Background Tests; Table 4-14 Background Tests - Honeywell UDC 2300 User Manual

4.16 Background Tests

Introduction
The UDC2300 performs ongoing background tests to verify data and memory
integrity. If there is a malfunction, an error message will be displayed (blinking)
in the lower display.
In the case of simultaneous malfunctions, the messages will appear in sequence
in the lower display. Table 4-14 lists these background tests, the reason for their
failure, and how to correct the problem.
Lower
Display
Unable to write to non-volatile
E FAIL
memory. Anytime you change a
parameter and it is not accepted, you
will see E FAIL.
This error message shows whenever
FAILSF
the controller goes into a failsafe mode
of operation. This will happen if:
Input 1 out of range. The process input
IN1RNG
is outside the range limits.
Two consecutive failures of input 1
IN1_FL
integration. i.e., cannot make analog to
digital conversion. This will happen if:
Input 2 out of range. The remote input
IN2RNG
is outside the range limits.
Two consecutive failures of input 2
IN2_FL
integration. i.e., cannot make analog to
digital conversion.
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Table 4-14 Background Tests

Reason for Failure
• RAM test failed
• Configuration test failed
• Calibration test failed
• Burnout configured for none
and the input failed.
• Upscale or Downscale burnout
is selected
• Input not configured correctly
UDC2300 Universal Digital Controller User Manual
How to Correct the Problem
1. Check the accuracy of the parameter and re-
enter.
2. Try to change something in configuration.
3. Run through Read STATUS tests to re-write
to EEPROM.
1. Run through STATUS check to determine the
reason for the failure.
2. Press the SET UP key until STATUS appears
in the lower display.
3. Press the FUNCTION key to see whether the
tests pass or fail, then run through the
STATUS codes a second time to see if the
error cleared.
1. Make sure the range and actuation are
configured properly.
2. Check the input source.
3. Restore the factory calibration. (See Section
4.17.)
4. Field calibrate.
1. Make sure the actuation is configured
correctly. See Section 4 - Configuration.
2. Make sure the input is correct.
3. Check for gross over-ranging. Check S101
jumper position. See Figure 2-1 Jumper
Placements
4. Restore factory calibration. See Section 4.17
Same as IN1RNG above.
Same as IN1FL above.
Operation
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