
152 UDC 6300 Process Controller Product Manual 1/03
5.4 Monitoring Your Controller, Continued
Diagnostic error
messages
The UDC6300 performs background tests to verify data and memory
integrity. If there is a malfunction, an error message will be displayed.
In the case of more than one simultaneous malfunctions, only the one with
the highest priority will appear on the lower display.
A list of error messages is contained in Table 5-5.
If any of these error messages occur, refer to Section 8 - Troubleshooting
for information to correct the failure.
Table 5-5 Error Messages
Prompt Description
EE FAIL Unable to write to non-volatile memory
IN1 FAIL Two consecutive failures of input 1 integration
IN2 FAIL Two consecutive failures of input 2 integration
IN3 FAIL Two consecutive failures of input 3 integration
IN4 FAIL Two consecutive failures of input 4 integration
IN5 FAIL Two consecutive failures of input 5 integration
FAILSAFE Input failure or internal diagnostics error
CONF ERR • Low limit greater than high limit for PV, SP, Reset, or
Output
• Conflict between the remote mode switches and the
input algorithm selection
• Too many high level inputs are configured for the
conversion rate being used
IN1 RANGE Input 1 out-of-range
IN2 RANGE Input 2 out-of-range
IN3 RANGE Input 3 out-of-range
IN4 RANGE Input 4 out-of-range
IN5 RANGE Input 5 out-of-range
Pulse input less than zero value or greater than span
value
PV RANGE PV ±10% out-of-range
PV = INPX x INPX Ratio + INPX Bias
If a Loop algorithm has been selected, this error
message will appear when the result of the algorithm
exceeds the PV limits.
RV RANGE Remote Variable out-of-range
Note: RV = InputX x RatioX x BiasX
DO FAILED The read value of Digital Output 1 to 4 does not compare
with the correct value.
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