Honeywell UDC3500 Product Manual page 306

Troubleshooting/Service
Lower
Display
Configuration data is in error.
CFG ERR
FAILSAFE This error message shows whenever
the controller goes into a failsafe
or
mode of operation. This will happen if:
FAILSF 2
INP1 RNG Input 1 out of range.
INP1FAIL
Two consecutive failures of input 1
integration or input value is outside of
Out-of-Range limits; i.e., instrument
cannot perform analog to digital
conversion.
INP2 RNG Input 2 out of range.
INP2FAIL Two consecutive failures of input 2
integration; i.e., cannot make analog
to digital conversion.
INP3 RNG Input 3 out of range.
Two consecutive failures of input 3
INP3FAIL
integration; i.e., cannot make analog
to digital conversion.
INP4 RNG Input 4 out of range.
Two consecutive failures of input 4
INP4FAIL
integration; i.e., cannot make analog
to digital conversion.
Input 5 out of range.
INP5 RNG
292
Reason for Failure
• Burnout for input(s) used for
PV configured for "None" and
input(s) failed.
• RAM test failed
• Configuration test failed
• Calibration test failed
UDC3500 Universal Digital Controller Product Manual
How to Correct the Problem
1) Step through the STATUS group – the
controller will recalculate the checksum.
2) Run through the STATUS check a second
time to see if the error cleared.
3) Power cycle the instrument.
a) If the message reappears, replace the
instrument.
b) If the error does not reappear, check the
configuration of your instrument to
ensure that it is configured properly. See
Section 3.
1) If an input failure message is also being
displayed, then s
ee the Analog Input Trouble
Shooting Procedure in Section
2) Run through STATUS check to determine
the reason for the failure.
3) Run through the STATUS check a second
time to see if the error cleared.
Input exceeds the permissible range as defined
in Table 5-1.
See the Trouble Shooting Procedure in
7.6.8.
Section
Analog to Digital conversion failures will happen
if:
• Input sensor is open (Burnout)
• Input not configured correctly for the
sensor being used
• Input source is grossly out of range
• Input sensor incorrectly connected to input
terminals
See the Trouble Shooting Procedure in Section
Same as INP1RNG above.
Same as INP1FAIL above.
Same as INP1RNG above.
Same as INP1FAIL above.
Same as INP1RNG above.
Same as INP1FAIL above.
Same as INP1RNG above.
7.6.8.
7.6.8.
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