecorrespondingalarmcodeisdisplayedwhenthiserroris
detected.

Self-diagnostics at each sampling cycle

Analog input error
Aprobablecauseofthiserrorisadisconnectedanaloginput.This
errorisdetectedwhentheanaloginputisoutsidethe-10.0to110.0%
range.
Thecorrespondingalarmcodeisdisplayedwhenthiserroris
detected.

MFB (motor feedback) input error
DisconnectedMFBinputorashort-circuithasbeendetectedon2G
outputmodels.
Thecorrespondingalarmcodeisdisplayedwhenthiserroris
detected.
9-2
Chapter 9. MAINTENANCE & TROUBLESHOOTING
9 - 2 Self-diagnostics and Alarm Code Display