195-226
Description IOPoint [ ] - Thermocouple value beyond range of configured TC type ([ ] deg)
Possible Cause
• Thermocouple mV input exceeded range of linearization (lookup) table for this TC type. Refer to documentation for
specified thermocouple ranges.
• Thermocouple configured as wrong type
• Stray voltage or noise caused the input to exceed its range.
Solution
• Check the field wiring, including shields.
• Check the thermocouple for an open circuit.
• Verify that the thermocouple type matches the configuration.
• Measure the incoming mV signal and verify that it is within the specified thermocouple range.
2400-2431
Description IOPoint [ ] - RTD voltage out of range ([ ] mV)
Possible Cause
• There is a break in the RTD wiring/cabling or high impedance is blocking the signal.
• The sensor impedance is too high.
• The RTD device has failed.
Solution
• Check the field wiring for an open circuit or high impedance.
• Verify that the connections to the terminal board are correct.
• Check the RTD for proper operation and sensor type.
• Replace the I/O pack.
2432-2463
Description IOPoint [ ] - RTD current out of range ([ ] mA)
Possible Cause
• There is a break in the RTD wiring/cabling open or high impedance is blocking the signal.
• There is a break in the connections to the terminal board.
• The current source on the I/O pack has failed.
• The measurement device has failed.
Solution
• Check the field wiring for an open circuit or high impedance.
• Verify that the connections to the terminal board are correct.
• Replace the I/O pack.
220 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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