Honeywell UDC3500 - 7.7.9 Procedure #9 - RS-485

Troubleshooting/Service
312 UDC3500 Universal Digital Controller Product Manual 3/07
Lower
Display
Reason for Failure How to Correct the Problem
CFG ERR
Configuration data is in error. 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.
FAILSAFE
or
FAILSF 2
This error message shows whenever
the controller goes into a failsafe
mode of operation. This will happen if:
• Burnout for input(s) used for
PV configured for “None” and
input(s) failed.
• RAM test failed
• Configuration test failed
• Calibration test failed
1) If an input failure message is also being
displayed, then s
ee the Analog Input Trouble
Shooting Procedure in Section
7.7.8.
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.
INP1 RNG
Input 1 out of range.
Input exceeds the permissible range as defined
in Table 5-1.
See the Trouble Shooting Procedure in
Section 7.7.8.
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.
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 7.7.8.
INP2 RNG
Input 2 out of range. Same as INP1RNG above.
INP2FAIL
Two consecutive failures of input 2
integration; i.e., cannot make analog
to digital conversion.
Same as INP1FAIL above.
INP3 RNG
Input 3 out of range. Same as INP1RNG above.
INP3FAIL
Two consecutive failures of input 3
integration; i.e., cannot make analog
to digital conversion.
Same as INP1FAIL above.
INP4 RNG
Input 4 out of range. Same as INP1RNG above.
INP4FAIL
Two consecutive failures of input 4
integration; i.e., cannot make analog
to digital conversion.
Same as INP1FAIL above.
INP5 RNG
Input 5 out of range. Same as INP1RNG above.