10-3
Chapter 10. MAINTENANCE AND TROUBLESHOOTING
Behavior in case of PV input failure
(1)
AL0
1
,
02
, or
03
occurs.
Control output: It is possible to make the settings so that the control action is
continued or stopped.
Other actions: Actions are continued.
(2) Alarm occurs other than those shown above.
All actions are continued.
The following table shows the indications and alarms of this unit by the sensor type
if PV input failure occurs:
Thermocouple
Failure status Range No. Indication value Alarm code
Sensor burnout Upscale (110 %FS)
AL0
1
CJ failure PV having incorrect cold
junction compensation.
AL03
Over-range, burnout 19 (PLII) 1365 ˚C (105 %FS)
AL0
1
RTD
Failure status Range No. Indication value Alarm code
RTD burnout Upscale (110 %FS)
AL0
1
A-wire burnout Upscale (110 %FS)
AL0
1
B-wire burnout Upscale (110 %FS)
AL0
1
,
AL03
C-wire burnout Upscale (110 %FS)
AL0
1
,
AL03
2 or 3-wire burnout Upscale (110 %FS)
AL0
1
,
AL03
A and B-wire short-circuit Downscale (-10 %FS)
AL02
A and C-wire short-circuit Downscale (-10 %FS)
AL02
A and B-wire/A and C-wire
short-circuit
41,43 (Pt100) -235 ˚C (-5 %FS)
AL02
A and B-wire/A and C-wire
short-circuit
42,44 (JPt100) -235 ˚C (-5 %FS)
AL02
DC voltage/DC current
Failure status Range No. Indication value Alarm code
Burnout 81 (0 to 10 mV) Upscale (110 %FS)
AL0
1
82 (-10 to +10 mV) Upscale (110 %FS)
AL0
1
83 (0 to 100 mV) Upscale (110 %FS)
AL0
1
84 (0 to 1 V) Downscale (-3 %FS)
AL02
86 (1 to 5 V) Downscale (-10 %FS)
AL02
87 (0 to 5 V) Downscale (-3 %FS)
AL02
88 (0 to 10 V) Downscale (0 %FS) None
89 (0 to 20 mA) Indefiniteness (around
0 %FS)
None
90 (4 to 20 mA) Downscale (-10 %FS)
AL02
To Next Page
Loading...
Need help?
General
