Teledyne 700 IR Series Instruction Manual page 38

700 IR Series
INFRARED GAS DETECTOR FOR COMBUSTIBLE AND CO
GASES
USER MANUAL
NOTE: If the 4-20mA output is not being used, the Green wire from the ITM
to the Black wire at the (-) J1 terminal (see Figure 10: Detector Wire Connections.
Input Voltage Fault
If the detector is currently receiving an input voltage that is outside of the 11.5-28 VDC range,
an "Input Voltage Fault" is declared. An "Input Voltage Fault" will cause the "Fault Detected"
message to scroll once a minute on the display. The fault register bit for Input Voltage Fault will
be set and will not clear until the fault condition has been cleared. If an Input Voltage Fault occurs,
the 4-20mA signal will be set at 0mA until the fault condition is resolved.
Temperature Fault
If the detector is currently reporting an ambient temperature that is outside of the –40C° to +75C°
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 Reminder 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 ITM
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 6, for guidance on fault conditions If you cannot fix
the fault condition, email our Technical Service team at oldhamsimtronics-support@teledyne.com
or call +33 (0)3 21 60 80 86.
32
2
must
be connected
NP700IRIMEN
Revision E.0