Rockwell Automation 837E Solid-State Temperature Sensors - Manual (Page 25)

837E Solid-State Temperature Sensors User Manual
Troubleshooting
Pub #75054-004-08, March 2013 23
Troubleshooting
Error and warning codes
If an error occurs in the electronics, the color of the status LED changes from green to red
and the display shows an error or warning code, as outlined below:
• E-code for errors
In the event of an error message, the measured value is unreliable.
• W-code for warnings
In the event of a warning, the measured value is still reliable.
Error Codes
Code Explanation
E011 Device configuration faulty
E012 Error in measurement
E015 Device error (internal)
E019 Power supply has undervoltage/overvoltage
E020 Device error (internal)
E021 Device error (internal)
E022 USB supply voltage
E025 Switching contact 1 is not open, although it should be open
E026 Switching contact 2 is not open, although it should be open
E040 Device error (internal)
E042 Output current cannot be generated.
Possible cause: analog output not connected or open circuit
E044 Excessive output current drift (±0.5 mA)