OLCT 700/710 TP
Page 26 of 45
Rev. C.1
OLCT 700/710 TP Instruction Manual
Temperature Fault
If the OLCT 700/710 is currently reporting an ambient temperature that is outside of the –40°C to +75°C
range, a “Temperature Fault” is declared. A “Temperature Fault” will cause the “Fault Detected” message
to scroll once a minute on the display. The Modbus™ fault register bit for Temperature Fault will be set
and will not clear until the fault condition has been cleared. If a Temperature Fault occurs, the 4-20mA
signal remains operational.
AutoSpan Fault
If 180 days has elapsed since the last successful AutoSpan, an AutoSpan Fault will be generated. An
“AutoSpan Fault” will cause the “Fault Detected” message to scroll once a minute on the display. The
Modbus™ fault register bit for AutoSpan Reminder Fault will be set and will not clear until the fault
condition has been cleared. If an AutoSpan Reminder Fault occurs, the 4-20mA signal remains operational.
Refer to the Troubleshooting Guide, Section 0, for guidance on fault conditions If you cannot fix the fault
condition, email our Technical Service team at
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