Azbil Corporation Maintenance and Troubleshooting
Model MGG10C/14C - MagneW FLEX+/PLUS+ Converter 5-13
Error messages
Error messages are grouped by the severity of the problem. There are messages for
non-critical problems and for critical problems.
Error codes for critical problems
Critical problems can disrupt owmeter operation and ultimately damage the
owmeter if not corrected. When critical trouble occurs during operation, an error
message appears on the converter’s display panel and the owmeter continues to
output 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 to
do. If the problem persists after trying these solutions, contact technical support. (For
technical support, contact an Azbil Corp. sales representative in your area.)
Table 5-3 Critical Errors
Error Screen Error Solution
EX check
Error
(Excitation
circuit is open.)
• Check connection of
terminal/wiring of X and Y.
• Check if the resistance of
coil is less than 50 W. (Coil
resistance is to be checked
between X and Y terminal
of a detector.)
• Cycle power.
ROM check error • Cycle power.
• Replace the ROM.
• Replace main card.
RAM read after
write error
• Cycle power.
• Replace main card.
NVM read after
write error
• Cycle power.
• Replace main card.
ADC error
A/D change error
• Cycle power.
• Replace main card.
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