Specifications

SQ: 1-45
RS3: Service Quick Reference Guide
Troubleshooting
RTD and Thermocouple I/O Troubleshooting (continued)
Condition Action
TC/RTD FIC shows poor
accuracy.
If the sensor of an 1984--2731--000x TC/RTD FIC is
disconnected and reconnected, the reading will be
inaccurate for approximately ten minutes. The reading will
be within 1% in one minute and will gradually gain
accuracy. This is a characteristic of the circuit.
Discrete output module
does not work. FIC
communications are OK.
1. Put the COB into MANUAL S tatus and command
the output to ON. Verify that the output LED for the
FIC is on. The proper load must be connected.
2. If the LED is on:
Check the module fuse
Check the field voltage
Replace the module
If the LED is not on:
Replace the module
Replace the FIC
NOTE: Output Modules ODC5A5 and OAC5A5
are Normally Closed Modules.
3. If all of the points on this FIC and the FIC next to it
are not working, the FIC may not be seated
properly in its connectors. It is possible one of the
two connector tabs are not seated correctly in the
FlexTerm motherboard connectors.
WARNING
Before proceeding, remove all field voltage
from the FlexTerm Termination card to prevent
shock or equipment damage.
Loosen the two captive screws holding the FIC in
place. Gently move the card away from the
FlexTerm mounting plate and verify that both card
connector tabs are plugged into the motherboard
connectors properly.