Azbil Corporation Maintenance and TroubleshootingModel MGG10C/14C - MagneW FLEX+/PLUS+ Converter 5-13Error messagesError messages are grouped by the severity of the problem. There are messages fornon-critical problems and for critical problems.Error codes for critical problemsCritical problems can disrupt flowmeter operation and ultimately damage theflowmeter if not corrected. When critical trouble occurs during operation, an errormessage appears on the converter’s display panel and the flowmeter continues tooutput the preset value in the fail-safe direction. The error message and the self-diagnostic results are visible on the display panel.The following table shows the possible error codes for critical problems and what todo. If the problem persists after trying these solutions, contact technical support. (Fortechnical support, contact an Azbil Corp. sales representative in your area.)Table 5-3 Critical ErrorsError Screen Error SolutionEX checkError(Excitationcircuit is open.)• Check connection ofterminal/wiring of X and Y.• Check if the resistance ofcoil is less than 50 W. (Coilresistance is to be checkedbetween X and Y terminalof a detector.)• Cycle power.ROM check error • Cycle power.• Replace the ROM.• Replace main card.RAM read afterwrite error• Cycle power.• Replace main card.NVM read afterwrite error• Cycle power.• Replace main card.ADC errorA/D change error• Cycle power.• Replace main card.
