Honeywell UDC 3300 Background Tests, Introduction Background tests, EE Fail, SW Fail CAL MTR

9.5 Background Tests

Introduction

Background tests

The UDC 3300 performs on-going 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 more than one simultaneous malfunction, only the one with the highest priority will appear in the lower display. Table 9-6 lists these background tests, the reason for their failure, and how to correct the problem.

Lower

Display

Table 9-6 Background Tests

Reason for Failure How to Correct the Problem

EE FAIL

FAILSAFE or

FAILSF2 (Loop 2)

INP1FAIL

INP2FAIL

INP3FAIL

Unable to write to non-volatile memory. Anytime you change a parameter and it is not accepted, you will see EE FAIL.

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.

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

•Input not configured correctly

Two consecutive failures of input 2 integration. i.e., cannot make analog to digital conversion.

Two consecutive failures of input 3 integration, i.e., cannot make analog to digital conversion.

1.Check the accuracy of the parameter and re-enter.

2.Try to change something in configuration.

3.Run through 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 what tests
	pass or fail, then run through the STATUS codes a
	second time to see if the error cleared.

Correct according to the recommendations given in Table 9-5.

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

2.Make sure the input is correct.

3.Check for gross over-ranging.

4.Replace factory calibration. See Section 7.6.

5.Replace the cold junction assembly.

Same as INP1FAIL above.

Same as INP1FAIL above.

SW FAIL

CAL MTR

Position Proportional input slidewire failure

Position Proportional or 3 Position Step Control with Motor Position Indication, Auto Cal never performed.

1.Check motor slidewire connections.

2.Recalibrate the slidewire motor position. see the calibration section (Section 8.3).

1.Calibrate the controller for Position Proportional output. Refer to Subsection 8.3 – Position Proportional and 3 Position Step Output Calibration.

CONF ERR

• PV low limit is > PV high limit	1. Check the configuration for each item and
• SP low limit is > SP high limit	reconfigure if necessary.
• Output low limit > Output high limit

250 UDC 3300 Controller Product Manual 4/00