Hardware Diagnostics - Fisher FIELDVUE DLC3010 Instruction Manual

Maintenance & Troubleshooting
October 2014
Figure 6‐1. LCD Meter Diagnostic Display
ANALOG DISPLAY
OF OUTPUT
E0380
D FAIL HDWR— This message indicates the existence of one or more of the following conditions:
—The primary sensor input conversion is out of range.
—The primary sensor drive current is out of range.
—The internal reference voltage for controlling the loop current is out of range.
Perform the diagnostic procedures detailed later in this section to isolate the specific failure. If diagnostics indicate a
failure of a particular module, replace the indicated module with a new one. Otherwise, correct the mechanical input
condition to clear the message.
D OFLOW— The location of the decimal point, as configured in the meter setup, is not compatible with the value to be
displayed by the meter. For example, if the meter is measuring a level greater that 99.999 mm, and the meter
decimal point is set to 3 digit precision, the meter will display an "OFLOW" message because it is only capable of
displaying a maximum value of 99.999 when set to 3 digit precision. The position of the decimal point may be
adjusted by using the Field Communicator. From the Online menu, select:
Configure > Manual Setup > Instrument Display > Decimal Places (2-2-5-4).
Selecting "0" will put the display in auto‐scale mode. (The number of decimal places displayed will be the maximum
remaining in the display field for the current value of PV.)

Hardware Diagnostics

If you suspect a malfunction despite the absence of diagnostic messages on the Field Communicator display, follow
the procedures described in table 6‐1 to verify that the digital level controller hardware and process connections are in
good working order. Under each of the major symptoms, specific suggestions are offered for solving problems. Always
deal with the most likely and easiest‐to‐check conditions first.
72
PROCESS
VARIABLE VALUE
DIAGNOSTIC
MESSAGE
MODE
Instruction Manual
D102748X012