User guide

Publication 900-UM007D-EN-E - January 2011
Troubleshooting & Error Indication 6-3
Figure 6.1
AD Converter Error
Meaning
There is an error in internal circuits.
Action
First, turn the controller power OFF then back ON again. If the display
remains the same, the Controller must be repaired. If the display is restored,
then the probable cause is electrical noise affecting the control system. Check
for electrical noise.
Operation
• The control outputs and alarm outputs turn OFF.
Control range
s.err display Numeric display s.err display
Input indication range
−1999 9999
Control range
s.err display [[[[ display Numeric display
Input indication range
]]]] display s.err display
Display range
− 1999
9999
Control range
s.err display Numeric display s.err display
Display range
Resistance Thermometer Input
(Except for models with a setting range of −199.9 to 500.0 °C)
Thermocouple Input
(Except for models with a setting range of −199.9 to 400.0 °C)
Control range
s.err display [[[[ display Numeric display
Input indication range
s.err display
Resistance Thermometer Input
(Except for models with a setting range of −199.9 to 500.0 °C)
Thermocouple Input
(Except for models with a setting range of −199.9 to 400.0 °C)
Analog Input
When Display Range > Control Range
Analog Input
When Display Range < Control Range
1
1
1
The display range is shown in numbers with decimal points omitted.
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