E--883--4N--E
1
11. BEHAVIOR IN ERRATIC CONDITIONS
(1) Erratic A/D Converter:
If, following energization of A/D converter circuit, the conversion process is not completed within
the specified time period, it is found that the circuit has a problem. At this point, temperature and
pressure fallback values are used for calculation.
(2) Temperature and Pressure Input Out of Range:
If the input exceeds the high limit or falls below the low limit, its default fallback value is used for
calculation.
(3) Analog Output Overflow:
A full scale output is produced across the analog output terminals.
10. ERROR MESSAGES
Table 10.1 List of Error Messages
No.
Error Message
Description
1
ADJUST DATA ERROR
After adjusted, error of allowable range check
12
A/D CONVERT ERROR
A/D converter circuit error
13
DENSITY CONVERT ERROR
Density converter circuit error
14
TEMP 1 (PT) OVER
Temperature Pt input 1 overflow
15
TENP 1 (PT) UNDER
Temperature Pt input 1 underflow
16
TEMP 2 (PT) OVER
Temperature Pt input 2 overflow
17
TEMP 2 (PT) UNDER
Temperature Pt input 2 underflow
18
TEMP 1 (ANA) OVER
Analog temperature input 1 overflow
19
TEMP 1 (ANA) UNDER
Analog temperature input 1 underflow
20
TEMP 2 (ANA) OVER
Analog temperature input 2 overflow
21
TEMP 2 (ANA) UNDER
Analog temperature input 2 underflow
26
DENSITY OVER
Density input overflow (unused)
27
DENSITY UNDER
Density input underflow (unused)
28
4mA SCALER 1 UNDER
Analog output 1 underflow
29
20mA SCALER 1 OVER
Analog output 1 overflow
30
4mA SCALER 2 UNDER
Analog output 2 underflow
31
20mA SCALER 2 OVER
Analog output 2 overflow
NOTE: Depending on the model in service, some of the messages are not shown.
