Installation and Start-Up | 3-21
The results presented on the analog output signal channels (displayed
on the User Interface) are held constant until new values are determined.
Since it is not possible to represent the ‘<’ (less than) symbol on the ana-
log signal channels, check the following for clues to determine whether
the HCDP temperature is ‘equal to’ or ‘less than’ the value indicated by
the analog signal:
• View the LEDs on the User Interface to determine if any alarms have
been triggered. If LED 4 (Hydrocarbon-Dewpoint-Temperature-Not-
Found) is On, the HCDP temperature was not detected and, there-
fore, is ‘less than’ the actual reading.
• View the RUN menu for the current HCDP temperature.
• View the SCode and XSCode (Stat\History menu) for HCDP-related
alarms.
• If necessary, view the HCDPA sub-menu item (ApplicCFG menu) to
view the current HCDP temperature Off-Spec Alarm setpoint.
The analog input/output (and alarm relay) terminations are made on the
Termination board inside the Electronics Enclosure. Signal wires, con-
tained within conduit (complete with connector and seal) that is approved
locally for the hazardous location, enter the Electronics Enclosure through
the Signal Cable Entry on the top of the enclosure. The terminal assign-
ments are identified in Figures 3-3, 3-4, and 3-5.
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