74 UDC3300 Limit Controller Product Manual 1/01
7.4 Status Tests
Introduction
When required, the results of these tests can be checked to determine the
reason the controller has gone to “Failsafe”.
How to check the
status tests
The procedure in Table 7-4 tells you how to display the results of the
status tests. Table 7-5 lists the tests, the reason for the failure, and how to
correct the problem.
Table 7-4 Procedure for Displaying the Status Tests Results
Step Operation Press Action
1
Select
STATUS
Set Up Group
SET UP
Until you see:
STATUS
Lower Display
READ
Upper Display
2
Read the status
tests results
FUNCTION
Until you see:
Lower Display
Upper Display
FAILSAFE
NO or YES
YES indicates
a failure
Successive presses of the [FUNCTION] key
will display the results of the status tests in
the following order:
RAM TEST
CONF TEST
CAL TEST
FACT CRC
Identify the problem and correct the failure
as shown in Table 7-5.
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