Honeywell Mini-AT User Manual

36
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Page 36
Mini-AT User Guide
Alarms
The LCD on the Mini-AT’s door will display decimal points between each numerical digit when the
instrument has recognized an alarm.
Examples:
0
.0.0.4.5.6.7.8 0 0 0 4 5 6 7 8
CORRECTED VOLUME CORRECTED VOLUME
MCF MCF
LCD with alarms LCD without alarms
Use a Mag W
and (or push-button) to display the first alarm code onto the LCD. Continue scrolling with the
Mag Wand to display additional alarms, if they exist.
After displaying the last alarm code, continued use of the
Mag Wand will cause the normal Meter Reader List to be displayed on the LCD. Table 4 is a listing of all
alarms currently available from the Mini-AT.
Clearing Alarms
By default, the Mini-AT is configured to allow manually clearing of alarms using a Mag Wand. This feature is
enabled by setting Item Code 128 (Mag Alarm Acknowledge) to “Yes”. T
o clear all instrument alarms, scroll
through the alarm codes until the LCD displays “E.E.E.E.E.E.E.E”, then simply allow the display to timeout,
which takes about 1-minute.
After the “E.E.E.E.E.E.E.E” have timed-out, the LCD will display the first item of
the Meter Reader List, usually the Display Test, “8.8.8.8.8.8.8.8”. The alarms can also be cleared using
Mini-AT Link or MasterLink 32 software.
Report By Exception
RBX (Report By Exception, Item Code 165) is another alarm function that must be enabled using Mini-A
T
Link or MasterLink32 software. When enabled, the RBX function automatically clears an instrument alarm
after
an alarm parameter has returned to its normal operating range, buffered by a user specified dead band.
RBX will also clear the dots on the LCD when an alarm is cleared.
The Date and Time of all Mini-AT Alarms, Alarms Acknowledgment and
Alarms Cleared are recorded in the
Alarm Log regardless of whether RBX is enabled or if the alarms were cleared manually. Mini-AT Link
software is used to download and generate an Alarm Report.
HELP Mode
When the Battery Voltage (Item 048) drops below the Shutdown Voltage (Item 050 usually 4.8 volts), the
instrument enters HELP mode. In this mode the LCD will display “. .H.E.L.P. .” to signify that the battery
voltage has reached a critical level.
All instrument operations are suspended in this mode with the exception of
Time. The batteries should be replaced immediately when the instrument is in HELP mode. After the replacing
the batteries, if the voltage is above 4.8 volts, a mag wand input, or serial access will wake-up the instrument.
This will allow the Mini-AT to function normally again.

Honeywell Mini-AT Specifications

General

Brand	Honeywell
Model	Mini-AT
Category	Controller
Language	English