Honeywell UDC3200 manual Background Tests, EE Fail, INP1 RNG, INP2 RNG

5Troubleshooting/Service

5.1Background Tests

The UDC3200 performs ongoing background tests to verify data and memory integrity. If there is a malfunction, a diagnostic 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.

Diagnostic messages may be suppressed (stop the blinking) by pressing the RUN/HOLD key. The messages will still be available for viewing by pressing the LOWER DISPLAY key.

Table 5-1 Background Tests

Lower		Reason for Failure
Display
EE FAIL	Unable to write to non-volatile memory.
	Anytime you change a parameter and it is
	not accepted, you will see E FAIL.
FAILSAFE	This error message shows whenever the
	controller goes into a failsafe mode of
	operation. This will happen if:
	•	RAM test failed
	•	Configuration test failed
	•	Calibration test failed
	•	Burnout configured for none and
		the input failed.
INP1 RNG	Input 1 out of range. The process input is
	outside the range limits.

INP1FAIL	Two consecutive failures of input 1
	integration; i.e., cannot make analog to
	digital conversion. This will happen if:
	• Upscale or Downscale burnout is
	selected and the input is open
	• Input not configured correctly for the
	sensor being used
	• Input source is grossly out of range.
INP2 RNG	Input 2 out of range. The remote input is
	outside the range limits.
INP2FAIL	Two consecutive failures of input 2
	integration. i.e., cannot make analog to
	digital conversion.
CONF ERR	• PV low limit is > PV high limit
	• SP low limit is > SP high limit
	• Output low limit > Output high limit

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.

4.Field calibrate.

1.Make sure the actuation is configured correctly. See Section 3 - Configuration.

2.Make sure the input is correct and that it has not burned-out (opened).

3.Check for gross over-ranging with a multimeter.

4.Restore factory calibration.

Same as INP1RNG above.

Same as INP1FAIL above.

1.Check the configuration for each item and reconfigure if necessary.

04/08 UDC3200 Universal Digital Controller Operator Manual 79