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Omega FMA 4000 User Manual: Self Diagnostic Alarm; Analog Output Signals Configuration

Digital mass flow meters.
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5.3.8 Self Diagnostic Alarm

FMA 4000 series Mass Flow Meters are equipped with a self-diagnostic alarm
which is available via multicolor LED, digital interface and on screen indication (for
devices with optional LCD). The following diagnostic events are supported:
NUMBER
ALARM DESCRIPTION
Auto Zero procedure is running
1
FATAL ERROR (reset or
maintenance service is required for
2
return in to the normal operation)
CPU Temperature too high
3
(Electronics Overheating)
Sensor in the warm up stage
(first 6 minutes after power up
4
sequence, normal operation, no
critical diagnostic events present)
Flow Sensor Temperature too low
5
Flow Sensor Temperature too high
6
Totalizer Reading hit preset limit
7
Low flow Alarm conditions
8
High flow Alarm conditions
9
Normal operation, no diagnostic
10
events
Note: [0] - Priority Level is highest (most important). When two or more
diagnostic events are present at the same time, the event with the
highest priority level will be indicated on the status LED and displayed
on the LCD (if equipped). All diagnostic events may be accessed
simultaneously via digital communication interface (see paragraph 8.3
"ASCII Command Set").
5.4
Analog Output Signals configuration
FMA 4000 series Mass Flow Meters are equipped with calibrated 0-5 Vdc and 4-
20 mA output signals. The set of the jumpers (J7A, J7B, J7C) located on the right
side of the flow meter, inside of the maintenance window above the 15 pin D-con-
nector (see Figure c-1 "FMA 4000 configuration jumpers") are used to switch
between 0-5 Vdc or 4-20 mA output signals (see Table VI).
DIAGNOSTIC
LED COLOR
AND PATTERN
Not periodically
flashing RED
Constant RED
Flashing RED/UMBER
Constant UMBER
Flashing UMBER/OFF
Flashing RED/OFF
Flashing GREEN/UMBER
Flashing GREEN/OFF
Flashing GREEN/RED
Constant GREEN
17
PRIORITY
LEVEL
0
1
2
3
4
5
6
7
8
9

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