A/D Fault; Press Out Range - Honeywell Mini-AT User Manual

Item
No. Item Name
————————————————————————————————————————
103 INDEX SW#2 FAULT
104

A/D FAULT

105

PRESS OUT RANGE

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102
Mini-AT User Guide
Description
This item (103) indicates if an alarm for index switch #2 was
generated. If index switch #2 fails to provide an input meter
pulse within four meter revolutions, an alarm is initiated and is
indicated by placing dots on the LCD and "11111111" at item
102. "00000000" at item 102 indicates there is no Switch #2
Alarm. The alarm indicators will remain active until manually
cleared (by software).
Default = 00000000
This item (104) indicates if an alarm for A/D Converter was
generated. If the microprocessor detects an A/D fault (Analog to
Digital), an alarm is initiated and is indicated by placing dots
on the LCD and "11111111" at item 104. "00000000" at item
104 indicates there is no A/D Converter Alarm. The alarm
indicators will remain active until manually cleared (by
software). Unlike other instrument alarms, an A/D Fault is
usually a hardware failure which requires component
replacement on the main circuit board, which is not a field
repair unless the main board is replaced
Default = 00000000
If item 105 is programmed into item 072, 073 or 074, this item
(105) indicates if a high or low pressure alarm was generated.
During a wake-cycle, if the measurement for item 008 (GAS
PRESSURE) is a value less than the value at item 011 (PRES LO
LIM) or a value greater than the value at item 010 (PRES HI LIM),
an alarm is initiated and is indicated by placing dots on the
LCD and "11111111" at item 105. "00000000" at item 105
indicates there is no Pressure Alarm. The alarm indicators will
remain active until manually cleared (by software) or
automatically when RBX (item 165) is enabled. Also see
items 143 and 145.
Default = 00000000